Eliwell EWCM 4120, EWCM 4180, EWCM 4150 User Manual
EN
EWCM 4120-4150-4180
Compact controller for compressor plants
e
1 2
Summary
INTRODUCTION - CHaracteristics ............................................................................................................................................................ 4
CONDITIONS OF USE................................................................................................................................................................................... 4
MECHANICAL ASSEMBLY............................................................................................................................................................................7
WIRING DIAGRAMS...................................................................................................................................................................................... 7
CONNECTION DIFFERENCES BETWEEN EWCM412/415/418 and EWCM4120/4150/4180....................................................... 13
BASIC FUNCTIONS .....................................................................................................................................................................................14
LEDs........................................................................................................................................................................................................14
Displays in particular states..............................................................................................................................................................15
Keys........................................................................................................................................................................................................ 16
User interface configuration............................................................................................................................................................17
Main display.........................................................................................................................................................................................19
Password and visibility....................................................................................................................................................................... 19
Accessing and using the menus ......................................................................................................................................................20
Machine state menu ..........................................................................................................................................................................20
Programming menu ...........................................................................................................................................................................21
CONFIGURING THE MACHINE.................................................................................................................................................................21
1) ANALOGUE INPUTS (AI3, AI4)....................................................................................................................................................21
3) HIGH/LOW VOLTAGE DIGITAL OUTPUTS (DO1…DO6)........................................................................................................ 25
4) PWM/OPEN COLLECTOR OUTPUTS AO1 AND AO2.............................................................................................................26
5) TRIAC TC OUTPUT.........................................................................................................................................................................29
6) LOW VOLTAGE ANALOGUE AO3 OUTPUT .............................................................................................................................30
COMPRESSOR CONTROL.......................................................................................................................................................................... 31
Inverter compressor control............................................................................................................................................................32
Digital compressor control...............................................................................................................................................................34
Compressor timing.............................................................................................................................................................................36
Power stages........................................................................................................................................................................................37
Compressor switch-on policies .......................................................................................................................................................37
CONDENSATION CONTROL.....................................................................................................................................................................39
INVERTER COMPRESSOR CONTROL ..............................................................................................................................................40
DIGITAL FAN CONTROL.................................................................................................................................................................... 44
ADVANCED FUNCTIONS...........................................................................................................................................................................49
On/off device ......................................................................................................................................................................................49
Recording operating hours ..............................................................................................................................................................50
Real Time Clock (RTC).......................................................................................................................................................................50
ALARMS ........................................................................................................................................................................................................51
Alarms list with description and activation parameters............................................................................................................53
Alarm list with actions and notes ...................................................................................................................................................55
Alarms log ............................................................................................................................................................................................58
SERIAL CONFIGURATION..........................................................................................................................................................................59
PARAMETERS LIST ......................................................................................................................................................................................61
NAVIGATION MENU DIAGRAMS ............................................................................................................................................................69
ACCESSORY PRODUCTS............................................................................................................................................................................ 72
TECHNICAL DATA.......................................................................................................................................................................................73
Mechanical characteristics ...............................................................................................................................................................73
Electrical characteristics.................................................................................................................................................................... 73
Input/Output characteristics............................................................................................................................................................ 73
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INTRODUCTION - CHARACTERISTICS
The EWCM is a device which represents a family of controllers dedicated to managing the production room of a
refrigerator plant:
Configurable user interface.
Configurable navigation menu.
Alarms log.
Temperature control via inlet probe depending on configuration and installation.
Condensation control via outlet probe depending on configuration and installation.
NTC, 4…20 mA, 0…5V or 0.10V parameter-configurable inputs.
Parameter settings via keyboard or PC.
Copy card for uploading and downloading parameter maps.
Control of a single circuit with up to 4 compressors (or combination of compressors) whole or segmented with
up to 4 power stages/inverter compressor.
Condensation control with inverter fan or up to 4 digital fans.
CONDITIONS OF USE
Permitted use
This device is intended for controlling compressor plants.
