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User manual UM EN Solarcheck family

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1. 35 Structure of the status register sse 36 Notesion Ins latiOm coo cedet incedo ie to ite det iste 43 Distances between data and power cables 45 RS 485 cabling recommendations 47 SCK bus cabling 47 Analog connection power supply cabling recommendations 47 Voltage connection cabling recommendations 47 PE connection cabling recommendations 48 Recommended conductor cross sections for cable lengths UPTO 500i m T 48 Setting the baud rate sse enne 51 Setting th rene tee 51 Setting stop bits eret 51 Current consumptioniz 62 Assignment time register 67 105608 en 00 PHOENIXCONTACT 115 Solarcheck family Section 10 Appendix A Table 10 1 Table 10 2 Table 10 3 Table 10 4 Table 10 5 Table 10 6 Table 10 7 Table 10 8 Table 10 9 Table 10 10 Table 10 11 Table 10 12 Table 10 13 Table 10 14 Table A 1 Table A 2 Table A 3 Table A 4 Table A 5 Table A 6 Table A 7 Table A 8 Table A 9 Tabl
2. RS 485 Bus Figure 8 1 Schematic view of the locate function 68 PHOENIX CONTACT 105608 en 00 Additional functions 8 3 System calibration The measuring inputs of all measuring modules are tested and calibrated to high quality standards in the factory However due to the physical characteristics of Hall sensor mea surement under certain circumstances it is possible to generate an offset in the current measured value caused by magnetization Very abrupt current edges which are rather un usual in photovoltaics or geological conditions can cause such effects Where present this measured value offset is usually consistent This means that the mea sured values are always increased by the same basic value This type of offset can be de tected permanently when the PV generator is switched off but a constant low current value is still displayed above the specified deviation of measurement For example at night when it is guaranteed that there is no current flowing and the displayed measured value shows e g 0 4 A In this type of situation the entire measuring system can simply be calibrated To do this the current value of all measuring channels is recorded in a defined zero current situation e g the middle of the night and temporarily stored This value is the offset which would increase the actual current values for the operating time during the day Take this temporarily stored
3. 73 9 4 Example 4 74 10 Troubleshooling Mr A 75 10 1 Diagnostics and error 76 10 2 Additional 5 ertet 82 6 PHOENIX CONTACT 105608 en 00 Table of contents DEP Coup de ER 85 A1 Register tables e rt di end ah Lala Laga 85 A2 ACCOSSOMOS inn o ege alii 110 A Appendix lor document lists noi Ro aironi 111 A1 donnus ed 111 A2 List of tables iii linee ees 115 PHOENIX CONTACT 7 105608 en 00 Solarcheck family 8 PHOENIX CONTACT 105608 en 00 Introduction 1 Introduction 1 1 Product overview Solarcheck is a modular monitoring system for photovoltaic systems It consists of a com munication module SCK C MODBUS Order No 2901674 and various measuring mod ules for current and voltage measurement The communication module collects the data from all connected measuring modules and forwards it to a higher level controller via Modbus RTU using an RS 485 connection At the same time the connected measuring modules are supplied with power via the com munication cable SCK BUS between the measuring modules and the communication module Data cables Solar cables Measuring module for Compact controller n 2 current 4 strings Measuring module for
4. 55 Figure 6 8 Connection diagram for SCK M I 4S 20A 55 Figure 6 9 Digital input connection 56 Figure 6 10 Mounting 5 ae ie Loo e ne reas 57 Figure 6 11 High voltage measurement connection 57 Figure 6 12 PE connection no tee haie 58 Figure 6 13 Connection to the SCK M I 8S 20A module 59 Figure 6 14 Connection outside of the Solarcheck device range 60 Figure 6 15 Performance characteristics of the SCK C MODBUS communication module without connected measuring devices 61 Figure 6 16 Performance characteristics of the communication module SCK C MODBUS with connected measuring modules SCK M I including voltage measuring modules SCK M U 1500V 62 Figure 6 17 Performance characteristics of the voltage measuring module SCREEN SOO Y areali 63 Section 7 Figure 7 1 LED indicators Arte t eee ri a tege 65 Section 8 Figure 8 1 Schematic view of the locate function 68 Figure 8 2 Svstem calibrationi 69 Section 9 Figure 9 1 SCK C MODBUS in the inverter station current measuring module without voltage measurement in the string combiner box 71 Figure 9 2 SCK C MOD
5. TEH 2 1 2 2 2 4 2 8 2 216 2 32 2 64 2 128 BEEN Value Address 1 4 8 64 x 77 6 Placethe PCB onto the guide rails and carefully reinsert it in the housing as far as it will go Snap the housing cover into place 50 PHOENIX CONTACT 105608 en 00 Installation Changing the default settings The default baud rate setting is 9600 bps The baud rate can be changed to the following values using DIP switches S1 S4 Table 6 9 Setting the baud rate Baud rate bps S1 52 53 54 9600 0 0 0 0 14400 1 0 0 0 19200 0 1 0 0 38400 1 1 0 0 Please note that fast baud rates are generally more susceptible to interference The default parity and stop bit settings can be changed using DIP switches S5 and S6 and DIP switch S7 Table 6 10 Setting the parity Parity S5 S6 Even 1 0 Odd None 0 x Table 6 11 Setting the stop bits Stop bits S7 1 0 2 105608_en_00 PHOENIX CONTACT 51 Solarcheck family 6 5 2 Connecting the SCK C MODBUS communication module Snap the device onto a 35 mm DIN rail according to DIN EN 50022 in the control cabinet Install the power supply RS 485 communication and the Solarcheck measuring devices as per the connection description in Section 6 1 on page 39 and the following connection dia gram SCK M I
6. 49 6 5 2 Connecting the SCK C MODBUS communication module 52 6 6 Installing SCK M I xx current measuring 54 6 7 Installing the SCK M U 1500V voltage measuring module 57 6 7 1 PE connection td enge Aa o Pe 58 6 7 2 Connecting the measuring module to the SCK M I 8S 20A Solarcheck current measuring module 59 6 7 3 Connecting the measuring module outside of the Solarcheck device range 60 6 7 4 Connecting voltage measurement 60 6 8 Power supply for the Solarcheck devices 61 6 8 1 Design of the power supply 61 6 8 2 Design of a separate power supply for the SCK M U 1500V voltage measuring module 63 rcp LEL DS UR 65 8 Adgionalfunclonsa rese REL 67 8 1 Energy saving mode ig E E seuls 67 8 2 LocatefunctiOn ioo edet 68 8 3 Systemicalibratio inta e a pae t der RE 69 9 Installation examples Dd dr 71 9 1 Example RE ed e E Eres 71 9 2 Example 2 72 9 3 Exainple
7. Figure 6 3 Installation of the data cables When installing the cables note the following Do not install the data cables in direct proximity parallel to the power cables see Figure 6 1 on page 44 instead install them in separate grounded metal cable ducts with a cover for example Always install the data cables as close as possible to grounded metal parts such as housing panels Data cables may only cross power cables at a right angle see Figure 6 3 on page 46 Avoid unnecessary cable lengths antenna effect For connection to ground use suitable shield connection clamps such as the SK 35 D shield connection clamp Order No 3026890 For shield connection to GND2 of the communication module use suitable shield con nection clamps such as the ME SAS shield connection clamp Order No 2853899 Remove the shielding only a few cm before the connection terminal block on the device Untwist the twisted pairs only a few cm before the connection terminal block on the de vice 46 PHOENIX CONTACT 105608 en 00 Installation Please note the following recommendations for cabling Table 6 3 RS 485 cabling recommendations RS 485 Cable 0 25 mm twisted pair double shielding Shielding Connect both ends of the outer shield to ground Connect the inner shield on the controller to ground and on the communi cation module to GND2 only Surge protection For cables lengths gt 10 m install appropriat
8. String String 1A 20A25A 100 Figure 3 3 Valid value range for current measurement Measuring accuracy Current measurement has an accuracy of 1 This value is based on the measuring range final value 20 A and is valid for the entire measuring range from 1 to 20 Further more a temperature coefficient TC5p is applied to the measurement This is 20 0296 Kelvin The deviation occurs above and below the production related compensation temperature of 20 C Example Ambient temperature 30 C Deviation of measurement 1 20 0276 X T Ambient Compensation Deviation at Tao c 1 2 of measuring range final value 1 2 of 20 A 240 mA 105608 en 00 PHOENIX CONTACT 19 Solarcheck family D 3 2 2 Digital input NOTE Risk of material damage due to incorrect wiring The digital signal input may not be wired to an active signal Wire floating contacts of e g door contacts or remote indication contacts of surge protec tion elements directly to digital input D IN The state of the switch contact is set as a bit in the communication module and can be read by a controller PHOENIX CONTACT SCK M I 8S 20A Order No 2903241 3L i 7 0 1 4 ScKkBUs D iN DODO Figure 3 4 Digital input The refresh time for this status monitoring depends on the SCK internal communication loop For additional infor
9. Table 6 7 PE connection cabling recommendations PE connection Cable Copper 2 5 mm 14 AWG color code for PE 6 4 2 Material requirements Only use suitable connecting cables Copper cable suitable for ambient temperatures up to 75 C _ Installation method must be appropriate for the ambient conditions Required tightening torque of 0 5 Nm 0 6 Nm 6 4 3 Cable lengths and conductor cross sections Table 6 8 Recommended conductor cross sections for cable lengths up to 500 m Type Cross section RS 485 0 25 mm SCK bus 0 75 mm Analog connection max 0 5 m 0 75 mm The connection terminal blocks of the Solarcheck devices can accommodate cable cross sections from 0 14 mm to 2 5 mm For the minimum connectable cross section of 0 14 mm even cable lengths up to 300 m can be implemented between the measuring and communication module However such small cross sections are generally susceptible to interference and a relatively high voltage drop in borderline cases e g voltage on the sup ply side already at the minimum limit can mean that the devices in the field are not ade quately supplied It is therefore strongly recommended that the above conductor cross sections are used In this case distances of 500 m including the recommended surge protective devices see Accessories on page 110 can be covered There is no reliable information about operation at distances 500 m
10. current 8 strings Data cable Measuring module for ZE ZI ES LL current 8 strings Communication module for up to 8 measuring modules 3 2 5 5 m Measurement and control technology Measuring module for voltage Figure 1 1 Solarcheck topology 1 2 Area of application The Solarcheck device range is designed for use in medium to large PV systems and PV power stations Currents up to 20 A reverse currents and voltages up to 1500 V can be ac quired Even atthe lowest level of utilization one communication device with maximum as signment of measuring device connections it is possible to monitor 64 strings of a PV sys tem With an average string power of approximately 4 kW it is therefore possible to monitor a segment of approximately 250 kW with just this basic design Typically the communication devices in a PV system are positioned centrally in a control room The measuring modules are located in string combiner boxes in the field The internal communication protocol enables the connected measuring modules to be supplied with power via the communication cable As a result an additional power supply is not required for the measuring devices in the field 105608 en 00 PHOENIX CONTACT 9 Solarcheck family 1 3 General safety notes Installation operation and maintenance may only be carried out by qualified electri cians Follow th
11. 25 12 MI26 2 MI27 12 MI28 2 29 12 MI30 2 MIS1 12 2 2 12 MI34 2 5 12 MI36 2 7 12 MI38 105608 en 00 PHOENIX CONTACT 95 Solarcheck family Table A 7 Modbus address HEX 0128 0129 012A 012B 012C 012D 012E 012F Range 3 SCK channel 2 Modbus address 0100h 0160h Access Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK channel 2 PD39 SCK channel 2 PD40 SCK channel 2 PD41 SCK channel 2 PD42 SCK channel 2 PD43 SCK channel 2 PD44 SCK channel 2 PD45 SCK channel 2 PD46 Modbus address HEX 0158 0159 015A 015B 015C 015D 015E 015F 0160 Access Read only Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK channel 2 MI39 SCK channel 2 MI40 SCK channel 2 MI41 SCK channel 2 MI42 SCK channel 2 43 SCK channel 2 MI44 SCK channel 2 MI45 SCK channel 2 MI46 SCK channel 2 MI47 96 PHOENIX CONTACT 105608_en_00 Registe r tables A 1 5 Table A 8 Modbus address HEX 0180 0181 0182 0183 0184 0185 0186 0187 0188 0189 018A 018B 018C 018D 018E 018F 0190 0191 0192 0193 0194 0195 0196 0197 0198 0199 019A 019B 019C 019D 019E 019F 01A0 01A1 01A2 01A3 01A4 01A5 01A6 01A7 Address area range 4 Range 4 SCK channel Modbus address 0180h 01EOh Acces Read on Read on Read o
12. Solarcheck string monitoring User manual OGD OO GD GD OGD OO QD 70500094 INSPIRING INNOVATIONS User manual Solarcheck string monitoring 2013 06 14 Designation UM EN Solarcheck String Monitoring Revision 00 This user manual is valid for Designation SCK C MODBUS SCK M I 8S 20A SCK M I 4S 20A SCK M U 1500V Order No 2901674 2903241 2903242 2903591 PHOENIX CONTACT 105608_en_00 Internet Subsidiaries Published by Please observe the following notes User group of this manual The use of products described in this manual is oriented exclusively to Qualified electricians or persons instructed by them who are familiar with applicable standards and other regulations regarding electrical engineering and in particular the relevant safety concepts Qualified application programmers and software engineers who are familiar with the safety concepts of automation technology and applicable standards Explanation of symbols used and signal words hazards Obey all safety measures that follow this symbol to avoid possible in This is the safety alert symbol It is used to alert you to potential personal injury jury or death There are three different categories of personal injury that are indicated with a signal word DANGER This indicates a hazardous situation which if not avoided will re sult in death or serious injury WARNING This indicates a hazardous situation which
13. 0160h 95 Range 4 SCK channel Modbus address 0180h 01E0Oh 97 Range 5 SCK channel 4 Modbus address 0200h 0260h 99 Range 6 SCK channel 5 Modbus address 0280h 02E0h 101 Range 7 SCK channel 6 Modbus address 0300h 0360h 103 Range 8 SCK channel 7 Modbus address 0380h 03E0h 105 Range 9 SCK channel 8 Modbus address 0400h 0460h 106 Range 10 SCK C MODBUS Modbus address 0480h 04EOh 108 List of accessories ee eei reete er peer 110 116 PHOENIX CONTACT 105608_en_00
14. 105608 en 00 Troubleshooting Table 10 8 Scenario 7 SCK M l Device Status register LED indicator error description SCK M I 2903241 2903242 No entry POWER LED Module switches off automatically or remains in ON OFF an on off loop Cause If the supply voltage at the measuring module input falls below approximately 16 V the module current consumption increases rapidly Internal safety mechanisms then switch off the module The module restarts automatically after 10 s If the cause of the low voltage and the high current is not removed the module switches off again The module gets stuck in an on off loop Measures 1 Provide the necessary power supply to the module Voltage drops can be caused by underdimensioned power supply equipment incorrectly dimensioned cabling or ex ternal factors influencing the cabling Table 10 9 Scenario 8 SCK M I 8S 20A Device Status register LED indicator error description SCK M I 8S 20A 2903241 No entry POWER LED The current values of the string are all displayed as ON reverse current 1 5 A Cause The current measuring module has been installed incorrectly Current measurement is dependent on the current direction Measures 1 Install the module the other way Route the string cables from the other side through the holes in the device see Section 6 6 on page 54 The current direction is indicat ed on th
15. Channels for current measurement feed through direction 18 Assignment of the current measuring channels 18 Valid value range for current measurement 19 Digital Input ss eu aui ydyut c eer o s petes es 20 Block diagram Rx 20 25 Value representation for voltage measurement 28 Step response time 29 Block diagram of the SCK C MODBUS Solarcheck communication module 31 Structure of the Solarcheck communication network 32 Schematic diagram of Solarcheck communication 32 105608 en 00 PHOENIX CONTACT 111 Solarcheck family Section 6 Figure 6 1 Distances between data and power cables 44 Figure 6 2 Influence of shielding on the signal quality 45 Figure 6 3 Installation of the data cables 46 Figure 6 4 Connection diagram for SCK C MODBUS 52 Figure 6 5 Modbus connectioni e pectet ioco tee a 58 Figure 6 6 Assignment of the current measuring channels 54 Figure 6 7 Connection diagram for SCK M I 8S 20A
