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1. B d EN SPP PP Line 4 Line Diagram A Temperature input Diagram B Current input A alarm ALL output B EMI filter only when the condensation control is used with phase cut off C module for control of external fans optional T1 unit power transformer T2 alarm power transformer D relay RLO1 for control of first compressor E relay RLO2 for control of second compressor G relay RLO3 for control of third compressor H relay RLO4 for control of fourth compressor F Triac for direct control of condensing fans up to 2A TK output TTL TTL serial port for connection to Copy Card or PC Note Condensing fans can be controlled using the direct output terminal no 4 or the external fan module labelled C in the figure connected to output TK1 The use of one method automatically excludes the other EWCM 400 User Manual 6 41 EWCM 415 wiring diagram with temperature and current input foccoollloool Y2. o Line 66 Line Diagram A Temperature input Diagram B Current input T1 unit power transformer D relay RLO1 for control of first compressor E relay RLO2 for control of second compressor G relay RLO3 for control of third compressor H relay RLO4 for control of fourth compressor F relay RLO5 for alarm control TTL TTL serial port for connection to Copy Card or PC EWCM 418 wiring diagram with temperature and current input focooollloool p fooooollloool SS 4 Line Line Diagram A Temperature input Diagram B Current input T1 unit power transformer D relay RLO1 for control of first compressor E relay RLO2 for control of second compressor G relay RLO3 for control of third compressor H relay RLO4 for control of fourth compressor F relay RLO5 for alarm control TTL TTL serial port for connection to Copy Car
3. Some parts of the text are highlighted in the column of callouts by means of icons that can have the following meanings Warning It draws the attention on a specific aspect of the topic that users should take into account Tip It provides a hint that helps users to understand and use the information on the topic described Attention It highlights information that is essential to preserve the integralness of the system and ensure the safety of people equipment data etc These sections must always be read prior to use EWCM 400 User Manual 4 41 2 INTRODUCTION The EWCM 400 Family is a series of compact electronic units designed to control compressor sets that is highly reliable versatile and easy to use The EWCM 400 family consists of three models EWCM 412 EWCM 415 EWCM 418 All units control up to 4 ordinary compressors or 2 compressors with capacity steps 2 analogue temperature or pressure inputs to control intake and condensation 7digital inputs for control of thermal alarms low and high pressure alarms and generic shutdown alarms on compressors The three versions vary according to the type of outputs used as shown in the table below 12 24 Output for Analogue ner Vac Triac output P output Serial Compressor Analogue Digital Alarm external module Unit Triac for condensing for port relay inputs inputs relay with condensing alarm fans condensing TTL fans outpu
4. switches to manual EWCM 400 User Manual 29 41 Digital alarms CODE RESOURC SIGNAL E 1D2 Alarm compressor 2 H31 0 1D2 Alarm compressor 2 H31 1 Alarm compressor 3 H31 0 3 H31 1 Alarm compressor 4 H31 0 a l E13 E13 E23 E23 ID3 Alarm compressor E33 33 Alarm compressor 4 H31 1 DESCRIPTION COMP1 LOADS SHUT DOWN COMP4 OFF BY PASS RESET FAN Not active while 403 time is counted from compressor start up Not active while 403 time is counted from compressor start up Not active while A03 time is counted from compressor start up Not active while 403 time is counted from compressor start up Not active while A03 time is counted from compressor start up Not active while 403 time is counted from compressor start up The number of compressors running when an alarm is generated probe ST1 varies according to the value set for parameter H32 If an alarm occurs probe ST2 the fan runs at the maximum speed if at least one compressor is on The following tables summarize the alarms They are divided into two groups digital and analogue TABLE OF DIGITAL ALARMS Name of alarm High pressure alarm Low pressure alarm Protection of compressor 1 2 3 4 Bypass trigger event Bypass time Number alarm events hour Not present Compressor start up p EWCM 400 User Manual 30 41 Reset is automatic if number of events per
5. Number of low pressure events hour on analogue input Used to set the number of low pressure analogue alarm events per hour If the number is exceeded the alarm is switched from automatic to manual reset Number of analogue input high pressure events hour Used to set the number of high pressure analogue alarm events per hour If the number is exceeded the alarm is switched from automatic to manual reset Number of digital input high pressure events hour Used to set the number of high pressure digital alarm events per hour If the number is exceeded the alarm is switched from automatic to manual reset 8 1 3 Compressor parameters OFF ON safety time The minimum period of time that must elapse between turning off the compressor and turning it on again It is expressed in tens of seconds ON ON safety time The minimum period of time that must elapse between two subsequent switch ons of the compressor It is expressed in tens of seconds Interval between compressor 1 compressor 2 start up step Used to set a delay between one compressor start up and the next Interval between compressor 1 compressor 2 shut down step Used to set a delay between one compressor shut down and the next EWCM 400 User Manual 25 41 F01 F02 F03 F04 FOS F06 F07 F08 F09 F10 F11 F12 F13 F14 F15 F16 F17 Configuration CNF parameter table 8 1 4 Fan parameters Fan output configuration 0 proportional TK
6. A05 A06 A07 A08 A09 A10 A11 A12 A13 c01 c02 c03 c04 Compressor start up sequence 0 balancing of operating hours recommended for ordinary compressors 1 fixed sequence MANDATORY for compressors with capacity steps If H31 1 the temperature control alarm on compressor 1 switches all the compressor loads off generally speaking the alarm associated to digital input N switches loads N N 1 N 2 off see Alarm section Number of compressors ON with ST1 error Used to set the number of compressors that should continue running when a probe ST1 error occurs Selection of degrees C or F 0 degrees C 1 degrees F Customer code 1 This is a number from 0 to 999 that the user can set for internal use Customer code 2 This is a number from 0 to 999 that the user can set for internal use Polarity of alarm relay 0 the output is active contact closed when an alarm is active and the machine is off 1 the contact is open with the same conditions If H36 0 the contact is closed as soon as the unit is started for the whole duration of the lamp test Cooling Heating regulation mode 0 Cooling mode regulation 1 Heating mode regulation Enable output alarms in off mode 0 inactive alarm output in OFF or stand by mode 1 active alarm mode in OFF or stand by mode Configuration of optional card 0 N A 1 4 20mA fan speed output 2 0 10V fan speed output 8 1 2 Alarm parameter