For safety reasons, the instrument must be installed and used according to the instructions provided and in particular,
under normal conditions, parts bearing dangerous voltages must not be accessible. The device must be adequately
protected from water and dust as per the application, and must also only be accessible via the use of tools (with the
exception of the frontlet).
The device is ideally suited for use in household appliances and/or similar refrigeration equipment and has been
tested with regard to the aspects concerning European reference standards on safety. It is classified as follows:
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according to its manufacture: as an independently mounted or integrated automatic electronic control device
to be incorporated;
according to its automatic operating features, as a 1 B-type operated control type;
as a Class A device in relation to the category and structure of the software;
as a device with pollution grade 2;
as a device with class D fire resistance;
overvoltage category grade II
as a device made with class IIIa material.
Uses not permitted
Any use other than that expressly permitted is prohibited.
The relay contacts supplied are of the functional type and subject to fault (since they are electronically controlled
they are prone to short-circuit or remaining open): any protection devices specified in product standards or suggested
by common sense for obvious safety requirements must be installed externally to the instrument.
RESIDUAL RISKS AND RESPONSIBILITIES
Eliwell is not liable for damage due to:
unspecified installation/use and, in particular, in contravention of the safety requirements of established
legislation or specified in this document;
use on equipment which does not provide adequate protection against electrocution, water and dust in the
actual installation conditions;
use on equipment which allows toolfree access to dangerous components;
tampering with and/or alteration of the products;
installation/use on equipment which does not comply with established legislation and standards.
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DISCLAIMER
This document is the exclusive property of ELIWELL CONTROLS Srl and shall not be reproduced or distribuited
without authorisation of ELIWELL CONTROLS Srl.
Although great care has been exercised of this document, ELIWELL CONTROLS Srl, its employees or its vendors,
cannot accept any liability whatsoever connected with its use.
The same applies to any person or company involved in preparing and editing this document.
ELIWELL CONTROLS Srl reserves the right to make any changes or improvement without prior notice.
ELECTRICAL WIRING
Attention! Never work on electrical connections when the machine is switched on. The operation must be
carried out by qualified personnel.
To ensure proper connections, comply with the following:
using a power supply which does not correspond to the specifications given, can seriously damage the system;
use cables of suitable section for the terminals used.
Separate, as much as possible, the cables of probes and digital inputs from inductive loads and power
connections to prevent electromagnetic interference. Do not place the probe cables near other electrical
equipment (switches, meters, etc.)
Make connections as short as possible and do not wind them around electrically connected parts.
It is recommended to use screened wires for probe connections.
To avoid causing static discharges, do not touch the electronic components on the boards.
Eliwell supplies the high voltage cables to connect the device to loads, the power supply, probes, digital inputs, etc.
according to p/n - see the Accessories chapter.
The device must be connected to a suitable transformer that complies with the specifications provided in the
Technical Data chapter.
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MECHANICAL ASSEMBLY
76.4mm
70mm
28mm
35mm
29mm
71mm
67mm
59mm
The instrument is designed for panel mounting. Make a 29x71 mm hole and insert the instrument; secure it with the
special brackets provided. Do not mount the instrument in damp and/or dirt-laden areas; it is suitable for use in
places with ordinary or normal levels of pollution. Keep the area around the instrument cooling slots adequately
ventilated. The TTl serial port is located on the left side of the instrument.
