Eliwell EWDR 983/CS User manual

USER INTERFACE
The user interface has a 6 LED display to
indicate alarm status and five buttons for
controlling instrument status and pro-
gramming.
BUTTONS AND LEDS
UP Increase in value of
parameter Menu scrolling
and activation of defrost
function
(Parameter programmable
H31)
DOWN Decrease in value of
parameter
Menu scrolling and activation
of associated function
(Parameter programmable
H32)
set Access to different levels of
menu Alarm display, set
point, probes and rtc
Access to programming of
parameters
fnc Exit current level of
menu Confirmation of value of
parameter
(Parameter programmable
H33)
aux Activation of associated
function using parameter
H34
SIGNAL LED
The status of the external devices, func-
tions and controllers is described by the
device LEDs.
DISPLAY
This is used to display the inputs, the set
point, the parameters and related values,
alarms, functions and the status of the
device.
DESCRIPTION OF MENU
Access to both menus is controlled by
the ‘set’ button. If it is pressed and
immediately released, the ‘machine sta-
tus menu‘ is displayed. Hold the same
button down for 5 seconds to access the
‘parameter programming menu‘.
When one of the two menus has been
accessed, you can navigate between the
level 1 folders using the ‘UP’ and ‘DOWN’
buttons. The folders are opened by
pressing the ‘set’ button once. You can
now scroll through the contents of each
folder, modify it or use its functions.
You can exit each level of both menus in
three ways: using the ‘fnc’ button, if a
new value is confirmed by pressing the
‘set’ button or, when the time-out has
elapsed (15 seconds inactivity on the
device).
MACHINE STATUS MENU
The ‘machine status menu’ contains the
folders and basic information on the
device:
-AL: alarm folder
-SEt: Set point setting folder
-rtc: Real Time Clock folder(if present)
-Pb1: ‘probe 1 value’ folder
-Pb2: ‘probe 2 value’ folder
-Pb3: ‘probe 3 value’ folder
If no alarms are present, the “SEt” label
is displayed. From here, you can scroll
down the other menu items using the
UP’ and ‘DOWN’ buttons. Each folder
can be accessed by pressing the ‘set’
button once.
Values are modified using the ‘UP’ and
‘DOWN’ buttons and the ‘set’ button
that confirms the selected value and
takes you back to the higher level.
Setting the set point
Access the ‘machine status menu’. If no
alarms are present, the “SEt” label is dis-
played. By pressing and immediately
releasing the ‘set’ button, the set point
value can be set using the UP’ and
‘DOWN’ buttons. Press and release the
‘set’ button again or press the ‘fnc’ but-
ton to go back to the main menu level.
The set point setting folder is also closed
when the time-out elapses.
Alarm on
If an alarm condition exists when the
Machine Status menu is accessed the
“ALfolder label appears.
Real Time Clock (/C models)
By pressing the “set” button when the
“rtc” label appears, the label d00 (days)
is displayed. Use the “UP” and “DOWN”
buttons to set days. If you do not use
the buttons for over 2 seconds or if you
press “set” you switch to the hours (h00)
and minutes (‘00) folders: use the “UP”
and “DOWN” buttons to set the hours
and minutes respectively. If you do not
use the keyboard for over 15 seconds
(time-out) or if you press the “fnc” but-
ton once, the last value shown on the
display is confirmed and you go back to
the previous screen mask.
NOTE: Always use the “set” button to
confirm the hours/minutes/days set-
ting.
NOTE2: We recommend considering
the first day d00 as SUNDAY.
PARAMETER PROGRAMMING MENU
Access the menu by pressing the ‘set’
button for at least 5 seconds. The menu
structure enables all parameter folders
to be divided into two levels. All the
level 1 folders can be accessed by enter-
ing the password ‘PA1’.
Scroll down the level 1 folders using the
‘UP’ and ‘DOWN’ buttons. Press and
release the ‘set’ button next to the
selected label to access the parameters.
Scroll through the labels in the folder
using the ‘UP’ and ‘DOWN’ buttons,
press ‘set’ to display the current value of
the selected parameter, use the ‘UP’ and
‘DOWN’ buttons and set the required
value by pressing ‘set’. To access the
level 2 folders in the ‘Cnf’ folder, select
the ‘PA2’ label, enter the password ‘PA2’
and confirm with the ‘set’ button. All the
parameters that cannot be changed at
level 1 are in this level.
NOTE: Level 1 parameters will only be
displayed if you quit the ‘parameter
programming menu’ and repeat the
steps for manipulation of level 1 folders.
The steps to follow for manipulation of
level 2 parameters are the same as those
described for the level 1 structure.
NNOOTTEE: It is strongly recommended
that the instrument is switched off
and on again each time parameter
LED Description Indication
Reduced set point Lights up when
inserted LED set point is
displayed*, blinking
* EWDR983/985 /CS (LX) only when reduced set
point is inserted
LED ‘on’ with compressor
LED on. Blinking
for delay, protection
or activation blocked
defrost LED ‘on’ during defrosting
Blinking when
activated manually
or by digital input
fan LED permanently on when
fans are operating
alarm LED ‘on’ if alarm is present.
Blinking for silenced
alarm
auxiliary LED ‘on’ for active output
decimal point ‘on’ to indicate of
voltage when on
stand-by and display
‘off’
cod. 9IS43068 rel. 3/08 -GB-
EWDR 983-985/CS (LX)
EWDR 985/CSK (LX)
electronic controllers for ventilated refrigeration units

configuration is changed in order to
prevent malfunctioning of the config-
uration and/or ongoing timings.
PASSWORD
The passwords “PA1and “PA2” are used
to access level 1 and level 2 parameters.
To change them and assign them the
desired value, access the ‘parameter pro-
gramming menu’ in the “diS” label folder.
The password is requested:
- PA1 when entering the ‘parameter pro-
gramming menu’;
- PA2 in the “Cnf” folder containing the
level 1 parameters.