7. FO7__ Silentspeed SS S o or F08 09 10 80 Fi 1 2 80 Proportional band 2 0 25 5 kPa 100 Cut off differential 3 0 25 5 kPa 100 1 Cut off bypass time 0 255 100 7 Cut off hysteresis 0 25 5 kPa 100 010 i 50 0 80 0 kPa 100 Maximum fan speed pressure set point Pre ventilation 0 0 255 Way to reach maximum pick up speed Maximum pickup speed 10 o 100 EWCM 400 User Manual 27 41 Alarms Number of events per hour S 9 DIAGNOSTICS EWCM units can perform full system diagnostics by reporting a series of alarms Alarms can be activated and reset using parameters A01 A13 Some alarms can be de activated for a period of time determined by the relative parameter Units are also able to count the number of events for specific alarms if the number of alarms in the last hour exceeds the threshold set with parameter A04 the alarm switches from automatic to manual reset mode Alarms are sampled every 225 seconds If parameter A04 0 automatic resetting is inactive If this is the case resetting can only be performed manually Example if the number of events is set to 3 the alarm must last from 2 225 seconds to 3 225 seconds so that is can switch from automatic to manual reset Sampling A automatic reset M manual reset Alarm alarm Sampling sampling Time time If an alarm is triggered more than once in one sampli
8. 2mA 22mA if configured as current input ST1 probe fault Alarm compressor 1 H31 0 compressor 1 H31 1 a a id i aan i i l HEN i FF OFF FF FF FF FF OFF FF OFF FF FF FF FF FAN OFF OFF OFF BY PASS Not active while A01 time is counted from compressor start up Deactivated Deactivated when temperature pressure is above A09 A10 Alarm is inactive while A08 time is counted from compressor start up Not active while 403 time is counted from compressor start up Not active while 403 time is counted from compressor start up RESET Reset is automatic if number of events per when pressure is below A06 A07 hour is equal to va set in parameter A If exceeded it switches to manual Reset is automatic number of events p hour is equal to va ue 13 if er ue set in parameter A02 If exceeded it switches to manual Reset is automatic i number of events p hour is equal to va set in parameter A If exceeded it switches to manual Reset is automatic i number of events p hour is equal to va set in parameter A If exceeded it switches to manual Reset is automatic number of events p hour is equal to va if er ue set in parameter A04 If exceeded it switches to manual Reset is automatic number of events p hour is equal to va if er ue set in parameter A04 If exceeded it
9. 41 6 3 Condensing fan control Control of the condensing fan depends on condensation pressure The controller is active if ST2 is present if not the fan goes ON and OFF in response to the compressors Fan control may be carried out independently of the compressor or when a request is received from the compressor The operating mode is set with parameter F05 Parameter Value 0 1 F05 If compressor is off the fan is off Condensation control is carried out independently of compressor If the proportional control requests fan cut off this cut off may be excluded for a period of time equal to F12 from when the compressor is turned on If the controller requests cut off during this period the fan will run at minimum speed The fan control output may be Outputs Model Description of output signal Triac output for condensing fans EWCM 412 Variable voltage value see fan diagram Output for condensing fan PWM signal for external module variable voltage value corresponds to EWCM 412 external module voltage supplied by module Analogue output for condensing EWCM 418 Analogue signal value see fan diagram fans If parameter FO5 is set to 1 condensation control depends on condensation pressure and how the following parameters are set Silent speed A minimum maximum and silent speed that corresponds to a silent operating mode for example at night time and a proportional band
10. PU UG AAA E A TA A 16 r aE T E I iveveaneiveetscosbenesbestcn 18 Polarity of digital Mputs iii 7 SYSTEM CONFIGURATION oia 15 PU of aiii ii ia 8 T A MA 15 Table of parameters Probe O A ii 38 Technical data cmmaaaraaanaciocicocorrrrmirmess sos Programming parameters and displaying unit TECHNICAL DATA ccciciiniiicn a keen sneen kuske kranse alle status menu levels 12 TEMPERATURE CONTROL FUNCTIONS 18 Proportional OF cesssessssssssssssssssssesssssssssssssssssssesssssssseeseesee 16 A SEES SEE SESSl 31 38 R U Recommended USC eesesssssssssssssssssssssssssssesssssssssssssssssesse 33 UL approvals svarene Registration of working hours 22 Units of measurement Relays RL u v 8 USE OF DOTE poniai RESPONSIBILITIES AND RESIDUAL RISKS 34 USE OF MANUAL ai taa 3 S USER INTERFACE vs ssscsecsassiessscsecoesnssnssasadverseteecitvasnnsadseass 11 Safety ENT A 15 V Selection of operating Mode 18 Ventilation Chart iia 20 DAL QUU aiii in 9 Ww SKONE A TA 20 Wiring d dgraM ssssssssssssssrsssssrssssnsesrsnsenrsnsenrensenen ene 5 O II 32 Wiring diagrams for EWCM 400 devices 5 ans fore EWCM 400 User Manual nj de 2006 3 suce ERE To menr Cod 9MA10003
11. This parameter determines the start sequence of compressors as described below H31 0 Compressors are started according to operating hours balancing of operating hours H31 1 The first compressor to be started is the one with the lowest value followed by the compressor or capacity step with the highest value fixed sequence Compressor start stop sequence If H31 0 the first compressor to be started is the one with the lowest number of operating hours unless an active compressor block alarm is present see Alarms table e safety timing in progress If H31 0 the first compressor to be switched off is the one with the highest number of operating hours If H31 1 e the compressor capacity step with the highest value is only started if the compressor with the lowest value is already running except when the compressor with the lowest value is in alarm mode e The compressor with the lowest value is only switched off if all the compressors with the highest values are already off 5 1 3 Compressor start up and shut down operations must comply with the safety times set by the user using the parameters described below Compressor timing A safety period must elapse between the start up and shut down of a compressor compressor OFF ON safety time controlled by parameter C07 This delay also applies to start up of the EWCM 400 unit A safety period must elapse between two subsequent start up operations compresso
12. hour is equal to value set in parameter A04 If exceeded it switches to manual Reset is automatic if number of events per hour is equal to value set in parameter A04 If exceeded it switches to manual Reset is automatic if number of events per hour is equal to value set in parameter A04 If exceeded it switches to manual Reset is automatic if number of events per hour is equal to value set in parameter A04 If exceeded it switches to manual Reset is automatic if number of events per hour is equal to value set in parameter A04 If exceeded it switches to manual Reset is automatic if number of events per hour is equal to value set in parameter A04 If exceeded it switches to manual TABLE OF ANALOGUE ALARMS Analogue Name of alarm Bypass Trigger SET Hysteresi Number Control time POINT s alarm probe alarms events hour pressure alarm present negative pressure alarm start up positive EWCM 400 User Manual 31 41 Transformer 10 TECHNICAL DATA 10 1 Technical data PO Typical Min Max Operating ambient temperature 60 eC Operating ambient humidity non condensing Ambient storage temperature Ambient storage humidity non condensing 10 2 Electromechanical data Analogue output 0 10 V e For the direct management of an inverter module only for EWCM 4 20mA 418 e 1 TRIAC output non optic insulation 500 mA max Analogue inputs 1 4 20 mA transducer 1 configu