70mm
67mm
29mm
71mm
76.4mm
59mm
WIRING DIAGRAMS
Circuit diagram key
35mm
28mm
12Va 12Va power supply
5Vc 5Vc power supply for 10A max ratiometric transducer
12Vc Auxiliary 12Vc power supply for AO1 or DO5 output
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DO1... DO6 2A - 230Va high voltage relay outputs
N Neutral
TC TRIAC 2A - 230Va high voltage output
AO1/AO2 PWM/Open collector analogue output for external fan module (to be used with 12Vc)
AO3 0/10 V, 4-20 mA, 0-20 mA low voltage analogue output
DO5 Open collector output (to be used with 12Vc)
DI1...DI5 Digital inputs voltage-free contact (closing current to 0.5mA ground)
AI1 (DI6)..AI2 (DI7) Digital inputs voltage-free contact (closing current to 0.5mA ground)
AI3..AI4 NTC */ voltage, current** / Digital Input configurable analogue inputs***
GND Ground
TTL (COM 1) TTL serial for connection to Copy Card/ParamManager/ DeviceManager or Televis
1 Outlet pressure switch ON/OFF (EWCM 4120 and EWCM 4180)
2 Inlet pressure switch ON/OFF
3 … 6 Block compressor 1… 4 ON/OFF
7 Remote ON/OFF
INPUT
8 Outlet probe (EWCM 4180)
9 Inlet probe
10 … 13 Compressor/power step 1_4 ON/OFF
14 TC high voltage condenser fan (EWCM 4120)
15 TC low voltage condenser fan (EWCM 4180)
16 Low voltage ON/OFF alarm (EWCM 4120)
OUTPUT
17 ON/OFF alarm (EWCM 4150 and EWCM 4180)
* SEMITEC 103AT type (10LΩ / 25°C).
** 4…20mA current input or 0…5V/0…10V voltage input or voltage-free digital input.
*** voltage-free digital input.
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EWCM 4120
16
12 Vdc 35mA max.
12Vac 5Vdc
DO5 GND AI4 AI3
AO1 DI5 DI4 DI3 DI2 DI112Vac12Vdc
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DI7 DI6
AI2 AI1
1 425
3
6
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Not
used
EWCM 4120
15
L
1110
9
12
14
13
EWCM 4150
1 425
3
6
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Not
used
AO3(I)
AO3(V)
GND
AO2
12Vac 5Vdc
12Vdc
DO5 GND AI4 AI3
AO1 DI5 DI4 DI3 DI2 DI112Vac
9
DI7 DI6
AI2 AI1
DO6
1110
L
12
17
13
10
EWCM 4150
12Vac 5Vdc
12Vdc
EWCM 4180
DO5 GND AI4 AI3
AO1 DI5 DI4 DI3 DI2 DI112Vac
9
DI7 DI6
AI2 AI1
1 425
3
15
6
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Not
used
AO3(I)
AO3(V)
GND
AO2
DO6
1110
L
12
17
13
11
EWCM 4180
Examples of probe connections
EWPA 4/20mANTC
12Vac
5Vdc
DO5
AO1 DI5 DI4 DI3 DI2 DI112Vac 12Vdc
GND
AI4 AI3
DI7 DI6
AI2 AI1
12Vac
5Vdc
DO5
AO1 DI5 DI4 DI3 DI2 DI112Vac 12Vdc
GND
AI4 AI3
DI7 DI6
AI2 AI1
EWPA R 0/5V
5Vdc
DO5
AO1 DI5 DI4 DI3 DI2 DI112Vac 12Vdc
GND
12Vac
AI4 AI3
12
DI7 DI6
AI2 AI1
CONNECTION DIFFERENCES BETWEEN EWCM412/415/418 and EWCM4120/4150/4180
The main differences between EWCM412/415/418 and EWCM4120/4150/4180 are listed below:
The terminals of connectors EWCM412/415/418 are different from those of EWCM4120/4150/4180.
The alarm output on EWCM412 (12-24Va max 500mA output for use with 12Va insulated from power supply of
device) is replaced with an open collector output (with parameter configurable function) for use with 12Vc.
PLEASE NOTE: the terminals of the connector, to be used for this output, do not correspond between
EWCM412 and EWCM4120 (see diagram below).
The relays of EWCM4120/4150/4180 do not have a single common contact as on EWCM412/415/418; output
DO4 is separate from the other outputs (DO1, DO2 and DO3)
Connection EWCM412 Connection EWCM4120
A
12Vdc
GND GND ST2 ST1 ID7 ID612Vac ALL
TK1 ID5 ID4 ID3 ID2 ID112Vac
EWCM412
13
T2 T1
B
L
16
12 Vdc 35mA max.
12Vac 5Vac
L
DO5 GND AI4 AI3
AO1 DI5 DI4 DI3 DI2 DI112Vac12Vdc
EWCM 4120
9
DI7 DI6
AI2 AI1
1 425
3
6
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BASIC FUNCTIONS
The user has a display and 4 keys for programming the instrument and checking its status.