USING THE COPY CARD
The Copy card function can be used to
upload and download parameter maps
of one or more of the same type of
instrument. The accessory is connected
to the device using the special TTL serial
port on the instrument. The Copy card
can be used for the following functions:
Upload (UL)
The upload function reads the instru-
ment parameters and writes them onto
the Copy card
Download(dL)
The download function writes the para-
meter map present at that time on the
copy card onto the instrument memory.
NOTE:
Upload = instrument—-> Copy card
Download = Copy card —-> instrument
The operations are performed by access-
ing the folder with the ‘FPr’ label and
selecting the ‘UL’, ’dL’ or ‘Fr’ com-
mands. The operation is confirmed by
pressing the ‘set’ button. If the operation
is successful, a “y” is displayed whereas if
it is unsuccessful an “n” will be dis-
played.
Formatting the copy card
This function is necessary when using the
copy card for uploading for the first
time or when using the copy card on
device models that are not compatible.
NOTE: formatting deletes all the data
on the Copy card and cannot be
undone. Download from reset
Once the copy card has been connected
the instrument is switched on. When the
lamp test is over, one of the following
two labels will be displayed for 5 sec-
onds:
- dLY if the operation is successful
- label DLn if operation fails The display
will then go into default position (probe
or set point).
NOTE: after downloading the instru-
ment will begin to work with the new
parameter map that has just been
downloaded.
REMOTE CONTROL SYSTEMS
(/CS LX - /CSK LX models only)
Televis remote control systems can be
connected using the RS 485 serial input.
To configure the instrument to do this,
you need to access the folder with the
“Add” label and use the “dEA” and “FAA”
parameters.
ADVANCED FUNCTIONS
DOOR SWITCH INPUT
This is a clean contact digital input with
programmable polarity. The door switch
input functions are controlled by the
values of the following parameters:
(+ parameters dOA, PEA, dCO and DFO
for model EWDR 985/CSK (LX))
Parameter H11 is used to configure the
door switch input with values between
-8 and +8. Positive and negative values
are present in order to select the polari-
ty assigned to the input:
NOTE:
the ‘-’ sign indicates that the input is
activated when the contact is closed
The ‘+’ sign indicates that the input is
activated when the contact is open.
LIGHT CONTROLLER
Controls the light relay. The function can
be started in two different ways. If you
press the light button the light relay is
switched on if it was off and is switched
off if it was on. The light status is
recorded by the device as soon as the
button is pressed so that when power is
restored after a black-out the device can
continue to operate in the same way as
before the power failure. The following
parameters control how the light works:
The configuration of these parameters
controls the status of the light relay by
using the digital input as well as the nor-
mal button. The parameter dSd automat-
ically switches on the light relay when
the digital input is enabled and switches
it off when the digital input is disabled
following the delay set by parameter dLt.
Parameter H06 activates the light button
and enables the relay when the door is
open even when the instrument is pow-
ered but is ‘off’. The dedicated button
always deactivates the light relay even if
the digital input is on or during the dLt
delay only if the parameter OFL=Y.
DIAGNOSTICS
PROBE ALARMS
When one of the probes is outside the
nominal operating range or the probe is
open or has shorted, an alarm is gener-
ated if at least one of these conditions
persists for at least 10 seconds.
If at least one of these 3 alarms is sig-
nalled the alarm LED and relay are
enabled.
When activated code E1 appears on the
display. If several alarms are activated at
the same time, they are displayed alter-
nately for 2 seconds each.
An error condition in the room probe
leads to:
- E1 code appears on display
- activation of compressor as indicated
by Ont and OFt
- deactivation of maximum and mini-
mum alarm controller. An error condi-
tion in the defrost probe leads to:
- E2 code appearing on display
- end of defrost due to a time-out
Par Description
dOd Digital input switches off loads
dAd D.I. activation delay
OAO Alarm signal delay after disdisabling the
digital input (door closed)
tdO Time out door open. Time out
signal after activation of D.I.
(door open)
H11 Digital output configurability/polarity 1
H21...H25 Digital output configurability 1...5
Par Description
H06 Button/aux input/door switch light active
when instrument off
dSd Enabling light relay by door switch
dLt Delay Light Relay deactivation delay
OFL Light switch always disables light relay
OAO Alarm signal delay after disabling the
digital input (door closed)
tdO Time out door open. Time out
signal after activation of D.I.
(door open)
H11 Digital output configurability/polarity 1
H21...H25 Digital output configurability 1...5
Signal Description
E1 Faulty room probe
E2 Faulty defrost probe
E3 Faulty display probe
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 2/12

MINIMUM AND MAXIMUM TEMPERA-
TURE ALARM
If an alarm condition occurs and alarm
exclusion times are not in progress (see
alarm exclusion parameters), the alarm
icon lights up permanently and the relay
that is configured as an alarm is activated.
This type of alarm does not affect the reg-
ulating in progress.
Alarms are considered as absolute
(default) values or as values related to the
Set point (the distance from the Set point
itself) and based on the Att parameter.
If the alarms are relative (Att=1), the para-
meter HA1 is set to positive values and
LA1 to negative values.
This alarm condition can be viewed in the
folder “AL” with labels “AH1-AL1”.
CLOCK BATTERY ALARM
This alarm is activated in the following
situations:
- when the instrument is switched on for
the first time and the clock is set
- when the instrument is switched on
again after a power off lasting more than
24/32 hours.
The alarm will stop as soon as the
day/hour/minutes are set using the set
parameters.
Resetting is automatic and there is no
need to restart the instrument.
ALARM WITH THRESHOLD REFERRING
TO PROBE 3
An alarm is associated with probe 3 that
refers to a threshold that is reset at a
specified differential.
By setting parameter PbA=3 probe 3 will
signal a high or low temperature alarm
for exceeding the set value.
The alarm is handled in the same way as
the other temperature alarms and stan-
dard signal delays are used.
