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MC 785-MP - VDH Products

1. Pt100 3 wire ensor 3 Programmable om 1G green 1 0 input output Signal Analog out ag 0 10Vde Programmable hOCSsigh 2 F Digital in C common OV Programmable GND Optional RS485 Network 2xTwisted pair Line B shielded min 0 5mm Shield only at and max 1KM one side of the cable to Earth Remark Place terminator resistor of R 250 Ohm or terminator jumpers between line A and line B at both RS485 Network cable ends Relay outputs RY5 Programmable RYA Relay output RY1 Programmable Supply 230Vac 50 60Hz Document nr 080608 Version V2 2 MC 785 MP Client General Page 24 of 28 Connections diagram MC785 MP with LMS units drawing 032152w1 PE earth N upply 230Vac L 50 60Hz LMS SUPPLY UNIT 12v Ov 12v 4 Ov z 12v m Ov gt E Z l2v LMS 2xPT100 os Lt Ov 2xRH UNIT RH sensor 3 wire Sensor 11 Max 4 LMS PT100 UNITS Programmable adres jumpers as follows mod 1 dl yes J2 yes J3 no Pt100 nsor 5 Pt 100 ensor 6 RH 1 ensor 7 RH 2 nsor 8 J2 no J3 no Jl and J2 Sensor 12 must be Sensor RH sensor 3 wire Sensor 10 Programmable green white Pt100 3 wire Sensor 9 brown Programmable green white Pt100 3 wire Sensor 8 brown Programmable mod 3 Pt100 Supply 12Vdc T 0014de 0014d T HY Z Hu LMS PT100 UNIT Max 4 LMS
2. 0 cee nee 10 3 8 Starting defrosting manually sire rece rirere ccs 10 3 9 Starting humidification manually lt cs ccsse res irere tiere eee 10 3 10 Reading out and adjusting the time and pulse counters reading inside RH 11 3 11 Manual day night setting 0 0 ene 11 3 12 Manual Start drying rones teeta ea ona ETER EEE oc TEE ENESE 12 3 13 INTO MENU 2 tba re dale tate E cue dda te hawetad Ciaeotated a eetigt cuad 12 4 Adjusting internal parameters 0 12 5 Sensor Calibration ai e A cea nats io Wee oh ceo is Wek Ges B ce ae eo See AS 20 6 AaS Aan Palade aie doe aes eee ia ie heat as Pe aa eae ee Petia eek Sd 20 7 FOV OW 34 0 d4 cred beeen ed dd haved etas ened ed doanedbedag ehb dd eia aae 21 8 CONNGCHONS sos sraa wish ane oes Ea Ae anish eA ees a ea aan ean G nish Gee oes Blew aan aants eG 22 9 DIM NSIONS Satins stad ts ids Senet aah aoe aga dead ng ane bead eat vey thal Og Pee eae ag ees ae ah 25 Appendix A Items inthe info menu 00000 27 This document was drawn up with utmost care and the information in it is believed to be correct VDH Products BV shall not however accept any liability whatsoever for any mistakes or errors and reserves the right to adjust or modify this document without prior notice Document nr 080608 Version V2 2 MC 785 MP Client General Page 3 of 28 Technical specifications 1 1 MC 785 MP controller General Type MC 785 MP Multi Purp
3. Defrost mode 0 on real time base 1 on interval base Off cycle defrost if control temp higher than Defrost time 1 24 00 not active hours min Defrost time 2 24 00 not active hours min Defrost time 3 24 00 not active hours min Defrost time 4 24 00 not active hours min Defrost time 5 24 00 not active hours min Defrost time 6 24 00 not active 00 24 hours min Defrost time 7 24 00 not active hours min Defrost time 8 24 00 not active hours min Defrost time 9 24 00 not active hours min Defrost time 10 24 00 not active hours min Defrost time 11 24 00 not active hours min Defrost time 12 24 00 not active hours min Defrost interval time Defrost release temperature Maximal defrost time minutes Defrost end temperature C Drip off time minutes Time runs from closing hot gas valve stop electric defrost of the last evaporator at simultaneous cooling and defrosting than this time runs per evaporator Fan on delay time after defrosting minutes applies to relay function ventilation during cooling evaporator time starts after drip off time when negative the fan will x minutes be on before any cooling action Maximum number of cells which are defrosting electrical simultaneously Maximum number of cells which are defrosting hot gas simultaneously Minimum number of cells cooling needed for hot gas defrosting Number of evaporators to be defrosted z Alarm delay after defro
4. Function solenoid valve evaporator 3 to relay Function suction valve to relay Function suction valve 2 to relay Function suction valve 3 to relay Function off cycle defrost to relay natural defrost Function Electrical defrost evap 1 to relay Function Electrical defrost evap 2 to relay Function Electrical defrost evap 3to relay Function Hot gas defrost evap 1 to relay Function Hot gas defrost evap 2 to relay Function Hot gas defrost evap 3 to relay Function collect hot gas defrost to relay Function ventilation during cooling evap 1 to relay Function ventilation during cooling evap 2 to relay Function ventilation during cooling evap 3 to relay Function ventilation during ventilaton to relay Function heating to relay Function humidifying to relay Function alarm to relay Function heating valve open to relay Function heating valve close to relay Or OO VS O tee Or SOO on 12 OSS ee Se SS VS Se eS S00 O O O O OOO O OOO OOO O OOO OO Function external dryer to relay Remark It is possible to assign more than one function to a single relay Example Ventilation during cooling P 956 and during ventilation P 957 to the same relay Software production group P 991 Software version number P 992 Serial number P 993 Production date ear week Document nr 080608 Version V2 2 MC 785 MP Client General Page 20 of 28 5 Sensor calibration The temperature sensors 1 till 19 can be calibrated
5. bit 0 15 0000 relay 1 16 not energized 0001 relay 1 energized relay 2 16 not energized FFFF relays 1 16 energized Hexadecimal representation of energized relays 17 21 bit 0 4 0000 relay 17 21 not energized 0001 relay 17 energized relay 18 21 not energized FFFF relays 17 21 energized
6. IEC 751 Temperature sensor 3 Progr Pt100 3 wire DIN IEC 751 Temperature sensor 4 Progr Pt100 3 wire DIN IEC 751 Note Sensor functions are programmable 1 4 LMS RH Pt100 MODULE extension Maximum of 4 modules using address jumper settings Type number 901 000315 Supply 12 VDC 1 2 VA Communication IC network 3 wire OV SDA SCL Address jumpers RH Pt100 module 1 install J14 and J2 and do not install J3 Sensor 4 to 7 RH Pt100 module 2 install J2 and do not install J1 and J3 Sensor 8 to 11 RH Pt100 module 3 install J1 and do not install J2 and J3 Sensor 12 to 15 RH Pt100 module 4 do not install J1 J2 and J3 Sensor 16 to 19 Pt100 inputs Temperature sensor 1 Progr Pt100 3 wire DIN IEC 751 Temperature sensor 2 Progr Pt100 3 wire DIN IEC 751 RH sens inputs RH sensor 1 Progr dc 12V rh 0 1 Vdc 0 100 RH dc O0V aut RH sensor 2 Progr dc 12V rh 0 1Vdc 0 100 RH dc OV 3 wire Note Sensor functions are programmable Remark The module numbers of the LMS PT100 MODULES and the LMS RH Pt100 MODULES may not overlap They both use the same address range So don t use equal address jumers settings on these both types 1 5 LMS SUPPLY MODULE for extension modules Type number 901 000213 Supply 230 VAC 50 60 Hz Output 3x12 VDC 7 VA Document nr 080608 Version V2 2 MC 785 MP Client General Page 7 of 28 2 Functional specifications De MC 785