When the instrument is powered on for the first time it performs a lamp test, during which time the display and LEDs
flash for several seconds to check that they all function correctly. The instrument has two main menus, the “Machine
state” menu and the “Programming" menu.
EWCM4120 and EWCM4180 EWCM4150
LEDs
Symbol / icon Description Icon on front panel
EWCM4120-EWCM4180
(8) … (11)
Fan bar (configurable LEDs using parameters UI07…UI10)
EWCM4150
LEDs NOT configured (configurable LEDs using parameters UI07…UI10)
Programming menu
Alarm. If permanently on the alarm is active, if flashing the alarm is
silenced.
Heating. Heating mode
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Cooling. Cooling mode
Display of temperature values in °C/°F
Display of pressure values in Bar
Display of pressure values in Psi
Compressor ON (LED configurable using parameters UI00…UI03)
(1) ... (4)
LEDs NOT configured (Led configurable using parameters UI04…UI06)
(5) ... (7)
Displays in particular states
Status Display LEDs /icons
alarm
Remote
ON/OFF
ON/OFF
keyboard/local
Main display alternated with alarm code (if more than one alarm is
present simultaneously, the one with the lower index will be
displayed) If there is an
If the measurement on the main display is incorrect, the error code
will be displayed; If a further alarm is present, it will alternate between
“---“ and the error code.
Display "OFF" flashing All off
Display "OFF" continuous All off
Alarm icon permanently on
If alarm is silenced it will
flash
-
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Keys
SET key used to:
set
SET function: access “machine state" menu.
access menu subfolders.
access parameter value.
Confirm parameter value and/or exit.
prg (Programming menu): press and hold (5 secs) to access the Parameters folders from the
main display.
UP key used to:
Scroll down the displayed folders and parameters.
Increase parameter value (if in parameter edit mode).
Band: press and hold (5 sec.) to enter the menu for viewing/editing the compressor plant
adjustment range.
DOWN key used to:
Scroll up the folders and parameters display.
Decrease the parameter value (if in parameter edit mode).
set: Press and hold (5 secs) to access the menu for viewing/editing the setpoint adjustment,
and the type of set point will be displayed. To edit the set point, use the "set" key to display
the value and the "Up" and "Down” keys to edit it.
Press “set” to confirm or “func” to exit (see Note).
FNC key used to:
Menu exit, parameter list, parameter value (without saving value) and return to the previous level.
disp: by holding down for some time (5 secs) access is provided to the menu for selecting the main
display. Using the “up” e “down” keys, only the values that have been configured as present in the
device will be displayed (flashing) and the selection is confirmed by pressing the “set” key.
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+
Press any key to silence the alarms; If there is an alarm, pressing a key once will silence it and will not activate the
corresponding function.
User interface configuration
The LEDs are configured using parameters UI00..UI10:
LED utilities table:
Value Description ON Flashing
0 LED disabled - -
1 _ 4 Compressor 1… 4 Active Interstep timing
5 Step 2 compressor 1 Active Interstep timing
6 Step 2 compressor 2 Active Interstep timing
7 Step 2 compressor 3 Active Interstep timing
8 Step 3 compressor 1 Active Interstep timing
9 Step 3 compressor 2 Active Interstep timing
10 Step 4 compressor 1 Active Interstep timing
11 …14 Fan 1 ... 4 ON Active Interstep timing
15 Alarm Active Silenced
16 … 22 Not used - -
23 Compressor inverter enabling Active 24 Fan inverter enabling Active 25 Inverter fan Active Interstep timing
If any alarms are present, they can be reset by simultaneously pressing the UP + DOWN
keys.