DEFROST ALARM
If defrosting does not reach the end of
cycle temperature but is terminated by a
time out, the alarm controller is immedi-
ately activated.
An alarm LED remains on and the alarm
is recorded in the Ad2 label alarm menu.
The alarm is automatically reset as soon
as the next defrost cycle starts. The
alarm LED can only be manually
switched off with a silencing procedure.
EXTERNAL ALARM
It is set if the digital input is enabled
with the delay specified by parameter
dAd and remains enabled until the next
time the digital input is deactivated.
The alarm consists of an alarm LED that
remains on, activation of a buzzer and
deactivation of all the device loads (if
specified by the EAL parameter).
If an external alarm is present the EA
label is displayed in the AL folder.
It is reset the next time the digital input
is deactivated and the buzzer can be
manually silenced.
OPEN DOOR ALARM
This alarm is generated when the door is
open for longer than the value specified
in parameter tdO.
door open alarm is signalled in the
alarm folder (AL) and the LED and alarm
relay are switched on.
The OPd label is also displayed.
The relay can be deactivated by pressing
the silencing button. The LED continues
to flash intermittently and the OPd label
remains in the alarm menu until the
door is closed.
MECHANICAL ASSEMBLY
The EWDR 983-985/CS (LX) - EWDR
985/CSK (LX) is designed to be wall-
mounted (removable brackets) or
mounted on DIN rail (Omega 3).
The unit operates correctly with an
ambient temperature range of between
-5 and 55 °C. Units must not be installed
in excessively humid and/or dirty loca-
tions.
ELECTRICAL
CONNECTIONS
Warning! Always switch off machine
before working on electrical
connections.
The instrument has screw terminal blocks
for connecting cables with a maximum
diameter of 2.5 mm2(only one conductor
per terminal block for power
connections): for terminal capacity, see
the label on the instrument.
The relay outputs are voltage free.
Do not exceed the maximum current
allowed. For higher loads, use a suitable
contactor.
Make sure that the power voltage com-
plies with the device voltage.
Probes have no connection polarity and
can be extended using an ordinary bipo-
lar cable (note that if probes are extend-
ed this affects the electromagnetic com-
patibility (EMC) of the instrument: special
care must be used when wiring).
The RS-485 serial and TTL serial cables
must be kept separate from the power
cables.
TECHNICAL DATA
Casing: plastic 4 Din modules
Dimensions: front 70x85 mm, depth
61mm.
Mounting: on DIN rail (Omega 3) or
wall-mounted.
Connections: on screw terminal block for
≤2.5mm2conductors
(only one conductor per terminal block
for power connections)
Operating temperature: -5...55°C.
Storage temperature: -30...85°C.
Operating and storage ambient humidity:
10...90 % RH (non-condensing).
Display: 3 digits + sign
Analogue inputs: 3 NTC/PTC inputs
(parameter configurable)
Digital inputs: 2 voltage-free parameter-
configurable digital inputs.
Serial:
-TTL for Copy Card
-RS485 for connection to TelevisSystem
(for /CS LX - /CSK LX models only)
Digital outputs:
EWDR 983 (/CS LX):
2 digital outputs on relay:8A 1/2hp 250V
SPDT; 16A 1hp 250V SPDT;
EWDR 985 (/CS LX):
4 digital outputs on relays: 8A 1/2hp
250V SPST; 8A 1/2hp 250V SPDT; 16A
1hp 250V SPST; 8A 1/2hp 250V SPST.
Configurable 12Vc/24mA output
EWDR 985/CSK (LX):
4 digital outputs on relays: 8A 1/2hp
250V SPST; 8A 1/2hp 250V SPDT; 16A
1hp 250V SPST; 8A 1/2hp 250V SPST.
Link: Output for Link network
Resolution: 1 or 0.1°C.
Accuracy: better than 0.5% of bottom
scale +1 digit
Consumption: 5VA
Power supply: 230Va
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 3/12
DISPLAY
AH1
AL1
AH3
AL3
Ad2
EA
Opd
E7*
Press any button to silence the alarm. The LED will
start to blink. If simultaneous, they will be showed
on the display alternately every 2 seconds
*ONLY FOR EWDR 985/CSK (LX)
In the event of addressing errors, E7 will not be
shown, but the display will blink.
ALARM
High temperature alarm (referring to
room probe or probe 1)
Low temperature alarm (referring to
room probe or probe 1)
High temperature alarm (referring to
probe 3)
Low temperature alarm (referring to
probe 3)
Defrosting timed out
External alarm
Door Open Alarm
Master-Slave Communication failure

PAR. DESCRIPTION RANGE DEFAULT VALUE LEVEL U.M.
SEt Set point with range falling between the minimum
LSE set point and the maximum HSE set point. The
value of the set point is in the machine status
menu
LSE...HSE 0.0 °C/°F
diF When the compressor stops when it reaches the
set point value, it restarts at a value corresponding
to the set point plus the value of the differential It
must not be 0
0.1...30.0 2.0 1-2 °C/°F
HSE Maximum set point value LSE...302 50.0 1-2 °C/°F
LSE Minimum set point value -58.0...HSE -50.0 1-2 °C/°F
OSP Offset point. Value to be added to set point if
reduced set point is activated Economy function). -30.0...30.0 0 2 °C/°F
Cit Minimum compressor ON time. Minimum time for
activating a compressor before deactivation Not
active if=0
0...250 0 2 min
CAt Maximum compressor ON time. Maximum time for
activating a compressor before deactivation Not
active if=0
0...250 0 2 min
Ont (1) Compressor activation time if probe is faulty. If set
to 1 with OFt=0 the compressor always remains on
whereas if OFt>0 it operates in duty cycle mode
(see Duty Cycle diagram)
0...250 01-2 min
OFt (1) Compressor shut-down time if probe is faulty. If set
to 1 with Ont=0 the compressor always remains off
whereas if OFt>0 it operates in duty cycle mode
(see Duty Cycle diagram)
0...250 11-2 min
dOn Delay in activating compressor relay after start-up 0...250 01-2 sec
dOF Delay after shut-down; between compressor relay
shut-down and subsequent start-up the specified
time must elapse.