7. other active t sensor groups by pressing the SENS Button one or more times To indicate what is being shown the display on the right shows which sensor group is being shown Prod the average value of the product sensors buit the average value of the outside sensors inbl the average value of the heating sensors blow in sensors ont1 2 3 the lowest sensor from the defrost sensors from evaporator 1 2 or 3 rhin the average of the rh inside rhou the average of the rh outside The readout always returns to the average value of the active control sensors after 20 seconds Reading out sensors apart Push the SETP button and the SENS button at the same time the temperature display shows the value of sensor 1 while in the right display SE 1 is shown to indicate that sensor 1 is being displayed now Pressing the UP and or DOWN button will display the subsequent sensors SE 2 SE 3 etc Pressing the ON OFF button or not pressing any key for 20 seconds will let the controller return to normal operation Reading out and changing setpoints To change the setpoints press the SETP button The decimal point on the setpoint display will start to blink The value can now be changed using the UP and DOWN buttons Pressing the SETP button again will display the next setpoint Daytime setpoint temperature daytime RH setpoint night time setpoint temperature night time RH setpoint and heating setpoint will be shown suc
8. with a jumper R5485 For signal conditioning N ja Connect B LO to B LO Pair 2 Connect GND 0V to GND 0V Shield the cable to Earth z o Place Pullup down resistors EH Network connections b i Shield only at Shield only at only at one point in the E SIS Pair 1 2 one side of p one side of Network May be provided in S Connect A HI to A HI oO i T l l the cable the controller with jumpers to Earth Oruse ALFA 1 TERMINATOR DK PCP HIMIKS lt CMI lt KSS SCHL IMIS DK PCPCHI KDC DCH I lt S lt dC gt c GN Connect Shield to clean Earth a Endpoint j Network cable Y Connection p Network cable Endpoint only on one side of cable Network 2 twised pair shielded point 2 twised pair shielded Network min 0 5mm Network min 0 5mm Pair 1 A B Pair 2 Gnd Pair 1 A B Pair 2 Gnd Max Cable length depends on speed Note 1 AVOID LONG STUB CABLES No longer than 0 5M otherwise use a Repeater Document nr 080608 Version V2 2 MC 785 MP Client General Page 23 of 28 Connections diagram MC 785 MP panel mount drawing 041863w1 P tuk SDA data Configuration Digital in i Pt100 input as c SCL clock Digital in contact prom AA own white i green gr Programmable TC extension bus to LMS relay LMS Pt100 and LMS RH Pt100 Pt100 3 wire Sensor 2 Programmable
9. 0 3 or RH 1 C RH 0 0 Sensor 19 offset LMS UNIT 4 Pt100 4 or RH 2 C RH 0 0 Remark or Pt100 at LMS 4xPt100 module or RH at LMS 2xPt100 2xRH module Cooling group Differential cooling C Minimal cooling time minutes Minimal time between two cooling actions minutes Maximal cooling time during storage minutes Mechanical cooling during night offset i 0 off i 1 on 2 on day temperature setpoint however when temperature setpoint is linked P805 to another controller than the current temperature setpoint of that controller is being used Maximal increasing cooling temperature below the C setpoint after which the cooling will forced stop Maximal temperature above the setpoint after which the C cooling will forced start Cooling cycle time during storage minutes Suction Valve Control bs 0 The evaporator suction valve is driven at the same moments as the evaporator liquid valve apart from a few seconds switching time There is one exception namely during a defrost cycle with several evaporators one by one after the other electrical or hotgas defrosting while all other evaporators cool In that situation at hotgas defrost the evaporator suction valve is again actuated after its suction valve delay time P529 is finished and at electric defrost it is again actuated after both his suction valve delay time P529 and his drip off time P520 are finished Software version 1 18 untill 2 01 has no
10. 2 Monday till Friday 00 00 24 00 hours min Blocking stop time 2 Monday till Friday 00 00 24 00 hours min Blocking start time 3 Monday till Friday 00 00 24 00 hours min Blocking stop time 3 Monday till Friday 00 00 24 00 hours min Blocking start time 4 Monday till Friday 00 00 24 00 hours min Blocking stop time 4 Monday till Friday 00 00 24 00 hours min Blocking start time 1 Saturday till Sunday 00 00 24 00 hours min Blocking stop time 1 Saturday till Sunday 00 00 24 00 hours min Blocking start time 2 Saturday till Sunday 00 00 24 00 hours min Blocking stop time 2 Saturday till Sunday 00 00 24 00 hours min Blocking start time 3 Saturday till Sunday 00 00 24 00 hours min Blocking stop time 3 Saturday till Sunday 00 00 24 00 hours min Blocking start time 4 Saturday till Sunday 00 00 24 00 hours min Blocking stop time 4 Saturday till Sunday 00 00 24 00 hours min Network group Network number set a unique number for each controller in the network Storage group number Controllers with equal group numbers will cool simultaneously during storage 0 not active Cooling capacity of this cell If P 802 0 than not active Maximum cool capacity demand for pre cooling Set point day and night linked to actual temperature set point of controller with network number 0 set point not linked Pre cooling group number Controllers with equal group numbers will cool simultaneously during pre cooling 0 not active Others gro
11. Alternative sensor names sensor group indications Prod buit en inbl from paragraph 3 2 replaced by prd1 prd2 en prd3 Function digital input 1 0 not present 1 rain detector closed input at rain detected 2 stop defrost stops defrost at closing the input Sensor offsets group for calibration Sensor 1 offset MC 785 MP Sensor 2 offset MC 785 MP Sensor 3 offset MC 785 MP C C C o Sensor 4 offset LMS UNIT 1 Pt100 1 Sensor 5 offset LMS UNIT 1 Pt100 2 Sensor 6 offset LMS UNIT 1 Pt100 3 or RH 1 Sensor 7 offset LMS UNIT 1 Pt100 4 or RH 2 eC C C RH C RH ee ee N C C C RH C RH Sensor 8 offset LMS UNIT 2 Pt100 1 Sensor 9 offset LMS UNIT 2 Pt100 2 Sensor 10 offset LMS UNIT 2 Pt100 3 or RH 1 Sensor 11 offset LMS UNIT 2 Pt100 4 or RH 2 Sooo 222 o QOQ S000 Ooo000 OOO aaa ooooo OOOO Q00 OGOOGO oOO00 ooo Remark or Pt100 at LMS 4xPt100 module or RH at LMS 2xPt100 2xRH module Document nr 080608 Version V2 2 MC 785 MP Client General Page 14 of 28 Nr Description Sensor 12 offset LMS UNIT 3 Pt100 1 C 0 0 Sensor 13 offset LMS UNIT 3 Pt100 2 C 0 0 Sensor 14 offset LMS UNIT 3 Pt100 3 or RH 1 C RH 0 0 Sensor 15 offset LMS UNIT 3 Pt100 4 or RH 2 C RH 0 0 Sensor 16 offset LMS UNIT 4 Pt100 1 C 0 0 Sensor 17 offset LMS UNIT 4 Pt100 2 C 0 0 Sensor 18 offset LMS UNIT 4 Pt10