16. PD47 Process data SCK channel 3 384 432 device at T3 01B1 01EO MIO MI47 Module information data SCK 433 480 channel 3 device at T3 0200 0230 Status register PDO PD47 Process data SCK channel 4 512 560 device at T4 0231 0260 MIO MI47 Module information data SCK 561 608 channel 4 device at T4 0280 0280 Status register PDO PD47 Process data SCK channel 5 640 688 device at T5 02B1 02bE0 MIO MI47 Module information data SCK 689 736 channel 5 device at T5 0300 0330 Status register PDO PD47 Process data SCK channel 6 768 816 device at T6 0331 0360 MIO MI47 Module information data SCK 817 864 channel 6 device at T6 0380 03BO Status register PDO PD47 Process data SCK channel 7 896 944 device at T7 03B1 03E0 MIO MI47 Module information data SCK 945 992 channel 7 device at T7 0400 0430 Status register PDO PD47 Process data SCK channel 8 1024 1072 device at T8 105608 en 00 PHOENIX CONTACT 35 Solarcheck family Table 5 2 Structure of the register areas Modbus address Contents Designation HEX DEC 0431 0460 MIO MI47 Module information data SCK 1073 1120 channel 8 device at T8 0480 04B0 Status register PDO PD47 Process data SCK C MODBUS 1152 1200 device 04B1 04E0 MIO MI47 Module information data SCK 1201 1248 C MODBUS device The status register is always stored in the first register
17. if not avoided could result in death or serious injury CAUTION This indicates a hazardous situation which if not avoided could result in minor or moderate injury alert the reader to a situation which may cause damage or malfunction to the D This symbol together with the signal word NOTE and the accompanying text device hardware software or surrounding property This symbol and the accompanying text provide the reader with additional in i formation or refer to detailed sources of information How to contact us Up to date information on Phoenix Contact products and our Terms and Conditions can be found on the Internet at phoenixcontact com Make sure you always use the latest documentation It can be downloaded at hoenixcontact net pr t If there are any problems that cannot be solved using the documentation please contact your Phoenix Contact subsidiary Subsidiary contact information is available at phoenixcontact com PHOENIX CONTACT GmbH amp Co KG FlachsmarktstraBe 8 32825 Blomberg GERMANY Should you have any suggestions or recommendations for improvement of the contents and layout of our manuals please send your comments to tecdoc phoenixcontact com PHOENIX CONTACT Please observe the following notes General terms and conditions of use for technical documentation Phoenix Contact reserves the right to alter correct and or improve the technical documen tation and the products describ
18. see relevant references e g in IEC 60364 7 712 or equiv alent standards Observe the correct current flow direction for DC current measurement in the measuring module As a guide the required current flow direction is indicated with an arrow 54 PHOENIX CONTACT 105608 en 00 Installation Next install SCK communication the digital input and the analog interface as per the con nection description in 6 1 on page 39 and the following connection diagram SCK C MODBUS COM GND2 A 4 9 B POWER 9 24V 9 GND1 Figure 6 7 SCK C MODBUS Figure 6 8 T 921 o SCK BUS SCK M I 8S 20A GND2 Un D_IN SCK M U 1500V 2 10V OUT GND2 10V VOLTAGE INPUT MAX 1500V DC PE Connection diagram for SCK M I 8S 20A SCK M I 4S 20A T 9 4 o SCK BUS D IN Connection diagram for SCK M I 4S 20A Also follow the cabling recommendations in Cabling on page 44 105608 en 00 PHOENIX CONTACT 55 Solarcheck family 1 NOTE Risk of damage to equipment Only wire floating switch contacts directly to the digital input The digital signal input must not be wired to an active signal LL L amp 8 x BR Wzzz PK VAL MS 85 SCKBUS D IN Figure 6 9 Digital input connection 56 PHOENIX CONTACT 105608 en 00 In
19. 485 networks FL COMSERVER 2313452 Interface converter for RS 485 Ethernet UNI 232 422 485 STEP 2868596 Power supply for module connection outside of the PS 1AC 24DC 0 5 Solarcheck device range 110 PHOENIX CONTACT 105608 en 00 A Appendix for document lists Section 1 Section 2 Section 3 Section 4 Section 5 A 1 Figure 1 1 Figure 2 1 Figure 2 2 Figure 2 3 Figure 2 4 Figure 2 5 Figure 2 6 Figure 2 7 Figure 2 8 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 4 1 Figure 4 2 Figure 4 3 Figure 5 1 Figure 5 2 Figure 5 3 List of figures Solarcheck t0pology idee didus docct 9 PV generator with central inverter 11 Generator with string inverters essen 11 Voltage ratio with and without transformer 12 Example diagram of generator with transformer inverter 12 Example diagram of generator with transformer inverter and grounding on the positive side 13 Example diagram of generator with transformer inverter and grounding on the negative side 13 Example diagram of generator with transformerless inverter 14 Data collection in large PV systems 15
20. 7 33 V 7 87V 8 40 V 8 93 V 9 47 V 10 00 V Valid voltage ranges part 2 800 6 27 V 6 80V 7 33V 7 87V 8 40V 8 93 V 947 10 00 V 900 6 80 V 7 33 7 87V 8 40 V 8 93 V 9 47V 10 00 V 1000 7 33 V 7 87 V 8 40 V 8 93 V 9 47 V 10 00 V 1100 7 87 V 8 40 V 8 93 V 9 47 V 10 00 V 400 4 13 V 4 67 V 5 20 V 5 73 6 27 V 6 80 V 7 33 V 7 87 V 8 40 V 8 93 V 9 47 V 10 00 V 1200 8 40 V 8 93 V 9 47 V 10 00 V 500 600 700 4 67 V 5 20 V 5 73 5 20V 5 73 6 27 5 73 6 27 V 6 80 6 27 6 80 7 33 6 80 7 33 7 87 7 33 7 87 8 40 V 7 87 V 8 40 V 8 93 8 40 V 8 93 V 9 47V 8 93 V 9 47 10 00 V 9 47 10 00 V 10 00 V 1300 1400 1500 8 93 V 9 47 V 10 00 V 9 47 V 10 00 V 10 00 V The inner range represents the respective analog value that is issued by the device under the respective voltage conditions 26 PHOENIX CONTACT 105608_en_00 Solarcheck string voltage measurement with the SCK M U 1500V Calculation basis for Table 4 1 and Table 4 2 If 0 lt U lt 1500 and 0 U 1500 V and 0 Difference U U lt 1500 V Then Analog Out Difference U U x8 2V 1500 V The maximum measured value deviation of 196 of the measuring range final value is based on the 100 1500 V DC system voltage range The deviation may be greater below 100 V DC 4 1 2 Note on the parallel con
21. A 100 250 2500 A 100 50 100 C 2000 12000 mV 88 PHOENIX CONTACT 105608 en 00 Register tables Table A 3 SCK M I 8S 20A register contents Index Designation Data type Value range Unit MIO Module ID USIGN16 4 MH Serial number USIGN64 0 MI2 0 0 MI4 0 MI5 Module name 32 32x CHAR SC MIE characters MI7 M MI8 9 85 5 MI10 2 MI11 OA MI12 MI13 MI14 MI15 MI16 MI17 MI18 MI19 MI20 Table 4 SCK M I 4S 20A register contents Index Designation Data type Value range Unit Channel status Bit mask PDO Digital input USIGN16 0 1 PD1 Current channel 1 INT16 250 2500 A 100 PD2 Current channel 2 250 2500 A 100 PD3 Current channel 3 250 2500 A 100 PD4 Current channel 4 250 2500 A 100 PD5 Temperature 50 100 C PD6 PD47 Unused MIO Module ID USIGN16 5 MH Serial number USIGN64 0 MI2 0 MI3 0 Ml4 0 105608_ _00 PHOENIX CONTACT 89 Solarcheck family Table A 4 Index 5 MI6 MI7 MI8 MI9 MI10 MH1 MI12 MI13 MI14 MI15 MI16 MI17 MI18 MI19 MI20 SCK M 1 4S 20A register contents Designation Module name 32 charac ters Data type 32x CHAR Value range SC XL E m e Unit 90 PHOENIX CONTACT 105608 en 00 Register tables A 1 2 Address area range 1 Tabl
22. PD18 0443 Read only SCK channel 8 MI18 0414 Read only SCK channel 8 PD19 0444 Read only SCK channel 8 MI19 0415 Read only SCK channel 8 PD20 0445 Read only SCK channel 8 MI20 0416 Read only SCK channel 8 PD21 0446 Read only SCK channel 8 MI21 0417 Read only SCK channel 8 PD22 0447 Read only SCK channel 8 MI22 0418 Read only SCK channel 8 PD23 0448 Read only SCK channel 8 MI23 106 PHOENIX CONTACT 105608 en 00 Register tables Table A 13 Modbus address HEX 0419 041A 041B 041C 041D 041E 041F 0420 0421 0422 0423 0424 0425 0426 0427 0428 0429 042A 042B 042C 042D 042E 042F Range 9 SCK channel 8 Modbus address 0400h 0460h Acces Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on 5 ly y ly y ly y ly y ly y ly ly ly ly ly ly ly ly ly ly ly ly ly Designat SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel ion 18 PD24 8 PD25 18 PD26 8 PD27 18 PD28 8 PD29 18 PD30 8 PD31 18 PD32 8 PD33 18 PD34 18 PD35 18 PD36 8 PD37 18 PD38 8 PD39 18 PD40 8PD41 18 PD42 8 PD43 18 P
23. P_OUT GND1 9 ii 0 10V POWER GND2 1 Un 9 4 DIN SCK BUS Figure 6 4 Connection diagram for SCK C MODBUS First connect all of the desired measuring modules to the corresponding T inputs of the device To do this wire the data inputs T1 T8 to the respective data outputs of the measur ing modules SCK BUS Two cables are required for each data link to the measuring modules The cables may be swapped Next connect the RS 485 connections To do this wire data output A to the positive input of the RS 485 master and data output B to the negative input of the RS 485 master The internal shield of this cable can be connected to the terminal block GND2 so that the potential of the RS 485 network line is also routed Instead of the internal shield a third wire can also be used for example to route the potential in the RS 485 network Also make sure that the external shield of the data cable is always connected to ground at both ends so as to prevent inductive couplings in the system from the power cables 52 PHOENIX CONTACT 105608 en 00 Installation 3 Wire the Modbus devices present in the RS 485 network with a maximum length of 1200 m Follow the cabling recommendations in Cabling on page 44 and terminate the start and end of the network following the established procedure for RS 485 net works 1 31 MODBUS slaves SCK C MODBUS SCK C MODBUS Controller AB GN
24. Read only SCK channel 5 PD5 02B6 Read only SCK channel 5 5 0287 Read only SCK channel 5 PD6 02B7 Read only SCK channel 5 0288 Read only SCK channel 5 PD7 02B8 Read only SCK channel 5 MI7 0289 Read only channel 5 PD8 02B9 Read only SCK channel 5 MI8 028A Read only SCK channel 5 PD9 02BA Read only SCK channel 5 MI9 028B Read only channel 5 PD10 02BB Read only SCK channel 5 MI10 028C Read only SCK channel 5 PD11 02BC Read only SCK channel 5 MI11 028D Read only SCK channel 5 PD12 02BD Read only SCK channel 5 MI12 028E Read only SCK channel 5 PD13 02BE Read only SCK channel 5 MI13 028F Read only SCK channel 5 PD14 02BF Read only SCK channel 5 MI14 0290 Read only SCK channel 5 PD15 02CO Read only SCK channel 5 MI15 0291 Read only SCK channel 5 PD16 02C1 Read only SCK channel 5 MI16 0292 Read only SCK channel 5 PD17 0262 Read only SCK channel 5 MI17 0293 Read only channel 5 PD18 02C3 Read only SCK channel 5 MI18 0294 Read only SCK channel 5 19 02C4 Read only SCK channel 5 MI19 0295 Read only channel 5 PD20 0265 Read only SCK channel 5 MI20 0296 Read only SCK channel 5 PD21 02C6 Read only SCK channel 5 MI21 0297 Read only channel 5 22 02C7 Read only SCK channel 5 MI22 0298 Read only SCK channel 5 PD23 02C8 Read only SCK channel 5 MI23 0299 Read only channel 5 24 02C9 Read only SCK channel 5 MI24 029A Read only SCK channel 5 25 02CA Read only SCK channel 5 MI25 029B Read only SCK channel 5 PD26 02
25. SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel ion 6 status 16 PDO PD1 16 PD2 6 PD3 16 PD4 6PD5 16 PD6 6 PD7 16 PD8 6 PD9 16 PD10 PD11 16 PD12 6 PD13 16 PD14 6 PD15 16 PD16 6 PD17 16 PD18 6 PD19 16 PD20 16 PD21 16 PD22 6 PD23 16 PD24 6 PD25 16 PD26 6 PD27 16 PD28 6 PD29 16 PD30 6 PD31 16 PD32 6 PD33 16 PD34 6 PD35 16 PD36 6 PD37 16 PD38 Modbus address HEX 0330 0331 0332 0333 0334 0335 0336 0337 0338 0339 033A 033B 033C 033D 033E 033F 0340 0341 0342 0343 0344 0345 0346 0347 0348 0349 034A 034B 034C 034D 034E 034F 0350 0351 0352 0353 0354 0355 0356 0357 Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Access ly y ly y ly y ly y ly y ly y ly y ly y ly ly ly y ly y ly y ly y ly y ly y ly y ly y ly y ly ly ly Designat SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel S
26. V DC ZZ T 42 PHOENIX CONTACT 105608_en_00 Installation 6 2 Measuring category and notes on insulation The SCK C MODBUS communication module is assigned to measuring category CAT according to DIN EN 61010 2 30 and must therefore not be used in other category areas This means that the communication module is designed for use in low voltage data pro cessing It must not be located in the immediate vicinity of equipment for power generation or power distribution systems Table 6 1 Notes on insulation SCK C SCK M I 8S SCK M I 4S SCK M U MODBUS 20 20A 1500V 2901674 2903241 2903242 2903591 Rated voltage PV system voltage SELV PELV area max 1500 V Surge voltage according 6 kV to IEC 61010 Pollution degree 2 2 2 2 The termination area of the devices must be inaccessible after installation to ensure suffi cient protection against accidental contact with live parts e g installation in a distributor box or control cabinet In the case of the voltage measuring module plexiglass covers should also be used to pro tect against accidental contact 6 3 Control cabinet Snap the devices onto a 35 mm DIN rail according to DIN EN 50022 in the control cabinet NOTE Degree of protection The IP20 protection IEC 60529 EN 60529 of the device is intended for use in a clean and dry environment Install the module in
27. X 1 1 0 0 2400 X X X X 1 1 0 1 4800 X X X X 1 1 1 0 7200 X X X X 1 1 1 1 None X X X 0 X X X X Even X X 0 1 X X X X X X 1 1 X X X X istop X 0 X X X X X X bit 2stop 1 X X X X X X bits 1 ON 0 OFF X either 82 PHOENIX CONTACT 105608 en 00 Troubleshooting fotheranalog devices are connected to the SCK M I 8S 20A you must make sure that the connected analog device is electrically isolated from the supply of the remaining Solarcheck devices Otherwise invalid values may occur on the analog input side nthe eventof communication errors the communication module is set to the Timeout state after 10 s 105608 en 00 PHOENIX CONTACT 83 Solarcheck family 84 PHOENIX CONTACT 105608 en 00 A Appendix A 1 Register tables The Modbus address area is divided into 10 ranges Ranges 1 9 contain module information MI and process data PD for the SCK inter faces The registers in these ranges can only be read Range 10 contains module information MI and process data PD for the SCK C MOD BUS module All the data can be read Some of the data can be written as well see Locate function on page 68 and Energy saving mode on page 67 for example 105608 en 00 PHOENIX CONTACT 85 Solarcheck family A 1 1 Table A 1 Modbus address HEX 0000 0001 0002 0003 0004 0005 0006 0007 0008 0009 000A 000B 000C 000D 000 000F 0
28. be multiplied by 3 This calculation applies if 24 V is supplied Otherwise please refer to the current consumption diagrams for the modules in Design of the power supply on page 61 105608 en 00 PHOENIX CONTACT 37 Solarcheck family 5 4 Technical data Communication Supply Supply voltage Typical internal power consumption Maximum internal power consumption Maximum current consumption Data interface for SCK bus Cable type Communication protocol Serial interface RS 485 Serial transmission speed Cable length Cable type Communication protocol Optional termination resistor not supplied as standard Operating mode General data Degree of protection Ambient temperature range operation Ambient temperature range storage Dimensions W H D Screw connection solid stranded AWG Tightening torque Humidity at 25 C no condensation Altitude Installation on DIN rail Pollution degree Conformance approvals Conformance Referenced standard SCK C MODBUS Order No 2901674 24 V DC 10 25 22mA 45 800 mA Twisted shielded Proprietary 9 6 14 4 19 2 38 4 kbps 1200 Twisted shielded Modbus RTU 1800 Half duplex IP20 20 C 70 C 40 C 85 22 5 102 106mm 0 2 2 5 mm 0 2 2 5 24 12 0 5 0 6 Nm lt 95 lt 2000m 35 mm DIN EN 50022 2 CE compliant Conformance with EMC Directive 2004 108 EC and Low Volta
29. between the measur ing and communication module The cable length may be exceeded atthe discretion of the installer who is then responsible for any such instances In such cases it is recommended that a corresponding voltage drop calculation is performed for the cable and that the surge protection elements that are used are also taken into consideration Furthermore an on site check should always be per formed to determine whether the required supply voltage is available at the input of the So larcheck devices under all operating conditions 48 PHOENIX CONTACT 105608 en 00 Installation 6 5 Installing the SCK C MODBUS communication module 6 5 1 Addressing the SCK C MODBUS communication module The device may only be opened to set the required address or baud rate The communication module may only be addressed when disconnected from the power supply and from the RS 485 and SCK bus cables The Modbus address and the baud rate are binary coded with the eight DIP switches inside the communication module To set these properties proceed as follows 1 Carefully open the housing cover using a suitable screwdriver 105608 en 00 PHOENIX CONTACT 49 Solarcheck family 4 Remove the protective foil from the DIP switches 5 Seta valid Modbus address using a suitable tool e g a micro screwdriver Optional set the baud rate The default setting is 9600 bps other rates are possible