13. in accordance with the instructions supplied and that no parts subject to dangerous voltage are accessible to users during ordinary operation The unit must be resistant to water and dust depending on the application and be accessible only by means of tools This unit is suitable to be fitted on domestic appliances and or equivalent units employed for air conditioning In accordance with reference standard this unit is classified as Electronic automatic control suited to be installed in standalone configuration or to be mounted on other units in relation to its manufacturing characteristics e sa Type 1 control unit in relation to its operating characteristics manufacturing tolerances and derivatives As Class 2 device in relation to its resistance to electric shocks As Class A device in relation to its class and the structure of its software 11 2 Forbidden use The use of the unit for applications other than those described is forbidden It is worth remembering that the supplied relay contacts are functional and may be subject to failures as the electronics controlling them may short circuit these relays or leave them open For this reason it is advisable to install the protection devices recommended in product specifications or other equivalent devices on the outside of the unit EWCM 400 User Manual 34 41 12 RESPONSIBILITIES AND RESIDUAL RISKS Eliwell shall not be liable for any damages deriving from e install
14. output 1 ON OFF TK output without capacity step 2 ON OFF TK output in response to request from compressor Fan pick up time Time the fan runs at maximum speed F17 after a restart pick up Fan phase shift Used to adapt output to different types of fans Duration of Triac activation impulse Used to vary the length of the Triac impulse If external DRV control boards are used set F04 30 Operation in response to compressor request 0 if all the compressors are off and fan is off 1 if the condensation control is carried out independently from the compressors Minimum speed Minimum value for proportional regulation of fans It is expressed as a percentage from 0 to 100 of the maximum permitted voltage Silent speed Maximum value for proportional regulation of fans It is expressed as a percentage from 0 to 100 of the maximum permitted voltage Minimum fan speed pressure set point Pressure condensation value that corresponds to the minimum speed Proportional band Pressure differential corresponding to a change from minimum to maximum fan speed Cut off differential Condensation pressure differential within which fan continues at minimum speed Cut off hysteresis Condensation pressure differential for fan shut down Cut off bypass time Used to select a delay between activation of the cut off function and fan start up It is expressed in seconds Maximum speed Used to set a speed step for a specific pressure
15. value Maximum fan speed pressure set point Condensation pressure value that corresponds to the fan speed set with parameter F13 Pre ventilation Used to set a pre ventilation time before compressor start up Way to reach maximum pick up speed Specifies how to reach the maximum pick up speed F17 0 maximum speed is reached immediately 1 maximum speed is reached proportionally at the end of the time set for parameter F02 Maximum pickup speed Used to set the maximum pick up speed as a percentage 8 2 Table of parameters The following table summarizes all the EWCM 400 parameters CONFIGURATION PARAMETERS Par Description Value Limits Unit Set point 45 H03 H02 C kPa 10 Maximum set point C 10 kPa 1 Minimum set point C 10 kPa 1 Regulation band ST1 configuration ST2 configuration Pressure top scale value ST1 H08 Pressure top scale value ST2 Pressure bottom scale value ST1 Pressure bottom scale value ST2 Polarity ID1 Polarity ID2 Polarity ID3 Polarity ID4 Polarity ID5 Polarity ID6 Polarity ID7 Configuration of polarity compressor 1 Configuration of polarity compressor 2 Configuration of polarity compressor 3 Configuration of polarity compressor 4 Configuration of serial protocol Offset ST1 Offset ST2 Mains frequency Family serial address EWCM 400 User Manual 26 41 Alarm ALL parameter table Compressor CP parameter table Fan FAN parameter table Device se
16. 2 but with the following differences EWCM 415 EM4A150350 1 relay output for additional compressors for a total of 5 outputs NOT PRESENT not equipped with Triac and PWM outputs Same as EWCM 415 but with the following differences la Ed not equipped with 4 20mA 0 10V inverter output 230V 12A 5 6 VA VDE transformer Parameter programming key bd voltage inputs and outputs LC filter mains filter recommended for applications with fan speed modulation NTC temperature probe 103AT 1 5 m plastic PROBE NTC temperature probe 6X40 1 5m SILICON metal NTC temperature probe 6X40 3m SILICON metal EWPA 030 4 pressure transducer 20mA 0 30bar RESORT oes EWPA 007 pressure transducer 4 20mA 5 8bar Technical data power supply 12A 420V casing IP55 Technical data LD320420T1S00 power supply 20A 420V THREE PHASE FAN e casing IP55 CONTROLLER DRV 300 6 Technical data power supply 12A 420V casing IP22 Technical data LD320420T1G00 power supply 20A 420V casing IP22 For p n part numbers gt see instructions FAN MODULES CFS 6 sheet 8FI40014 CFS Fan Speed Modules GB I E D F Open board to switch condensing fans ON OFF The card is controlled by a PWM signal FAN MODULE CE REL MW991300 Characteristics of this model on board relay maximum current of 6A Faston connectors Param Manager SLPO5XX000100 Software used to control unit from a PC P
17. 4 2 Condensing fan Triac TK gt 412 models only The TK output can be configured as described in par 5 2 1 The parameter is displayed on all models but only valid for EWCM 412 3 4 3 Fan module control TK1 gt 412 models only e TK1 Low voltage output PWM for control of external modules used to drive fans for EWCM 412 only The TK output can be configured as described in par 5 2 1 The parameter is displayed on all models but only valid for EWCM 412 3 5 Condensing fan analogue output gt 418 models only REAR VIEW foooool ooo IL Lac TTE The unit has a 0 10V 4 20mA analogue output the mode is parameter selectable for direct control of inverter modules EWCM 400 User Manual 9 41 Connecting the Copy Card Copying the parameter map Downloading the parameter map 3 6 Serial output The unit has an asynchronous serial output that enables the unit to be connected to a PC via an interface module Parameter H22 is used to select the type of communication protocol e H22 0 Televis protocol e H22 1 Modbus protocol 3 6 1 Copy Card The same connector for serial connection can also be used to connect the Copy Card for quick programming of the unit parameters The connection diagram is shown here below et A Copy card B Connection using TTL cable C serial communication channel D EWCM 400 rear view The parameter map stored in the internal memory
18. Clinterface2150 PCI5A3000000 Param Manager Interface module also called PCI Interface module for multipoint ModBus 1 Needed for all models Wiring diagram for DRV modules 2 Needed for model EWCM 418 3 Used as alternative to pressure transducer for inlet inputs Needed for condensation input Recommended for condensation input as an alternative to temperature probe 6 As alternative to other fan control modules 7 Other lengths available We recommend using a 1 8 m long cable The maximum length varies according to data transmission speed 8 Other lengths available We recommend using a 0 3 m long cable Longer lengths may be used depending on electromagnetic disturbance in the environment GENERAL NOTES COHV and COLV cables are not required if they are supplied directly by the manufacturer Eliwell also offers several types of NTC probes that vary according to the type or length of cable PVC or silicone installed NOTE EWCM 400 must be used with a transformer cabling and relative probes 14 1 CFS modules CFS series units are optional modules that when connected to main control modules allow the speed of single phase fans to be adjusted with currents ranging from 2 Ato 9 A They have an open board format and several different models are available gt see instructions sheet 8FI140014 CFS Fan Speed Modules GB I E D F 14 2 DRV modules If you use a DRV three phase fan module refer to t