0...250 01-2 min
dbi Delay between switch-ons; the specified time must
elapse between two subsequent switch-ons 0...250 01-2 min
OdO Delay in activating outputs after start-up of instru-
ment or after a power failure. Not active if=0 0...250 01-2 min
dty Defrost type:
0 = Electrical or Off Cycle defrost (Compressor
OFF during Defrost;
1 = Reverse cycle defrost (hot gas - Compressor
On during Defrost);
2 = ’Free’ : Independent defrost (compressor cycles ON/OFF according to temperature during defrost)
0/1/2 0 1-2 flag
dit Period of time elapsing between the start of two
defrosts 0=function disabled 0...250 61-2 hours
dt1 Unit of measurement for defrost times (par. dit)
0=”dit” expressed in hours
1=”dit” expressed in minutes
2=”dit” expressed in seconds
0/1/2 0 2 flag
NOTE: At level 1 the folders will only display all the level 1 parameters. At level 2 the folders will only display all the
level 2 parameters. The symbol 1-2 indicates the parameters that are displayed at both menu levels
Defrosting controller-dEF label Compressor controller-CP label
dt2 Unit of measurement for duration of defrosting
(dEt parameter)
0= “dEt” parameter expressed in hours
1= “dEt” parameter expressed in minutes
2= “dEt” parameter expressed in seconds
0/1/2 1 2 flag
dCt Selection of defrosting time count mode.
0=compressor operating hours DIGIFROST®
method). Defrosting active only if compressor is
on.
1 = equipment operating hours; defrost counting is
always active when the machine is on
2=compressor stop Each time the compressor stops
a defrosting cycle according to par. dtY
3=con RTC. Defrosting at times set by dE1...dE8,
F1...F8 parameters.
0/1/2/3 1 1-2 flag
dOH Delay between start of first defrosting operation
and start-up of instrument. 0...59 01-2 min
dEt Defrosting time-out; determines maximum dura-
tion of defrosting. 1...250 30 1-2 min
dE2 Defrosting time-out on second evaporator; deter-
mines maximum duration of defrosting on 2nd
evaporator
1...250 30 2min
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 4/12

PAR. DESCRIPTION RANGE DEFAULT VALUE* LEVEL** U.M.
dSt End of defrost temperature (determined by evapo-
rator probe) -50.0...150 8.0 1-2 °C/°F
dS2 End of defrost temperature (determined from
probe on 2nd evaporator) -50.0...150 8.0 2 °C/°F
dPO Determines when instrument starts up if the
defrosting cycle must be activated (if the tempera-
ture on the evaporator allows this) y=defrosting
activated at start-up n=defrosting not activated at
start-up
n/y n 1-2 flag
tcd minimum time for each compressor state before
defrosting “Ontime if >0; “Offtime if >0 -31...31 0 2 min
Cod Compressor “Off” time before defrost cycle. The
compressor is not turned on if a defrost cycle is
expected in the time indicated by the parameter.
0=Function excluded
0...60 0 2 min
Fan controller-FAn label Defrosting controller-dEF label
FPt Determines if “FSt” and “Fot” are expressed as
absolute values or in relation to set point
0=absolute value; 1=value related to set point
0/1 0 2 flag
FSt Fan stop temperature. Temperature limit that, if
exceeded by the value read by the evaporator
probe, stops the fans.
-50.0...150.0 2.0 1-2 °C/°F
Fot Fan start temperature. If the temperature read by
the evaporator probe is lower than the set value
the fans remain off.
-50.0...150.0 -50.0 2 °C/°F
NOTE: At level 1 the folders will only display all the level 1 parameters. At level 2 the folders will only display all the
level 2 parameters. The symbol 1-2 indicates the parameters that are displayed at both menu levels
FAd Fan activation intervention differential. (see “FSt”,
“Fot”) 1.0...50.0 2.0 1-2 °C/°F
Fdt Delay before fan activation after defrosting 0...250 01-2 min
dt Dripping time 0...250 01-2 min
FCO Disables fans with compressor off (Off)
y = fans active (with thermostat; in response to
value read by defrost probe, see “FSt” parameter);
n = fans off;
dc = duty cycle (using parameters “Fon” and “FoF”)
n/y/dc y 1-2 flag
dFd Disables evaporator fans. y=fans disabled n=fans
enabled y/n y 1-2 flag
Fod Enables fan stop with door open and fan re-start
when door is closed (if fans were on).
n=fans stop;
y=fans unchanged
n/y n 2 flag
FdC Fan shut-down delay after compressor stop
0=function excluded 0...99 0 2 min
Fon Fan start-up time in Duty Cycle mode; valid for
FCO=dc and H42=1 (presence of probe 2) 0...99 0 2 min
FoF Fan shut-down time in Duty Cycle mode; valid for
FCO=dc and H42=1 (presence of probe 2) 0...99 0 2 min
Alarms-AL label
Att Determines if “LAL” and “HAL” are expressed as
absolute values or as a differential related to the
set point
0=absolute value
1=value related to set point
0/1 0 2 flag
AFd Alarm differential 1.0...50.0 2.0 1-2 °C/°F
HAL (4) Maximum alarm. Temperature limit (whose
absolute or relative value status is regulated by
“Att”) above which the alarm is activated.
LAL...150.0 50.0 1-2 °C/°F
LAL (4) Minimum alarm. Temperature limit (whose
absolute or relative value status is regulated by
“Att”) below which the alarm is activated.