17 18
26 Inverter compressors Active Interstep timing
27 Inverter fan bar ≥25% Active 28 Inverter fan bar ≥50% Active 29 Inverter fan bar ≥75% Active 30 Inverter compressor bar ≥25% Active 31 Inverter compressor bar ≥50% Active 32 Inverter compressor bar ≥75% Active -
User interface configuration parameters:
Par. Description Min Max U.M. Notes
UI12 Select main set point display 0 1 num
UI13 Select main display 0 6 num
UI20 Installation password 0 255 num Default UI20= 1
UI21 Manufacturer password 0 255 num Default UI21=2
UI22 Unit of temperature measurement 0 1 num 0=°C, 1=°F
UI23 Unit of pressure measurement 0 1 num 0=Bar, 1=Psi
Parameters UI20 - UI21
In parameters UI20 and UI21 respectively, the installer (level 1) password and manufacturer (level 2) password must
be changed. See PASSWORD AND VISIBILITY chapter.
0=display Inlet Set
1= display Outlet Set
Main display
Under normal operating conditions, it is possible to select which measurement to display on-screen (not in the
navigation menu or in the case of alarms).
Press and hold the “FNC” key to access the folder containing all of the available measurements. The only
measurements which will be displayed, flashing on-screen, are those which can be selected and which are present in
the device (for example The RTC will appear in the list only if it has been configured as present). The list is as follows:
AI01…AI04 (one of the probes available among those configured in the device)
RTC (clock)
Set point; In OFF, the set point displayed is the set point for the previous operating mode in OFF status.
The following procedure describes how to set the main display:
Press the “FNC” key for 5 seconds (value configurable from parameter UI19)
select the measurement to display by scrolling through the various options using the Up and Down keys
press the “set” key
Par. Description Min Max U.M. Notes
UI13 Main display 0 6 num
NOTE: Either the inlet setpoint or the outlet setpoint will be displayed, depending on parameter UI12 (select main set
point display).
Password and visibility
To view parameters visible for the given password, open folder PASS (in the Parameters menu PAR) and set the level1
value (set in parameter UI20) or level2 value (set in parameter UI21). The visibility of the parameters and the folders
during menu navigation can be configured by assigning appropriate values to each parameter and folder. This
operation can only be performed using suitable software (Parammanager or other communication SW).
0=analogue input 1, 1=analogue input 2, 2=analogue
input 3, 3=analogue input 4, 4= analogue input 5,
5= clock, 6= set point configured
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The visibility levels are:
Value 0 = Parameter or folder not visible.
Value 1 = installer level; These parameters can only be viewed by entering the Password 1 value (all parameters
specified as always visible and parameters that are visible at the installation level will be visible).
Value 2 = manufacturer level; These parameters can only be viewed by entering the Password 2 value (all
parameters specified as always visible, parameters that are visible at the installation level, and manufacturer
level parameters will be visible).
Value 3 = parameter or folder always visible.
Accessing and using the menus
Resources are organised into menus and viewed by briefly tapping the “set” key (“Machine state” menu) or by
keeping the “set” key pressed for more than 5 seconds (“Programming” menu). Press the "set" key once to view the
contents of any folder highlighted by the corresponding label. At this point it is possible to scroll through the
contents of any folder, editing it or using the functions envisaged for it. Either do not press any keys for 15 seconds
(time-out) or press the “fnc” key once, to cancel the parameter modifications and return to the previous screen.
WARNING:Not all of the parameters are visible if the 1 or 2 level password has not been previously entered.
Machine state menu
From the states menu you can view values for each resource.
Some of the resources have “dynamic” visibility, e.g. if there are no alarms present then the AL folder will not be
displayed.
Folder Resources Visibility Description Edit
Ai AI01 AI02 AI03 AI04 Dynamic Analogue inputs //
di di01 di02 di03 di04 di05 // Dynamic Digital Input //
AO tC1 AO1 AO2 AO3 // // Dynamic Analogue outputs //
dO dO01 dO02 dO03 dO04 dO05 dO06 Dynamic Digital outputs //
CL HOUr dAtE YEAr Clock YES
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AL Er00 …. … … … Er99 Dynamic Alarms //
SP (1)* // // // // // set point(set) YES
Hr CP01 … CP04 Fn01 … Fn04 Dynamic
SC CP01 … CP04 Compressor selection //
As you will be able to see from the table, the setpoint SP and time can be modified and viewed.