19. STAND BY LED goes on or off according to the status that has been selected press and release both buttons the buttons have to be pressed for less than 2 seconds to display StA and reset the status as in point 2 hold both buttons down buttons have to be held down for more than 2 seconds to quit the menu Stand by StA SN A INS fo Attention when the STAND BY LED is turned off the instrument does not regulate the outputs In this phase the temperature pressure values detected by the device are displayed 4 3 Programming parameters and displaying unit status menu levels Access to the parameters and machine inputs is structured in sublevels that can be accessed by pressing the mode and on off buttons simultaneously see above Each menu level is identified by a mnemonic code which appears on the display It is structured as shown in the following diagram see following page EWCM 400 User Manual 13 41 Lv vL enuen JSN 007 WDMI HO LHD Jossesdwo5 Say sunoy jasay 1HO Uonelado jo sinoy PHO LHO JossaJdwoy NJLA piomssed SSd piomssed HO Npeul WOMA uo aape WOMI wis qpuejs 7P pues wouj peay IN peo uo aM Tiv weed wey Jos SioJoueled suolouny ule ENDEN SER anjen Jojawieied Jojowejed uy4 dd JajaweJed Jossalduoo SN LA Jajaweled gt SN LA JAJaWeJeg uy Jajoweled uojeinByuog 1Vd SI9JQuIeJed Lo Indu jo apog PI sindu ey61g di s
20. ale value ST2 Used to set a value that corresponds to a current of 20mA Polarity ID1 Polarity ID2 Polarity ID3 Polarity ID4 Polarity IDS Polarity ID6 Polarity ID7 0 Active with closed contact 1 Active with open contact Configuration of polarity for compressor 1 Configuration of polarity for compressor 2 Configuration of polarity for compressor 3 Configuration of polarity for compressor 4 0 Closed relay for active output 1 Closed relay for inactive output Configuration of serial protocol 0 Televis protocol 1 Modbus protocol Offset ST1 Offset ST2 This parameter can be used to compensate for the error that may occur between the temperature or pressure reading and the actual value Mains frequency 0 mains frequency 50 Hz 1 mains frequency 60 Hz Family serial address Device serial address Used to select the serial address Both normally set to 0 User password Can be used to enter the password required to access second level parameters 0 Password deactivated all parameters can be viewed gt 0 Password activated Position of decimal point 0 decimal point not present 1 decimal point after first decimal digit i e 13 5 2 decimal point after second decimal digit i e 1 35 Number of compressors 1 1 compressor 2 2 compressors or 2 steps 3 3 compressors or 3 steps 4 4 compressors or 4 steps H31 H32 H33 H34 H35 H36 H37 H38 H39 A01 A02 A03 A04
21. ameters A On eer we mr Lo AAA select the relevant item in the SCF menu press and release both buttons the buttons have to be pressed for less than 2 seconds UL appears on the display press and release the down button dL appears on the display press and release both buttons the buttons have to be pressed for less than 2 seconds y appears on the display press and release both buttons the buttons have to be pressed for less than 2 seconds downloading can be effected in 2 different ways o when downloading the display is unsteady for 1 second and Occ then appears on the display o If downloading fails Err immediately appears on the display in both cases to quit hold down both buttons buttons have to be held down for more than 2 seconds y appears on the display hold down both buttons buttons have to be held down for more than 2 seconds dL appears on the display hold down both buttons buttons have to be held down for more than 2 seconds SCF appears on the display hold down both buttons buttons have to be held down for more than 2 seconds go back to the main level once the operation has been completed the Copy Card must be disconnected after modifying the configuration parameters we strongly recommend that you switch the instrument off and on again If the operation is successful Occ appears on the display After completing the op
22. ation use other than that prescribed and in particular that which does not comply with safety standards anticipated by regulations and or those given herein use on boards which do not guarantee adequate protection against electric shock water or dust under the conditions of assembly applied use on boards which allow access to dangerous parts without the use of tools e tampering with and or alteration of the products e installation use on boards not complying with the standards and provisions of current legislation EWCM 400 User Manual 35 41 13 DISCLAIMER This document is exclusive property of Eliwell Controls srl and cannot be reproduced and circulated unless expressly authorized by Eliwell Controls srl Although all possible measures have been taken by Eliwell Controls srl l to guarantee the accuracy of this document it does not accept any responsibility arising out of its use EWCM 400 User Manual 36 41 14 APPENDIX Description Name Compressor set controller power supply 12V 50 60Hz power 5VA IP65 rated front protection plastic casing 32x74 mm panel holes 29x71 mm 1 NTC or 4 20mA analogue input for inlet 1 4 20mA analogue input for EWEM 412 EM4A150300 condensation 7 digital inputs for alarms 4 relay outputs for compressors 1 TTL serial port 1 Triac output with phase step 1 12 24Vac Triac output for alarm management 1 PWM output for connection to fan modules Same as EWCM 41
23. d or PC EXP analogue output for condensing fans EWCM 400 User Manual 7 41 Analogue inputs Configuration table for analogue inputs Decimal point value Digital inputs Polarity of digital inputs Description of digital inputs Outputs The unit is configured according to the values of the parameters for the inputs and outputs 3 2 Configuration of analogue inputs There are 2 analogue inputs input ST1 for inlet configurable for NTC probe or 4 20mA signal ST2 input for condensation 4 20mA signal The inputs can be configured as in the following table Configuration of aba analogue input ST1 Configuration of analogue input ST2 No probe Temperature input Pressure input H06 Not defined No probe Pressure input If the ST1 input is defined as a 4 20mA input the following parameters are significant H07 the top scale value for input ST1 is used to set a value that corresponds to a current of 4mA H09 the bottom scale value for input ST1 is used to set a value that corresponds to a current of 20mA H29 number of decimal places it moves the point on these values main display menu tP t01 and parameters HO7 HO09 Note with HO5 set to 1 ST1 input configured as temperature input parameter H29 1 must be set If this is the case display resolution main display in menu tP t01 is always with a decimal point or whole number if F reading is set Inp
24. d this button down 1 5 seconds for direct access to the control set point When the key is pressed the letters SET appear on the displays followed by the value set by the regulation band corresponding to parameter H01 Press once to reset all inactive alarms that can be reset manually In Menu mode this button becomes the SCROLL DOWN or DOWN value decrease button The band and set buttons are pressed at the same time If you press both buttons at the same time and then release them within 2 seconds you go down one level in the display menu If you press both buttons for more than 2 seconds you move one level up If the last level of a menu is displayed press the button and release it within two seconds to go up one level 4 1 1 Display In Normal mode the unit displays e the control temperature in C resolution expressed in tenths of a degree or in F whole number e the control pressure with resolution specified by parameter H29 the alarm code if at least one is active If several alarms are active the Alarm Table is displayed for one second In Menu mode displaying varies according it the position Special labels and codes are used to help users identify the function that has been set Decimal point when displaying the operating hours it indicates that the value must be multiplied x 100 4 1 2 LEDs LED 1 compressor 1 ON if compressor 1 is active OFF if compressor 1 is inactive BLINK
