TM168DEVCM User Manual
Contents
1. 25 Page 2 TM168DEVCM USER MANUAL 1 Generalities TM168DEVCM is a stand alone driver for electronic expansion valves The instrument has 1 measurement input for pressure transducers 4 20 mA evaporation probe 1 measurement input for NTC probes intake probe 1 high voltage digital input functioning consent 2 low voltage digital inputs functioning consent and state of the back up battery charge 1 power supply input coming from back up battery 1 digital output relay 5 A 250 VDC for alarm output control 1 serial port with MODBUS communication protocol The device can function only with the Alco Control valves belonging to the EXM EXL 4 EX5 EX6 7 EX8 and EX9 ranges The device is in 4 modules DIN module The user interface is made up from a custom display with 4 digits with function icons and 4 keys set up down and escape Among the many features the following are also indicated front panel protection rating 54 management of high over heating and low over heating alarms function Maximum Operating Pressure function Lowest Operating Pressure Page 3 TM168DEVCM USER MANUAL 2 Technical features 2 1 Connections Power supply TM168DEVCM is powered by an alternating current equal to 24 V The maximum length of the power supply connection cables is 1 m The TM168DEVCM power supply is not isolated therefore it must be g2. 2 5 1 enabled 0 8 50 0 PA3I SP Low Pressure alarm 0 10 0 700 0 psi IS Low Pressure alarm 0 1 1 0 Bar FASZ hysteresis 0 3 0 1 15 0 psi 15 PA33 Pressure alarm delay 3 0 250 min IS Enable LOP Protection 0 disabled pos Alarm 9 i 5 1 enabled 0 1 15 0 41 alarm hysteresis 3 0 1 30 0 F IS 42 alarm delay 3 0 250 min IS Enable MOP Protection 0 disabled po Alarm 0 0 IS 1 enabled 0 1 15 0 51 alarm hysteresis 3 0 1 30 0 15 52 alarm delay 3 0 250 min IS DISPLAY 0 Over heating value or R 1 Evap pressure measured bar psi 2 96 valve opening Value to show on the 3 Intake temp measured PdIS display 0 0 6 IS C F 4 Saturate gas C F calculated from P 5 SP overheating value 6 SEtP selected parameters VALVE AND DRIVER ENABLING 0 Eoo an 0 0 2 2 IS 1 Yes manual functioning of the valve 2 Debug If in Manual func mode PIS set the valve output 90 9 50 15 Pr04 Enables valve forcing with 0 0 1 IS 0 No probe error 1 Yes Pr05 valve in case of probe 0 0 100 IS error Page 16 TM168DEVCM USER MANUAL Enabling mode for valve 0 From digital input From digital input Pr06 lati 0 0 3 15 DIHV ELE ON 2 From
3. if set at NO the inputs will be normally unexcited open if set at NC the inputs will be normally excited closed 6 1 Probe alarms In the case of a probe alarm module closes the valve The two parametersPr04 PrO5can be used to enable forcing of the valve manual functioning to a pre defined value in order to allow temporary functioning 6 2 Alarm relay The program has the possibility of managing an alarm relay parameter PHO1 Via the relative parameter 2 it is possible to establish the polarity NO or NC of the alarm output With PHO1 0 the relay is disabled with PHO1 1 the relay is enabled for all alarms envisioned excluding the signalling only ones with PHO1 2 the relay is enabled only for the probe errors detected by the VCM module 6 3 Alarms table Below is a list of all alarms managed by the application The order of presentation is the same as the order with which the alarms are presented when active Code Alarm description Consequence Notes ESPI Communication error with VCM controller Fixed delay ECom Communication error with main controller GENES 01 02 completely EPr1 Pressure transducer faulty or disconnected There completely EPr2 Temperature probe faulty or disconnected completely ALSm Valve step by step motor error ALHS High over heating The SH LED flashes PA20 PA21 PA22 ALLS Low over heating The SH LED
4. 0604 R W PC04 0605 R W PCOS 0606 R W PC06 0607 R W 7 50608 R W 1 50609 R W PP02 060A R W PPO3 060B R W PPO4 5060 R W PPOS 060D R W 06 5060 R W PP07 060F R W 401 50610 R W Pd02 0611 R W Pd03 0612 R W Pd04 0613 R W Page 26 TM168DEVCM USER MANUAL Pd05 0614 R W Pd06 0615 R W Pd07 0616 R W 1 0617 R W 02 0618 R W 50619 R W 061A R W PAI2 061B R W PA20 061C R W PA21 061D R W PA22 061E R W PA30 061F R W PA31 0620 R W PA32 0621 R W PA33 0622 R W PA40 0623 R W 41 0624 R W 42 50625 R W 50 0626 R W 51 0627 R W PA52 0628 R W PdIS 0629 R W Pr02 062A R W Pr03 062B R W Pr04 062C R W Pr05 062D R W Pr06 062E R W 0 5062 R W Prdl 0630 R W Prd2 0631 R W Pb01 0632 R W PHO 0633 R W Page 27 TM168DEVCM USER MANUAL PH02 0634 R W PHIO 0635 R W PHII 0636 R W PHI2 0637 R W PH20 0638 R W PH21 0639 R W PH22 063A R W PH30 063B R W PSPI 063C R W 50630 R W Mod2 063E R W Mod3 063F R W Mod4 0640 R W 5 50641 R W Mod6 0642 R W Mod7 0643 R W Mod8 0644 R W PASS 0645 R W 100 50646 R W P103 0647 R W 107 50648 R W 08 0649 R W 109 064A R W 50648 R W