30. greater influence accordingly For example for the most part the inverter emits high energy interference with 10 20 kHz A distance of atleast 0 3 m must always be maintained Table 6 2 Distances between data and power cables Isolation distance s at 50 Hz Power Without cable Open metal cable Perforated power cable duct duct cable duct 30A 0 06 m 0 05 0 03m 120A 0 24 m 0 18m 0 12m 300A 0 6m 0 45 0 3 600 1 2 0 9 0 6 Shielding and correct connection of the shield have a considerable effect on the signal qual ity of data cables in PV systems In order to prevent inductive interference couplings by the PV power cables the shield should be connected at both ends Example a aaa U masa usan g Influence of shielding on the signal quality Hu Figure 6 2 The left shows the differential signal V and the data quality D with shielding at both ends the right shows a differential signal affected by inductive interference coupling This leads to poor data quality Communication is error prone or not even possible the device could be destroyed 105608_en_00 PHOENIX CONTACT 45 Solarcheck family When installing the data cables the cable routing is also an important consideration never install the data cables D parallel to the power cables P If crossovers are unavoidable data cables must cross at a right angle to the power cable
31. internal communication cycle A proprietary protocol is used for transmission This protocol also ensures that power is supplied to the measuring module For this reason it is only possible to operate the current measuring modules via the corresponding SCK C MODBUS Solarcheck communication module Order No 2901674 The Solarcheck cur rent measuring modules cannot be connected directly to a higher level control unit The internal communication cycle ensures that the measuring data in the communication module is updated very guickly within 2 s The data is acguired and then transferred at the reguest of the communication module It is then available in the communication module for a higher level controller via Modbus For further details on data retrieval refer to Section 5 2 1 on page 33 and 5 2 2 on page 33 105608_en_00 PHOENIX CONTACT 21 Solarcheck family 3 4 Power supply The Solarcheck current measuring modules are supplied via the communication interface to the Solarcheck communication module SCK BUS The transmission protocol includes acorresponding powertransmission function which ensures the permanent operation of the connected measuring modules Observe the installation instructions in Section 6 6 on page 54 and the notes on designing the power supply of the overall Solarcheck system in Section 6 8 on page 61 3 5 Technical data Current measurement Supply Supply voltage Typical internal power consumption Ma
32. just once on the power supply unit 6 8 1 Design of the power supply In addition to collecting data the communication module also supplies power to the con nected measuring modules The power supply for the communication module and the con nected measuring modules therefore has to be incorporated in the design 24VDC input voltage 1096 25 For current consumption all connected measuring modules must also be taken into consideration Let us assume 22 mA for the communication module and the sum of the typical current con sumption of all connected measuring modules To account for the current peaks the result must be multiplied by 3 This calculation applies if 24 V is supplied Otherwise please refer to the current consumption diagrams for the modules 700 50 U 21 6 30 V 600 Ps I N 40 500 br 35 I Na 400 e E 25 a 300 F20 I P mW 200 T2 I mA i L 10 100 L5 0 0 5 10 15 20 25 30 35 Figure 6 15 Performance characteristics of the SCK C MODBUS communication module without connected measuring devices 105608 en 00 PHOENIX CONTACT 61 Solarcheck family 2500 90 Uy 21 6 30 V L I 7 2000 70 r 60 1500 I 50 lt 1 I 40 1000 Sot 30 P mW 500 20 17 B 10 y 0 0 0 5 10 15 35 U IVI Fig
33. measurement with the SCK M U 1500V Example Nominal Lower Upper Resolution Example oper Register rep voltage value value ating voltage resentation 1500 Vpy OVpy 1500 Vpy 1Vpy 850 Vpy 6530 dec 2 VANALOG 10 Vanaroa 0 0053 VANALOG 6 53 VANALOG 4 2 2 Step response time 1600V 10V 1400V 11200V 8V 3 2 D 1000 V 7V 800 V 6V 600 V 5V Un 400 V 4V 200 V 3v t 0 V4 2V Oms 50ms 100 150 ms 200 ms 250 ms 300 ms 350 ms 400 ms 450 ms 500 ms 200 V 1V oo o o EE E Delta t o N ra D N Figure 4 3 Step response time If the module is connected to the SCK M I 8S 20A Solarcheck current measuring module the measured values are available via the SCK C MODBUS Solarcheck communication module In this case the shortest possible retrieval interval depends on the refresh cycle of the Solarcheck devices The fastest possible cycle time between SCK C MODBUS and SCK M I 8S 20A is 2 s For further details on the internal communication cycle refer to Sec tion 5 2 1 on page 33 4 3 Power supply The voltage measuring module is usually supplied directly via the supply output of the SCK M I 8S 20A Solarcheck current measuring module Design the power supply for the entire Solarcheck device chain as described in Power supply for the Solarcheck devices on page 61 If the voltage measuring module is connected to the SCK M I 8S 20A Solarcheck modu
34. of the respective channel Example Channel Status register address Process data Module information data 3 3 0280h From 0281h From 02B1h 5 2 3 2 Structure of the status register The status register of each individual channel T1 T8 is a 16 digit bitmasked word and contains relevant information on the device status of the respective connected measuring module The status register of the communication module contains the relevant information on the device status of the communication module Table 5 3 Structure of the status register High byte Low byte 7 6 5 4 13 12 1 0 7 6 5 4 2 1 0 0 0 O 0 0 DIS INC 0 0 0 Bit Short name Meaning 4 CC Short circuit 5 NC Not connected no module connected 6 ER Error communication error 7 DIS Disabled channel disabled 5 2 3 3 Data registers of the connected measuring modules In general 48 items of process data and 48 items of module information data are available per connected measuring module Various amounts of data are present depending on the device type this data is successively written to the available process data and module information data registers The communication module detects the connected measuring modules by their ID This form of detection means that invalid data and communication errors can be detected reli ably The
35. only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK C PDO short cir Cuit SCK C PD1 not con nected SCK C PD2 commu nication error SCK C ready for operation PD4 switched off SCK C PD5 SCK C PD6 SCK C PD7 SCK C PD8 SCK C PD9 SCK C PD10 SCK C PD11 SCK C PD12 SCK C PD13 SCK C PD14 SCK C PD15 SCK C PD16 avg re quest interval SCK C PD17 num ber of packet re quests Number of packet er rors SCK channel 1 Number of packet er rors SCK channel 2 Number of packet er rors SCK channel 3 Number of packet er rors SCK channel 4 Number of packet er rors SCK channel 5 Number of packet er rors SCK channel 6 Number of packet er rors SCK channel 7 Number of packet er rors SCK channel 8 SCK C PD26 SCK C PD27 SCK C PD28 SCK C PD29 Modbus address HEX 04B0 04B1 04B2 04B3 04B4 04B5 04B6 04B7 04B8 04B9 04BA 04BB 04BC 04BD 04BE 04BF 04C0 04C1 0402 0403 04C4 04C5 04C6 04C7 04C8 04C9 04CA 04CB 04CC 04CD Access Read write Read only Read only Read only Read only Read only Read only Read only Read only Read
36. only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK C PD48 comp level SCK C MIO module ID SCK C MI1 serial num ber SCK C MI2 serial num ber SCK C serial num ber SCK C serial num ber SCK C MI5 name SCK C MI6 name SCK C MI7 name SCK C MI8 name SCK C MI9 name SCK C MI10 name SCK C MI11 name SCK C MI12 name SCK C MI13 name SCK C MI14 name SCK C MI15 name SCK C MI16 name SCK C MI17 name SCK C MI18 name SCK C MI19 name SCK C MI20 name SCK C 21 SCK C MI22 SCK C MI23 SCK C MI24 SCK C MI25 SCK C MI26 SCK C MI27 SCK C MI28 108 PHOENIX CONTACT 105608 en 00 Register tables Table A 14 Range 10 SCK C MODBUS Modbus address 0480h 04E0h Modbus Access Designation Modbus Access Designation address address HEX HEX 049E Read only SCK C PD30 04CE Read only SCK C MI29 049F Read only SCK C PD31 04CF Read only SCK C MI30 04A0 Read only SCK C PD32 tem 04DO Read only SCK C MI31 perature 04A1 Read only SCK C PD33 04D1 Read only SCK C MI32 04A2 Read only SCK C PD34 04D2 Read only SCK C 04A3 Read only SCK C PD35 04D3 Read only SCK C MI34 04A4 Read only SCK C PD36 04D4 Read only SCK C MI35 04A5 Read only SC
37. register tables for all modules in the Solarcheck device range can be found in Register tables on page 85 36 PHOENIX CONTACT 105608 en 00 SCK C MODBUS Solarcheck communication module 5 2 3 4 Compatibility with previous modules The Revision 03 Solarcheck communication module is backwards compatible with its pre decessor Revision 02 Furthermore the device is compatible with all existing Solarcheck measuring modules including devices from the previous generation SCK M 8S 20A Order No 2901672 This ensures that new and old generation devices can be operated on the current commu nication module Mixed operation of devices from both generations is possible on a Revi sion 03 communication module Furthermore this ensures that the existing programming of the higher level controller does not have to be modified if a device is replaced 5 3 Power supply In addition to collecting data the communication module also supplies power to the con nected measuring modules The power supply for the communication module and the con nected measuring modules therefore has to be incorporated in the design 24VDC input voltage 10 25 Forcurrent consumption all connected measuring modules must also be taken into consideration Let us assume 20 mA for the communication module and the sum of the typical current con sumption of all connected measuring modules To account for the current peaks the result must
38. value and permanently subtract it from the measured value re corded during the day This zero calibration can also be performed each night for example to improve general measuring accuracy without an actual offset being generated V M r n N lei 6 7 A 0 4 A 263A loys 6 3 A 0 2 6 1 6 1 0 6 1 v Figure 8 2 System calibration 105608 en 00 PHOENIX CONTACT 69 Solarcheck family 70 PHOENIX CONTACT 105608 en 00 Installation examples 9 Installation examples Here you will find some typical installation examples for medium to large PV systems The examples are schematic and simply illustrate a few possible installation options The mod ularity of the Solarcheck system means that many other arrangements and combinations are possible Solarcheck is a very flexible system which can be effectively incorporated into many system designs making inexpensive solutions possible 9 1 Example 1 SCK C MODBUS installed centrally in the inverter station Solarcheck current mea suring module s without voltage measurement installed in the string combiner box in the PV field The traditional arrangement involves installing the communication module at a central loca tion which allows the advantages of the modular system structure to be demonstrated to very great effect Therefore because power is supplied to the measuring devices in the field via the Solarcheck com
39. voltage 300 70 4 U 21 6 30 V 60 50 4 A 200 I z E 40 150 X E n 30 1003 EN P mW i Mc 20 mA i 50 Lin TR 0 0 0 5 10 15 20 25 30 35 Figure 6 17 Performance characteristics of the voltage measuring module SCK M U 1500V 105608 en 00 PHOENIX CONTACT 63 Solarcheck family 64 PHOENIX CONTACT 105608 en 00 Startup 7 Startup Install the devices as described in the installation instructions Then switch on the power supply to the devices The communication devices take around 10stoinitialize During this time the start routine is indicated by the various flashing signals of the LEDs Start routine 3 5 LED test Ready for RS 485 communication Identify connected measuring modules Start cyclic data retrieval for connected measuring modules see description in SCK internal communication cycle on page 33 If an error is detected when the modules are started this is indicated by a flashing signal at the POWER LED on completion of the LED test The following signals are displayed P Power green 7 4 z LED flashing 9 LED on LED off N Figure 7 1 LED indicators 105608_en_00 PHOENIX CONTACT 65 Solarcheck family 66 PHOENIX CONTACT 105608 en 00 Additional functions 8 Additional functions 8 1 Energy saving mode So that the energy balance of the overall photovoltai
40. 0 99 Solarcheck family Table A 9 Range 5 SCK channel 4 Modbus address 0200h 0260h Modbus Access Designation Modbus Access Designation address address HEX HEX 0228 Read only SCK channel 4 PD39 0258 Read only SCK channel 4 MI39 0229 Read only SCK channel 4 PD40 0259 Read only SCK channel 4 MI40 022A Read only SCK channel 4 PD41 025A Read only SCK channel 4 41 022B Read only SCK channel 4 PD42 025B Read only SCK channel 4 42 022C Read only SCK channel 4 PD43 025C Read only SCK channel 4 43 022D Read only SCK channel 4 PD44 025D Read only SCK channel 4 MI44 022E Read only SCK channel 4 PD45 025E Read only SCK channel 4 MI45 022F Read only SCK channel 4 PD46 025F Read only SCK channel 4 MI46 0260 Read only SCK channel 4 MI47 100 PHOENIX CONTACT 105608 en 00 Register tables A 1 7 Address area range 6 Table A 10 Range 6 SCK channel 5 Modbus address 0280h 02EOh Modbus Access Designation Modbus Access Designation address address HEX HEX 0280 Read only SCK channel 5 status 0280 Read only SCK channel 5 PD47 0281 Read only SCK channel 5 PDO 02B1 Read only SCK channel 5 MIO 0282 Read only SCK channel 5 PD1 02B2 Read only SCK channel 5 MI1 0283 Read only SCK channel 5 PD2 02B3 Read only SCK channel 5 MI2 0284 Read only SCK channel 5 PD3 02B4 Read only SCK channel 5 MI3 0285 Read only SCK channel 5 PD4 02B5 Read only SCK channel 5 MI4 0286
41. 0090 0091 0092 0093 0094 0095 0096 0097 0098 0099 009A 009B 009C 009D 009E 009F 00A0 00A1 00A2 00A3 00A4 00A5 00A6 00A7 Address area range 2 Range 2 SCK channel 1 Modbus address 0080h 00EOh Access Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly Designation SCK channel 1 status SCK channel 1 PDO SCK channel 1 PD1 SCK channel 1 PD2 SCK channel 1 PD3 SCK channel 1 PD4 SCK channel 1 PD5 SCK channel 1 PD6 SCK channel 1 PD7 SCK channel 1 PD8 SCK channel 1 PD9 SCK channel 1 PD10 SCK channel 1 PD11 SCK channel 1 PD12 SCK channel 1 PD13 SCK channel 1 PD14 SCK channel 1 PD15 SCK channel 1 PD16 SCK channel 1 PD17 SCK channel 1 PD18 SCK channel 1 PD19 SCK channel 1 PD20 SCK channel 1 PD21 SCK channel 1 PD22 SCK channel 1 PD23 SCK channel 1 PD24 SCK channel 1 PD25 SCK channel 1 PD26 SCK channel 1 PD27 SCK channel 1 PD28 SCK channel 1 PD29 SCK channel 1 PD30 SCK channel 1 PD31 SCK channel 1 PD32 SCK channel 1 PD33 SCK channel 1 PD34 SCK channel 1 PD35 S
42. 010 0011 0012 0013 0014 0015 0016 0017 Registers data assignment Illustration of the register table for reading 2901672 Modbus address 0000h 005Ch Name SCK channel 1 status SCK channel 1 current 1 SCK channel 1 current 2 SCK channel 1 current 3 SCK channel 1 current 4 SCK channel 1 current 5 SCK channel 1 current 6 SCK channel 1 current 7 SCK channel 1 current 8 SCK channel 1 temp SCK channel 1 voltage SCK channel 2 status SCK channel 2 current 1 SCK channel 2 current 2 SCK channel 2 current 3 SCK channel 2 current 4 SCK channel 2 current 5 SCK channel 2 current 6 SCK channel 2 current 7 SCK channel 2 current 8 SCK channel 2 temp SCK channel 2 voltage SCK channel 3 status SCK channel current 1 Unit Bit mask 1 100 A 1x100 A 1x100 A 1 100 A 1 100 A 1x100 A 1 100 A 1 100 A C Bit mask 1x100 A 1 100 A 1x100 A 1 100 A 1x100 A 1x100 A 1 100 A 1 100 A C Bit mask 1x100 A Modbus Name Unit address HEX 0030 SCK channel 5 1 100 A current 4 0031 SCK channel 5 Ix100 A current 5 0032 SCK channel 5 1 100 A current 6 0033 SCK channel 5 Ix100 A current 7 0034 SCK channel 5 1 100 A current 8 0035 SCK channel 5 C temp 0036 SCK channel 5 V voltage 0037 SCK channel 6 Bit mask stat