25. da 32 10 4 Standards 10 5 Approvals ARTUR A A IN O A NATA 34 VAT Recommended U E A a ouigaacbecaaaaeavoaealwescbesenduaeveavsbetasiveood rao p is 34 T12 EOL A SAUS A Ed TY 34 12 Responsibilities and residual sk ocn A RAZA 35 EWCM 400 User Manual 2 41 39 DISCLAIM GC lek A A EN AER a ai Ra 36 E A A A RTE OnE 37 TA CES Modulo OTIS 38 PA A NN 38 A RAR 39 14 4 Copy AN 39 VADO A o A 39 14 6 Param Manager A 39 a es a oe eaters O tien AAs ee ets ta et te teh mera tt 40 EWCM 400 User Manual 3 41 Callouts Cross references Highlights 1 USE OF MANUAL To facilitate the use and review of the manual customers may use the following aids Callout column The left section of the text contains callouts on the topics described to allow the user to rapidly find the desired information Cross references All the words in italics are listed in the analytical index along with the page where they are described more in detail Example supposing the user is looking for the following The activation of an alarm stops the compressors The text in italics indicates that section Compressors in the analytical index provides information on the page where compressors are described in greater detail If the online Help on the PC is used the customer may use the words in italics as hyperlinks automatic links that can be activated with a mouse click to view the single sections of the manual and scroll through the document
26. eeeaeceeseneeteseateees 13 5 A a AAA A e Sater eave A A A Martone se 5 1 Compressors iii aia 5 1 1 Compressor confiSUr ON arman done Adri oneroso ODIO do dune UU On EAE AA oda a leconce NENESE ANS 5 1 2 Compressor start stop sequence 52135 COMES ada 5 2 Condensing O e ea as ea do RA 5 2 1 Configuration of condensing fan ae aa BY 5 3 PAETAE OIDU aE a Neste erie Une R STENEDE RPE T T T BENE Are er ERE SET H RTE RER 6 Temperature control functions 6 1 Control of compressors cooling direct controller es eesessesseeceesneesecneesecneesecaeesesscseecscsuecscsuecsesseeaeeaeeeeaeecsesecsesneesecnes 19 62 Heating Inverse controler ci cosscscavcsseuctvisvcucevesersen couves ce vesedenscaveseeten souves ce vebeeucaWevets ele ek ce vebueuenveuvessceveseeverveuvesee 19 6 3 Condensing tan control IA i 21 F FUNCTION Seter E epee ria ieee re A ARS 23 7 1 Registration f working KOUFS 3 cccesezcaee coascussdcdesecesssssesassdebbenustessencratesesneatelabeasndt asoida a a ia e AiE 23 83 Para NVM noi 24 8 1 DeSCrIPLION of parameters sisal sinker nederen EEN a ia a A A aaRS 24 8 1 1 Configuration parameters oda 24 8 12 Alarm AR II A E E TR RON 25 8 1 3 COMPpressor parameter oa al si 25 8 1 4 A E E IR RA EEN NI 26 8 2 Table of Parameters miii dd dd Ad dE AI 26 AAA A A E E N 28 9 1 ICONS A AAA A A ETA AAA AA LAA AAN 28 TETERA o O 32 VOLT A A A obastaigionratetncaietes 32 10 2 Electromechanical data ii iia 32 10 3 DIO ON Si A A AAA A A A A
27. eliell EWCM 400 412 415 418 Controllers for Compressor Pack Units CONTENTS t US OL Maa A rl Mn EMRE ern nna aa 4 P REN ls A EA O NET 5 Be A A A oe A te each 6 3 1 Wiring diagrams for EWCM 400 devices uu cessesssssecsesssesseseesecesssssscsncesecneesesessssussscsucsecsuecsssueeseeaecueeaeesesaseaeecsesueeecauessesneeseenss 6 3 2 Configuration of analogue INPULS 0 eesceesesceecneesecneesecncccscssecscsuecsesucesecucesecaessecacsessseseaseesecucesecaeesecaecaeeaecaeeceaeensesteeseeneeeees 8 3 3 Configuration of digital INPUtS oe eesessessececnseseeseeseesecsscssecsesuccsccucesecucesecuscsecaesscsuecsessessecueesecaeeseeaeeseeaseneenseauecsecueeeeeneesees 8 3 4 Configuration Of OUIPUES cdi 8 3 4 1 Relays Riiie 3 4 2 Condensing fan Triac TK gt 412 models only ze 3 4 3 Fan module control TK1 gt 412 models OmLy eessessessesssecsssseeseessecsesssecuccsecsensccsecuccasesuccasssscsuecsesuccacsssesscsuecseeasessccuecaeenseseccucesessecuecuesaceaeseceeeeaeeneeeeeees 3 5 Condensing fan analogue output gt 418 models OMY eesesseeseseecneesecseesecseesesseeseecseseecscsueesecuecaeesesaecaeesecauecsesnersesneesees 9 3 6 Serial output ae a 3 6 1 COPY Car A A EN 3 7 Physical quantities and units of measurement 3 7 1 Units of measurement 4 User interface 4 1 4 1 1 4 1 2 4 2 4 3 Programming parameters and displaying unit status menu leVels ee eseeesesseseeeeseseeseseeeeseceeteseseesesee
28. eration the Copy Card must be disconnected We strongly recommend that you switch the unit off and on again each time configuration parameters are changed Once downloading or uploading has been confirmed select y to continue or n to cancel the operation 3 7 Physical quantities and units of measurement 3 7 1 Units of measurement Control temperature can be displayed in C with decimal point F without decimal point See paragraph 5 2 Setting the decimal point To convert from one unit of measurement to the other F C x 9 5 32 The unit of measurement can be set using parameter H33 H33 Unit of measurement Degrees C 1 Degrees F EWCM 400 User Manual 11 41 Keyboard Band Alarm Set Reset y set Band Set combination 4 USER INTERFACE The interface consisting of the instrument keypad can be used to perform all the operations required to operate the instrument including Setting the operating mode Managing alarm situations Monitoring the state of resources So ivel 4 1 Buttons Sets the regulation band Hold this button down 2 seconds for direct access to the regulation band When the key is pressed the letters BND appear on the displays followed by the value set by the regulation band corresponding to parameter H04 In Menu mode this button becomes the SCROLL UP or UP value increase button Sets the control set point Hol
29. he following diagram EWCM 400 TF TF transformer DRV three phase fan controller EWCM 400 EWCM family controller EWCM 400 User Manual 38 41 Copy Card 14 3 Transformer 14 4 Copy Card This device can be used to upload and download the EWCM 400 parameter map Copy Card view The following conventions apply UPLOAD involves copying parameters from a unit to the COPYCARD DOWNLOAD involves copying the parameters from the COPY CARD to a unit 14 5 Probes C Pressure probe EWPA007 D NTC temperature probe 14 6 Param Manager PCInterface2150 If you have a Personal Computer running Windows 95 or higher Param Manager software the PCI 2150 interface module and suitable wiring you can control all the EWCM 400 parameters from a PC gt see instruction sheet 91543083 PCInterface 2150 series 5 languages gt see user manual 8MA10006 Param Manager GB EWCM 400 User Manual 39 41 15 ANALITIC INDEX A Alarm ALL parameter table ces 26 A erdyendserk sg ng seg es Ene Ks piii 16 Alarm parameters A cess savesutconcnsecevets 24 Alarm SeU A nai ia 11 PO 3 1 E ass 27 Analogue alarms 2 222 30 Analogue PAPES cc 7 A O covecuss hase rdl 36 AO asia 32 B Balancing of operating hours sees aser 15 BIG ac dia 11 Band Set COMMDINDTION ciiieiscsccccciedianes cdeecsabeecestssvenees 11 BORIS ses OOOO 11 Cc CONUS ceisscaciesse