5. 02 0 the manual functioning is disabled With 02 1 the manual functioning is enabled and Pr03 represents the value that the valve output must assume With 02 2 a particular manual command is enabled for inspections where the valve output assumes a trend as represented in the figure for every Prd0 100ms the valve output is increased or decreased between a value minimum Prd1 and a maximum value Prd2 Page 19 TM168DEVCM USER MANUAL valve opening 10096 Prd2 41 0 Prd0 Step rate t It is possible to operate in manual mode during normal valve functioning this allows to test the behaviour of the chiller where the valve has been inserted Errors continue to be detected during this functioning After a power cut the valve starts to function in manual mode During manual functioning by pressing the ESC key for about 2 seconds the value that the valve output must assume is displayed and set quickly Page 20 TM168DEVCM USER MANUAL 5 4 Valve state The valve can be in one of the following states visible also from relevant icons State Description Icon Display OFF Valve closed mechanical stop On stand by OFF ON START Valve in start mode On stand by PdIS valve ON Valve is keeping the valve position PdIS ON Valve opening valve position PdIS ON Valve closing valve position PdIS ON MAN Valve in manual mode maintenance PdIS OFF ALL Valve closure fo
6. R IS 40 0 40 0 PPO4 HP temperature 30 40 0 100 0 F IS 40 0 40 0 05 HP temperature 30 40 0 100 0 F IS PP06 Valve opening duration 5 1 30 IS from start up PP07 Valve opening from 50 10 100 IS start up SET3 defrost Set Point Superheat Def 6 0 5 1 0 2 n ur Ove See Set Point Low Superheat 30 0 K Pd02 Def 2 0 5 1 0 50 0 R IS SP Superheat Def High 50 0 K Pd03 ab 30 0 5 1 0 90 0 CR IS 40 0 40 0 404 temperature Def 30 40 0 100 0 F IS 40 0 40 0 405 temperature Def 30 40 0 100 0 15 Pd06 Valve opening duration 5 1 30 IS from start up aye opem 50 10 100 1 start up PROTECTIONS Note Parameters common Page 15 TM168DEVCM USER MANUAL ALARMS to the various parameters SET Enable communication 0 disabled ARE i l 18 1 standard enabled Communication alarm 30 5 200 d IS delay T Enable Low Superheat 0 disabled FAW Alarm 9 5 1 enabled Low Superheat alarm 30 0 K PRAL res ES AE 15 12 d Superheat alarm delay 3 0 250 se IS Enable High Superheat 0 disabled Alarm 1 enabled High Superheat alarm 30 0 K RE ML AE MES 5 PA22 High Superheat alarm 3 0 250 us IS delay T Enable Low Pressure 0 disabled Alarm i
7. surfing and 16 icons for immediate and intuitive representation EE RR EE ee EER EET Not TM168DEVCM 9 Main functions that can be activated using keys Key pressed Function DOWN Display version firmware revision during lamp test from power on DOWN Quantity temporary display for 2 seconds SET ENTER Display over heating set point modification for 2 seconds PH30 0 disables the possibility for modification DOWN UP Display modify reset parameters for 4 seconds UP Alarms display Page 11 TM168DEVCM USER MANUAL for 2 seconds for 2 seconds ESC Display modify valve output n manual mode for 2 seconds SET ENTER DOWN Block Release keyboard Meaning of the icons Icon Colour Function bar Green Identifies the unit of measurement selected If on it indicates that the pressure is expressed in bar psi Green Identifies the unit of measurement selected If on it indicates that the pressure is expressed in psi Pia Green Identifies the valve state closing valve closed Off the valve is closed or off or lt 5 On the valve is open at a value 95 96 Flashing the valve is working Amber If on it indicates that 90 opening of the valve is being displayed F Red Identifies the unit of measurement selected If on it indicates that the temp
8. 0 1 n IS 1 bit PASSWORD PASS Installer level password 19 99 999 n IS The following parameters are those managed by the VCM module After modification of the PIOO PIO7 and or 108 parameter the VCM module forces a reset Code Parameter description Default Min Max U M Notes 0 R22 100 Type of refrigerant 1 0 7 1 134 2 507 17 TM168DEVCM USER MANUAL 3 R404A 4 407 5 410 6 R124 7 R744 0 Standard 103 Superheat control mode 0 0 2 1 Slow 2 1 4 2 5 3 107 Type of valve 2 1 7 4 EX7 Alco 5 EX8 6 9 7 246 EXL 246 0 530 00 4 20 mA 0 7 bar relative 1 185 4 20 mA Alco PIOS Type of pressure transducer 0 0 3 0 18 bar relative evaporation probe 2 EVPT530K01 4 20 mA 0 30 bar relative 3 PT4 50S 4 20 mA Alco 0 50 bar relative 109 The following parameters however available in reading mode only at user level Code Parameter description Min Max U M Notes 1100 Evaporation pressure 5 From evaporaliod probi 1101 Evaporation temperature 50 50 2 Pressure 1102 Intake temperature 50 50 C From intake probe 1103 Superheat Value 50 50 K 104