-50.0...HAL -50.0 1-2 °C/°F
PAO (5) Alarm exclusion time after start-up of instrument
following a power failure 0...10 01-2 hours
dAO Alarm exclusion time after defrosting 0...999 01-2 min
“dd (2) dE1...dE8; daily defrost start time
ONLY VISIBLE WHEN dCt=3 0...23/0...59 24 1-2 hours/min
“Fd (2) F1...F8 festive defrost start time
ONLY VISIBLE WHEN dCt=3 0...23/0...59 24 1-2 hours/min
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 5/12

LINK PARAMETERS - Label Lin - EWDR 985/CSK (LX) ONLY - SEE PAGE 12
folder nAd For each day of the week d0…d6/Ed parameters Evento E00…E03 can be displayed/programmed (see also nad table).
PAR. DESCRIPTION RANGE DEFAULT VALUE* LEVEL** U.M.
OAO High and low temperature alarm delay after dis-
abling digital input (door closed) 0...10 0 2 hours
Alarms-AL label
tdO Time out after alarm signal when digital input is
disabled (door open) 0...250 0 2 min
tAO (5) Temperature alarm delay time 0...250 01-2 min
dAt Alarm for defrosting ended due to time out.
n=alarm not active y=alarm active n/y n 2 flag
EAL External alarm to lock controllers n=does not lock,
y=locks n/y n 2 flag
AOP Polarity of alarm output: 0 = alarm active and out-
put disabled; 1 = alarm active and output enabled 0/1 1 2 flag
PbA Configuration of temperature alarm on probe 1
and/or 3:
0=on probe 1 (thermostat control)
1=on probe 3 (display)
2=on probe 1 and 3 (thermostat control and display)
3=on probe 1 and 3 (thermostat control and display) on external threshold
0/1/2/3 0 2 num
SA3 Probe 3 alarm set point -50.0...150.0 50 2 °C/°F
dA3 Probe 3 alarm differential -30.0...30.0 2.0 2 °C/°F
dEA DEA= device number within the family
(valid values: from 0 to 14)
FAA FAA= device family (valid values: from 0 to 14)
The value couple FAA and dEA represents the network address of the device and it is indicated in the following way: "FF.DD" (where FF=FAA and DD=dEA).
0...14 01-2 num
Night & Day Control- nAd label
E00 Functions enabled during events;
0=control disabled 1=reduced set point
2=reduced set point+light
3=reduced set point+light+aux / 4=instrument off
0...4 01-2 num
E01 Hours/minutes of start of intervention. Starting
from this time, the “NIGHT” mode will be enabled.
The duration is determined by EO2
0...23/0...59 01-2 hours/min
E02 Duration of event. Sets the duration of the event
that begins at time E01 determined by value E00 0...99 01-2 hours
E03 (6) Blocking/unblocking daily or holidays defrosting.
0= “work days” defrost sequence defined by
parameters dE1...dE8;
1= “festive/holidays” defrost sequence defined
by parameters F1...F8
0/1 0 1-2 flag
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 6/12
Light & digital inputs Lit Label
*EWDR 985/CSK (LX) ONLY
dSd Light relay enable from door switch.
n = door open, light does not turn on;
y = door open, light turns on (if it was off)
n/y y 2 flag
dLt Light relay disabling delay after closing door if
“dSd”=y 0...31 0 2 min
OFL Light relay disabled even if disabling delay
“dLt” is active n/y n 2 flag
dAd Delay in enabling digital input 0...255 0 2 min
dOd Digital input switches off loads n/y n 2 flag
dOA* Forced behaviour from digital input:
0=no enabling; 1=compressor enabled
2=fans enabled;
3=compressor and fans enabled
0/1/2/3 0 2 num
PEA* Enables forced behaviour from door light and/or
from external alarm
0=function disabled; 1=associated with door light
2=associated with external alarm;
3=associated with door light and external alarm
0/1/2/3 0 2 num
dCO* Delay in enabling compressor with consensus 0...250 0 2 min
dFO* Delay in enabling fans with consensus 0...250 0 2 min
Communication
Add label

PAR. DESCRIPTION RANGE DEFAULT VALUE* LEVEL** U.M.
NOTE: It is mandatory to power cycle (switch off and back on) the controller anytime the parameters in CnF
folder have been changed to prevent malfunctioning and ensure correct configuration.
LOC Keyboard locked. Parameters can still be pro-
grammed.
n= keyboard not locked
y= keyboard locked
n/y n 1 flag
PA1 Contains the password for level 1 parameters.
Enabled if not 0 0...250 0 1 num
PA2 Contains the password for level 2 parameters.
Enabled if not 0 0...250 0 2 num
ndt Display with decimal point.
n= without decimal point (only whole numbers)
y= with decimal point
n/y n 1-2 flag
CA1 Temperature value to be added to that read by
probe 1 as specified by parameter CAI -12.0...12.0 01-2 °C/°F
CA2 Temperature value to be added to that read by
probe 2 as specified by parameter CAI -12.0...12.0 01-2 °C/°F
CA3 Temperature value to be added to that read by
probe 3 as specified by parameter CAI -12.0...12.0 01-2 °C/°F
Display - diS label
CAI Intervention of offset on display, thermostat con-
trol or both:
0 = only modifies the temperature displayed
1 = adds to the temperature used by controllers
not the temperature displayed that remains
unchanged.
2= adds to temperature displayed that is also
used by controllers.