30. if safety timing is in progress Compressor 2 or capacity step LED ON if compressor capacity step is on OFF if compressor capacity step is off BLINK if safety timing is in progress EWCM 400 User Manual 12 41 Modifying status of On Off device Compressor 3 or capacity step LED ON if compressor capacity step is on OFF if compressor capacity step is off BLINK if safety timing is in progress Compressor 4 or capacity step LED ON if compressor capacity step is on OFF if compressor capacity step is off BLINK if safety timing is in progress Menu LED BLINK if the menu levels are being displayed OFF in Normal display mode STAND BY LED ON if the unit is operating OFF if the unit is in STAND BY mode 4 2 Device status The EWCM 400 device status can be selected using the digital input using the function programming menu The sequence of commands to be performed to modify EWCM 400 status using the keyboard menu is shown below il EWCM attivo On EWCM non attivo Off press and release both buttons within 2 seconds to access the menu go to StA in the menu using the SCROLL DOWN and SCROLL UP buttons press and release both buttons within 2 seconds On appears on the display select the status On Off using the SCROLL DOWN and SCROLL UP buttons once the required status has been displayed press and release both buttons within 2 seconds the
31. indu anbojeuy 203 103 sndu Jo apo anjea pueg uoneinBoy puq pueg uneje annoy anjea yulod jas Jas Julod jos aqoid uoyenbay E ananas nuaw BY SMOYS WeIZeIP 3uimo 0J ay B4NJINIYS NUIN EWCM 400 User Manual 15 41 Number of power steps Polarity RL1 RL4 Balancing of operating hours Fixed sequence Safety timing On off timing On on timing OFF ON and ON ON sequence compressor 1 ON ON and OFF OFF compressor timing 5 SYSTEM CONFIGURATION This section explains how to configure the parameters for the different loads according to the type of system to be controlled 5 1 EWCM 400 can control systems with a cooling circuit comprising a maximum of 4 compressors Capacity steps when present are considered compressors Each compressors is driven by a device relay Compressors are switched on or off according to the temperatures measured and the temperature control functions set see paragraph Control of compressors temperature controller Compressors 5 1 1 The compressors must always be connected to outputs RL1 RL4 Parameter H30 selects the number of compressors in the system Compressor configuration The polarity of the compressor outputs can be selected using parameters H18 and H21 0 Relay ON if compressor capacity step ON 1 Relay ON if compressor capacity step OFF 5 1 2 The order in which the compressors are started can be changed with parameter H37
32. inputs 2 222 cases 7 A baiiia 31 DISCLAIMER ono id leia 35 PING chad teeta ae aes 11 Downloading the parameter Map 9 DRV MORES A A 37 DRV modules Wiring diagram for DRV modules 37 E Electromechanical date AAA 31 EWCM 415 wiring diagram with temperature and CUNO MPU A O OI 6 EWCM 418 wiring diagram with temperature and a O O SENE SNEEN ENE 6 F Fan FAN parameter table ooociococociccnnnononinnnnonono 26 Fan module control TK1 gt 412 models only 8 Fan DOTOMBEE ici iii 25 FIXED SEQUENCE A ON 15 for EWCM 412 with temperature and current FUNCTIONS H Heating inverse controller servere 18 aE 15 OI O eye due 3 l Impulse d rt iii 16 INSEALA TION iiinis 5 INTRODDCTHON MA d dinner bis Eg seer sr hade 4 K M Menu SEPUICEIT Es ccscssscsvesnssssesasssesessssovssessssngesecsngsesetotess Modifying status of On Off device N Number of events per hour 2 cesser 27 Number O power steps scenes essere 15 0 OFF ON and ON ON sequence compressor 1 15 BA MIND EEE EEE 15 Onon A SAs 15 ON OFF OUMU ocrni 16 ON OFF SOGUCIICE sate cesciccvscsssssesessscvdsenesscenstettensetenndess 21 ON ON and OFF OFF compressor timing 15 ON ON and OFF OFF sequence compressor 2 16 Operating modes PEP HURTS O P Param Manager PCInterface2150 2 2 38 PARAMETERS civic tic idad ca 23 PROSE SV ia 16 Physical quantities and units of measurement 10
33. ith parameter F04 5 3 Alarm output Depending on the model type the alarm output is controlled as follows using different outputs ALL 12 24 Vac Triac alarm output for EWCM 412 only RL RLO5 relay output for alarm control for models EWCM 415 EWCM 418 Polarity H36 determines the polarity of the alarm output EWCM 400 User Manual 17 41 0 the output is active contact closed when an alarm is active and the machine is off 1 the contact is open with the same conditions Alarm OFF H38 establishes whether the alarm is active in Standby mode 0 inactive alarm output in Stand by mode 1 active alarm output in Stand by mode The power supply of the alarm output must be kept separate from the power supply of the controller EWCM 400 User Manual 18 41 Operating modes Selection of operating mode Stand by 6 TEMPERATURE CONTROL FUNCTIONS Once the EWCM 400 has been configured it is ready to control the loads according to the temperature and pressure conditions measured by the probes and the temperature control functions defined by special parameters The following operating modes are available cooling direct heating inverse e stand by The operating mode is selected using parameter H37 0 cooling direct function 1 heating inverse function Stand by in this mode the unit does not perform temperature control functions and all alarms remain active The section below describes the menu i
34. n of hour recorded is set to 0 thus the duration is rounded by default EJ gt gt 07 EWCM 400 User Manual 23 41 H01 H02 H03 H04 H05 H06 H07 H08 H09 H10 H11 H12 H13 H14 H15 H16 H17 H18 H19 H20 H21 H22 H23 H24 H25 H26 H27 H28 H29 H30 8 PARAMETERS Parameters can be set to make the EWCM 400 fully configurable Parameters can be changed using e keyboard Copy Card PC using special connection and software 8 1 Description of parameters All the parameters are described in detail in the following sections and divided into categories 8 1 1 Configuration parameters These parameters define the characteristics of the machine If one or more parameters in this category is changed the controller must be turned off and on again after the change is made in order to operate correctly Set point Used to set the control set point Maximum set point Used to set the maximum set point limit Minimum set point Used to set the minimum set point limit Regulation band Sets the regulation band ST1 configuration Used to configure analogue input ST1 0 No probe 1 Temperature input 2 Pressure input 4 20mA signal ST2 configuration 0 No probe 1 N A 2 Pressure input 4 20mA signal Pressure top scale value ST1 Pressure top scale value ST2 Used to set a value that corresponds to a current of 4mA Pressure bottom scale value ST1 Pressure bottom sc
35. ng period 225 seconds it will only be counted once To reset alarms configured for manual reset press and release the Set button Manual resetting stops the corresponding loads and prompts the operator to take the necessary corrective action resetting the alarm using the Set button Manually reset alarms are used to signal potential problems that could damage the system 9 1 List of alarms When an alarm is triggered it has two effects e The corresponding loads are shut down e The alarm appears on the keyboard display The alarm message consists of an Enn code where nn stands for a two digit number that identifies the type of alarm i e E00 E13 E23 The following table lists all possible alarms with their codes and the loads that are shut down EWCM 400 User Manual 28 41 CODE RESOURC SIGNAL DESCRIPTION LOADS SHUT DOWN COMP1 COMP2 COMP3 COMP4 Remote ON OFF Maximum pressure OFF o na Activated when condensation probe ST2 reads a value exceeding value in A06 Activated when condensation probe reads a value below value in A09 Minimum pressure analogue ST2 probe fault Activated if probe ST2 shorts or is switched off or if probe thresholds are exceeded 2mA 22mA Maximum pressure analogue E 1D5 1D7 ST2 ST2 ST2 T1 Activated if probe ST1 shorts or is switched off or if probe thresholds are exceeded 50 C 100 C if it has been configured as temperature input