9. Front panel protection rating 40 2 5 Technical features Connection for low voltage signals Mini Fit 16 way Power connector Phoenix disconnectable terminal board Cable section gt 0 75mm IntraBus serial port connection Phoenix disconnectable terminal board Connection for the parameters key TTL serial output for RS 485 module interface for Flash programming 6 way AMP micro maTch SPECIFICATIONS OF THE 16 W AY MINI FIT CONNECTOR SUPPLIER CONNECTOR CODE CONTACTS CODE Note use the appropriate tool for crimping FY CVILUX CP 01 116010 V2 01 1000102 AWG16 24 01 116020 VO SELECOM 6137R16WO V2 6137TR1 AWG16 20 6137TR2 AWG22 26 JUSCOM 1090 557 162 V2 1150 156 012 AWG18 22 1150 156 002 AWG22 26 CONEXCON 6740 1161 V2 6744 2000 AWG18 22 6740 1160 VO MOLEX 39 01 2160 V2 39 00 0038 AWG18 24 39 01 2165 VO 39 00 0046 AWG22 28 Page 9 TM168DEVCM USER MANUAL 2 6 Electric features Power supply Voltage 24 VDC Range 10 15 Frequency 50 60Hz Maximum power absorbed 30VA Protection fuse External Digital outputs Number 1 Electro mechanical relays Maximum contact current at 250Vdc 3 1 A Number of manoeuvre cycles 100 000 Minimum interval between switch overs 20s Type of micro switch interruption action Insulation between the
10. relay and low Reinforced voltage Valve motor outputs Number 1 Step by step motor driver Power supply Generated inside the module Digital inputs in Number 2 low voltage Type Potential free contact Current on the closing contact towards earth 2mA Maximum closure resistance 1000 Detection time from OFF to ON 100ms Detection time from ON to OFF 100ms Digital inputs in Number 1 high voltage Type Optoisolated Voltage range 230 VDC 20 Min detection time from OFF to ON 100ms Min detection time from ON to OFF 100ms Analogue inputs for Number 1 NTC probes Type NTC 10 KOhm 1 25 NTC measurement range 50 C 50 C in fluid 50 C 105 C in air Analogue inputs for Number 1 pressure transducers Type Current Current measurement range 4 20 mA Power supply 8 30 VDC Input resistance lt 200 Ohm Back up battery power supply input Voltage 12 VDC back up Type of battery lead 12 2 6 Ah Battery charger I max 150 mA V max 13 V Maximum power absorbed 30VA Protection fuse External The high voltage digital output and the digital input have reinforced insulation with respect to the remaining I O Page 10 TM168DEVCM USER MANUAL 3 User interface 3 1 Display and keyboard The built in interface on the controller is made up from a 4 digit custom display for displaying quantities 4 keys for
11. serial IntraBus 3 ModBus PrdO Step rate 10 1 200 15 Step rate ms 0 100 1 minimum opening 0 0 Prd2 15 Prd2 maximum opening 100 1 100 15 1 Back up battery 0 0 1 is 1 present VARIOUS 0 disabled 1 enabled from any alarm 1 Enable alarm relay 0 0 2 IS only forqprobes 2 Relay logic alarm 0 0 1 190 1 normally excited Sets the D11 digital input 0 Normally open NO ERO logic 0 is 1 Normally closed NC Sets the D12 digital input 0 Normally open NO logic 1 0 1 18 1 Normally closed NC Sets the DIHV digital 0 Normally open NO input logic 0 15 1 Normally closed NC PH20 Sets the pressure unit of 0 0 1 IS 0 Bar measurement 1 psi 0 unit of 0 0 1 _ IS 1 F j Note K R for over heating Sets the display of the 0 m Schneider Electric icon i 5 1 YES Disables set point 0 block function disabled PH30 modification from 0 0 1 _ IS 1 block function enabled keyboard using SET ENTER key 0 2 3 9 Khz Sets clock frequency of the 128 9 Khz PSPI SPI serial 9 3 IS 22156Khz 3217 8 Khz SERIAL NETWORK MODBUS Mod5 Board Modbus Address 1 1 247 15 0 2400 Board communication 1 4800 Baud Rate 5 a IS 2 9600 3 19200 0 Mod7 ModBus Parity 2 0 2 n IS 1 Odd 2 0 1bit StopBit ModBus 0
12. DRIVER FOR ELECTRONIC EXPANSION VALVES TM168DEVCM USER MANUAL TM168DEVCM USER MANUAL Summary 2 1 CONNECTIONS Men temas 4 2 2 TMI68DEVCM ELECTRIC CONNECTION 112 2000000000000000000000000000000000000 3 2 3 TM168DEVCM DIMENSIONS AND INSTALLATION ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee 6 2 4 GENERAT FEATURES s ese Eise ene sab es 9 2 5 TEGHNIGCAI FEATURES tese tite t Cete ttes tit eru ien tice Dee ee is 9 2 6 BPEBCTRIC FEATURES renes Wn nnde 10 3 1 DISPLAY AND 1 sese ee nette 11 3 2 ENNA tU ute ce de e tro e e Oe ee Ee iden 13 3 3 TEMPORARY DISPLAY OF THE QUANTITIES 0002000 0100000000000000000000 13 3 4 SETTING THE WORK SET POINT ees ese se ee se ee ee see ee se ee ente seen enne tte Re esse esent 13 3 5 SETTING THE CONFIGURATION PARAMETERS see ese ee ee ee es se ee ee se ee nennen net Re eese enne nennen 13 3 6 RESTORE THE DEFAULT VALUE OF THE CONFIGURATION 6 14 3 7 NEAT MENU e EE ERR erp m eed 14 3 8 DISPLAY OF FIRMWARE IDENTIFICATION ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee e