0/1/2 22 num
LdL Minimum value that can be displayed -55.0...140 -50.0 2 °C/°F
HdL Maximum value that can be displayed -55.0...302 140.0 2 °C/°F
ddL display during defrosting:
0= displays temperature read by thermostat
control probe
1= displays temperature read entering defrost
cycle until set point is reached
2= displays “dEF” label during defrosting until
set point is reached (or when Ldd expires)
0/1/2 1 1-2 flag
Ldd Time out for unlocking display (with ddL=2) if
defrosting lasts too long 0...255 01-2 min
dro (7) Select °C or °F to display temperature: 0= °C 1= °F 0/1 01-2 flag
ddd Value to be displayed:
0 = Set point
1 = probe 1 (thermostat control)
2 = probe 2 (evaporator)
3 = probe 3 (display)
0/1/2/3 12 num
H11 (8) Configuration of digital inputs/polarity:
0= disabled 1 = defrost
2 = reduced set point 3 = auxiliary
4 = door switch 5= external alarm
6= disables storage of HACCP alarms
7= stand-by (On/Off) 8= maintenance request
-8...8 42 num
H08 Stand-by operating mode
0= only display switched off;
1= display on and controls locked;
2= display off and controls locked
0/1/2 22 num
H00 Selects probe, PTC or NTC 0= PTC 1= NTC
It is mandatory to power cycle (switch off and back on) the
controller anytime this parameter has been changed to
prevent malfunctioning and ensure correct configuration.
0/1 11-2 flag
H02 Quick activation time for functions with configured
buttons. Not possible for aux (time expected = 1
second)
0...15 52 sec
H06 Button/input aux/door switch light active when
instrument is off n/y y2 flag
Configuration- CnF label
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 7/12

PAR. DESCRIPTION RANGE DEFAULT VALUE* LEVEL** U.M.
NOTE: At level 1 the folders will only display all the level 1 parameters. At level 2 the folders will only display all the
H12 (8) Configuration of digital inputs/polarity
Same as H11 -8...8 02 num
H21 Digital output configurability:
0= disabled 1= compressor
2= defrosting 3 = fans
4 = alarm 5= auxiliary
6= stand-by 7= light
8= buzzer 9 = defrosting on 2nd evaporator
EWDR 983
H21 Digital output configurability C 0...9 1 2 num
H24 Digital output configurability B 0...9 2 2 num
EWDR 985
H21 Digital output configurability C 0...9 7 2 num
H22 Digital output configurability B 0...9 2 2 num
H23 Digital output configurability D 0...9 3 2 num
H24 Digital output configurability A 0...9 1 2 num
Configuration- CnF label
H25 (9) Auxiliary output configurability 12Vc/20mA (E)
Same as H21(alarm default) 0...9 42 num
H31 UP button configurability
0=disabled 1=defrosting
2=auxiliary 3=reduced set point
4=HACCP alarm reset 5=disables alarm HACCP
6=light 7=stand-by
8= maintenance request
H32 DOWN button configurability
Same as H31(0=disabled default) 0...8 02 num
H33 ESC button configurability
Same as H31(0=disabled default) 0...8 02 num
H34 AUX button configurability
Same as H31(0=disabled default) 0...8 0 (EWDR 983)
6 (EWDR 985)
1-2 num
0...8 12 num
H41 Presence of control probe:
n= not present y= present n/y y2 flag
H42 Presence of evaporator probe:
n= not present y= present n/y y2 flag
H43 Presence of display probe:
n= not present y= present (display probe)
2EP= present (probe on 2nd evaporator)
n/y/2EP y2 flag
H45 Start of defrosting for dual evaporator:
0= defrost activated if temperature of 1st evapora-
tor<dSt
1= defrosting activated if at least one of the
conditions is met:
-temperature 1st evaporator<dSt
-temperature 2nd evaporator<dS2
2= defrosting activated if both conditions are met:
-temperature 1st evaporator<dSt
-temperature 2nd evaporator<dS2
0/1/2 12 num
PA2 in the CnF folder when you enter the correct password you can access level 2 parameters from label PA2 by pressing the
“set” button
rEL Device version. Read only parameter 0...1999 /1 /
tAb Parameter table; Reserved; Read only parameter 0...1999 /1 /
Copy Card Fpr label
UL Transfer of parameter map from instrument to
Copy Card
dL Transfer of parameter map from Copy Card to
instrument
Fr (10) Formatting. Cancels all data in the Copy Card
//1 /
//1 /
//1 /
NOTES:
(1) See Duty Cycle diagram
(3) In this group ‘evaporator’ always refers to ‘evaporator 1‘
(4) If relative values are present (par. Att=1) parameter HAL is set to positive values and the parameter LAL is set to negative values (-LAL)
(5) Refers exclusively to high and low temperature alarms
(6) Does not affect defrosting at set times like Every Day event (same defrost sequence for working days/holidays).
(7) when changing from °C to °F or vice versa the set points, differentials, etc. are NOT converted (for example, “set=10 °C becomes set=10°F”)
(8) CAUTION: positive or negative values change polarity, Positive values: active input when contact is closed; Negative values: active input when contact is open.
(9) Auxiliary output 12Vc/24mA
(10) If the Fr parameter is used, the data previously stored on the Copy Card will be permanently lost. This operation cannot be undone
(2) In the dEF folder there are two folders: “dd” (daily defrost) and “Fd” (festive defrost); the first folder includes the parameters dE1...dE8 (start of daily defrost) and the
second folder includes the parameters F1...F8 (start of festive defrost). The two folders can only be seen if parameter dit=3 and RTC is declared present.
NOTE: Do not confuse the days d0...d6 related to the nAd folder with dE1...dE8 daily defrost.
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 8/12

MACHINE STATUS MENU
* Value: to be compiled manually by user with any custom settings (if different from default settings)
** Level: indicates the visibility level of parameters accessed using a password (see relevant paragraph)
*** PA2 is visible at level 1 in the CnF folder whereas it can be modified at level 2 in the diS folder
RESPONSIBILITY AND RESIDUAL RISKS
Eliwell shall not be liable for any damages deriving from:
- installation/use other than that prescribed and, in particular, which does
not comply with the safety standards specified in the regulations and/or
those given herein;
- use on boards which do not guarantee proper protection against electric
shock, water or dust when assembled;
- use on boards which allow dangerous parts to be accessed without the
use of tools;
- tampering with and/or alteration of the product;
- installation/use on boards that do not comply with the standards and
regulations in force.
DISCLAIMER
This document is the exclusive property of Eliwell and cannot be repro-
duced and circulated unless expressly authorized by Eliwell.