36. of the Copy Card upload can be copied by accessing the relevant menu as shown in the figure below C Read from dL card gt C D select the relevant menu item SCF is displayed press and release both buttons the buttons have to be held down for less than 2 seconds UL is displayed press and release both buttons the buttons have to be held down for less than 2 seconds y appears press and release both buttons the buttons have to be held down for less than 2 seconds UL is displayed again but in two different ways and therefore with two different meanings o display empty for a second followed by UL reappearing upload successful o UL appears immediately on display upload not successful in both cases to quit hold down both buttons buttons have to be held down for more than 2 seconds y appears on the display hold down both buttons buttons have to be held down for more than 2 seconds UL appears on the display hold down both buttons buttons have to be held down for more than 2 seconds SCF appears on the display hold down both buttons buttons have to be held down for more than 2 seconds go back to the main level To program the parameter map from the Copy Card to the internal memory download select the relevant menu as shown in the figure below EWCM 400 User Manual 10 41 Sopa gt HE Write on UL card gt SCF par
37. output mode TK and TK1 0 proportional fan output 1 ON OFF fan output complying with hysteresis Diagram 2 par 6 2 2 ON OFF fan output in response to request from compressor In this mode the fan is started and stopped according to compressor status If the output is configured as a proportional TK the PICK UP PHASE SHIFT AND IMPULSE DURATION parameters are significant Every time the external fan is started the heat exchanger fan is powered at maximum voltage and the fan is set to the value of parameter F17 for a period of time that is equivalent to the value of parameter F02 in tenths of seconds When this period of time has elapsed the fan continues running at the speed set by the controller The speed specified by parameter F17 can be reached in two ways depending on the value set with parameter F16 0 the controller sets the proportional output to the speed specified with parameter F77 and maintains it for the period of time set with parameter F02 1 the controller sets the proportional output according to a ramp that is used to reach the speed specified by parameter F17 within the time set with parameter F02 If defines the delay that can be used to compensate for the different electric characteristics of the fan motors Parameter F03 determines the duration in microseconds 200 of the fan phase shift It defines the duration in microseconds 200 of the TK output control impulse and can be set w
38. r ON ON safety time controlled by parameter C02 Com Ai ON OFF C01 Time C02 Comp compressor Time time C01 safety timing between start up and shut down C02 safety timing between two subsequent start ups If the systems consists of several compressors or capacity steps the following must also be checked the start up time between 2 compressors C03 and the shut down time between compressors C04 The stop time between compressors is not observed if a compressor shut down alarm is generated If this is the case the compressors are shut down immediately EWCM 400 User Manual 16 41 ON ON and OFF OFF sequence compressor 2 Proportional or ON OFF output Pick up Phase shift Impulse duration Comp1 ON OFF Comp2 ON OFF Comp1 compressor 1 Comp2 compressor 2 Time time C03 Period of time elapsing between start up of two compressors C04 period of time elapsing between shut down of two compressors 5 2 Condensing fan The EWCM 412 controller has 2 outputs for fans e TK 230V output for fans with a maximum current of 2A TK1 Control signal for CF modules 500w 1500w 2200w 5 2 1 Configuration of condensing fan The fan must be properly connected to the corresponding output see wiring diagrams The fan output can be configured to operate in proportional or ON OFF mode Parameter F01 is used to select the Triac
39. rable input 4 20 mA transducer or temperature sensor range 30 C 90 C 7 voltage free digital inputs Terminals and connectors 1 9 way snap on high voltage connector AWG 16 28 1 16 way snap on high voltage connector pitch 4 2 AWG 16 28 1 5 way p2 5 5 connector with remote control and copy card AWG 24 30 1 3 way p2 5 connector for the direct management of an inverter module only for EWCM 418 Display and LEDs 3 digits sign IGN ONE The unit must be powered by means of an adequate transformer with the following characteristics Primary voltage 230V 10 110V 10 Secondary voltage 12V Supply frequency 50Hz 60Hz Power 5VA 10 3 Dimensions Dimensions Front panel 32x74 mm depth see layout Casing PC ABS plastic resin with UL94 VO fire retardant class Mounting Panel on 71x29 mm hole 64mm EWCM 400 User Manual 32 41 UL approvals 10 4 Standards The unit complies with the following European Union Directives EU Directive 73 23 EEC and subsequent amendments EU Directive 89 336 EEC and subsequent amendments And is compliant with the following harmonized standards e LOW VOLTAGE EN60730 2 6 and EN60730 2 9 10 5 Approvals UL E206120 EWCM 400 User Manual 33 41 11 USE OF DEVICE 11 1 Recommended use This unit is designed to control chillers and heat pumps with 1 circuit For safety purposes it is important to make sure that the control device is installed and used
40. rial address User password KER Position of decimal point 2 1 H28 H29 H32 33 H34 H38 H35 H38 Enable output alarms in off state Configuration of optional board 2 If the parameters in this category are changed the controller must be turned off and then on again after the change in order to operate correctly The range also depends on the value of parameters H29 and H33 See paragraph 6 4 Password H32 i H34 H35 ALARM PARAMETERS Par Description Unit A01 Low pressure pressure switch bypass time from 0 255 Seconds compressor Number of low pressure events per hour Compressor activated compressor alarm bypass time Number of alarm events hour for compressor 1 4 Not used RA E High pressure activation set point on analogue input High pressure hysteresis on analogue input Low pressure activation bypass time on analogue input Low pressure activation set point on analogue input Low pressure hysteresis on analogue input Number of low pressure events per hour on analogue ma 0 255 input Number of high pressure events per hour on analogue aa 0 255 input o m Number of high pressure events per hour on digital input 0 255 COMPRESSOR PARAMETERS Cor ON OFF safetytime 0 55 Seconds 10 __C02__ ON ONsafetytime 55 Seconds io gt Fan parameters F01 Fanoutputmode Nm 010 0 Operation in response to compressor request 1 0 1 Minimum speed 100
41. s Low pressure pressure switch by pass time lt determines the delay between start up of the compressor and start up of the low pressure digital alarm diagnostics It is expressed in seconds Number of low pressure events per hour Used to set the number of low pressure digital alarm events per hour If the number is exceeded the alarm is switched from automatic to manual reset Compressor activated compressor alarm by pass time Used to set a delay for activating the compressor alarm triggered by start up of compressor It is expressed in seconds Number of alarm events hour for compressors 1 4 Used to set the number of compressor alarm events per hour If the number is exceeded the alarm is switched from automatic to manual reset Not used High pressure activation set point on analogue input Used to set a condensation pressure value above which the high pressure alarm is activated High pressure hysteresis on analogue input Used to set the differential for the high pressure alarm on the analogue input Low pressure activation bypass time on analogue input Used to set a delay for activation of low pressure analogue alarm triggered by start up of the compressor It is expressed in seconds Low pressure activation set point on analogue input Used to set a temperature pressure value below which the low pressure alarm is activated Low pressure hysteresis on analogue input Used to set the differential for the low pressure analogue alarm