13. LICATION COMMANDS Load parameters in EV KEY 0470 W 1 store data in EV KEY CONTIGUOUS INFORMATIONS ABOUT INSTRUMENT STATUS 0 2 dil Bitl battery status Bit2 diHV Bit3 reserved Bit4 reserved Bit8 Alarm relay status Digital inputs output Suction pressure in mA 2 decimal digits Coil out temperature 1 decimal digit gt Saturation temperature from suction pressure 1 decimal digit gt Suction pressure in Bar psi decimal digit Superheat value K decimal digit Valve opening in 96 1 decimal digit Alarms Flag status 1 Flag status 2 MSB Valve status LSB x Mode configuration SEtP parameter Superheat set point VALVE STATUS off Starting Valve status running close lt 5 open 295 Page 25 TM168DEVCM USER MANUAL LOP temperature set point MOP temperature set point Set point super heat Length of valve initialization Percent opening during valve initialization Set point low superheat alarm Set point high superheat alarm the measure unit depend on parameter PH21 0 C 1 F the measure unit depend on parameter PH20 0 Bar 1 51 Description Index Access Notes Number of parameters 0600 R 81 parameters SEtP 0601 R W 1 50602 R W 2 50603 R W
14. PI11 064C R W PI12 064D R W PI13 064E R W 4 5064 R W PI15 0650 R W Kbd lock e053 R 1 keyboard locked SSE ES gt gt gt 367 Identifier A same as FF08 ff02 R Page 28 TM168DEVCM USER MANUAL Driver Identifier B same as FFO9 ff03 R Firmware ID ff08 R Firmware Variation revision ff09 R Alarms at address 0557 Alarms Mask value Low superheat 0001 High superheat 0002 LOP 0004 MOP 0008 SPI comunication 0010 error 1 battery embty or Battery status 0020 charging Low pressure 0040 1 electrical net is Electrical net status 0080 active Pressure probe 0100 failure Temperature probe 0200 failure Motor failure 0400 Regulator flags 2 at address 0558 Flag Mask value Manual function activated 99091 Enabling input 0002 status Input HV 0008 Manual function activated during 0010 probe failure Remote valve 0020 enabling 0 Off On Off status 0040 1 On VCM module compatibility Regulator flags 3 at address 0559 Flag Mask value Power failure 0001 occurred Page 29 TM168DEVCM USER MANUAL Instrument configuration varied 30002 No new info to read 0010 New info to read 0020 PAY ATTENTION ALL THE ADDRESSES NOT MENTIONED EXPRESSLY IN THIS DOCUMENT MUST BE CONSIDERED RESERVED ALL THE ADDRESSES INDICA
15. TED AS RESERVED MUST NOT BE READ OR WRITTEN IF YOU DO NOT RESPECT THIS CONDITION YOU COULD ALTER THE OPERATION OF THE INSTRUMENT Page 30
16. Valve opening percentage 0 100 value 0 correct functioning rI05 Pressure probe error 0 2 1 sensor short circuit 2 sensor open 0 correct functioning rI06 Temperature probe error 0 2 1 sensor short circuit 2 sensor open rI07 Step by step motor error 0 1 Ha f nctioniue 1 in error mode 1108 Unit alarms from VCM 0 7 Alarm bit state 112 Digital inputs state 0 2 115 VCM module revisions Page 18 TM168DEVCM USER MANUAL 5 Functioning 5 Preliminary considerations The points that qualify an electronically piloted thermostatic valve with respect to a mechanical thermostatic valve are the following compatibility with every type of refrigerant or however with many types of refrigerant very large regulation range microprocessor regulation and therefore total flexibility The first two points constitute a noteworthy advantage for the producer of machines or plants because they simplify the logistics due to the consequent reduction of the codes and material to be managed and held in the warehouse The extended regulation range also allows to guarantee excellent over heating stability also in conditions condensation pressure evaporation pressure over heating value distant from those of the project mechanical thermostatic works well around the project nominal conditions shifting from these conditions the over heating value changes and in some conditions becomes uns