12. MC 785 MP User manual Wall and Panel mount version with Dutch front dag oo tijd po 7 m 0000 et ev Description MC 785 MP Doc nr 080608 Type Manual Number of pages 28 Version V2 2 File Do080608 MC785 MP v22 EN By concept wpd MC785MP 031922 V3 04 02 05 2013 Software VDH Products BV Roden Holland File Doc 08 Document nr 080608 Version V2 2 MC 785 MP Client General Page 2 of 28 Table of contents 1 Technical specifications pcer 2 265 aso ana gus wala ane dad alate ana Par alah adhe a pb Gad ge alae Gana 3 1 1 MC 785 MP controller rr ara reaS r ee eee eee 3 1 2 LMS RELAY MODULE extension 0 0 00 eae 6 1 3 LMS Pt100 MODULE extension 0 eae 6 1 4 LMS RH Pt100 MODULE extension 0 0 00 eae 6 1 5 LMS SUPPLY MODULE for extension modules 0 0 0 c eee eee 6 2 Functional specifications 0 00 cece tee 7 3 Controls 22 s 4ce088 eo each aceite Wun a E TOE EES EERENS ibaa eae dep eum ean 9 3 1 Turning the controller on off lt eiee cresci ecsristi eet 9 3 2 Reading out the sensor groupS 0 0 00 tte eee 9 3 3 Reading out sensors apart 0 0 eee eee 9 3 4 Reading out and changing setpoints 0 0 cee eee 9 3 5 Setting controllermode oide Teneo 0c eee ee bee ene eee ene 10 3 6 Adjusting the ventilation cooling mode 1 6 0 nee 10 3 7 Adjusting the defrost mode
13. MP has three phases namely the pre cooling phase the storing phase and the standby phase In the standby phase the controller only assists for hot gas defrosting where this controller itself cannot defrost During the pre cooling phase the controller cools continuously if the temperature is higher than the setpoint temperature During the storing phase the controller cools once during the cycle time P307 minutes until the temperature has dropped again or is equal to the setpoint temperature During this cooling other controllers connected to the network are blocked too so that only one group a group may have multiple controllers is cooling If the temperature has exceeded the setpoint temperature plus the forced cooling temperature P306 cooling will always be activated despite the fact that the controller in the network is not allowed to cool In that case cooling will take place until setpoint temperature has been reached This is done to avoid a situation where it will not be possible within the cycle time in the case of a large number of controllers to cool all units until they have reached the setpoint temperature The control parameters can be adjusted through internal programming A choice can be made between no defrosting natural defrosting electrical defrosting and hot gas defrosting Defrosting occurs on real time basis with no more than 12 switching points or after an interval P156 which can be set betwe
14. N O FASE FASE as UIT Document nr 080608 Version V2 2 MC 785 MP Client General Page 22 of 28 8 Connections Connections diagram MC 785 MP wall mount drawing 031878w1 Supply 230Vac 50 60Hz Relay output RY1 Programmable Relay outputs RY2 Programmable RYS oye RY4 RY5 jeld only at e side of the cable to Earth Optional RS485 Network Remark Place terminator resistor of Line 2xTwisted pair R 250 Ohm or terminator jumpers Line A amp shielded between line A and line B at GND min 0 5mm both RS485 Network cable ends C OV and max 1KM Digital in Programmable Analog output 0 10Vde Programmable W i Pt100 3 wire Sensor 3 Programmable Pt100 3 wire Sensor 2 Programmable Configuration Digital in Pt100 input as green Digital in white contact brown Pt100 3 wire Sensor 1 Programmable C extension bus to LMS relay LMS Pt100 and MS RH Pt100 SCL clock SDA data RS 485 NETWORK CONNECTIONS 2 twisted pair shielded cable Controller 1 One of the Controller 2 Place Terminator resistor Controller x Controllers of 250 Ohm only at both can be the ends of the RS485 cable ___ o PC Interface oI between line A and line B AIAI Repeater is A B feno May be provided inthe a e BND also a contr RS485 controller
15. PT100 UNITS adres jumpers as follow mod 2 Jl no J2 yes J3 no Pt100 Sensor 8 Pt100 3 wire Sensor 7 Programmable Pt100 3 wire Sensor 6 Programmable mod 3 J3 no Jl and J2 pti00 must be Pt100 placed Pt100 mod 1 Pt100 nsor 15 K mod 4 no J2 no IST Pti00 1 Sensor 16 SI a Pt100 Sensor 17 rae Pt100 3 Sensor 18 USII Pt100 4 Sensor 19 Pt100 3 wire Sensor 5 Programmable Pt100 3 wire Sensor 4 Programmable IT OOT 4dl2 OOT Fdf OOT 4dlv O0T 4d NO_RY1 1C_Ext S0 2 NC _RYICI C Ext Relay output LMS RELAY UNIT So CT EXE Rv Relay 6 So c RYICUC Ext Programmable Max 4 LMS RELAY UNITS z Ou NO_RY2 1 C Ext Relay output adres jumpers as follow RY2 I C Ext RY2 Relay 7 5 mod 2 gt dione J2 yes TOU z Programmable a RY1 4 Relay10 13 5 NO RY3 I C Ext Rel tput i _J2 no CU elay outpu S U7 D SIS euie Ext RY3 Relay 8 EA lt 4 Jl no J2 no A RY4CIC Ext Programmable 2 RYi 4 Relay18 21 gt On 42 aE Relay output o HINI RY4 1 C Ext RY4 Relay 9 A Programmable EH earth MC 785 MP Controller Supply 230Vac 50 60Hz a Relay output u RY1 Programmable w D gt Relay outputs 7 RY2 Programmable RS a AE apy ja he RYS RYSA ia e NO RY5 x Shield only at one side of the ce cable to Earth Optional Remark Place terminator resistor of Line B AE T R 250 Ohm or terminat
16. analog output for heating with P350 P 570 P band heating C P 571 time heating minutes P 572 Run time heating valve seconds Alarms group Absolute minimum alarm at pre cooling C Absolute minimum alarm delay at pre cooling ig minutes Absolute maximum alarm at pre cooling 0 50 C Absolute maximum alarm delay at pre cooling z minutes Relative minimum alarm at pre cooling 0 50 C Relative minimum alarm delay at pre cooling es minutes Relative maximum alarm at pre cooling 0 50 C Relative maximum alarm delay at pre cooling Z minutes Absolute minimum alarm at storing C Absolute minimum alarm delay at storing z minutes Absolute maximum alarm at storing 0 50 C Absolute maximum alarm delay at storing 5 minutes Relative minimum alarm at storing 0 50 C Relative minimum alarm delay at storing Z minutes Relative maximum alarm at storing 0 50 C Relative maximum alarm delay at storing z minutes Action at minimum alarm 0 Only report with alarm relay 1 Report with alarm relay and everything off Action at maximum alarm 0 Only report with alarm relay 1 Report with alarm relay and everything off Document nr 080608 Version V2 2 MC 785 MP Client General Page 18 of 28 Description Range mE eae E e Blocking group Blocking start time 1 Monday till Friday 24 00 not active 00 00 24 00 hours min Blocking stop time 1 Monday till Friday 00 00 24 00 hours min Blocking start time