Although Eliwell has taken all possible measures to guarantee the accuracy
of this document, it declines any responsibility for any damage arising out
of its use.
The same applies to any person or company involved in preparing and writ-
ing this document.
Eliwell reserves the right to make any changes or improvements without
prior notice and at any time.
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 9/12
MENU nAd
if alarm(s)
present
AL
Pb1
Pb2
SEt
alarms
Pb1 value
Pb2 value
SEt value
set
change SEt
value
show alarms
if present
press and release
(single press)
Pb3 Pb3 value if present
rtc h00
d00
'00
2 sec
2 sec
set
hours
set
days
set
minutes
if present
d00= Sunday
d2
Ed
change value
E00…03
press and release
(single press)
d3
d1 E01
E00
E02
set
E01
set
E00
set
E02
nad
E03 set
E03
as above
as above
as above
day 1 = Sunday
day 2 = Monday
day 3 = Tuesday
Every Day = all days
FnC FUNCTION FOLDER
The FnC folder (last folder visible from the Programming Menu, level 1) contains
the following functions.
They are activated using the “set” button
If the unit is switched off, the function labels go back to their default status.
Function
Reduced set point
Aux
**default
Function label
NOT ACTIVE
SP**
AoF
Label
Function
ACTIVE
OSP
Aon
CONDITIONS OF USE - PERMITTED USE
For safety reasons the instrument must be installed and used in accor-
dance with the instructions supplied. Users must not be able to access
parts with dangerous voltage levels under normal operating conditions.
The device must be suitably protected from water and dust depending on
the specific application and only be accessible using special tools (except
for the front keypad).
The device is ideally suited for household use and/or similar use in the
refrigeration sector and has been tested with regard to safety in accor-
dance with the European harmonized reference standards. It is classified
as follows:
• as an automatic electronic control device to be independently mounted
as regards its construction;
• as a 1 B type operated control device as regards its automatic operating
features;
• as a Class A device as regards the category and structure of the soft-
ware.
UNPERMITTED USE
The use of the unit for applications other than those described above is
forbidden. It should be noted that the relay contacts supplied with the
device are functional and therefore exposed to potential faults. Any pro-
tection devices required to comply with product requirements or dictated
by common sense due to obvious safety reasons should be installed
externally.

CP
dEF
FAn
AL
level 1 par
level 1 par
level 1 par
level 1 par
PA10
set PA1 value
Add
diS
CnF
Fpr
level 1 par
level 1 par
level 1 par
level 1 par
PA2
level 2 par
level 2 par
level 2 par
level 2 par
level 2 par
level 2 par
level 2 par
CP
dEF
FAn
AL
Add
diS
CnF
PA20
set PA2 value
level 2
change
par value
scroll
parameters
press for 5 sec
dd
Fd
level 2 par Lit
level 2 par nAd
nAd level 1 par
dd
Fd
level 1
FnC functions scroll
functions
activate/disactivate
function
level 2 par Lin
985/CSK
PROGRAMMING MENU
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 10/12
MAX/MIN ALARMS
Minimum temperature alarm
Maximum temperature alarm
LAL
AFd
HAL
AFd
1
Setpoint - LAL
AFd
Off
Setpoint + HAL
AFd
2
Setpoint - LAL + AFd Setpoint + HAL - AFd
Setpoint
Temperature lower than or equal to LAL (LAL with sign) Temperature lower than or equal to Set point + LAL*
Temperature greater than or equal to Setpoint + HAL**
Temperature greater than or equal to HAL (HAL with sign)
Maximum temperature alarm
release
Minimum temperature alarm
release
Temperature higher than or equal to LAL + AFd Temperature greater than or equal to Setpoint + LAL + AFd
Temperature lower than or equal to Setpoint + HAL - AFd
Temperature lower than or equal to HAL - AFd
Temperature expressed as an absolute value (par “Att”=0) Abs(olute) Temperature in relation to set point (par “Att”=1) rEL(ative)
if Att=reL(ative) LAL must be negative: therefore [Setpoint + LAL]
is equal to [Setpoint - LAL]
MAX-MIN
ALARMS
*if LAL is negative it will be subtracted from the Setpoint
**if HAL is negative it will be subtracted from the Setpoint

WIRING DIAGRAM EWDR 983-985 (/CS LX)
SHARED TERMINALS
1-2 Probe input 1 (room probe)
1-3 Probe input 2 (evaporator probe)
1-4 Probe input 3 (display or 2nd evaporator probe)
5-6 Digital input 1
5-7 Digital input 2
8-9 Auxiliary output 12Vc/20mA (E) see par. H25
(alarm default)
10-12 RS485 network (/CS LX models only)
13-14 Power supply 230Va
A TTL input for Copy Card
EWDR 983 /CS (LX)
15-16* N.O. relay output (B) see par. H24 (defrost default)
15-17* N.C. relay output (B) see par. H24 (defrost default)
20/21-22*N.O. relay output (C) see par. H21 (compressor default)
19-22* N.C. relay output (C) see par. H21 (compressor default)
EWDR 985 /CS (LX)
15-16* N.O. relay output (A) see par. H24 (compressor default)
17-18* N.O. relay output (B) see par. H22 (defrost default)
17-19* N.C. relay output (B) see par. H22 (defrost default)
20/21-22*N.O. relay output (C) see par. H21 (light default)
23-24* N.O. relay output (D) see par. H23 (fan default)
* Relay characteristics
EWDR 983/CS (LX)
Relay output (C) 16A 1hP 250Va
Relay output (B) 8A 1/2 hP 250Va
EWDR 985/CS (LX)
Relay output (C) 15A 1hP 250Va
Relay output (A) (B) (D) 8(3)A 1/2hP 250Va
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 11/12
Ont, OFt parameters programmed
for Duty Cycle
Ont OFt Compressor output
0 0 OFF
0 >0 OFF
>0 0 ON
>0 >0 dc
OUT
On
Off
OFtOnt Ont
The error condition for probe 1
(compressor) causes the following:
- E1 code appears on display
- the controller is activated as
indicated
by the “Ont” and “OFt” parame-
ters if
programmed for Duty Cycle
DUTY CYCLE DIAGRAM
The technical characteristics in this document concerning
measurements (range, accuracy, resolution, etc.) refer to the
instrument in the strictest sense and not to any accessories
provided such as probes, for example. This means that an
error introduced by the probe is added to any error that is in
the instrument.