17. abled by parameter 06 2 in this case it can be enabled via the Intrabus serial A typical application is a chiller heat pump that uses c pro range controllers This serial works with settings relative to fixed communication and allows the use of two valves at maximum from ModBus serial function enabled by parameter Pr06 3 Whatever the enabling mode may be there is a start up procedure that keeps the valve open at a certain percentage from parameter Px07 where x C P or d for a certain period of time that can be set from parameter Px06 the on stand by icon highlights the state The display normally shows the quantity selected by the PdIS parameter the icon that indicates the unit of measurement of the quantity displayed 5 3 Manual functioning mode The program allows to set manual functioning for the valve In this way the over heating algorithm is by passed Manual functioning of the devices is useful when functional tests must be performed on the machine in order test the integrity and correct functioning Therefore using the local keyboard it is possible to enable the manual function and set the valve output 90 the same could be performed from the serial For reasons of safety and to prevent possible damage the valve must be On enabled in order to operate in manual mode The maintenance icon switches on during manual functioning Forcing is performed via relevant parameters 02 In particular with
18. alvanically isolated from other devices Connection of the analogue inputs TM168DEVCM has two analogue inputs one for NTC temperature probe and one for pressure transducer 4 20 mA The pressure transducer can be powered via a 12 VDC unstabilised voltage available on an instrument clamp The maximum length of the analogue input connection cables is 3 m Connection of the digital inputs TM168DEVCM has three digital inputs of which two low voltage functioning consent and back up battery charge state non optoisolated and one in high voltage functioning consent The maximum length of the digital input connection cables is 3 m Connection of the digital outputs TM168DEVCM has one digital output with electro mechanical relay The maximum length of the output connection cables is 10 m Connection of the electronic expansion valve The maximum length of the electronic expansion valve connection cables is 6 m Precautions The indications regarding the maximum lengths of the connections imply that a series of precautions are respected To prevent immunity problems it is good practice to comply with the following indications avoid places with antennas do not wire probe inputs with relay outputs generally prevent mixing low and high voltage signals do no wind cables around power components Page 4 TM168DEVCM USER MANUAL 2 2 TM168DEVCM electric connection Below find the TM168DEVCM connection layout with relative table regarding th
19. default value of the configuration parameters Operate as indicated make sure no procedure is in progress press the UP and DOWN for 4 s the display will show a label press the UP or DOWN key to select PA press the SET ENTER key press the UP or DOWN key within 15 s to set 743 press the SET ENTER key or do not operate for 15 s press the UP and DOWN for 4 s the display will show dEF press the SET ENTER key press the UP or DOWN key within 15 s to set 149 press the SET ENTER key or do not operate for 15 s the display will show flashing dEF for 4 seconds after which the instrument will exit the procedure cut the instrument power supply off Make sure that the default value of the parameters is appropriate 3 7 Main menu It is possible to enter display this menu holding the UP DOWN keys down for 4 seconds The first variable displayed is 100 evaporation pressure pressing SET ENTER the value is displayed Using the UP or DOWN keys scroll the list of VCM variables in reading only mode To exit the procedure press UP DOWN for 4 seconds or do not operate for 60 seconds or press the ESC key 3 8 Display of firmware identification On switch on during the lamp test phase holding the DOWN key the project identification is displayed for about 2 seconds The information regarding the versions revisions of the project is displayed in sequence The procedure is exited automatically at the end of the
20. e ee ee 14 5 1 PRELIMINARY CONSIDERATIONS 6 19 5 2 ENABLING MODE FOR VALVE REGULATION 021 1 0000 19 5 3 MANUAL FUNCTIONING MODE ees se se ee ee ee ee ee ee ee ee ee ee ee ee ee 19 5 4 VALVE STATE co Sede cd 21 5 5 FUNCTIONING MODE SELECTION FROM THE PARAMETERS 5 21 6 1 PROBE AI ARMS es ELENA UR ER M EE de c 22 6 2 ALARM RELA Y ete dee 22 6 3 2 gab ee oe de GO bg ee e eis tee bet ee bis b eec tins debel 22 7 LIST OF THE MODBUS VARIABLESS eee ee ee ee eee eee eese se eese eese eese esee eese eese sos ss soes DO 7 1 INTRODUCTION ERREUR I ES 23 7 2 ADDRESSING 8 00 23 7 3 IMPLEMENTED MODBUS FUNCTION CODES iese esse es sees ee ee ee ee ee ee ee 23 7 4 DATA EXCHANGE 5 211 6 se ee ee ee ee eese eiae ee ee ee 24 7 5 HOLDING REGISTER ADRESSES 4 4 4 ee ee ee ee ee ee ee 9