17. ase will not change when switching off and on again Adjusting the ventilation cooling mode Pressing the fan button lets the ventilation cooling mode switch from automatic ventilation to continuous ventilation relay function fan on while cooling an evaporator During electrical or hot gas defrosting however the fan will be switched off The LEDs next to the setpoint display indicate the ventilation mode The controller remembers the ventilator cooling mode so that the ventilator cooling mode will not change when switching off and on again Adjusting the defrost mode Parameter P501 is used to adjust the defrost mode to No defrost Natural defrost Electrical defrost or Hot gas defrost Starting defrosting manually Pressing the UP and DOWN buttons at the same time will start forced defrosting manually independently of the defrost timer Starting humidification manually Pressing the fan and PRG buttons at the same time will start forced humidification manually independently of the humidifying timer Document nr 080608 Version V2 2 MC 785 MP Client General Page 11 of 28 3 10 Reading out and adjusting the time and pulse counters reading inside RH The upper right display indicates either the time the number of cooling pulses the cooling hour meter or the inside RH During normal operating condition is shown which was last selected with the key as described below Pushing t
18. cessively The daytime night time LEDs and the RH C LEDs indicate which setpoint is displayed The heating LED blinks and the LED C lights up at showing the heating setpoint Pressing the SENS button or not pressing any key for 20 seconds will let the controller return to normal operation If a temperature setpoint connection with another controller has been set using parameter P805 this can be viewed by showing in the measured value display n symbol with the network number of the other controller behind it Daytime and night time temperature setpoints can be adjusted but they will be set to the current temperature setpoint of the connected controller again within a few seconds if present on the network Document nr 080608 Version V2 2 MC 785 MP Client General Page 10 of 28 3 5 Setting controller mode The following phases can be selected to operate in Pre cool phase Pressing the INKOEL FASE button will activate pre cooling The LED above this button lights up to indicate this Storing phase Pressing the BEWAAR FASE button will activate storing The LED above this button lights up to indicate this Standby phase Pressing the INKOEL FASE button and the BEWAAR FASE button at the same time lets the controller switch to the standby phase provided P901 1 to indicate this mode both LED s above both buttons will by blinking at the same time The controller remembers the phase to make sure that the ph
19. d 1 Blocked Door mode depends on contact P902 P906 and P910 0 No blocking because of door gt 0 One or more functions blocked by the door Extern alarm contact 0 No alarm 1 Alarm Number of MC 785 MP controllers detected on the network only at master Forced cooling counter only at master Humidifying mode 1 No humidifying 2 Humidifying waits for cooling end 3 Active humidifying Heating mode abc 0 function off 1 function on a send heating valve closing b send heating valve opening c heating on Defrost sub mode valid at defrost mode 16 and 17 evaporator to be defrosted is still cooling stop permision requested evaporator defrosting evaporator not defrosting while dripping off evaporator not defrosting waiting at suction valve delay 5 evaporator not defrosting pre ventilation Cool sub mode valid at cool mode 20 21 22 and 23 values are reserved Index from 0 evaporators to be defrosted defrosting at evaporators alternately defrost Absolute humidity inside in g kg if known Absolute humidity outside in g kg if known Hot gas defrost interrupted 0 Defrosting yet successful ended 1 Defrosting interrupted by blocking alarm or master Ventilation mode abcd 0 function off 1 function on a automatic ventilation b ventilation during cooling evaporator 1 c ventilation during cooling evaporator 2 d ventilation during cooling evaporator 3 Hexadecimal representation of energized relays 1 16
20. e cooling after that time then cooling will be switched on for the unit for which the target value differs most from the setpoint for mechanical cooling see P304 Defrosting is stopped based on temperature P159 with a time limit P518 Defrosting is also stopped if an input with a defrost stop function P101 P102 P103 or P151 is closed The fan is turned off during defrosting After defrosting cooling and ventilator will be blocked during the drip dry time P520 after which the fan comes on again once the ventilator delay time P521 has expired In the event of a negative ventilator delay time P521 the fan will run for P521 seconds and cooling will start only after that Document nr 080608 Version V2 2 MC 785 MP Client General Page 8 of 28 If a sensor input that is used as an alarm input contact is closed cooling and the fan will stop and the alarm LED will light to indicate this Operation of heating control Heating control of the controller will be active if the temperature setting is below the setpoint temperature minus the differential P573 differential heating and will stop again if the temperature setting exceeds the setpoint temperature The additional limitation here is that heating control can only be activated P563 minutes after cooling This also requires a heat sensor blow in sensor Using the analogue output and or relay heating open and closed the heating control tries to make sure tha
21. e item 21 separated by a dot 4 Defrost mode Defrost off Defrost off start permission requested Defrost off start natural defrost permission requested Defrost off start electric defrost permission requested Defrost off start hot gas defrost permission requested Natural defrosting Electric defrosting Hot gas defrosting Defrost off dripping off Defrost off in transition to next mode Defrost off pre ventilation One evaporator hot gas defrosting rest cooling or off One evaporator electric defrosting rest cooling or off Defrost off remaining suction valve delay is still running LED Defrost flashes at 1 2 3 4 LED Defrost lit at 10 11 12 13 16 17 At defrost modes 16 and 17 the defrost mode in the display is complemented by the defrost sub mode see item 20 and the index of evaporator see item 22 separated by a dot Defrost command from master see defrost mode ee Number of controllers in COOLING PHASE or STANDBY that are cooling only at master Number of controllers in MAINTAIN PHASE that are cooling only at master Number of controllers with hot gas defrost request only at master Number of controllers busy with hot gas defrost only at master Number of controllers busy with electric defrost only at master User manual Document nr 080608 Version V2 2 MC 785 MP Client General Page 28 of 28 item Meaning Values Description Blocking active depends on contact and P701 P716 0 Not blocke