EWDR 983-985 (/CS LX)
123456789 10 11 12
13 14 17 19 20 21 22 23
TTL
A
(A) (B) (C) (D)
AUX OUT
12VC/20mA
Power
Supply
Pb1
Pb2
Pb3
D.I.1
D.I.2
(E)
EWDR 983 (/CS LX)
13 14 15 16 17 18 19 20 21 22 23 24
(B)
Power
Supply
EWDR 985 (/CS LX)
(C)
1615
RS 485
+ - GND
H24 H22 H21 H23
H24 H21
cod. 9IS43068 - GB - rel. 3/08 © Eliwell Controls s.r.l. 2008 All rights reserved.
Eliwell Controls s.r.l.
Via dell’Industria, 15 • Zona Industriale Paludi • 32010 Pieve d’Alpago (BL) ITALY
Telephone [phone] • Facsimile [phone]
Sales [phone] (Italy) • [phone] (other countries) • E-mail [email protected]
Technical helpline [phone] • E-mail [email protected]
www.eliwell.it

WIRING DIAGRAM EWDR 985/CSK (LX) - LINK
TERMINALS
1-2 Probe input 1 (room probe)
1-3 Probe input 2 (evaporator probe)
1-4 Probe input 3 (display or 2nd evaporator probe)
5-6 Digital input 1
5-7 Digital input 2
8-9 Link (8= +; 9= -)
10-12 RS485 network
13-14 Power supply 230Va
A TTL input for Copy Card
15-16* N.O. relay output (A) see par. H24 (compressor default)
17-18* N.O. relay output (B) see par. H22 (defrost default)
17-19* N.C. relay output (B) see par. H22 (defrost default)
20/21-22* N.O. relay output (C) see par. H21 (light default)
23-24* N.O. relay output (D) see par. H23 (fan default)
* Relay characteristics
Relay output (C) 15A 1hP 250Va
Relay output (A) (B) (D) 8(3)A 1/2hP 250Va
Link-label Lin
L00 Selects the instrument as Master
(0), Slave (from 1 to 7). 0...7 0 2 num
L01 Number of Slaves in the Network Refers to Master
only Number of Slaves in network (from 0 to 7).
For the Slaves leave value =0
0...7 0 2 num
L03 Refers to Master and Slave Defrosting
Simultaneous/sequential. Master: n = sequential;
y = simul taneous. Slave: y = accept; n = ignore.
n/y n 2 Flag
L04 Refers to Slave only. Distributed display.
n = Slave displays local values;
y = Slave displays Master display
n/y y 2 Flag
L05 Activation of Master network functions: n = does
not ask Slaves for activation of remote functions;
y =asks Slaves for activation of remote functions.
Slave: n = ignores activation of remote functions
from Master; y = accepts activation of remote
functions from Master.
n/y n 2 Flag
L06 Shuts down resources (compressors, fans, etc) at
end of defrosting. n=no; y=yes n/y y 2 Flag
EWDR 983-985/CS (LX) - EWDR 985/CSK (LX) 12/12
EWDR 985/CSK (LX)
123456789 10 11 12
TTL
RS 485
A
(A) (B) (C) (D)
LINK
Power
Supply
Pb1
Pb2
Pb3
D.I.1
D.I.2
13 14 15 16 17 18 19 20 21 22 23 24
+ - GND
+ -
H24 H22 H21 H23
LINK
The Link function is used to connect up to
8 instruments (1 Master device and 7 slave
devices). The distance between one device
and another must be 7 metres maximum
whereas the maximum distance between
the first and last instrument in the network
must be approximately 50m.
NOTE: the serial link between the devices is
powered.
Master
Instrument that controls the networks and
sends commands to the Slaves. The Master
is selected using parameter L00 (the value 0
defines the Master)
Slave
Instrument(s) with own controllers that also
perform(s) commands issued by the Master
(with parameters L03..L06).
Defrosting
The Link network controls defrosting. The
Master sends the defrost command which
can be performed synchronously (at the
same time) or sequentially (one defrost
after another) without affecting the normal
protections or delays for each instrument
(see parameter L03).
Other Functions
The Master can also activate the functions
associated with buttons or the Digital Input
for all the Slaves: switching lights on/off,
alarm silencing, auxiliary set point, auxiliary
relay, stand-by (on/off) and functions relat-
ed to Night & Day controller (see parame-
ter L05).
The Master can also synchronize the Slave
displays with the Master device display (see
parameter L04).
NOTE: synchronized defrosting refers to
actual defrosting and not to dripping and
subsequent defrosting. The defrost LED on
the Slave units blinks when synchronized
defrosting has terminated and the Slaves
are awaiting for the thermostat control to
be enabled by the Master.
The functions are associated with the
instruments by correctly setting the para-
meters (see the parameter table for the
“Lin” label folder)
LINK ALARM
In the event of a master/slave communica-
tion failure, the No Link alarm is signalled.
This alarm condition can be viewed on the
master and slaves, if present, in the “AL”
folder with the “E7” label.
NOTE:
•The E7 error is signalled after approx. 20
seconds in “no link” condition to avoid
any link disturbance causing communica-
tion errors.
•The E7 error is also signalled for address-
ing conflicts when:
a) the number of Slaves set on the MAS-
TER is different from the actual number of
Slaves on the network
b) 2 or more Slaves have the same
address.
•In the event of addressing errors, E7 will
not be shown, but the display will blink.