21. e meaning of inputs and outputs main main voltage voltage 9 5 o 9 a 5 to the electronic expansion valve o look at the meaning of connector 2 RS Hbi Hw sasie hede i connector 1 NOI COHVCOH IE vi v2 va vs connector 2 dipswitch Kl connector 4 instrument power supply power supply from backup battery loading status consent to operate evaporation pressure suction temperature Connector 1 functioning consent relay output and digital input high voltage Code Description NOI relay normally open contact COI common relay COHV Functioning consent digital input 230 VDC 15 COHV Functioning consent digital input 230 VDC 15 Connector 2 electronic expansion valve Code Alco reference Description for EXM 246 EXL 246 valves VI Shield V2 2B White wire V3 2A Orange wire VA 1B Blue wire V5 1A Yellow wire Code Alco reference Description for EX4 EX5 EX6 EX7 8 EX9 valves VI Shield V2 2B White wire V3 2A Black wire Page 5 TM168DEVCM USER MANUAL V4 1B Blue wire V5 Brown wire 1 The red w
22. e possible to block the possibility of modifying the set point in his case if you try to modify the set point LOC is shown for 2 s 3 5 Setting the configuration parameters This paragraph presents the menus found in the application The main menu is divided into two levels user and installer The installer level is protected by a password The range of values for those that can be set for the password is 99 999 default 19 After 1 minute that no key is pressed the password expires and must be set again To access the procedure operate as indicated make sure no procedure is in progress Page 13 TM168DEVCM USER MANUAL press the UP and DOWN for 4 s the display will show a label To select a parameter press the UP or DOWN key To modify a parameter press the SET ENTER key press the UP or DOWN key within 15 s press the SET ENTER key or do not operate for 15 s To access the installer level press the UP or DOWN key to select PA press the SET ENTER key press the UP key or the DOWN key within 15 s to set the password defined with the PASS parameter default 19 press the SET ENTER key or do not operate for 15 s press the UP and DOWN for 4 s the display will show a label To exit the procedure press the UP and DOWN for 4 s or do not operate for 60 s Cut off the power supply to the instrument after modification of the parameters 3 6 Restore the
23. egister at address FF08 representing the FW ID field FirmWare IDentifier PAVE ed n ie of of Hie AGE Address Address Register Register PRE BE TX F7 03 FF 08 00 01 21 4A Slave Function Byte Count m mi Low High Address Code AURIS value value RX F7 03 02 01 8D 1 4 The value is 018D 397 Example 3 Writing two Holding Registers starting at address 0607 parameters PCO6 and 7 with values 10 and 100 Page 24 Sage sd Migh Deel Baar Wate Daw CRC GRO Address Starting Starting Num Num SS High Low High Low High High Code Address Address HR HR 5 F7 10 06 07 00 02 04 00 0A 00 64 A5 8B Slave NE SAFE GIE Adress tion Starting Starting Num Num High High Code Address Address HR HR RI sr s10 306 07 500 02 sea 17 TM168DEVCM USER MANUAL 7 5 Holding register adresses table Description Access Suction pressure in mA 2 decimal digits Coil out temperature 1 decimal digit Saturation temperature from suction pressure 1 decimal digit gt Suction pressure in Bar psi decimal digit DIGITAL OUTPUTS Relay status 0181 Alarm relay status APP
24. erature is expressed in F R Red Identifies the unit of measurement selected If on it indicates that the temperature is expressed in C K Identifies the request for maintenance If on valve is maintenance operating in manual mode Red Identifies the presence or not of alarms Alarms are present if alarm it is on otherwise it remains off HP Green It is active when the MOP function is activated MOP Off function not active On MOP function enabled Flashing MOP alarm LP Green It is active when the LOP function is activated LOP Off function not active On Low pressure alarm Flashing LOP alarm SH Green It is active when the SH function is activated Off function not active On function on I am viewing the SH value Flashing LSH HSH alarm SP Green Identifies that a set point is being displayed Flashing the set point is being modified Page 12 TM168DEVCM USER MANUAL Green Battery state DI2 Back up battery Off Battery charged On Back up battery being charged or back up module disconnected 0 Identifies the state of valve on stand by Off valve on enabled On valve off disabled Flashing valve in start up central decimal point Red Identifies the Intrabus communication state higher Off No communication On Communication error Flashing Communication OK 3 2 Main page The main screen changes according to the state of the valve if