22. en 1 and 48 hours As long as the temperature of the evaporator exceeds the defrost release temperature P517 defrosting cannot be started The ventilator switches on again after defrosting once the ventilator delay time P521 has ended a no defrosting The ventilator relay runs if the thermostat requests it to After cooling has stopped the fan will run on for a programmable delay time P401 b natural defrosting Ventilator control during cooling as for a The fan runs on during defrosting The defrost relay will not switch on during defrosting The defrost will finish on time P518 c electrical defrosting Ventilator control during cooling as for a Defrosting is stopped based on temperature P159 with a time limit P518 Defrosting is also stopped if an input with defrost stop function P101 P102 P103 or P151 is closed The ventilator is turned off during defrosting After defrosting cooling and ventilator will be blocked during the drip dry time P520 after which the ventilator switches on again once the ventilator delay time P521 has expired In the event of a negative ventilator delay time P521 the ventilator will run for P521 seconds and cooling will start only after that d hot gas defrosting Ventilator control during cooling as for a With hot gas defrosting the network will ask whether one or more other units are cooling If this is not the case the controller will wait for 15 minutes If no units at all ar
23. fter a cut off has been cancelled and also after humidification has ended cut off function has been cancelled door has been closed provided P906 1 If cooling is still under way as humidification and cooling at the same time are not allowed P562 cooling will be stopped if allowed because of hot gas supply During humidification even when waiting until cooling has stopped the relay functions fan on while cooling an evaporator will be active Humidification stops after the RH setpoint has been reached or when the maximum humidification time P551 has expired if no inside RH measurement is available Document nr 080608 Version V2 2 MC 785 MP Client General Page 9 of 28 Control After the controller has been provided with a power supply you have to wait a few seconds before the controller functions The upper right display shows St UP Startup The displays on the left indicate the measured temperature during normal operation and the current setpoint temperature If desired the display on the right indicates time the number of cooling pulses cooling hours or the measured inside RH value 3 1 Turning the controller on off The ON OFF button activates or deactivates the controller Reading out the sensor groups The average temperature of the active control sensors is shown on the temperature display during normal operation It is possible to read out the temperature and humidity of
24. have one central common C RY2 Relay 2 Progr NO 250VAC 10A non inductive RY3 Relay 3 Progr NO 250VAC 10A non inductive RY4 Relay 4 Progr NO 250VAC 10A non inductive RY5 Relay 5 Progr NO NC 250VAC 10A non inductive Analog output 1 Progr OV Signal 0 to 10VDC Input and output functions can be programmed using the internal parameter settings Set up an RS485 network using 2x twisted pair shielded cable at least 0 5mm where Pair 1 has line A connected with line A and line B connected with line B Pair 2 has 2x GND 0V connected with 2x GND 0V Shield the shielding must only be connected to a clean earth on 1 side of the cable Make sure that the cable is laid without branches up to a maximum total length of 1km Both ends of the RS485 network cable must also be terminated with a 250 ohm resistor between line A and line B If an Interface is placed at the end of the network cable then we advise to use the termination jumpers on the Interface instead of a resistor to terminate the network cable Set up the I2C bus extender with a 2x 0 75mm shielded cable where SCL SCL must be connected to SCL and SDA SDA must be connteted to SDA Shield the shielding is connected to OV do not connect to earth Make sure that the cable is laid without branches up to a maximum total length of 5 metres This cable does not have to be terminated See installation diagram at the back of this manual Docume
25. he key will show the clock time on the display The left display will show cloc to indicate that the clock time can be adjusted The clock time can now be adjusted with the UP and DOWN keys The day of the week is shown by the day LEDs and can be adjusted by pushing the PRG key for more than 1 second By pushing the AAN UIT key or pushing no key for more than 30 seconds the clock returns to its normal operation mode As the AAN UIT key is used than the other MC 785 MP controllers on the network will be synchronised with this new time of this controller By pushing the key again the number of cooling pulses will be shown in the display The left display now shows puls The number of cooling pulses is shown without a decimal point It is also to distinguish whether the number of cooling pulses or hours is being displayed By pushing the PRG key for more than 1 second the counter can be reset to 0 By pushing no key for more than 15 seconds the controller returns to its normal operation mode By pushing the key again the number of cooling hours will be shown in the display The left display now shows uren The number of cooling hours is shown with a decimal point in the display By pushing the PRG key for more than 1 second the counter can be reset to 0 By pushing no key for more than 15 seconds the controller returns to its normal operation mode By pushing the key again the measured value of the inside RH sensor is shown
26. int but at temperature setpoint coupling P805 at the actual temperature setpoint of the controller to which it is been linked Minimum inlet temperature C P band for limitation on minimal inlet temperature me l time for limitation on minimal inlet temperature be minutes Ventilation group Ventilation delay after cooling switches off minutes relay function ventilation during cooling evaporator Automatic ventilation mode i relay function automatic ventilation 0 no automatic ventilation 1 automatic ventilation on real time 2 automatic ventilation on pulse pause Pulse time automatic ventilation minutes Pause time automatic ventilation minutes hours min hours min hours min Automatic ventilation stop time nr 2 24 00 not active Pe hours min Automatic ventilation start time nr 1 24 00 not active Automatic ventilation stop time nr 1 24 00 not active Automatic ventilation start time nr 2 24 00 not active hours min hours min hours min hours min Automatic ventilation start time nr 3 24 00 not active Automatic ventilation stop time nr 3 24 00 not active Automatic ventilation start time nr 4 24 00 not active Automatic ventilation stop time nr 4 24 00 not active Document nr 080608 Version V2 2 MC 785 MP Client General Page 16 of 28 Nr Description Defrost group Defrost type 0 no defrost 1 off cycle 2 electrical 3 hot gas