43. 023 Read only SCK channel 4 current 2 0053 Read only channel 8 current 6 105608 en 00 PHOENIX CONTACT 91 Solarcheck family Table A 5 Modbus address HEX 0024 0025 0026 0027 0028 0029 002A 002B 002C 002D 002E 002F Register entries for connecting current measuring module 2901672 Modbus address 0000h 005Fh Access Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK channel 4 current 3 SCK channel 4 current 4 SCK channel 4 current 5 SCK channel 4 current 6 SCK channel 4 current 7 SCK channel 4 current 8 SCK channel 4 tempera ture SCK channel 4 voltage SCK channel 5 status SCK channel 5 current 1 SCK channel 5 current 2 SCK channel 5 current 3 Modbus address HEX 0054 0055 0056 0057 0058 0059 005A 005B 005C 005D Access Read only Read only Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK channel 8 current 7 SCK channel 8 current 8 SCK channel 8 tempera ture SCK channel 8 voltage Short circuit Not connected Communication error Digital inputs Ready for operation SCK C module ID 92 PHOENIX CONTACT 105608 en 00 Register tables A 1 3 Table A 6 Modbus address HEX 0080 0081 0082 0083 0084 0085 0086 0087 0088 0089 008A 008B 008C 008D 008E 008F
44. 0251 0252 0253 0254 0255 0256 0257 Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Access ly y ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly Designat SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel ion 4 PD47 14 MIO 4MH 14 MI2 4 14 MI4 4 MI5 14 MIG 4MI7 14 4 MIO 14 MHO 4MI11 14 2 4MI13 14 MI14 4MI15 14 MI16 4MI17 14 MI18 4 MH9 14 MI20 4 MI21 14 MI22 4 MI23 14 MI24 4 MI25 14 MI26 4 MI27 14 MI28 4 MI29 14 4 1 14 MI32 4 14 4 5 14 MI36 4 7 14 MI38 105608 0
45. 03 03 04 B1 00 15 D4 FO Response from module Rx 03 03 2A 00 01 01 23 45 67 89 AB CD EF 43 53 2D 4B 2D 43 4F 4D 42 44 53 55 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 97 3A Response in plain text 03 Addressed module ID 03 Function code 2A Number of subsequent bytes here 42 bytes 21 registers 00 01 Module ID SCK C MODBUS module type 01 23 45 67 89 AB CD EF 4 registers module serial number 43 53 2D 4B 2D 43 4F 4D 42 44 53 55 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Module designation in ASCII code SCK C MODBUS occupies a maximum of 32 characters 97 Checksum 34 PHOENIX CONTACT 105608 en 00 SCK C MODBUS Solarcheck communication module 5 2 3 Register addresses 5 2 3 1 Structure of the register areas Table 5 2 Structure of the register areas Modbus address Contents Designation HEX DEC 0000 005D Data register Rev 02 Copy of the data register for de 0 93 vice revision 02 to ensure com patibility 0080 00B0 Status register PDO PD47 Process data SCK channel 1 128 176 device at T1 00B1 00E0 MIO MI47 Module information data SCK 177 244 channel 1 device at T1 0100 0130 Status register PDO PD47 Process data SCK channel 2 256 304 device at T2 0131 0160 MIO MI47 Module information data SCK 305 523 channel 2 device at T2 0180 01BO Status register PDO
46. 1 01C2 01C3 01C4 01C5 01C6 01C7 01C8 01C9 01CA 01CB 01CC 01CD 01CE 01CF 01DO 01D1 01D2 01D3 01D4 01D5 01D6 01D7 Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Access ly ly ly ly ly ly ly ly y ly y ly y ly y ly y ly y ly y ly y ly y ly ly ly ly ly y ly y ly y ly y ly y ly Designation SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channe SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel 3 PD47 13 MIO 3MH 13 MI2 3 MIS 13 MIA 5 3 MI6 3 MI7 13 MI8 3 MI9 13 MI10 3MI11 13 MI12 3 MI13 13 14 3 MI15 13 MI16 3 MI17 13 MI18 3 MI19 13 MI20 3 MI21 MI22 3 MI23 MI24 3 MI25 3 MI26 3 MI27 13 MI28 3 MI29 3 3 MIS1 13
47. 13 Connection the SCK M I 8S 20A module The cable length between these two devices must not exceed 0 5 m To supply the voltage measuring module wire the supply input P IN to the corresponding supply output on the current measuring module OUT Use twisted and shielded cables for all signal and supply cables to avoid electromagnetic interference from the PV generator e g via the string or bus cables Ground the shield 105608 en 00 PHOENIX CONTACT 59 Solarcheck family 6 7 3 Connecting the measuring module outside of the Solar check device range The voltage measuring module can also be used as a simple analog measuring transducer outside of the Solarcheck device range For this connect the signal output 2 10 V OUT to a suitable analog voltage input of an evaluation unit SCK M U 1500V Power P IN OUTDC24V M4 24V e 2 10V OUT Analog IN Un 10V Unt VOLTAGE INPUT MAX 1500V DC m PE Figure 6 14 Connection outside of the Solarcheck device range Make sure the load does not fall below 10 kO The cable length between these two devices must not exceed 0 5 m In this case power is
48. 3 0134 0135 0136 0137 0138 0139 013A 013B 013C 013D 013E 013F 0140 0141 0142 0143 0144 0145 0146 0147 0148 0149 014A 014B 014C 014D 014E 014F 0150 0151 0152 0153 0154 0155 0156 0157 Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Access ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly Designat SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel ion 2 PD47 12 MIO 2 Ml1 12 MI2 2 MIS 12 MIA 2 MI5 12 MI6 2MI7 12 MI8 2 MI9 12 MI10 2MI11 12 MI12 2MH3 12 14 2 15 12 MI16 2MH7 12 18 2MI19 12 MI20 2 MI21 12 MI22 2 MI23 12 MI24 2
49. 32 mm 6kV 2 10V 0 5 m maximum Twisted shielded IP20 20 C 70 C 40 C 85 C 22 5 102 128 5 mm 0 2 2 5 mm 0 2 2 5 mm 24 12 0 5 0 6 Nm lt 95 lt 2000m 35 mm DIN EN 50022 2 CE compliant Conformance with EMC Directive 2004 108 EC and Low Voltage Directive 2006 95 EC EN 61010 01 2011 7 PHOENIX CONTACT 105608 en 00 SCK C MODBUS Solarcheck communication module 5 SCK C MODBUS Solarcheck communication module 5 1 Function The communication module collects the data from all connected measuring modules and forwards it to a higher level controller via RS 485 Modbus RTU At the same time the connected measuring modules are supplied with power via the com munication cable SCK BUS between the measuring modules and the communication module This distributed structure means that a power supply is not reguired in the string combiner box in the field T1 T2 T3 T4 T5 INPUT SCK MODBUS T6 T7 T8 Figure 5 1 Block diagram of the SCK C MODBUS Solarcheck communication module 5 2 Data acguisition and transfer The Solarcheck communication module acguires the data from all Solarcheck measuring modules connected in parallel Each measuring module is connected to a separate data input T1 T8 This therefore creates a star wiring configuration A maximum of eight mea suring modules can be connected to a communication module A proprietary protocol is
50. 5 0496 0497 0498 0499 04A0 4 O4AF 04B0 04B1 04B2 0483 0484 0485 04B6 04C5 Table A 3 Index PDO PD1 PD2 PD3 PD4 PD5 PD6 PD7 PD8 PD9 PD10 PD11 PD47 Designation SCK C PDO short circuit SCK C not connected SCK C PD2 communication error SCK C PD3 ready for operation SCK C PD4 switched off SCK C PD16 avg reguest interval SCK C PD17 number of packet requests Number of packet errors SCK channel 1 Number of packet errors SCK channel 2 Number of packet errors SCK channel 3 Number of packet errors SCK channel 4 Number of packet errors SCK channel 5 Number of packet errors SCK channel 6 Number of packet errors SCK channel 7 Number of packet errors SCK channel 8 SCK C PD32 temperature SCK C PD46 switch off SCK IF SCK C PD47 identify module SCK C PD48 comp level SCK C MIO module ID SCK C MI1 serial number SCK C MI2 serial number SCK C serial number SCK C serial number SCK C MI5 MI20 name 32 x ASCII SCK M I 8S 20A register contents Designation Channel status Digital input Current channe Current channe Current channe Current channe Current channe Current channe Current channe Current channe Temperature Voltage Unused ie 14 5 16 7 18 Data type Value range Unit Bit mask USIGN16 0 1 INT16 250 2500 A 100 250 2500 A 100 250 2500 A 100 250 2500 A 100 250 2500 A 100 250 2500 A 100 250 2500
51. 9 Table A 13 Range 9 SCK channel 8 Modbus address 0400h 0460h Modbus Access Designation Modbus Access Designation address address HEX HEX 0400 Read only SCK channel 8 status 0430 Read only SCK channel 8 PD47 0401 Read only SCK channel 8 PDO 0431 Read only SCK channel 8 MIO 0402 Read only SCK channel 8 PD1 0432 Read only SCK channel 8 MI1 0403 Read only SCK channel 8 PD2 0433 Read only SCK channel 8 MI2 0404 Read only SCK channel 8 PD3 0434 Read only SCK channel 8 MI3 0405 Read only SCK channel 8 PD4 0435 Read only SCK channel 8 MIA 0406 Read only SCK channel 8 PD5 0436 Read only SCK channel 8 MI5 0407 Read only SCK channel 8 PD6 0437 Read only SCK channel 8 0408 Read only SCK channel 8 PD7 0438 Read only SCK channel 8 MI7 0409 Read only SCK channel 8 PD8 0439 Read only SCK channel 8 MI8 040A Read only SCK channel 8 PD9 043A Read only SCK channel 8 MI9 040B Read only SCK channel 8 PD10 043B Read only SCK channel 8 MI10 040C Read only SCK channel 8 PD11 043C Read only SCK channel 8 MI11 040D Read only SCK channel 8 PD12 043D Read only SCK channel 8 MI12 040E Read only SCK channel 8 PD13 043E Read only SCK channel 8 13 040F Read only SCK channel 8 PD14 043F Read only SCK channel 8 14 0410 Read only SCK channel 8 PD15 0440 Read only SCK channel 8 MI15 0411 Read only SCK channel 8 PD16 0441 Read only SCK channel 8 MI16 0412 Read only SCK channel 8 PD17 0442 Read only SCK channel 8 MI17 0413 Read only SCK channel 8
52. BUS in the inverter station current measuring module with voltage measurement in the string combiner box 72 Figure 9 3 SCK C MODBUS in the inverter station current measuring module in the string combiner box SCK M U 1500V at higher level 738 Figure 9 4 SCK C MODBUS in separate communication box current measuring module without voltage measurement in the string combiner box 74 112 PHOENIX CONTACT 105608 en 00 List of figures Section 10 Figure 10 1 LED indicators ani Ani LI EE PER 75 105608_en_00 PHOENIX CONTACT 113 Solarcheck family 114 PHOENIX CONTACT 105608 en 00 Section 3 Section 4 Section 5 Section 6 Section 8 A2 List of tables Table 3 1 Table 4 1 Table 4 2 Table 4 3 Table 4 4 Table 5 1 Table 5 2 Table 5 3 Table 6 1 Table 6 2 Table 6 3 Table 6 4 Table 6 5 Table 6 6 Table 6 7 Table 6 8 Table 6 9 Table 6 10 Table 6 11 Table 6 12 Table 8 1 Function matrix for current measuring modules 17 Valid voltage ranges part 1 26 Valid voltage ranges part 2 26 5 ede Ee nd 27 System voltage calculation esee 28 Modbus settings sic ie eo re Fesser YD 33 Structure of the register
53. CB Read only SCK channel 5 MI26 029C Read only SCK channel 5 PD27 02CC Read only SCK channel 5 MI27 029D Read only SCK channel 5 PD28 02CD Read only SCK channel 5 MI28 029E Read only SCK channel 5 29 02CE Read only SCK channel 5 MI29 029F Read only channel 5 PD30 02 Read only SCK channel 5 MI30 02A0 Read only SCK channel 5 PD31 02D0 Read only SCK channel 5 MI31 02A1 Read only SCK channel 5 PD32 02D1 Read only SCK channel 5 2 02A2 Read only SCK channel 5 PD33 02D2 Read only SCK channel 5 02A3 Read only channel 5 4 0203 Read only SCK channel 5 MI34 02A4 Read only SCK channel 5 PD35 02D4 Read only SCK channel 5 MI35 02A5 Read only channel 5 PD36 0205 Read only SCK channel 5 MI36 02A6 Read only SCK channel 5 PD37 02D6 Read only SCK channel 5 MI37 02A7 Read only channel 5 PD38 0207 Read only SCK channel 5 MI38 105608_en_00 PHOENIX CONTACT 101 Solarcheck family Table A 10 Modbus address HEX 02A8 02A9 02AA 02AB 02AC 02AD 02AE 02AF Range 6 channel 5 Modbus address 0280h 02E0h Access Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK channel 5 PD39 SCK channel 5 PD40 SCK channel 5 PD41 SCK channel 5 PD42 SCK channel 5 PD43 SCK channel 5 PD44 SCK channel 5 PD45 SCK channel 5 PD46 Modbus address HEX 02D8 02D9 02DA 02DB 02DC 02DD 02DE 02DF 02EO Access Read only Read only Read only
54. CK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel ion 6 PD47 6 MIO 6MH 16 MI2 6 MIS 16 MIA 6 MI5 6 6 MI7 6 MI8 6 MI9 16 MI10 6MI11 16 MI12 6MH3 16 MI14 6 MI15 16 MI16 6 MI17 16 MI18 6MI19 16 MI20 6 21 16 MI22 6 MI23 16 MI24 6 MI25 16 MI26 6 MI27 6 MI28 6 MI29 16 MI30 6 MI31 6 MI32 6 MIS3 16 MI34 6 5 6 MI36 6 MI37 16 MI38 105608_en_00 PHOENIX CONTACT 103 Solarcheck family Table A 11 Range 7 SCK channel 6 Modbus address 0300h 0360h Modbus Access Designation Modbus Access Designation address address HEX HEX 0328 Read only SCK channel 6 PD39 0358 Read only SCK channel 6 MI39 0329 Read only SCK channel 6 PD40 0359 Read only SCK channel 6 MI40 032A Read only SCK channel 6 PD41 035A Read only SCK channel 6 41 032B Read only SCK channel 6 PD42 035B Read only SCK channel 6 MI42 032C Read only SCK channel 6 PD43 035C Read only SCK channel 6 M143 032D Read only SCK channel 6 PD44 035D Read only SCK channel 6 MI44 032E Read only SCK channel 6 PD45 035E Read only SCK
55. CK channel 1 PD36 SCK channel 1 PD37 SCK channel 1 PD38 Modbus address HEX 00BO 00B1 00B2 00B3 00B4 00B5 00B6 00B7 00B8 00B9 00BA 00BB 00BC 00BD 00BE 00BF 00C0 00C1 00C2 00C3 00C4 00C5 00C6 00C7 00C8 00C9 00CA 00CB 00CC 00CD 00CE 00CF 0000 0001 0002 0003 0004 0005 0006 0007 Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Access ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly Designation SCK channel 1 PD47 SCK channel 1 MIO SCK channel 1 MI1 SCK channel 1 MI2 SCK channel 1 SCK channel 1 MI4 SCK channel 1 5 SCK channel 1 SCK channel 1 MI7 SCK channel 1 MI8 SCK channel 1 MI9 SCK channel 1 MI10 SCK channel 1 MI1 1 SCK channel 1 12 SCK channel 1 MI13 SCK channel 1 14 SCK channel 1 MI15 SCK channel 1 MI16 SCK channel 1 MI17 SCK channel 1 MI18 SCK channel 1 MI19 SCK channel 1 MI20 SCK channel 1 MI21 SCK channel 1 MI22 SCK channel 1 MI23 SCK channel 1 MI24 SCK channel 1 MI25 SCK channel 1 MI26 SCK channel 1 MI27 SCK channel 1 MI28 SCK channel 1 MI29 SCK ch
56. D2 AB GND2 B A 1 MODBUS RTU RS 485 Figure 6 5 Modbus connection 4 Finally install the supply connections To do this wire one of the supply inputs 24V or GND1 to the positive or negative output of the supply device The remaining two free terminal blocks of the supply input on the communication module can be used to implement the supply to other 24 V devices as a parallel connection Note the design of the power supply for all connected devices In order to avoid possible arc discharge during installation do not connect the devices while the power is connected Only switch on the power supply once the Solarcheck devices have been installed 105608 en 00 PHOENIX CONTACT 53 Solarcheck family 6 6 Installing SCK M I xx current measuring modules Do not open or modify the device Snap the device onto a 35 mm DIN rail according to DIN EN 50022 in the control cabinet Itis a good idea to install the PV string cables that are to be measured first Route the current measuring cables through the through connections indicated The maxi mum cable diameter of the current measuring cable including insulation must not exceed 9 5 mm Figure 6 6 Assignment of the current measuring channels For current measurement only use suitable solar cables with insulation and conductor cross sections that are appropriate for the voltages and currents required in the system For the cable design in PV systems
57. D44 8 PD45 18 PD46 Modbus address HEX 0449 044A 044B 044 044D 044E 044F 0450 0451 0452 0453 0454 0455 0456 0457 0458 0459 045A 045B 045C 045D 045E 045F 0460 Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Access ly ly ly ly ly ly ly y ly y ly y ly y ly y ly y ly ly ly ly ly ly Designat SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channe SCK channel SCK channel SCK channel SCK channel SCK channel ion 18 MI24 8 MI25 18 MI26 8 MI27 18 MI28 8 MI29 18 8 MI31 18 2 8 18 MI34 18 5 18 MI36 8 MI37 18 MI38 8 MI39 18 MI40 8 Ml41 18 MI42 8 Ml43 18 Ml44 8 45 18 MI46 8MI47 105608 en 00 PHOENIX CONTACT 107 Solarcheck family A 1 11 Table A 14 Modbus address HEX 0480 0481 0482 0483 0484 0485 0486 0487 0488 0489 048A 048B 048C 048D 048E 048F 0490 0491 0492 0493 0494 0495 0496 0497 0498 0499 049A 049B 049C 049D Address area range 10 Range 10 SCK C MODBUS Modbus address 0480h 04E0h Access Read only Read
58. Ensure reliable ground contact by using PE terminal blocks such as the UT 2 5 PE feed through terminal block Order No 3044092 Order No 2903591 PHOENIX ICONTACT Mes SCK M U 1500V 9 SCK M U 1500V Order No 2903591 Tm m z tov OUT ov 24v GND2 10V ov 24v GND2 10v O DDDB 2000 0 5 0 6 V Figure 6 12 PE connection NOTE Risk of damage to equipment It is imperative that the PE contact is connected correctly as in addition to its safety re lated function it is also used as the reference potential for measurement Operation without PE connection can result in damage to the device 58 PHOENIX CONTACT 105608 en 00 Installation 6 7 2 Connecting the measuring module to the 1 85 20 Solarcheck current measuring module Connect the analog signal cable to the corresponding outputs 2 10 V OUT on the volt age measuring module and wire them to the analog input of the current measuring module 0 10 V IN SCK M U 1500V SCK M I 8S 20A P_IN P OUT e GNDI 240 e 2 10V OUT 0 10V GND2 4 GND2 10V Uy DER Na VOLTAGE INPUT MAX 1500V DC SCK BUS DIN E a 5 Figure 6