25. flashes 10 PA12 ALLP Low hesi The LP LED switches PA30 PA31 PA32 on PA33 LOP LOP The LP LED flashes 40 41 42 50 51 PA52 Problems with the electric mains displayed only if back up battery is present Page 22 TM168DEVCM USER MANUAL 7 List of the ModBus variables 7 1 Introduction This document describes the resources of the device that can be accessed via the serial port The protocol is MODBUS RTU 7 2 Addressing conventions Please note that according to MODBUS specs the first register is called register 1 register x must be read ad address x 1 7 3 Implemented ModBus function codes Command Function Code Notes READ HOLDING REGISTERS 03 Maximum 95 registers at once WRITE SINGLE REGISTER 06 WRITE MULTIPLE HR 10 Maximum 95 registers at once Page 23 TM168DEVCM USER MANUAL 7 4 Data exchange examples Example 1 Reading Holding Register at address 0601 the SEtP parameter function modality Note that according to MODBUS that is register 1538 Ps eee Af GE of ed of tou righ DRIES Address Address Register Register SES ERE TX F7 03 06 01 00 01 C1 D4 NE Byte Count Ee Es RE then Address Code y x x CRC CRC value value RX F7 03 02 00 01 1 91 value is 1 Example 2 Reading Holding R
26. ire and the brown wire are not used Connector 4 instrument power supply back up battery power supply measurement inputs digital inputs Code Description 1 Instrument power supply 24 VDC 2 Common analogue and digital inputs 3 Common analogue and digital inputs 4 Common analogue and digital inputs 5 Not used 6 Not used 7 Analogue input 2 NTC temperature probe 8 Analogue input 1 pressure transducer 4 20 mA 9 Instrument power supply 24 VDC 10 Back up battery power supply 12 VDC 11 Pressure transducer power supply 12 VDC 12 Not used 13 Not used 14 Not used 15 Functioning consent digital input 16 Back up battery charge state digital input Connector 5 to the TTL RS 485 interface 2 3 TM168DEVCM dimensions and installation The mechanical dimensions of TM168DEVCM are given below the measurements are expressed in mm in 158 0 6 220 d T T Ls EM Installation recommendations make sure that the work conditions temperature of use humidity etc lie within the limits indicated in the technical data Page 6 TM168DEVCM USER MANUAL do not install the instrument in proximity of heat sources resistances hot air pipes etc appliances with strong magnets large diffusers etc places subject to direct sunlight rain hu
27. lamp test Page 14 TM168DEVCM USER MANUAL 4 List of parameters Below find the list of all parameters managed by the application A brief description the range of acceptable values unit of measurement the default value and the menu in which it is found is supplied for every parameter The menus are structured according to the following logic user menu UT allows to modify the overheating set point Installer menu 15 allows to modify all parameters only if the installer menu is protected by a password Code Parameter description Default Min Max U M Menu Notes FUNCTIONING MODE 1 Parameters SEtP Functioning mode 1 1 3 15 2 Parameters Set2 3 Parameters Set3 chiller Set Point Superheat Chiller 6 0 5 1 0 m up SET Set Point Low Superheat 30 0 K 2 Chiller 2 0 5 1 0 50 0 R IS SP Superheat Chiller High 50 0 K 30 0 5 1 0 90 0 R IS 40 0 40 0 PCO4 Chiller Temperature 30 40 0 100 0 F IS 40 0 40 0 5 Chiller Temperature 30 40 0 100 0 F IS 06 Valve opening duration 5 1 30 IS from start up pogr opening 50 10 100 15 start up SET2 heat pump PPOl HP Set Point Superheat 6 0 5 1 0 2 a dr EF Oe eee PPO2 Set Point Superheat HP 2 0 5 1 0 500 4 15 SP Superheat HP High 50 0 K PP03 30 0 5 1 0 90 0
28. llowing an alarm alarm OFF Blink ON ALL Valve forced following an alarm alarm PdIS The quantity established with the PdIS parameter is shown on the display 5 5 Functioning mode selection from the parameters set Three parameters set are envisioned to satisfy the regulation requirements of the more complex machines Each parameters set includes the start up parameters time and opening value the SH set point SH high low alarm set the LOP set and the MOP set The parameters set or functioning mode will be selected using the SEtP parameter As an example the three sets could represent the parameters for functioning as chiller or as heat pump or as defrost Page 21 TM168DEVCM USER MANUAL 6 Diagnostics The application can manage a series of alarms relative to the valve On the basis of the various types of alarms it is possible to configure any signalling delay The icon flashes when one or more alarms are active In order to display the various alarms press the UP key from the main page for about 2 seconds the first alarm present is displayed using the UP or DOWN keys scroll all of the alarms present If there are no alarms pressing the UP key for two seconds has no effect When the causes of the alarm have disappeared the instrument will go back to normal functioning of the digital inputs relative to the alarms e g battery charger input are managed by an Alarms Logic parameter that has the following meaning