27. ler wants to humidify but is unable to do because cooling is still under way whereas cooling and humidifying at the same time are not allowed P562 If a Cleaning log command given through the RS485 network is being carried out the leftmost decimal point in the temperature display at the upper left will blink Document nr 080608 Version V2 2 MC 785 MP Client General Page 5 of 28 Buttons Inputs and outputs Sensors Digital input Communication Relays outputs Analog output NOTE NOTE AAN UIT ON OFF on off button for the controller with LED SENS sensor select button SETP setpoint pushbutton with LED a up button y down button PRG programming button with LED FAN ventilator mode button auto or continuous INKOEL FASE pre cooling phase start button with LED BEWAAR FASE storing phase start button with LED CLOCK button for setting the clock X DAY manual button daytime mode with LED q NIGHT manual button night time mode with LED Temperature sensor 1 Progr Pt 100 3 wire DIN IEC 751 Temperature sensor 2 Progr Pt 100 3 wire DIN IEC 751 Temperature sensor 3 Progr Pt 100 3 wire DIN IEC 751 Digital input 1 Progr C NO potential free connection PC network max 5 m 2 wire shielded OV SDA SCL RS485 network max 1 km 2x twisted pair shielded 2x GND A B RY1 Relay 1 Progr C NO NC 250VAC 10A niet inductief The next relays
28. nsor defrost sensor defrost sensor evaporator 2 defrost sensor evaporator 3 outside temperature sensor heating sensor inlet sensor inside rh sensor Only at LMS Pt100 RH outside rh sensor Only at LMS Pt100 RH alarm contact in no controls uit 11 door contact in no cooling fan off during max time P 902 12 blocking contact in no everything off 13 stop defrost no Function sensor 2 MC 785 MP 0 7 and 10 13 Function sensor 3 MC 785 MP 0 7 and 10 13 o Hou al Function sensor 4 LMS UNIT 1 Pt100 1 0 7 Function sensor 5 LMS UNIT 1 Pt100 2 Function sensor 6 LMS UNIT 1 Pt100 3 or RH 1 Function sensor 7 LMS UNIT 1 Pt100 4 or RH 2 Function sensor 8 LMS UNIT 2 Pt100 1 Function sensor 9 LMS UNIT 2 Pt100 2 Function sensor 10 LMS UNIT 2 Pt100 3 or RH 1 Function sensor 11 LMS UNIT 2 Pt100 4 or RH 2 Function sensor 12 LMS UNIT 3 Pt100 1 Function sensor 13 LMS UNIT 3 Pt100 2 Function sensor 14 LMS UNIT 3 Pt100 3 or RH 1 Function sensor 15 LMS UNIT 3 Pt100 4 or RH 2 Function sensor 16 LMS UNIT 4 Pt100 1 Function sensor 17 LMS UNIT 4 Pt100 2 Function sensor 18 LMS UNIT 4 Pt100 3 or RH 1 Function sensor 19 LMS UNIT 4 Pt100 4 or RH 2 ae 00 00 NN 00 00 0 o o 0 0 o o 0 0 10 10 0 0 o o 7 r r 7 7 r r 7 7 r r 7 7 r r 09 09 Oo0oo0oo0oo0oo0o0o00000O0O0O0O0O WN NN 00 00 8 and 9 only with LMS modules with RH sensors
29. nt General Page 26 of 28 Dimensions MC785 MP panel mount drawing 961271 207 Panel cutout Topview 217 85 155 145 Frontview Rightside view Dimensions LMS Relay module drawing 970983 LMS Supply Pt100 RH Pt100 module dr 970908 OO00000000000 y y Document nr 080608 Version V2 2 MC 785 MP Client General Page 27 of 28 Appendix A Items in the info menu item Meaning Values Description Master slave mode 0 busy with determining 1 controller is slave 2 controller is master Master slave counter counter to determinate the master slave mode Cool mode Cooling off Cooling blocked Cooling off start permission requested Cooling on until minimum cooling time Cooling on until appropriate temperature is reached Cooling on stop cooling permission requested Cooling off time between cooling actions P305 Cooling off in transition to next mode Cooling on stop permission requested for defrosting One evaporator defrosting one cools for hot gas rest is off One evaporator defrosting rest cools One evaporator defrosting rest in transition to next mode One evaporator defrosting electric rest is off LED cool is lit at 3 4 5 6 8 OCONABRWN O At cooling modes 20 23 the cooling mode in the display is complemented by the cool sub mode se
30. nt nr 080608 Version V2 2 MC 785 MP Client General Page 6 of 28 1 2 LMS RELAY MODULE extension Maximum of 4 modules using address jumper settings Type number 901 000212 Supply 12 VDC 1 2 VA Communication IPC network 3 wire OV SDA SCL Address jumpers Relay module 1 install J1 and J2 Relais 6 to 9 Relay module 2 install J1 and do not install J2 Relais 10 to 13 Relay module 3 install J2 and do not install J1 Relais 14 to 17 Relay module 4 do not install J1 and J2 Relais 18 to 21 Relays outputs RY1 Relay 6 Progr C NO NC 250Vac 10A non inductive RY2 Relay 7 Progr C NO 250Vac 10A non inductive RY3 Relay 8 Progr C NO 250Vac 10A non inductive RY4 Relay 9 Progr C NO 250Vac 10A non inductive Note Relay functions are programmable through the internal parameters settings 1 3 LMS Pt100 MODULE extension Maximum of 4 modules using address jumper settings Type number 901 000272 Supply gt 12 VDC 1 2 VA Communication IPC network 3 wire OV SDA SCL Address jumpers Pt100 module 1 install J1 and J2 and do not install J3 Sensor 4 to 7 Pt100 module 2 install J2 and do not install J1 and J3 Sensor 8 to 11 Pt100 module 3 install J1 and J2 and do not install J3 Sensor 12 to 15 Pt100 module 4 do not install J1 J2 and J3 Sensor 16 to 19 Pt100 inputs Temperature sensor 1 Progr Pt100 3 wire DIN IEC 751 Temperature sensor 2 Progr Pt100 3 wire DIN
31. on the display The left display now shows rhin By pushing no key for more than 15 seconds the controller returns to its normal operation mode If the number of pulses or hours is larger than can be displayed on the display OFL appears on the display to indicate overflow ow Manual day night setting By pushing the DAY or NIGHT key the controller can be manually set into day or night mode This is also done automatically when the start times are set in the parameters The LEDs and C next to the right display indicate the active day or night mode If the corresponding LED flashes rain is being detected Document nr 080608 Version V2 2 MC 785 MP Client General Page 12 of 28 o ae N Manual start drying By pushing the DAY and NIGHT keys simultaneously the function manual drying can be started o oO Info menu By pushing the UP and ON OFF keys simultaneously the info menu is activated meant for advanced users The Info menu can also be activated when the controller is switched off In the upper left display info is shown In the lower left display the item number is shown indicating which data appear in the right display By pushing the UP and DOWN keys a item number can be selected Appendix A contains a list of items and their meaning The day LED s mo so indicate the status of relay 1 7 By pushing the ON OFF key or 15 minutes choosing no other item the controller returns to i