59. K C PD37 04D5 Read only SCK C MI36 04A6 Read only SCK C PD38 04D6 Read only SCK C MI37 04A7 Read only SCK C PD39 04D7 Read only SCK C MI38 04A8 Read only SCK C PD40 04D8 Read only SCK C MI39 04A9 Read only SCK C PD41 04D9 Read only SCK C MI40 04AA Read only SCK C PD42 04DA Read only SCK C 41 04AB Read only SCK C PD43 04DB Read only SCK C MI42 4 Read only SCK C PD44 04DC Read only SCK C MI43 04AD Read only SCK C PD45 04DD Read only SCK C MI44 04AE Read write SCK C PD46 switch 04DE Read only SCK C Ml45 off SCK IF 04AF Read write SCK C PD47 identify 04DF Read only SCK C MI46 module 04 0 Read only SCK C MI47 105608 en 00 PHOENIX CONTACT 109 Solarcheck family A2 Accessories The following items are available as accessories Table A 15 List of accessories Name Order Description No SK 35 D 3026890 Shield connection clamp for connecting the shield to PE in the string combiner box ME SAS 2853899 Shield connection clamp for connecting the shielding to GND2 UT 2 5 PE 3044092 Feed through terminal block for PE connection PT 1X2 BE 2856113 Base element for surge protection of the SCK bus cable and RS 485 Modbus cable PT 1X2 24DC ST 2856032 Connection element for surge protection of the SCK bus cable PT 3 HF 12DC ST 2858043 Connection element for surge protection of the RS 485 Modbus cable PSI REP RS485W2 2313096 Repeater for signal isolation and signal amplification in RS
60. LED There is no data from one or more d 0000 flashing 1 4 Hz connected measuring modules Cause Short circuit on the SCK bus connection Measures 1 Locate the short circuit disconnect all measuring modules from the communication module one at a time until the affected cable is found Check the affected cable and remove the short circuit After removing the error cause test the function of the modules The short circuit message should no longer be present in the status register If the message is still present a The short circuit has not been removed completely see item 1 Or b Internal components have been damaged by the short circuit high currents possible In this case replace the communication module Table 10 3 Scenario 2 SCK C MODBUS Device Status register LED indicator error description SCK C MODBUS 2901674 There is no data from one or more con nected measuring modules Entry 1 in bit5 ofthe POWER LED low byte permanently ON 0010 0000 Cause There is no connection to the measuring module at the affected input 3 Measures 1 2 Check the affected cable Check whether the SCK BUS plug of the affected measuring module is connected correctly Correct the connection if necessary After removing the error cause test the function of the affected modules If the message is still present a The connection is still fau
61. MI32 3 MIS3 MI34 5 MI36 3 MI37 3 MI38 105608 en 00 PHOENIX CONTACT 97 Solarcheck family Table A 8 Modbus address HEX 01A8 01A9 01AA 01AB 01AC 01AD 01AE 01AF Range 4 SCK channel Modbus address 0180h 01E0h Access Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK channel 3 PD39 SCK channel 3 PD40 SCK channel PD41 SCK channel 3 PD42 SCK channel 3 PD43 SCK channel 3 PD44 SCK channel 3 PD45 SCK channel 3 PD46 Modbus address HEX 01D8 01D9 01DA 01DB 01DC 01DD 01DE 01DF 01E0 Access Read only Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK channel 3 MI39 SCK channel 3 MI40 SCK channel 3 MI41 SCK channel 42 SCK channel 43 SCK channel 3 Ml44 SCK channel 3 MI45 SCK channel 3 MI46 SCK channel 3 MI47 98 PHOENIX CONTACT 105608_en_00 Register tables A 1 6 Table A 9 Modbus address HEX 0200 0201 0202 0203 0204 0205 0206 0207 0208 0209 020A 020B 020C 020D 020E 020F 0210 0211 0212 0213 0214 0215 0216 0217 0218 0219 021A 021B 021C 021D 021E 021F 0220 0221 0222 0223 0224 0225 0226 0227 Address area range 5 Range 5 SCK channel 4 Modbus address 0200h 0260h Acces Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Re
62. Modbus address 0100h 0160h Acces Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on 5 ly ly ly ly ly ly ly ly y ly y ly y ly y ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly ly y ly y ly y ly y ly Designat SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channe SCK channel SCK channel SCK channel SCK channe SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel ion 2 status 12 PDO 2 PD1 12 PD2 2 PD3 12 PDA 2 PD5 12 PD6 2 PD7 12 PD8 2 PD9 12 PD10 2 PD11 12 PD12 2 PD13 12 PD14 2 PD15 12 PD16 2 PD17 12 PD18 2 PD19 12 PD20 2PD21 12 PD22 2 PD23 12 PD24 2 PD25 12 PD26 2 PD27 12 PD28 2 PD29 12 PD30 2 PD31 12 PD32 2 PD33 12 PD34 2 PD35 12 PD36 2 PD37 12 PD38 Modbus address HEX 0130 0131 0132 013
63. PHOENIX CONTACT SCK C MODBUS Solarcheck communication module 5 2 1 SCK internal communication cycle In the SCK internal communication cycle all connected measuring modules are queried in parallel after a fixed defined request signal The transmitted measured values are saved in the corresponding registers This request cycle permanently runs automatically The baud rate is fixed at 1200 baud Depending on the amount of data transmitted the cycle time is around 1 2 s on average New measured values are therefore only available in the registers of the communication module for the higher level controller once a cycle has been run refer to Figure 5 3 on page 32 In the event of a data transmission error between the measuring and communication mod ules the data is requested again up to three times If no valid data is available after the third request the device indicates an internal error If the module does not receive a response after 10 s it enters Timeout status For further details on error messages refer to Troubleshooting on page 75 5 2 2 RS 485 communication The register entries measured data are transmitted to the higher level controller via the RS 485 interface using Modbus RTU A unique address is set on the communication module for module and data assignment The DIP switches inside the device are used for this The procedure for setting the module address is described in Installing the SCK C MODBUS co
64. Read only Read only Read only Read only Read only Read only Designation SCK channel 5 MI39 SCK channel 5 MI40 SCK channel 5 MI41 SCK channel 5 MI42 SCK channel 5 MI43 SCK channel 5 MI44 SCK channel 5 MI45 SCK channel 5 MI46 SCK channel 5 MI47 102 PHOENIX CONTACT 105608 en 00 Register tables A 1 8 Table A 11 Modbus address HEX 0300 0301 0302 0303 0304 0305 0306 0307 0308 0309 030A 030B 030C 030D 030E 030F 0310 0311 0312 0313 0314 0315 0316 0317 0318 0319 031A 031B 031C 031D 031E 031F 0320 0321 0322 0323 0324 0325 0326 0327 Address area range 7 Range 7 SCK channel 6 Modbus address 0300h 0360h Access Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on ly ly ly ly ly ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly ly ly ly ly ly ly y ly y ly y ly y ly Designat SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel
65. V analog signal via the analog output gt E U OUT Figure 4 1 Block diagram Rx 20 0 1500 Marginal conditions for valid voltage values 1 Ur gt PE gt U 2 0 lt U lt 1500V 3 0 lt U lt 1500V 4 U U lt 1500V The difference between U and U must not exceed 1500 V Negative differential mode volt ages are not permitted Itis imperative thatthe PE contact is connected as in addition to its safety related function itis also used as the reference potential for measurement 105608 en 00 PHOENIX CONTACT 25 Solarcheck family Different potential levels may occur depending on the structure and connection of the PV system The following voltage ranges can be acquired by the device and represented as an analog value Table 4 1 U U 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 Table 4 2 U U 0 100 200 300 400 500 600 700 Valid voltage ranges part 1 2 00 V 2 53 3 07 V 3 60 V 4 13 V 4 67 V 5 20 V 5 73 V 6 27 V 6 80 V 7 33 V 7 87 V 8 40 V 8 93 V 9 47 V 10 00 V 100 2 53 V 3 07 V 3 60 V 4 13 V 4 67 V 5 20 V 5 73 V 6 27 V 6 80 V 7 33 7 87 V 8 40 V 8 93 V 9 47 V 10 00 V 200 3 07 V 3 60 V 4 13 V 4 67 V 5 20 V 5 73 V 6 27 V 6 80 V 7 33 V 7 87 V 8 40 V 8 93 V 9 47 V 10 00 V 300 3 60 V 4 43 V 4 67 V 5 20 V 5 73 V 6 27 V 6 80 V
66. ad on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on 5 ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly ly ly ly ly Designation SCK channe SCK channe SCK channe SCK channe SCK channe SCK channe SCK channe SCK channe SCK channe SCK channe SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel 4 status 14PDO 4PDI 14 PD2 4 PD3 14 PD4 4 PD5 14 PD6 4 PD7 14 PD8 4 PD9 14 PD10 4 PD11 14 PD12 4 PD13 14 PD14 4 PD15 14 PD16 4 PD17 14 PD18 4 PD19 14 PD20 4 PD21 14 PD22 4 PD23 14 PD24 4 PD25 14 PD26 4 PD27 14 PD28 4 PD29 14 PD30 4 PD31 14 PD32 4 PD33 14 PD34 4 PD35 14 PD36 4 PD37 14 PD38 Modbus address HEX 0230 0231 0232 0233 0234 0235 0236 0237 0238 0239 023A 023B 023C 023D 023E 023F 0240 0241 0242 0243 0244 0245 0246 0247 0248 0249 024A 024B 024C 024D 024E 024F 0250
67. annel 1 MI30 SCK channel 1 MI31 SCK channel 1 2 SCK channel 1 SCK channel 1 MI34 SCK channel 1 MI35 SCK channel 1 MI36 SCK channel 1 7 SCK channel 1 8 105608 en 00 PHOENIX CONTACT 93 Solarcheck family Table A 6 Modbus address HEX 00A8 00A9 00AA 00AB 00AC 00AD OOAE OOAF Range 2 SCK channel 1 Modbus address 0080h 00EOh Access Read only Read only Read only Read only Read only Read only Read only Read only Designation SCK channel 1 PD39 SCK channel 1 PD40 SCK channel 1 PD41 SCK channel 1 PD42 SCK channel 1 PD43 SCK channel 1 PD44 SCK channel 1 PD45 SCK channel 1 PD46 Modbus address HEX 00D8 00D9 00DA 00DB 00DC 00DD 00DE 00DF 00 0 Read on Read on Read on Read on Read on Read on Read on Read on Read on Access ly y ly y ly y ly Designation SCK channel 1 9 SCK channel 1 MI40 SCK channel 1 MI41 SCK channel 1 42 SCK channel 1 43 SCK channel 1 44 SCK channel 1 MI45 SCK channel 1 MI46 SCK channel 1 MI47 94 PHOENIX CONTACT 105608 en 00 Register tables A 1 4 Table A 7 Modbus address HEX 0100 0101 0102 0103 0104 0105 0106 0107 0108 0109 010A 010B 010C 010D 010E 010F 0110 0111 0112 0113 0114 0115 0116 0117 0118 0119 011A 011B 011C 011D 011E 011F 0120 0121 0122 0123 0124 0125 0126 0127 Address area range 3 Range 3 SCK channel 2
68. c system is influenced as little as pos sible the energy demands of a monitoring system should be very low This is why the So larcheck communication module has a switch off function This function is simply activated by setting a time value in seconds in one of the registers for the communication module The module then remains in energy saving mode for the specified time meaning that the connected measuring modules are switched off Once this time has elapsed the communi cation module independently resumes communication and power supply to the connected measuring units In this way the energy used by monitoring equipment can be significantly reduced Example switching off nighttime monitoring Because the PV system does not operate at night for example nighttime monitoring for cur rent and voltage measurement is not necessary either as there are no corresponding values during this time Therefore monitoring could be switched off for 10 hours 21 00 to 07 00 for example Depending on the location of the system and the time of year the shutdown period can be further extended Nevertheless if for example status monitoring is sporadically requested during the inactive nighttime period it is possible to program a cycle to wake up the system for a few minutes for example The individual operating time of the devices can be designed completely via the higher level controller Programming shutdown A USIGN16 bit value is stored in re
69. channe SCK channe SCK channe SCK channe SCK channe SCK channe SCK channe SCK channe 7 status 17 PDO 7 PD1 17 PD2 7 PD3 17 PDA 7 PD5 17 PD6 7 PD7 17 PD8 7 PD9 17 PD10 7 PD11 17 PD12 7 PD13 17 PD14 7 PD15 17 PD16 7 PD17 17 PD18 7 PD19 17 PD20 7 PD21 17 PD22 7 PD23 17 PD24 7 PD25 17 PD26 7 PD27 17 PD28 7 PD29 17 PD30 7 PD31 17 PD32 7 17 PD34 7 PD35 17 PD36 7 PD37 17 PD38 Modbus address HEX 03B0 03B1 03B2 03B3 03B4 03B5 03B6 03B7 03B8 03B9 03BA 03BB 03BC 03BD 03BE 03BF 03C0 03C1 03C2 03C3 03C4 03C5 03C6 03C7 03C8 03C9 03CA 03CB 03CC 03CD O3CE 03CF 03D0 03D1 03D2 03D3 03D4 03D5 03D6 03D7 Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Access ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly ly ly Designation SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channe
70. channel 6 MI45 032F Read only SCK channel 6 PD46 035F Read only SCK channel 6 MI46 0360 Read only SCK channel 6 MI47 104 PHOENIX CONTACT 105608 en 00 Registe r tables A 1 9 Table A 12 Modbus address HEX 0380 0381 0382 0383 0384 0385 0386 0387 0388 0389 038A 038B 038C 038D 038E 038F 0390 0391 0392 0393 0394 0395 0396 0397 0398 0399 039A 039B 039C 039D 039E 039F 03A0 03A1 03A2 03A3 03A4 03A5 03A6 03A7 Address area range 8 Range 8 SCK channel 7 Modbus address 0380h 03EOh Acces Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on 5 ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly Designation SCK channe SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK
71. commu nication module via RS 485 Modbus RTU As an option the output can also be connected to any analog 0 10 V input of a controller for example Observe the installation instructions in Installing the SCK M U 1500V voltage measuring module on page 57 for integration and installation of the voltage measuring module The voltage value is mapped as a 2 10 V signal Due to the live zero point of the output cable break detection is integrated automatically live zero 4 2 1 Representation of voltage values at the analog output The following calculation is used as the basis for mapping the system voltage values Table 4 4 System voltage calculation Transfer function Resulting system voltage Us 5 U 2V Ue 252 X Us vour 375V This results in the following value representation 10000 10V 9000 9v gt 8000 8 gt 7000 7V 6000 6V 5000 5V 4000 4V 3000 3V 2000 2V gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt T N e wo N o N e 19 Figure 4 2 Value representation for voltage measurement Y1 left decimal register value Y2 right analog value U OUT X system voltage 28 PHOENIX CONTACT 105608 en 00 Solarcheck string voltage
72. e A 10 Table A 11 Table A 12 Table A 13 Table A 14 Table A 15 Structure of the status register i 75 Scenario 1 SCK C MODBUS essen 76 Scenario 2 SCK C MODBUS seen 76 Scenario 3 SCK C MODBUS sese 77 Scenario 4 SCK C MODBUS 77 Scenario 5 SCK C MODBUS sese 78 Scenario 6 SCK C MODBUS i 78 Scenario 7 SCK M I 79 Scenario 8 85 20 79 Scenario 9 88 20 80 Scenario 10 SCK M I 8S 20A 0 1500 80 Scenario 11 SCK M I 8S 20A other analog device 81 Scenario 12 SCK M U 1500V nn ne nnr nn nn nnnu 81 ono sd eoque ce Pi te EU oe ee 82 Illustration of the register table for reading 2901672 Modbus address 0000h 005Ch 86 Register contents for the 88 SCK M I 8S 20A register contents 88 SCK M I 4S 20A register contents essen 89 Register entries for connecting current measuring module 2901672 Modbus address 0000h 005Fh 91 Range 2 SCK channel 1 Modbus address 0080h 00EOh 93 Range 3 SCK channel 2 Modbus address 0100h
73. e A 5 Register entries for connecting current measuring module 2901672 Modbus address 0000h 005Fh Modbus Access Designation Modbus Access Designation address address HEX HEX 0000 Read only SCK channel 1 status 0030 Read only channel 5 current 4 0001 Read only SCK channel 1 current 1 0031 Read only channel 5 current 5 0002 Read only SCK channel 1 current 2 0032 Read only channel 5 current 6 0003 Read only SCK channel 1 0033 Read only channel 5 current 7 0004 Read only SCK channel 1 current4 0034 Read only channel 5 current 8 0005 Read only SCK channel 1 current5 0035 Read only channel 5 tempera ure 0006 Read only SCK channel 1 current 6 0036 Read only channel 5 voltage 0007 Read only SCK channel 1 current 7 0037 Read only channel 6 status 0008 Read only SCK channel 1 current 8 0038 Read only channel 6 current 1 0009 Read only a channel 1 tempera 0039 Read only channel 6 current 2 ure 000A Read only SCK channel 1 voltage 003A Read only SCK channel 6 current 000B Read only SCK channel 2 status 003B Read only channel 6 current 4 000C Read only SCK channel 2 current 1 008C Read only channel 6 current 5 000D Read only SCK channel 2 current2 003D Read only channel 6 current 6 000E Read only SCK channel 2 current 3 003E Read only channel 6 current 7 000F Read only SCK channel 2 current 4 Read only channel 6 current 8 0010 Read only SCK channel 2 curr
74. e device with an arrow 105608 en 00 PHOENIX CONTACT 79 Solarcheck family Table 10 10 Scenario 9 SCK M I 8S 20A Device Status register LED indicator error description SCK M I 8S 20A 2903241 No entry POWER LED The current values do not correspond SN Cause Datatransmission is disrupted between the measuring and communication modules and causes incorrect values in the current value registers The measuring channels were magnetized Measures 1 Inthe case of incorrect transmission related values proceed as described in Scenar io 3 in Table 10 4 on page 77 2 Inthe case of permanently altered measured values check whether a current value is also present in defined zero current situations e g at night If this is the case an offset has been caused by magnetization Proceed as described in Section 8 3 on page 69 Note corresponding tests on the devices have shown that the components used are very resistant to magnetization Magnetization therefore occurs very rarely Nevertheless it can be caused by multiple rising high current edges in the us range for example These edges are not usually present in PV systems Table 10 11 Scenario 10 SCK M I 8S 20A SCK M U 1500V Device Status register LED indicator error description SCK M I 8S 20A 2903241 No entry POWER LED SCK M U 1500V 2903591 ON Data from the connected SCK M U 1500V voltage measuring