42. sing fans with a maximum current of 2A for EWCM 412 only 1 analogue output PWM marked as TK1 for control of fan modules with currents above 2A for EWCM 412 only 1 4 20mA 0 10V analogue output for control of condensing fans for EWCM 418 only EWCM 400 User Manual 8 41 Polarity of relays The outputs described above are summarized in the following table Relay for O Output for control Unit Or alarm 12 24 Vac Triac Output for fan SSA Analogue output p management alarm output control TK for condensing fans control RL5 module TK1 EWCM 1 1 412 i EWCM 415 5 1 i EWCM 1 418 7 3 4 1 Relays RL gt All models RL1 Compressor 1 2A 250V 1 4HP a 240V RL2 Compressor 2 2A 250V 1 4HP a 240V RL3 Compressor 3 2A 250V 1 4HP a 240V RL4 Compressor 4 2A 250V 1 4HP a 240V 1 8HP 120V 1 8HP 120V 1 8HP 120V 1 8HP 120V gt Models 415 418 only e RL5 for models EWCM 415 and EWCM 418 Alarm 2A 250V 1 4HP a 240V 1 8HP 120V The polarity of the compressor relays can be defined using specific parameters as listed below Polarity of relay compressor Polarity of relay compressor Relay closed if output active Relay closed if output inactive H19 2 Relay closed if output active H20 ay of relay compressor Relay closed if output active H21 io of relay compressor Relay closed if output active 3
43. sriecesetesissssancisensnetessenstsdesndeddass leesasentny 3 CFS PROS anita 37 Compressor CP parameter table 26 Compressor configuration sessecsesesceeceeceeceeeeecneeeees 15 Compressor parameters ececececeeseeeseeseceseceeeeeeeeeeees 24 Compressor start stop sequence 2 enes 15 Compressor timing COU A ET Condensing fanus Condensing fan analogue output gt 418 models PNY T T heros hates extended 8 Condensing TON CORTO cinc 20 Condensing fan Triac TK gt 412 models only 8 Configuration CNF parameter table 25 Configuration of analogue inputs 7 Configuration of condensing fan 2 16 Configuration of digital inputs 2 2 7 Configuration Of OULPUES secscsessecsesessessesesseseeseeseeeees 7 Configuration parameters cesser 23 Configuration table for analogue inputs 7 Connecting the Copy COP ccsecsscssssssnsesersarconersencnsense 9 Control of compressors cooling direct controller 18 Copy Cand ci 9 38 Copying the parameter Map coccoci nocininnoionionianoci neninss 9 Cross references n s asccsesssessssescoessostssoetersessnsessatevtecssnsesens 3 D Decimal point VALUE cccccesecseesssssseeecseeseseseceeseneeteseeees 7 Description of digital Inputs coocnommomm 7 Description Of parameters ssecsesecsessesesseeseseeseeseseeses 23 a A ENEE ENE 12 DIAGNOSTICS cia 27 Digital AO ai 29 Digital
44. t fans EWCM412 4 2 7 1 1 1 1 EWCM415 4 2 7 1 1 EWCM418 4 2 Y 1 1 1 The TTL serial output can be used to connect the unit to the Televis supervision system or for quick programming using the Copy Card This output can also be used to connect the unit to other systems using a ModBUS protocol parameter selectable EWCM 400 User Manual 5 41 Wiring diagram for EWCM 412 with temperature and current input 3 INSTALLATION Before proceeding make sure that you have connected the power supply using a suitable external transformer Cards must be connected as follows do not apply loads to the outputs exceeding those indicated in this specification e when connecting the loads carefully observe the wiring diagrams always use separate cables for high and low voltage loads 3 1 Wiring diagrams for EWCM 400 devices There are 3 EWCM 400 models EWCM 412 with integrated fan control EWCM 415 with relay output for alarms EWCM 418 with relay output for alarms and 0 10V 4 20mA output for the control of condensing fans The wiring diagrams for the models grouped according to input type temperature or current are shown below fooooolloooll gt TIL fecoooolloool SSS x E F
45. tems 6 1 Control of compressors cooling direct controller The controller calculates the load to be supplied via the compressors Temperature control with regulation band around set point in Cooling mode Power H01 Step4 Step3 Step2 Step1 ST1 H04 Figure 1 Power power Step1 1st step ST1 ST1 probe Step2 24 step I hysteresis Step3 3rd step H04 band Step4 4th step H01 set point Compressor start up is controlled by the analogue input ST1 The temperature control function has an adjustable band and is set using a maximum of 4 steps Probe ST1 reads the temperature or pressure of the gas before it is compressed and is shown in the abscissas in the graph in the figure Axis Y shows the number of steps depending on configuration The intervention points for each step are determined by the set point band value number of steps The distance between the intervention points is band HO4 number of steps H30 This corresponds to the hysteresis for each step 6 2 Heating inverse controller Temperature control with regulation band around set point in Heating mode as alternative to cooling mode EWCM 400 User Manual 19 41 Power Step4 Step3 Step2 Step1 Power power Step1 1st step ST1 ST1 probe Step2 274 step I hysteresis Step3 3rd step H04 band Step4 4th step H01 set point EWCM 400 User Manual 20
46. ut ST2 is always a current input H08 the top scale value for input ST2 is used to set a value that corresponds to a current of 4mA H10 the bottom scale value for input ST2 is used to set a value that corresponds to a current of 20mA Resolution of the P t02 menu display and parameters HO8 H10 is always with a decimal point 3 3 Configuration of digital inputs There are 7 voltage free digital inputs identified as ID1 1D17 The digital input polarity is defined by the parameters listed here below A Polarity of digital input ID1 Active if closed Active if open Polarity of digital input ID2 Active if closed Polarity of digital input ID3 Active if closed Active if open Polarity of digital input ID5 Active if closed Polarity of digital input ID6 Active if closed Polarity of digital input ID7 Active if closed All inputs are fixed They are described in the following table Polarity of digital input ID4 Active if closed Inputs Description ID1 Thermal switch compressor 1 ID2 Thermal switch compressor 2 ID3 Thermal switch compressor 3 ID4 Thermal switch compressor 4 IDS Machine shutdown remote ON OFF 1D6 High pressure alarm 1D7 Low pressure alarm 3 4 Configuration of outputs The outputs on the device are e A relay contacts 5 for EWCM 415 and EWCM 418 1 12 24 Vac Triac alarm output for EWCM 412 only 1 output for direct phase cut off control TRIAC marked with TK of conden
47. within the same range can be set for the fan unit Se The fan is always off if an alarm indicating that a condensing fan has been switched off is present refer to table of alarms EWCM 400 is in Stand by mode Ventilation chart OFF Press ST2 Control Value Press pressure F06 minimum fan speed F07 maximum silent fan speed F08 minimum fan speed pressure set point FO9 fan proportional band F10 fan cut off delta F11 cut off hysteresis F13 maximum fan speed F14 maximum fan speed pressure set point EWCM 400 User Manual 21 41 ON OFF sequence F06 OFF Control Value Press pressure F08 minimum fan speed pressure set point F10 fan cut off delta F11 cut off hysteresis Press ST2 EWCM 400 User Manual 22 41 7 FUNCTIONS 7 1 Registration of working hours The unit stores in the non volatile memory the hours of operation of the 4 compressors Internal resolution is in minutes To display the values it is necessary to access the related menu labeled Ohr see menu tree The integer value is displayed for values below 999 while the hours 100 value along with the decimal point is displayed for values above 999 1234 hours are displayed as follows To reset the hours it is necessary to access the related menu labeled rES see menu tree In the event of power failure the last fractio
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