(1) * The following type is initially indicated for the set point: SUCTion Set, DISCharge Set. Press the "set" key once
again to view/edit the set point value.
Programming menu
Menu Folder Subfolders Description
Parameters PAr CF Ui St CP Fn AL Pass CC OP Parameters
EU EU Eu00 … … … … … … … Eu99 Alarms log
EUR EUR Reset alarm history
Operating hours
Compressors / fans
YES
CONFIGURING THE MACHINE
1) ANALOGUE INPUTS (AI3, AI4)
The device has 2 analogue inputs which are configurable using the following parameters:
CF02* Type of analogue AI3 input CF07 Analogue AI4 input start of scale value
CF03* Type of analogue AI4 input CF10 Analogue AI3 input differential
CF04 Analogue AI3 input end of scale value CF11 Analogue AI4 input differential
CF05 Analogue AI3 input start of scale value CF14** Configuration of analogue AI3 input
CF06 Analogue AI4 input end of scale value CF15** Configuration of analogue AI4 input
See Parameters F04 … CF11 limits table
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* If inputs AI3 and AI4 are not set as DI, parameters CF25 and CF26 parameters must be set to 0. Failure to observe
this rule may result in malfunctions.
** If inputs AI3 and AI4 are set as DI, parameters CF14 and CF15 parameters must be set to 0.
*** The unit of measurement (U.M.) is selected based on parameters CF02 and CF03 and parameters UI22 (C°/F°) and
UI23 (Bar/Psi).
Inputs AI3 and AI4 are configurable as indicated in the following table (CF02 ... CF03):
Notes:
If an input is configured as NTC, the corresponding parameters are always displayed with the “thermometer” icon.
(UI22=0/1; U.M.= C°/F°)
If an input is configured as 4-20mA, 0-10V or 0-5V, the corresponding parameters are displayed with U.M. =Bar if
UI23=0 with U.M.=Psi if UI23=1.
Parameters CF04 ÷ CF07
Indicate the reading scale analogue limit values for inputs configured as 4-20mA, 0-10V, 0-5V. (Inputs 3 and 4 only)
If the input is not configured as input 4-20mA, 0-10V, 0-5V, the end of scale parameters lose meaning.
Value Type Description
0 None Probe not configured
1 DI Probe configured as potential-free contact digital input
2 NTC NTC probe range -50.0°C ÷ 99.9 °C
3 4-20mA Analogue input 4-20 mA
4 0-10V Analogue input 0-10 V
5 0-5V Analogue input 0-5 V
22
Parameters CF10 ÷ CF11
Indicate the correction values to add to or subtract from the analogue inputs; by means of this parameter it is
possible to calibrate the temperature/pressure value read by the device. The value given by the instrument reading
“AIxx analogue input differential" will be used by the regulator connected to that probe and will be displayed onscreen. If the input is configured as a digital input, the correspon ding correction parameter must be set to 0
(otherwise the digital input will not function correctly).
Parameters CF14 ÷ CF15
Indicate the logical meaning of the analogue inputs. If the input is configured as a digital input, refer to parameters
CF23..CF26.
* If CF02=4-20mA, 0-10V, 0-5V then CF14 cannot be set to 2 or 3.
** If CF03=4-20mA, 0-10V, 0-5V then CF15 cannot be set to 1.
2) DIGITAL INPUTS (DI1, DI2, DI3 DI4 and DI5)
The EWCM32x74 device has 5 digital inputs for potential-free contacts which are configurable by means of user
parameters. If necessary the analogue inputs may also be configured as digital inputs.
Parameter Description
Value Description
0 Probe disabled
1 Inlet regulation probe *
2 Outlet regulation probe **
3 Not Used
CF16…CF20 DI1 …DI5 digital input configuration
CF23 …CF26* AI ...AI4 analogue input configuration if configured as digital input
* Set = 0 if AI1 is NOT configured as DI.
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