29. midity excessive dust mechanical vibrations or shocks in compliance with Safety Standards the protection against any contact with the electric parts must be ensured via correct installation of the instrument parts that ensure protection must be fixed in a way such that they cannot be removed without the aid of a tool Page 7 TM168DEVCM USER MANUAL To install TM168DEVCM operate as indicated in the diagrams points 1 and 2 2 Page 8 TM168DEVCM USER MANUAL 2 4 General features Reference Standards regarding safety EN60730 1 Purpose of the device Electronic expansion valve driver Storage conditions 10 65 non condensing lt 80 Functioning conditions OT50 C non condensing R H lt 80 Class according to the protection against electric shocks Control device to be integrated assumes the classification of the appliance with which it is integrated Type of disconnection Reduced interruption relay contacts PTI of the insulating materials gt 250V Container Assembly on omega guide Type of actions 1 Pollution Normal Class of software A Period of the electric stress of the insulating parts Long
30. table Because variability in the conditions of use is normal for cooling machines consider an air cooled chiller the thermostatic cannot guarantee the constant over heating value and often in order to keep over heating values acceptable also in day to day functioning it is forced to increase over heating in greater functioning conditions at the expense of plant efficiency The microprocessor regulation is a formidable potential that opens the doors of any innovation in the strategy of regulation and use Some main features and or functionalities of the electronic valves are brief opening closure times high regulation resolution shut off functionality continuous flow modulation correct stress in the cooling circuit 5 2 Enabling mode for valve regulation If the valve is closed disabled and regulation deactivated the display will show OFF and the on stand by icon is on The valve can be opened enabled and regulation activated in one of the two following ways selectable from parameter 06 from digital input stand alone functioning enabled from parameter 06 0 or 1 in this case it can be enabled from optoisolated digital input DIHV 06 1 or from non optoisolated digital input 06 0 A typical application is the use of an optoisolated digital input 230VAC connected in parallel to compressor therefore the valve regulates when the compressor is on otherwise it is off from IntraBus serial function en
31. the valve is not enabled vale open and regulation deactivated OFF is shown and the relative icon stand by is on if the valve is enabled valve closed and regulation activated the values selected by the PdIS parameter is selected or an error label The relative icon stand by is off an icon corresponds to the quantity displayed 3 3 Temporary display of the quantities Operate as indicated press the DOWN key for 2 seconds the SH label is displayed press the SET ENTER key to display the over heating value measured press the UP or DOWN key to change the default display according to the following table SH Over heating value measured PrES Pressure value measured valve opening TEMP Temperature value measured TSAT Temperature value calculated from the pressure SHSP Over heating set point value SEtP Set of parameters currently selected To exit the procedure press SET or do not operate for 60 seconds or press UP or DOWN until the display shows the quantity established by the PdIS parameter or press the ESC key 3 4 Setting the work set point Operate as indicated make sure that the machine is on that the keyboard is not blocked and that no procedure is in progress press the SET ENTER key for 1 s the display will show the current over heating set point press the UP or DOWN key within 15 s press SET ENTER or do not operate for 15 s Using parameter PH30 it will b
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