75. e installation instructions as described When installing and operating the device the applicable regulations and safety directives including national safety di rectives as well as generally approved technical regulations must be observed The safety data is provided in this user manual and on the certificates conformity assess ment additional approvals where applicable The devices are only to be used as described here Phoenix Contact accepts no liability ifthe devices are used for anything other than their designated use Any use other than the designated use may lead to malfunction or irreversible damage of the devices NOTE Electrostatic discharge The devices contain components that can be damaged or destroyed by electrostatic dis charge When handling the device observe the necessary safety precautions against electrostatic discharge ESD according to EN 61340 5 1 and EN 61340 5 1 NOTE Degree of protection The IP20 protection IEC 60529 EN 60529 of the devices is intended for use in a clean and dry environment Install the module in housing with at least IP54 protection according to EN 60529 The stated limits concerning mechanical or thermal loads on the modules must not be exceeded WARNING Risk of electric shock Do not install voltage measurement while the system is in operation High voltages may be present in parts of the system even in diffuse daylight Observe all statutory require ments for live
76. e surge protection for RS 485 data cables in the immediate vicinity of the SCK C MODBUS and of the higher level controller see Accesso ries on page 110 Repeater To decouple or improve signals in networks e g to cover large distances a repeater can be inserted in the RS 485 net work For example use a PSI REP RS485W2 Order No 2313096 for this Table 6 4 SCK bus cabling recommendations SCK bus Cable 0 75 mm twisted pair single shielding Shielding Connect both ends of the shielding to ground Surge protection For cables lengths gt 10 m install appropriate surge protection for 24 V DC systems in the immediate vicinity of the SCK C MODBUS and of the connected Solarcheck measuring mod ule see Accessories on page 110 Repeater A repeater cannot be used in the SCK bus cable as it would affect power supply to the connected measuring devices SCK M U 1500V Table 6 5 Analog connection power supply cabling recommendations Analog connection power supply Cable 0 75 mm twisted pair single shielding maximum length of 0 5m Shielding Connect both ends of the shielding to ground Table 6 6 Voltage connection cabling recommendations Voltage connection Cable gt 0 75 double insulated appropriate to system volt age short circuit proof and ground fault proof installation 105608 en 00 PHOENIX CONTACT 47 Solarcheck family
77. ed in the technical documentation at its own discretion and without giving prior notice insofar as this is reasonable for the user The same applies to any technical changes that serve the purpose of technical progress The receipt of technical documentation in particular user documentation does not consti tute any further duty on the part of Phoenix Contact to furnish information on modifications to products and or technical documentation You are responsible to verify the suitability and intended use of the products in your specific application in particular with regard to observ ing the applicable standards and regulations All information made available in the technical data is supplied without any accompanying guarantee whether expressly mentioned im plied or tacitly assumed In general the provisions of the current standard Terms and Conditions of Phoenix Contact apply exclusively in particular as concerns any warranty liability This manual including all illustrations contained herein is copyright protected Any changes to the contents or the publication of extracts of this document is prohibited Phoenix Contact reserves the right to register its own intellectual property rights for the product identifications of Phoenix Contact products that are used here Registration of such intellectual property rights by third parties is prohibited Other product identifications may be afforded legal protection even where they may not be
78. emp SCK channel 4 voltage SCK channel 5 status SCK channel 5 current 1 SCK channel 5 current 2 SCK channel 5 current 3 0000h 005Ch Unit 1x100 A 1 100 A 1x100 A Ix100 A 1 100 A 1 100 A 1x100 A C Bit mask 1x100 A 1x100 A 1x100 A 1 100 A 1 100 A 1 100 A 1x100 A 1 100 A C Bit mask 1 100 A 1 100 A 1 100 A Modbus Name Unit address HEX 0048 SCK channel 7 1 100 A current 6 0049 SCK channel 7 1 100 A current 7 004A SCK channel 7 1x100 A current 8 004B SCK channel 7 C temp 004C SCK channel 7 V voltage 004D SCK channel 8 Bit mask status 004E SCK channel 8 1 100 A current 1 004F SCK channel 8 Ix100 A current 2 0050 SCK channel 8 1 100 A current 3 0051 SCK channel 8 Ix100 A current 4 0052 SCK channel 8 1 100 A current 5 0053 SCK channel 8 Ix100 A current 6 0054 SCK channel 8 1x100 A current 7 0055 SCK channel 8 Ix100 A current 8 0056 SCK channel 8 C temp 0057 SCK channel 8 IV voltage 0058 Short circuit 0059 Not connected 005A Communication error 005B Digital inputs 005C Ready for opera tion 005D SCK C module ID 105608 en 00 PHOENIX CONTACT 87 Solarcheck family Table A 2 Register contents for the SCK C MODBUS Modbus address HEX 0480 0481 0482 0483 0484 0490 0491 0492 0493 0494 049
79. ent 5 0040 Read only channel 6 tempera ture 0011 Read only SCK channel 2 current 0041 Read only SCK channel 6 voltage 0012 Read only SCK channel 2 current 7 0042 Read only channel 7 status 0013 Read only SCK channel 2 current 8 0043 Read only channel 7 current 1 0014 Read only SCK channel 2 tempera 0044 Read only channel 7 current 2 ture 0015 Read only SCK channel 2 voltage 0045 Read only channel 7 current 0016 Read only SCK channel 3 status 0046 Read only channel 7 current 4 0017 Read only SCK channel current 1 0047 Read only channel 7 current 5 0018 Read only SCK channel current 2 0048 Read only channel 7 current 6 0019 Read only SCK channel current 0049 Read only channel 7 current 7 001A Read only SCK channel current 4 004A Read only channel 7 current 8 001B Read only SCK channel current 5 0048 Read only UA channel 7 tempera ure 001C Read only SCK channel current 6 004C Read only channel 7 voltage 001D Read only SCK channel current 7 004D Read only channel 8 status 001E Read only SCK channel current 8 004E Read only channel 8 current 1 001F Read only MA channel tempera 004 Read only channel 8 current 2 ure 0020 Read only SCK channel 3 voltage 0050 Read only channel 8 current 0021 Read only SCK channel 4 status 0051 Read only channel 8 current 4 0022 Read only SCK channel 4 current 1 0052 Read only channel 8 current 5 0
80. ge Directive 2006 95 EC EN 61010 01 2011 7 38 PHOENIX CONTACT 105608_en_00 Installation 6 Installation 6 1 Connection description SCK C MODBUS Order No 2901674 Connection terminal blocks for SCK measuring module T1 T4 Connection terminal blocks for SCK measuring module T5 T8 Connection terminal blocks for 24 V DC GND1 power supply Connection terminal blocks for RS 485 Modbus A B Green LED status diagnostics indicator P power supply error diagnostics Green LED status indicator TX transmit data Green LED status indicator RX receive data GND2 shield Snap on foot for DIN rail mounting Block diagram RS 485 B GND2 HC GND2 8 S O o 8 9 ba 0 22 oO fy 9 O TO O we da E 24 V DC 24V DC GND1 GND1 105608_en_00 PHOENIX CONTACT 39 Solarcheck family SCK M I 8S 20A Order No 2903241 1 Connection terminal blocks for power supply of optionally connected voltage measuring module P OUT 2 Analog input 0 10 V 3 Through connections for current mea surement 1 8 max 20 A per connec tion 4 Snap on foot for DIN rail mounting 5 Connection terminal blocks for digital switch contact D IN 6 Connection terminal blocks for commu nication cable SCK BUS 7 Green LED stat
81. gister 04AEh for the required time Table 8 1 Assignment time register value Time Register value 10s 10 decimal 60s 60 decimal 5 min 300 decimal 1hr 3600 decimal Entry of the value immediately places the module in energy saving mode The mode is ac tive for at least 10 s minimum value and can be extended to 18 2 hours 65535 s maxi mum value Writing the value to the register must therefore be supported on the controller side with a corresponding timer Energy saving mode is either stopped automatically after the set time has elapsed or by manually setting the time value in the register to 0 via the controller The devices then start automatically and run as described for startup in 7 on page 65 105608 en 00 PHOENIX CONTACT 67 Solarcheck family 8 2 Locate function Large photovoltaic power stations require good logistics and documentation in order to as sign data to the actual position in the field Checking the assignment is an important and to some extent time consuming task during startup In order to support and simplify this as signment the Solarcheck communication module features a simple locate function By set ting a time value in a special register the respective communication module is immediately placed in locate mode It remains in this operating state until the specified time has elapsed or the module is restarted manually This state is also exited by manually set
82. he affected module or measuring modules connected to it were switched off by the en ergy saving function Measures 1 If shutdown was not planned check the source text of your program and remove the setting for the energy saving function see Section 8 1 on page 67 After disabling the energy saving function test the function of the affected module If it remains switched off and the register entry is set to 0 an error is present Send in the device PHOENIX CONTACT 77 Solarcheck family Table 10 6 Scenario 5 SCK C MODBUS Device error description Status register LED indicator SCK C MODBUS 2901674 There is no data from the communication module and the connected measuring modules No entry POWER LED flashing 2 8 Hz Cause An internal error has occurred Measures 1 Replace the communication module Table 10 7 Scenario 6 SCK C MODBUS Device error description Status register LED indicator SCK C MODBUS 2901674 Data is regularly unavailable or is out of date No entry POWER LED permanently ON Cause The SCK internal cycle time is longer than the retrieval interval at the controller Measures 1 Setaretrieval interval 2 s at the controller 2 Faulty data can extend the internal cycle time Check the data quality as described for Scenario 3 in Table 10 4 on page 77 78 PHOENIX CONTACT
83. housing with at least IP54 protection according to EN 60529 The stated limits concerning mechanical or thermal loads on the module must not be exceeded 105608 en 00 PHOENIX CONTACT 43 Solarcheck family 6 4 Cabling The Solarcheck devices have been designed and tested according to IEC 61010 and cor responding references to EMI behavior As long as the installation instructions are followed they will withstand the specified influences 6 4 1 Installation instructions In general you should keep a sufficient distance between the power and data cables in order to avoid interference from the generator Furthermore make sure that the data cables are shielded properly and that the shield is connected correctly Installing the data cables and power cables in separate cable ducts is therefore the best and recommended form of installation Figure 6 1 Distances between data and power cables Option a installation of data D and power P cables at distance s Option b installation of data D and power P cables in separately grounded cable ducts 44 PHOENIX CONTACT 105608 en 00 Installation Onthe basis ofthe aforementioned DIN EN 50174 standard let us take here as an example a calculation of the required distances between data and power cables at defined power levels and interference frequencies of 50 Hz The interference frequencies in a PV field can differ significantly and exert a
84. indicated as such PHOENIX CONTACT Table of contents MEN riorem 1 1 Product 1 2 Area or application 5 o 1 3 General safety NOtes ii 2 General notes on PV systems 2 1 Typical structure of large PV systems and PV power stations 2 2 Data collection in large PV systems 3 Solarcheck string current measurement with SCK M I 3 1 Safety notes for the device 3 2 Function uc D n E Ea 3 2 1 Current measurement 3 2 2 Digital Input ener 3 2 3 Analog INPUT eI AID AURA 3 2 4 Internal temperature measurement 3 3 Data acquisition and transfer i 3 4 Powersupply atlanta buste t m bee seb eyf 3 5 datas noB poma dedo 4 Solarcheck string voltage measurement with the SCK M U 1500V 4 1 Function cocer rette eT e AUD Wee e dece 4 1 1 Voltage measurement 4 1 2 Note on the parallel connection of multiple voltage measuring devices in a system 4 2 Data acquisition and 5 4 2 1 Representation of voltage values at the ana
85. l SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel SCK channe SCK channel 17 PD47 17 MIO 17 MIT 17 MI2 17 17 4 7 5 17 MI6 7 MI7 17 MI8 7 MI9 17 MI10 7 MI11 17 MI12 7 MI13 17 MI14 17 MI15 17 MI16 7 MI17 17 MI18 7 MI19 17 MI20 7 MI21 17 MI22 7 MI23 17 MI24 7 MI25 17 MI26 7 MI27 17 28 7 29 17 7 MI31 17 2 7 17 MI34 7 5 17 MI36 7 MI37 17 MI38 105608 en 00 PHOENIX CONTACT 105 Solarcheck family Table A 12 Range 8 SCK channel 7 Modbus address 0380h 03E0h Modbus Access Designation Modbus Access Designation address address HEX HEX 03A8 Read only SCK channel 7 PD39 03D8 Read only SCK channel 7 MI39 03A9 Read only SCK channel 7 PD40 03D9 Read only SCK channel 7 MI40 03AA Read only SCK channel 7 PD41 03DA Read only SCK channel 7 MI41 Read only SCK channel 7 PD42 03DB Read only SCK channel 7 42 03AC Read only SCK channel 7 PD43 03DC Read only SCK channel 7 Ml43 03AD Read only SCK channel 7 PD44 03DD Read only SCK channel 7 MI44 Read only SCK channel 7 PD45 03DE Read only SCK channel 7 MI45 Read only SCK channel 7 PD46 03DF Read only SCK channel 7 MI46 03E0 Read only SCK channel 7 MI47 A 1 10 Address area range
86. le an additional power supply is not required for the device Alternatively the voltage measuring device can also be used outside of the Solarcheck de vice range In this case the power supply must be implemented separately and connected directly to the supply input To do this proceed as described in Installing the SCK M U 1500V voltage measuring module on page 57 105608_en_00 PHOENIX CONTACT 29 Solarcheck family 4 4 Technical data Voltage measurement Supply Supply voltage Typical internal power consumption Maximum internal power consumption Measuring inputs Voltage measuring range Maximum transmission error from measuring range final value Temperature coefficient from T gt 25 C Number of measuring channels Connection method Minimum terminal block distance Surge voltage Analog output Output voltage range Cable length for 0 15 mm Cable type General data Degree of protection Ambient temperature range operation Ambient temperature range storage Dimensions W H D Screw connection solid stranded AWG Tightening torque Humidity at 25 C no condensation Altitude Installation on DIN rail Pollution degree Conformance approvals Conformance Referenced standard SCK M U 1500V Order No 2903591 24 V DC 10 8mA 65 mA 25 or via SCK M I 8S 20A 0 1500 V DC 1 after additional adjustment valid for 100 1500 V DC 0 01 1 Screw connection
87. llel connection PV field String combiner box Inverter station RAE D lt p peule i d jim Measuring device Measuring device Communication device Compact controller for string current for voltage to connect up to 8 measuring devices Figure 9 2 SCK C MODBUS in the inverter station current measuring module with voltage measurement in the string combiner box 72 PHOENIX CONTACT 105608 en 00 Installation examples 9 3 Example 3 SCK C MODBUS installed centrally in the inverter station Solarcheck current mea suring module s installed in the string combiner box in the PV field Higher level voltage measurement for each system segment As already indicated under Example 2 the typical parallel connection of strings in large PV Systems means that the voltage in a system segment is usually the same This means that voltage data can be acquired very effectively and economically Voltage measurement via the SCK M U 1500V voltage measuring module can also be used outside of the Solarcheck device topology In this case the device is used as a simple analog device in the string combiner boxes In this scenario the power supply and data connection for the device must be implemented separately This method of use is very inexpensive as only one voltage measuring module is required per system segment String combiner box Inverter s