32. or jumpers i shielded _ between line A and line B at min 0 5mm 2 both RS485 Network cable ends and max 1KM c OV sack j Digital in 1 v NO sign Programmable ov Analog output a 0 10Vde v Programmable fes S areen z 5 Pt100 3 wire al brown PAN Sensor 3 Programmable Es green Configuration Digital in z Pt100 3 wire brown PN sensor 2 Pt100 input as LCN FH Programmable reen Digital in green SaN punite o 100 3iwire CA J Programmable OV com TC extension bus to LMS relay LMS Pt100 and LMS RH Pt100 Document nr 080608 Version V2 2 MC 785 MP Client General Page 25 of 28 9 Dimensions Dimensions MC785 MP wall mount drawing 940024 i E aa a a oa a a os San SE SEES L t W i 7D Ai Sly Hr O Lo j Lto Ty LA h ARS i i 125 X amp a G P E of ods go 210 2 amp KA 213 ETY amp K gt Las aS 185 Document nr 080608 Version V2 2 MC 785 MP Clie
33. ose thermostat Wall mounting Housing Grey plastic Material Polystyrol 454h KG 2 natur BASF Dimensions 213 x 180 x 85mm whd Front Polycarbonate IP 44 Panel mounting Housing Steel sheet panel Material Steel sheet sprayed silver grey Dimensions 217 x 155 x 85mm whd Panel cutout min 208 x 146mm wh Front Polycarbonate IP 44 Temperature range Power supply 40 0 50 0 C at 0 1 C 230 VAC 50 60 Hz 10 5 Power consumption 9 VA Operation temperature 20 50 C Storage temperature 20 60 C Operation humidity Accuracy Note 10 90 relative humidity non condensing 0 5 from the range The software version number of the MC 785 MP controller can be retrieved using parameter P991 In order to make sure that multiple MC 785 MP controllers work together on a single alfa network it is recommended that MC 785 MP controllers with similar software version numbers should be used Controllers with different software version numbers may not work together properly Document nr 080608 Version V2 2 MC 785 MP Client General Page 4 of 28 Front Display 4 digit digital display meetw for measured temperature humidity 4 digit digital display set for setpoint setting 4 digit digital display dag tijd for hours counter real time clock with 7 day LEDs and measured internal RH value LEDs C measured value LED Readout of measurement in C on display RH meas
34. st Z minutes All evaporators off during defrost Blocks hot gas defrost with its own evaporators Hot gas defrost possible with own evaporators Delay time suction valve after defrost see also P308 z seconds Time runs from closing hot ga valve stop electric defrost Defrost interval on effective cooling time During defrost with their own evaporators both evaporators on cooling Attention These parameters had a different unit in software versions lower than 3 00 Document nr 080608 Version V2 2 MC 785 MP Client General Page 17 of 28 Nr Description Drying humidifying group Remark Assign analog output for air valve drying with P350 RH differential Maximal humidification time minutes Humidification interval hour Humidification interval on effective cooling time Differential between absolute humidity indoor and outdoor g kg where above drying with the valve will be used P band valve control g kg l tijd valve control minutes Humidifying 0 off 1 only at pre cooling 2 at pre cooling and storing Dry time minutes Minimum valve position Maximum valve position Drying type 1 only with the valve 2 only with cooling and heating 3 both automatically controlled 4 only with external dryer Cooling en humidifying at the same time 0 no 1 yes Ee Time between cooling and heating 0 200 minutes RH differential drying 0 100 0 Heating group Remark Assign
35. t the temperature of the heat sensor blow in sensor reaches the setpoint temperature The heating setpoint must be adjusted to its correct value Working method drying The controller s drying regulation function is activated through a manual start or when the inside RH value exceeds the RH setpoint plus the RH drying differential P563 Depending on the settings and the available measurements drying will take place for a certain time interval P558 if there is no inside RH measurement or until the inside RH is lower than the RH setpoint There will be no drying if the defrost cycle is still running or has been requested The method of drying and the settings that will be used can be adjusted using the internal parameters Relay functions fan on while cooling an evaporator and fan on during ventilation are active during drying If heating is desired too its settings have to be adjusted as well heating setpoint and parameters Working method humidification The controllers humidification regulator function is activated depending on the settings by a manual start because a lower RH value is measured inside than the RH setpoint minus the RH humidification differential P550 or based on a time interval if an inside RH measurement is not available The time interval can be selected optionally to be an elapsed clock time or an effective cooling time The time interval starts again after humidification has been concluded a
36. t yet supported P308 It is the suction control valve in accordance with P308 0 as described above 1 The evaporator suction valve is always controlled except during its hotgas defrost and P529 seconds thereafter Minimum adjustable temperature setpoint Maximum adjustable temperature setpoint Note The night temperature setpoint is this still important because a requested action or running cool action during the day night transition still runs or will be completed on the basis of the night temperature setpoint Document nr 080608 Version V2 2 MC 785 MP Client General Page 15 of 28 Nr Description Analog output group P 340 Analog output voltage OV at temperatuur as P350 3 P 341 Analog output voltage 10V at temperature as P350 3 P 350 Function analog output 0 10V 0 air valve drying 1 air valve cooling 2 heating 3 current temperature setpoint output Cooling air valve group Parameters described below only for P350 1 Minimum position air valve Maximum position air valve P band air valve cooling C l time air valve cooling minutes Offset set point air valve cooling C Minimum differential temperature between outdoor temp C and control temp at which air valve cooling is possible Maximum position air valve at outdoor temp below zero Maximum position air valve at mechanical cooling Air valve cooling during night offset 2 0 off 1 on 2 at day set po