88. log output 4 2 2 Step response time i 4 3 Power SUpply ide Re EE Rs n ERO YY YR 4 4 Technical data ee rure eta o ie Hi eri o ath 5 SCK C MODBUS Solarcheck communication module 5 1 FUNCTION 5 2 Data acquisition and transfer i 5 2 1 SCK internal communication cycle 5 2 2 RS 485 communication esses 5 2 3 Register addresses i 5 3 Power Supply acc deu ddod ue elia 5 4 Technical dala ie ili far LI 105608 00 Solarcheck family 6 s e xd asd ae Li Mt 39 6 1 Connection description i 39 6 2 Measuring category and notes on insulation 43 6 3 Cabinet nee iL eee oe Eee Fer eee ELE Hee 43 6 4 M 44 6 4 1 Installation instructions 44 6 4 2 Material requirements essem 48 6 4 3 Cable lengths and conductor cross sections 48 6 5 Installing the SCK C MODBUS communication module 49 6 5 1 Addressing the SCK C MODBUS communication module
89. lty see item 1 Or b Internal components have been damaged In this case replace the communi cation module 76 PHOENIX CONTACT 105608 en 00 Troubleshooting Table 10 4 Scenario 3 SCK C MODBUS Device Status register LED indicator error description SCK C MODBUS 2901674 Entry 1 in bit 6 of the POWER LED There is no data or incorrect data from 00 bcn 1 4 Hz one or more connected measuring ca Tx LED lights up spo modules radically Cause Data transmission to the affected measuring module is faulty Measures 1 Check the shielding and installation of the affected SCK bus data cable see Section 2 2 on page 15 and 6 4 on page 44 2 Remove any interference couplings 3 After removing the error cause test the function of the affected device 4 Ifthe message is still present a The connection is still faulty or disrupted see item 1 Or b Internal components have been damaged In this case replace the communi cation module 5 Forcloser examination of the data quality it is recommended that you record the sig nals on the SCK BUS cable using an oscilloscope Table 10 5 Scenario 4 SCK C MODBUS Device Status register LED indicator error description nected measuring modules SCK C MODBUS 2901674 Entry 1 in bit 7 ofthe POWER LED _ low byte permanently ON There is no data from one or more con 1000 0000 Cause T
90. mation please refer to SCK internal communication cycle on page 33 3 2 3 Analog input The analog input is designed for analog 0 10 V standard signals Incoming O 10 V sig nals are stored as a 16 digit INT value Using the analog connection for devices in the Solarcheck device range The 2 10 V analog output of the voltage measuring module can be connected to the an alog 0 10 V input of the 8 channel current measuring module Use of this function is op tional Due to the live zero point of the output cable break detection is integrated automati cally live zero Output P OUT is designed specifically for connection of the SCK M U 1500V voltage measuring module Order No 2903591 The maximum distance between current and voltage measuring modules is 0 5 m The value range is defined as 2000 12000 for 2 12 V For further details on voltage measurement refer to Section 5 2 20 PHOENIX CONTACT 105608 en 00 Solarcheck string current measurement with SCK M I Using the analog connection for analog devices that are not part of the Solarcheck device range The data cable of any analog module with 0 10 V 0 5Vor2 10 V standard signals can be connected to the 10 V input of the measuring module Please note that 0 10V and O 5 V signals do not support the live zero function The supply output of the SCK M I 8S 20A is specifically tailored to the performance char acte
91. mm 0 2 2 5 0 2 2 5 24 12 0 5 0 6 9596 2000 35 mm DIN EN 50022 2 2 CE compliant Conformance with EMC Directive 2004 108 EC and Low Volt age Directive 2006 95 EC EN 61010 01 2011 7 105608 en 00 PHOENIX CONTACT 23 Solarcheck family 24 PHOENIX CONTACT 105608 en 00 Solarcheck string voltage measurement with the SCK M U 1500V 4 Solarcheck string voltage measurement with the SCK M U 1500V 4 1 Function The Solarcheck voltage measuring module is used to measure PV voltages up to 1500 V DC Voltage measurement can be performed in isolated systems as well as systems grounded on the positive or negative side The analog output of the device maps the measured system voltage as a 2 10 V signal The module is usually connected to the corresponding 8 channel current measuring module SCK M I 8S 20A Order No 2903241 As an option the voltage measuring module can also be operated as a simple analog mea suring device outside of the Solarcheck device range Observe the installation instructions in Installing the SCK M U 1500V voltage measuring module on page 57 4 1 1 Voltage measurement The voltage is measured via two impedance chains one of which measures the voltage of to PE and the other the voltage of to PE Both measured values are first determined in dividually and are then added This gives the system voltage value This value is then output asa2 10
92. mmunication module on page 49 Table 5 1 Modbus settings Protocol Modbus RTU Valid addresses 1 247 Default setting O invalid address must be changed Baud rate Default setting 9600 bps Parity Default setting none Stop bits Default setting 1 Code 8 bit binary Function code Function for reading the SCK MODBUS measured values All mea sured values are stored in a 16 bit word The module address is set to 0 by default and must be changed Communication is not possible when the address is set to 0 For additional information on setting the module ad dress please refer to Addressing the SCK C MODBUS communication module on page 49 Assign appropriate addresses in the 1 247 address area according to your system con figuration By default the address area from 248 255 is assigned to non stationary de vices and cannot be used 105608 en 00 PHOENIX CONTACT 33 Solarcheck family You must design the Modbus data request for the communication module according to the following schematic Client Function Start Total number of CRC address code register registers Cyclic Redundancy Check 03 03 04B1 0015 D4FO Client No Read holding 1201 21 Resulting 3 register checksum Response 03 03 xx xx xx address function code data CRC Example data record Request for module information data from module No 3 Tx
93. module is incorrect Cause The value is outside the valid voltage range of the module Measures 1 Make sure that the value does not go outside the valid voltage range of the device see Section 4 1 1 on page 25 80 PHOENIX CONTACT 105608 en 00 Troubleshooting Table 10 12 Scenario 11 SCK M I 8S 20A other analog device Device Status register LED indicator error description SCK M I 8S 20A 2903241 No entry POWER LED other analog device ON Data from the connected analog device is incor rect Cause The analog device is not electrically isolated from the power supply of the Solarcheck communication module This affects the voltage value at the analog input of the SCK M I 8S 20A Measures 1 Make sure that the supply for the analog device and the Solarcheck communication module are electrically isolated For example use a separate power supply for the analog device Table 10 13 Scenario 12 SCK M U 1500V Device Status register LED indicator error description SCK M U 1500V 2903591 No entry POWER LED There is a voltage between O 2 V at the analog QN input of the SCK M I 8S 20A or the controller Cause A cable break has occurred or there is a faulty connection between the SCK M U 1500V and the SCK M I 8S 20A or controller This error can be detected with the live zero sig nal Measures 1 Checkthe connectio
94. munication cable a particularly efficient and inexpensive design for the power supply of the overall Solarcheck system is possible PV field String combiner box Inverter station Measuring device Communication device Compact controller for string current to connect up to 8 measuring devices Figure 9 1 SCK C MODBUS in the inverter station current measuring module without voltage measurement in the string combiner box 105608 en 00 PHOENIX CONTACT 71 Solarcheck family 9 2 Example 2 SCK C MODBUS installed centrally in the inverter station Solarcheck current mea suring module s and voltage measuring modules installed in the string combiner box in the PV field If the voltage is to be acquired at string level positioning the voltage measuring module in the string combiner box is advised In this case the analog input of the SCK M I 8S 20A current measuring module which is specifically designed for this purpose can be used for the power supply and data connection of the SCK M U 1500V voltage measuring module A separate power supply for voltage measurement does not have to be provided here ei ther Likewise the voltage data is available via the Solarcheck protocol Of course itis possible to equip one or just a few string combiner boxes with additional volt age measurement in each system segment because the string voltage in the system seg ment is usually the same everywhere due to the para
95. n Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on Read on 5 ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly y ly Designation SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channe SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel SCK channel 3 status 13 PDO 3PD1 13 PD2 3 PD3 13 PD4 PD5 13 PD6 PD7 13 PD8 3 PD9 13 PD10 3PD11 13 PD12 3 PD13 I3 PD14 3 PD15 13 PD16 3PD17 13 PD18 3 PD19 13 PD20 3 PD21 13 PD22 3 PD23 13 PD24 3 PD25 13 PD26 3 PD27 PD28 3 PD29 13 PD30 3 PD31 13 PD32 3 PD33 13 PD34 3 PD35 13 PD36 3 PD37 13 PD38 Modbus address HEX 01BO 01B1 01B2 01B3 01B4 01B5 01B6 01B7 01B8 01B9 01BA 01BB 01BC 01BD 01BE 01BF 01CO 01C
96. n between the devices and remove the error 105608 en 00 PHOENIX CONTACT 81 Solarcheck family 10 2 Additional notes n photovoltaic systems the installation and surrounding area can influence the data technology in various ways Effective error localization is usually inexpensive and more effective than simply replacing devices Error causes must be removed reliably and permanently so as to ensure the added value achieved by monitoring your operating data for the long term as well Fortroubleshooting it is recommended that you disconnect the affected modules from the rest of the system and test the replacement modules as they are incorporated in the system Successive testing should always be carried out to isolate errors and their lo cation When carrying out troubleshooting always perform before after comparisons Inthe case of troubleshooting on the RS 485 side of the device other baud rates can also be set for test purposes Table 10 14 Baud rates DIP8 DIP7 DIP6 DIP4 DIP3 DIP2 DIP1 Baud rate Parity No of Not Stop Parity Acti Baud stop used bit mode vate rate bits parity 9600 X X X X 0 0 0 0 14400 X X X X 0 0 0 1 19200 X X X X 0 0 1 0 38400 X X X X 0 0 1 1 57600 X X X X 0 1 0 0 76800 X X X X 0 1 0 1 115200 X X X X 0 1 1 0 230400 X X X X 0 1 1 1 75 X X X X 1 0 0 0 150 X X X X 1 0 0 1 300 X X X X 1 0 1 0 600 X X X X 1 0 1 1 1200 X X X
97. nection of multiple voltage measuring devices in a system Due to the circuit architecture in the device the voltage measuring input is connected to ground via the internal impedances Resistance Rx is 20 MO respectively If multiple volt age measuring devices are connected to the same generator in parallel these impedances are also connected in parallel This results in overall reduced impedance of the generator to ground This can affect the response of any ground fault detection in the system The impedances of the voltage measuring devices used within a generator per inverter in put therefore have to be taken into consideration when defining the threshold values for ground fault detection The following impedances result depending on the number of voltage measurements con nected in parallel in a system Table 4 3 Impedances Number of parallel Individual impedance Total impedance voltage measurements 5 PE 1 20 MQ 20 MO 2 20 MO 10MO 4 20 MO 5MO 8 20 MO 2 5MO 16 20 MO 1 25MO 32 20 MQ 0 625 MO 64 20 MQ 0 313 MO 128 20 MO 0 156 MO 105608 en 00 PHOENIX CONTACT 27 Solarcheck family 4 2 Data acquisition and transfer The analog output of the voltage measuring module can be connected directly to the 10 V input of the corresponding SCK M I 8S 20A Solarcheck current measuring mod ule The measured values are then available via the SCK C MODBUS Solarcheck
98. not supplied via the Solarcheck devices it is supplied separately for further details on the design refer to Design of a separate power supply for the SCK M U 1500V voltage measuring module on page 63 Use twisted and shielded cables for all signal and supply cables to avoid electromagnetic interference from the PV generator e g via the string or bus cables Ground the shield 6 7 4 Connecting voltage measurement To connect voltage measurement use suitable cables with appropriate insulation for your system voltage double or reinforced insulation The installation and connection of cables must be short circuit proof and ground fault proof Tap the voltage at suitable points in the string combiner box in parallel and connect the negative and positive poles to the corresponding connection terminal blocks Voltage measurement can be used in PV systems grounded on the positive or negative side as well as in ungrounded PV systems with voltages up to 1500 V DC The specified measuring accuracy applies for the 100 1500 V DC measuring range Snap the device onto a 35 mm DIN rail according to DIN EN 50022 in the control cabinet 60 PHOENIX CONTACT 105608 en 00 Installation 6 8 Power supply for the Solarcheck devices NOTE D Only use power supply units with safe isolation and SELV PELV according to EN 50178 VDE 0160 SELV PELV Use shielded twisted pair cables for the supply cable Ground the 24 V supply
99. ram of generator with transformerless inverter Filter H Bridge Filter RA lio ls mal 809 is PV PE 17 4 F EIL Figure 2 7 Example diagram of generator with transformerless inverter The individual strings of a PV generator particularly in large systems with central inverters are connected in so called string combiner boxes In these string combiner boxes multiple PV strings are connected together in parallel and appropriate protective devices and moni toring devices are provided When creating your PV system observe the necessary standards for planning and installing PV systems such as IEC 60364 7 712 together with corresponding references and equiv alent standards 14 PHOENIX CONTACT 105608 en 00 General notes on PV systems 2 2 Data collection in large PV systems Data Storage Internet Remote Visu Weather Station Signal conditioning PLC Function Local Visu Inverter Station m StringBox ES PV Plant Main cabinet Infrastructure Energy Data Figure 2 8 Data collection in large PV systems Data collection in large extensive PV systems presents a challenge with regard to the net work technology On the one hand the reliable assignment of data and data security must be implemented well on the other hand the hard
100. ristics of the SCK M U 1500V Power supply to other devices is therefore not supported or only supported to a limited extent and usually has to be implemented separately When designing this separate power supply observe the relevant reguirements from the data sheet of the module to be connected Also observe the input resistance of the analog input 200 kO if you want to connect analog devices that are not part of the Solarcheck device range Make sure that the connected analog device is electrically isolated from the supply of the remaining Solarcheck devices Otherwise invalid values may occur on the analog input side 3 2 4 Internal temperature measurement The internal device controller is eguipped for temperature measurement This means that the device temperature inside the module can be monitored The device is designed for op eration under temperature conditions ranging from 20 C 70 C From experience de pending on the ambient conditions ventilation situation etc the temperatures inside the device are approximately 10 C above the temperature outside the device To that effect normal device operation is ensured if the temperatures measured inside indi cate lt 80 C If the temperature inside the device exceeds 809C this may affect the function electronics and service life of the device 3 3 Data acguisition and transfer The acquired data is transferred to the SCK C MODBUS Solarcheck communication mod ule via an
101. separate sensor This means that all connected strings can be measured independently of one another Figure 3 1 Channels for current measurement feed through direction The channel assignment is printed on the side of the housing Figure 3 2 Assignment of the current measuring channels Hall sensor measuring technology The cable feed throughs in the device are surrounded by magnetic cores which absorb and concentrate the magnetic field of the live conductor A Hall sensor positioned in an air gap in the magnetic core generates a voltage signal proportional to the strength of the magnetic field This voltage signal can then be used directly to determine the current strength Since the current direction also determines the direction of the magnetic field this measuring tech nology can also be used to indicate the current direction As a result reverse current detec tion is integrated in the Solarcheck current measuring devices 18 PHOENIX CONTACT 105608 en 00 Solarcheck string current measurement with SCK M I Value ranges Reverse currents of up to 1 A can be measured Positive and negative current values are stored in a signed register The values can be interpreted and a corresponding alarm func tion can be activated via a higher level controller Values outside the measuring range from 1 A to 20 A are not accurate enough Values outside the overcurrent range from 1 5 A to 25 A are removed from the register
102. stallation 6 7 Installing the SCK M U 1500V voltage measuring module D NOTE Risk of damage to equipment Maintain the specified distance between the voltage measuring input and other conduc tive parts in the vicinity This safety distance must be observed in order to avoid electrical sparkovers Y Y A 32 AA SOS VOLTAGE INPUT MAX 15007 DC Al A Figure 6 10 Mounting distances WARNING Risk of electric shock Do not install voltage measurement while the system is in operation High voltages may be present in parts of the system even in diffuse daylight Observe all statutory require ments for live working 1500 V DC Figure 6 11 High voltage measurement connection The module is usually connected to the corresponding 8 channel current measuring module SCK M I 8S 20A Order No 2903241 105608 en 00 PHOENIX CONTACT 57 Solarcheck family As an option the voltage measuring module can also be operated as a simple analog mea suring device outside of the Solarcheck device range Two options are described below Do not open or modify the device Snap the device onto a 35 mm DIN rail according to EN 50022 in the control cabinet 6 7 1 PE connection Install the PE connection first For PE connection use suitable copper cables with a diam eter of at least 2 5 mm 14 AWG
103. suring module without voltage measurement in the string combiner box 74 PHOENIX CONTACT 105608 en 00 Troubleshooting 10 Troubleshooting In the event of errors or malfunction during startup or operation this table can be used to perform initial diagnostics locally and to possibly even remove the error cause directly If troubleshooting using this table is not possible please contact your Phoenix Contact repre sentative Error states can be read on the device via the LED indicators or by reading the status reg isters P Power green Internal error connection error Communication error Internal error Sending data No communication Rx Receive data green Receiving data No communication Figure 10 1 LED indicators Table 10 1 Structure of the status register High byte Low byte 7 6 7 6 5 4 10 0 O DIS ER 0 Short name Meaning 4 CC Short circuit 5 NC Not connected no module connected 6 ER Error communication error 7 DIS Disabled channel disabled 105608 en 00 PHOENIX CONTACT 75 Solarcheck family 10 1 Diagnostics and error removal Table 10 2 Scenario 1 SCK C MODBUS Device Status register LED indicator error description SCK C MODBUS 2901674 Entry 1 in bit 4 of the low POWER
104. t positive pole The diagram also clearly shows that using transformerless inverters can mean that the total PV generator potential oscillates to ground even though the generator voltage itself sup plies a DC voltage In the case of transformerless inverters it should also be noted that there is no electrical iso lation to ground here This is particularly important if devices are incorporated in the system which are only intended for IT systems i e they have no ground connection Example diagram of generator with transformer inverter MM i Filter H Bridge Filter lac LE 50 Hz Figure 2 4 Example diagram of generator with transformer inverter 12 PHOENIX CONTACT 105608_en_00 General notes on PV systems Example diagram of generator with transformer inverter and grounding on the pos itive side LLIITI Figure 2 5 Example diagram of generator with transformer inverter and grounding on the positive side Example diagram of generator with transformer inverter and grounding on the neg ative side 1 J Figure 2 6 Example diagram of generator with transformer inverter and grounding on the negative side 105608 en 00 PHOENIX CONTACT 13 Solarcheck family Example diag
105. tation Compact controller Measuring device Communication device for string current to connect up to 8 measuring devices Measuring device for voltage Power Suppley Figure 9 3 SCK C MODBUS in the inverter station current measuring module in the string combiner box SCK M U 1500V at higher level 105608_en_00 PHOENIX CONTACT 73 Solarcheck family 9 4 Example 4 SCK C MODBUS installed in the communication box Solarcheck current measur ing module s installed in the string combiner box in the PV field Due to the system design a distributed arrangement of the communication modules in a system may also be worthwhile The use of a communication box is recommended here so thatthe power supply and any other communication units controller wireless modules RS 485 Ethernet converter etc can be housed in this communication box This arrangement also makes good use of the modularity of the Solarcheck system The arrangement can of course also be combined with the other examples listed e g to also incorporate voltage measurement String combiner box String combiner box Inverter station Central control room 1 1 1 Z Measuring device Communication device Compact controller for string current to connect up to 8 measuring devices Com box Figure 9 4 SCK C MODBUS in separate communication box current mea
106. ting the time value to 0 The communication module can indicate locate mode by flashing all existing LEDs at a uniform frequency of 0 7 Hz This behavior clearly distinguishes the module from other communication modules regardless of which operating state they are in Because lo cate mode is activated via the controller this allows the programmed module ID to be clearly assigned to the actual device The communication mode is still active while the modules are in locate mode so measured data is not lost during this time The connected measuring modules likewise continue oper ating normally Example The time entry is set in register 04AFh of the corresponding module The value is stored in the register as USIGN16 The minimum value is 5 s 5 decimal and the maximum value is 18 2 hrs 65535 decimal ID1 ID2 ID3 NASO IS QQG NADA SSSSS SS 9 OSes T2 mi T2 T4 SS T2 T1 T4 T3 ANZ MS XM POWER wv iae anos Ux z g E amp Um 3 o POWER TOWER s20v zev ono ari 24v zavlanoslonoy it Um z E 5 RX a U 2 T SCK C MODBUS Q Order No 2901674 Pi 5 E325
107. ure 6 16 Performance characteristics of the communication module SCK C MOD measuring modules SCK M U 1500V BUS with connected measuring modules SCK M I including voltage The typical values for current consumption apply if the input voltage is in the required range of 24 V DC If the input voltage drops current consumption may increase up to the specified maximum value Any further deviation results in device shutdown Example 1 x SCK C MODBUS with 8 connected SCK M I 8S 20A modules each of which includes voltage measurement via SCK M U 1500V Table 6 12 Current consumption Module Typical at 24 V Maximum SCK C MODBUS 22 mA 45 mA SCK M I 8S 20A 43 mA 50 SCK M U 1500V 8 65 mA 22 MA 8 x 43 mA 8 mA 430 mA With safety factor 3 1290 mA 62 PHOENIX CONTACT 105608 en 00 Installation 6 8 2 Design of a separate power supply for the SCK M U 1500V voltage measuring module The voltage measuring module can also be used as a simple analog measuring transducer outside of the Solarcheck device range In this case power is not supplied via the connec tion to the SCK M I 8S 20A Solarcheck current measuring module it must be supplied sep arately instead A 24 V DC power supply must be provided The typical current consumption is 8 mA The maximum current consumption is 65 mA The maximum current consumption only occurs if the value falls significantly below the minimum input
108. us 0038 SCK channel 6 1 100 A current 1 0039 SCK channel 6 Ix100 A current 2 003A SCK channel 6 1x100 A current 3 003B SCK channel 6 Ix100 A current 4 003C SCK channel 6 1 100 A current 5 003D SCK channel 6 Ix100 A current 6 003E SCK channel 6 1 100 A current 7 003F SCK channel 6 Ix100 A current 8 0040 SCK channel 6 C temp 0041 SCK channel 6 IV voltage 0042 SCK channel 7 Bit mask status 0043 SCK channel 7 Ix100 current 1 0044 SCK channel 7 1 100 A current 2 0045 SCK channel 7 Ix100 current 3 0046 SCK channel 7 1 100 A current 4 0047 SCK channel 7 Ix100 A current 5 86 PHOENIX CONTACT 105608 en 00 Register tables Table A 1 Modbus address HEX 0018 0019 001A 001B 001C 001D 001E 001F 0020 0021 0022 0023 0024 0025 0026 0027 0028 0029 002A 002B 002C 002D 002E 002F Illustration of the register table for reading 2901672 Modbus address Name SCK channel 3 current 2 SCK channel 3 current 3 SCK channel 3 current 4 SCK channel 3 current 5 SCK channel 3 current 6 SCK channel 3 current 7 SCK channel 3 current 8 SCK channel 3 temp SCK channel voltage SCK channel 4 status SCK channel 4 current 1 SCK channel 4 current 2 SCK channel 4 current 3 SCK channel 4 current 4 SCK channel 4 current 5 SCK channel 4 current 6 SCK channel 4 current 7 SCK channel 4 current 8 SCK channel 4 t
109. us indicator TX transmit data 8 Green LED status diagnostics indicator P power supply error diagnostics Block diagram zz uc Bus COM on 100 gt O L _ 10 4 20 3 O 8x I IN 6 O 704 8O ___ 40 PHOENIX CONTACT 105608_en_00 Installation SCK M I 4S 20A Order No 2903242 1 Through connections for current mea surement 1 4 max 20 A per connec tion 2 Snap on foot for DIN rail mounting 3 Connection terminal blocks for digital switch contact D IN 4 Connection terminal blocks for commu nication cable SCK BUS 5 Green LED status indicator TX transmit data 6 Green LED status diagnostics indicator P power supply error diagnostics Block diagram om SCK um Erw uc Ss our 0 105608 00 41 Solarcheck family SCK M U 1500V Order No 2903591 Connection for PV system voltage Snap on foot for DIN rail mounting PE grounding terminal blocks Connection terminal blocks for 24 V O V power supply 5 Connection terminal blocks for analog voltage output 2 10 V OUT F O 0V F O24V Important installation instructions m m m rcr VK 7 p 72 SOSA Y Ale VOLTAGE vov DE 7 Al N 1500
110. used for data transfer between the measuring modules and the communication module At the same time the communication cable is also used to supply power to the measuring modules in the field The data is made available to the higher level control unit via an RS 485 interface using Modbus RTU 105608_en_00 PHOENIX CONTACT 31 Solarcheck family Itis imperative thatthe data from the measuring modules is retrieved via the communication module Operation without a communication module is only supported for the SCK M U 1500V Data cables Solar cables Measuring module for current 4 strings Compact controller Measuring module for current 8 strings PV field Data cable 7 Measuring module for current 8 strings Communication module for up to 8 measuring modules Modbus Measurement and control technology Measuring module for voltage Figure 5 2 Structure of the Solarcheck communication network 1 Request signal to Response of SOLARCHECK SOLARCHECK communication device measuring devices 3 Storage of measuring data in registers Request signal to SOLARCHECK communication device 2 Response from SOLARCHECK measuring devices measuring data Compact controller Figure 5 3 Schematic diagram of Solarcheck communication 105608 en 00 32
111. ve an analog interface for con necting a Solarcheck voltage measuring device 3 1 Safety notes for the device e Do not open or modify the device Do not repair the device yourself replace it with an equivalent device Repairs may only be performed by the manufacturer The manufac turer is not liable for damage resulting from noncompliance e The termination area must be covered after installation to ensure sufficient protection against accidental contact with live parts e g installation in a distributor box or control cabinet 3 2 Function Table 3 1 Function matrix for current measuring modules 4 9 N N o S o o o On x 7 5 50 5 S o 5 25 t 5 5 25 im o gt M E 5 o e ec oo 5 5 5 10 jog 2o 9o Vo Vo cc c 0 55 o coa coa o emos 0 5 2 C5 e5 o5 S835 Lo 3 15 En o x Lo gt oS 3x 9 e oo p 2 eo le lz 2 lels ot 4E A 0 SCK M x X X X x I 8S 20A SCK M X X x l 4S 20A 105608_en_00 PHOENIX CONTACT 17 Solarcheck family 3 2 1 Current measurement Hall sensors are used for contact free current measurement For measurement purposes the PV string cables are led through the holes in the module in the specified direction Each channel is equipped with a
112. ware design needs to be inexpensive and straightforward This is particularly relevant in the special electrical environment of a PV power station Although the PV generator generates a direct current in principle the inverters in the system likewise have an impact on the power cables This means that in a PV system the inverter s method of operation generates AC voltage components on the DC side This may lead to inductive interference of cables and devices in the proximity of the generator s DC cabling Depending on the inverter type and connection the effect of these AC voltage components can vary In order to avoid any influence on signals and data cables corresponding standards regard ing the installation of data cables in the vicinity of power cables must be observed Standard DIN EN 50174 provides comprehensive guidelines on planning and installing communica tion cables in the vicinity of power cables 105608 en 00 PHOENIX CONTACT 15 Solarcheck family 16 PHOENIX CONTACT 105608 en 00 Solarcheck string current measurement with SCK M I 3 Solarcheck string current measurement with SCK M I Various device versions are available for string current measurement The device designa tion indicates the number of current measuring channels and their measuring range final value Hall sensors are used for contact free current measurement The devices also have a digital input internal temperature indication and some ha
113. working 10 PHOENIX CONTACT 105608 en 00 General notes on PV systems 2 General notes on PV systems 2 1 Typical structure of large PV systems and PV power stations PV generator with central inverter LIII Figure 2 1 PV generator with central inverter Generator with string inverters AT re ze Figure 2 2 Generator with string inverters Inverters with and without an internal transformer are used in PV systems This results in various electrical characteristics which must be considered with regard to the design of the system cabling the use of other devices and the grounding concept Inverters with transformers for example can be arranged without grounding as well as with grounding on the negative or positive side 105608 en 00 PHOENIX CONTACT 11 Solarcheck family As illustrated the example below this results in the following possible voltage levels in the system 1000 800 600 400 200 0 200 iH 400 600 F _ 9 4 800 Figure 2 3 Voltage ratio with and without transformer 1 Transformerless inverter 2a Inverter with transformer without grounding 2b Inverter with transformer with grounding at negative pole 2c Inverter with transformer with grounding a
114. ximum internal power consumption Measuring inputs Current measuring range Maximum transmission error from measuring range final value Temperature coefficient Reverse current detection Number of measuring channels Overload capacity Connection method Digital input Controlled by external floating contact Cable length Analog input Input voltage range Analog output Output voltage range Cable length for 0 15 mm Cable type Data interface for SCK C MODBUS Cable length for 0 15 mm Cable length for 1 5 mm Cable type Communication protocol SCK M I 8S 20A SCK M I 4S 20A 2903241 2903242 Via SCK C MODBUS 43 mA 50 mA 0 20ADC 1 0 02 1 0ADC 8 4 5 9 5 mm through connection Yes 30m 0 10V 24 V supply for 2903591 0 5 m maximum Twisted shielded 300m 500m Twisted shielded Proprietary 22 PHOENIX CONTACT 105608 en 00 Solarcheck string current measurement with SCK M I Current measurement General data Degree of protection Ambient temperature range operation Ambient temperature range storage Dimensions H D Screw connection solid stranded AWG Tightening torque Humidity at 25 C no condensation Altitude Installation on DIN rail Pollution degree Conformance approvals Conformance Referenced standard SCK M I 8S 20A 5 1 45 20 2903241 2903242 IP20 20 C 70 C 40 C 85 22 5 102 128 5

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