37. t100 4 or RH 2 defect E16 Temperature sensor 16 LMS module 4 Pt100 1 defect E17 Temperature sensor 17 LMS module 4 Pt100 2 defect E18 Temperature sensor 18 LMS module 4 Pt100 3 or RH 1 defect E19 Temperature sensor 19 LMS module 4 Pt100 4 or RH 2 defect Temperature alarm A lo Absolute minimum temperature alarm A hi Absolute maximum temperature alarm rlo Relative minimum temperature alarm R hi Relative maximum temperature alarm Other alarms Al No hot gas defrost possible because there are no other MC 785 MP s in the network The alarm messages will appear on the temperature display upper left If a new alarm occurs than it will first be displayed continuously on display New alarms can be confirmed one by one with the UP or DOWN button If all new alarms are confirmed than the normal readout of the display will be shown alternating with the remaining alarms With the UP or DOWN key you can toggle between the remaining alarms Document nr 080608 Version V2 2 MC 785 MP Client General Page 21 of 28 7 Front view Front view MC 785 MP wall mounting drawing 040241w0 MC785 MP aid ox dg O Sper O7 ew it ex o ex C Om ec ef set RH ed Oo INKOEL BEWAARJ vy AAN vy 4 Front view MC 785 MP panel mounting drawing 041864w0 MC785 MP dg O Sper NJ OM C Oh ot o o e a INKOEL JBEWAAR J sty AA
38. ts normal operation mode 4 Adjusting internal parameters Push the PRG key If parameter P908 is not zero it is necessary to enter a password before it is possible to enter the parameter menu On the lower display appears code and in the upper display the password can be entered The first digit flashes and with the UP and DOWN key the value can be changed If the digit has the right value it can be confirmed by pushing the SETP key Now the next digit can be entered If the last digit has been confirmed the controller will check the code If this is the correct code the parameter menu will be active If the code isn t correct the controller will retun to it s normal operation mode If P908 is zero than the password check is skipped and de parameter menu is entered directly In the parameter mode appears P101 in the temperature display The is the parameter number which can be changed with the UP or DOWN key On the setpoint display appears the value from the parameter By pushing the SETP key and the UP or DOWN key simultaneously the value of this parameter can be changed By pushing the ON OFF key or if no key is being pushed for 30 seconds the controller will return to its normal operation mode Document nr 080608 Version V2 2 MC 785 MP Client General Page 13 of 28 Parameter table Nr Description Sensors group Function sensor 1 MC 785 MP 0 7 and 10 13 not present control sensor product se
39. up Cell may be used as standby cell if hot gas is needed 0 no 1 yes 0 Maximum time door open 0 92 minutes 5 Heating off when door is open 0 no 1 yes 1 Fan off when door is open 0 no 1 yes 1 Cooling off when door is open 0 no 1 yes 1 Humdifying off when door is open 0 no 1 yes 1 Log interval 1 120 minutes 5 Password 0000 not active 0000 9999 0000 Air valve is closed at rainfall 0 no 1 yes 1 analogue output becomes OVdc applicable if P350 0 or 1 and requires a rain detector connected to the controller or on the master in the network Drying off at open door 0 no 1 yes cooling associated to drying set off with P905 Start times group 00 00 24 00 hours min 00 00 24 00 hours min Start time night set point 24 00 not active Start time day set point 24 00 not active 00 00 24 00 hours min 00 00 24 00 hours min Start time night set point weekend 24 00 not active Start time day set point weekend 24 00 not active wn Yn Document nr 080608 Version V2 2 MC 785 MP Client General Page 19 of 28 Nr Description Relay assignment group Function solenoid valve to Relay 0 no Relay assigned 1 5 Relays 1 5 on controller 6 9 Relays 1 4 on LMS relays module 1 10 13 Relays 1 4 on LMS relays module 2 14 17 Relays 1 4 on LMS relays module 3 18 21 Relays 1 4 on LMS relays module 4 Function solenoid valve evaporator 2 to relay
40. ured LED Readout of measurement in RH on display a LED Defrosting active K LED Cooling active w LED Heat regulation active X LED Fan active relay functions fan on while cooling evaporator and or fan on during ventilation A Sper Blocking LED Blocking time active X LED Daytime mode active LED Night time mode active 07 LED Alarm active blinking iy LED Drying active abao LED Humidifying active C setp LED Readout setpoint value in C on display RH setp LED Readout setpoint value in RH on display 3 LED Automatic ventilation active Fan mode cooling automatic h LED Manual ventilation active continuous The defrosting active LED blinks when the controller wants to defrost or has requested defrosting but is still unable to do so The ventilator LED lights up when a fan is on This could be due to relay functions fan on while cooling an evaporator P401 P965 and P967 and or fan on during ventilation P402 to 412 P968 The daytime mode active or night time mode active LEDs next to the right display blink when rain is detected The alarm active LED lights up continuously during the time that the door is open door contact P902 controls the maximum time The drying active LED blinks when the controller wants to dry but is unable to do so because a defrost cycle is still running or has been requested The humidification active LED blinks when the control
41. with the parameters P 201 till P 219 If a temperature sensor shows 0 2 C to much than the according sensor offset must be lowered with 0 2 C 6 Alarms If a relay is configured P 971 as a alarm relay default relay 1 then normally the relay is closed and opens when an alarm occurs So there is also an alarm given when the supply voltage has been cut off During the LED alarm will flash on the front Depending of the internal parameters the controller will stop or continue If the LED Alarm is on continuously than the door contact is closed An alarm can be caused by one of the following messages Sensor failure E1 Temperature sensor 1 regelaar Sensor 1 defect E2 Temperature sensor 2 regelaar Sensor 2 defect E3 Temperature sensor 3 regelaar Sensor 3 defect E4 Temperature sensor 4 LMS module 1 Pt100 1 defect E5 Temperature sensor 5 LMS module 1 Pt100 2 defect E5 Temperature sensor 6 LMS module 1 Pt100 3 or RH 1 defect E6 Temperature sensor 7 LMS module 1 Pt100 4 or RH 2 defect E4 Temperature sensor 8 LMS module 2 Pt100 1 defect E5 Temperature sensor 9 LMS module 2 Pt100 2 defect E5 Temperature sensor 10 LMS module 2 Pt100 3 or RH 1 defect E6 Temperature sensor 11 LMS module 2 Pt100 4 or RH 2 defect E4 Temperature sensor 12 LMS module 3 Pt100 1 defect E5 Temperature sensor 13 LMS module 3 Pt100 2 defect E5 Temperature sensor 14 LMS module 3 Pt100 3 or RH 1 defect E6 Temperature sensor 15 LMS module 3 P

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