Eliwell Coldface EWHT800LX Series Manual
EWHT800LX
Controllers for cold rooms and curing rooms for
on-board installation
EWHT800LX 2 - EN
English
INTRODUCTION
The Coldface EWHT800LX series controls the temperature and humidity of a static or ventilated cold
room. The curing cycle consists of 1 program with 8 customisable climate proles. The instrument
controls positive and negative cold rooms and is capable of managing a double evaporator and con-
denser probes. Coldface has 8 congurable relays, 4 low-voltage digital inputs congurable for door
switch, alarm and pressure. Models are available with clock with yearly calendar and HACCP event
logging. The instrument can be connected to TelevisSystem via the optional plug-in module. The box
allows for installation of a power contactor or a disconnecting switch with door lock.
This summary document contains basic information about the standard models EWHT800LX. For fur-
ther information and different congurations, refer to the complete user manual p/n 9MA10024
which can be downloaded free of charge from the www.eliwell.it website.
MECHANICAL INSTALLATION
Manual
defrost
Display
HACCP alarms
if function active
Display alarms
if active
Functions menu
LOC keyboard lock
rSE activate reduced Set
rPA Pressure switch alarms
rEd disable HACCP
rHC reset HACCP alarms
nAD Day/Night
Aut Automatic regulation
St Start Climate Prole
rSt Reset Climate Prole
System
info
SP1
-18.9
rtc
18.55
Pb1
-20.6
set
time and date
display
probe values
display
probe values
modifty
SetPoint value
conrm with
1 sec
1 sec
1 sec
3 sec
3 sec
ON / OFF function
Pb2
-20.6
InS
USR
PAr
LitE
SEt
0.0
see manual
see manual
diF
2.00
HSE
50.0
modify
value
conrm
with
SetPoint & Probes
Parameters
NAVIGATION DIAGRAM
•
Screw the backplate to the wall
using 4 screws (not supplied) to
match the holes A...D.
• Shut the door and cover the
screws with the corresponding plate
• Drill holes in the top (or bottom) of the backplate to pass the
high and low-voltage wires through.
Cable clamps must be no bigger
than size PG29
• Remove the protective plate
on the right of the door
• Take out the 2 screws supplied
and then open the cover.
3 - EN EWHT800LX
English
+
-
+12V
I
I (4...20mA)
Pb5Pb5
51 52 53
GND
Analogue
Output - AO
Analogue
Output - AO
39 40 41
0...20mA
4..20mA
GND
39 40 41
0...10V PWM
10V 55mA
485+
GND
485-
RS-485
RS-485
Keyboard
Copy
Card
EWHT800 LX
14 15 16
Pb3
Pb4
Pb2
Pb1
DI4 DI3 DI2 DI1
Power
Supply
100...240V
17 18 19 20 21
22 23
24
31
32
39 40 41
45
46 47 51
52
53
Analogue
Output - AO
Pb5
TTL
25 26 27 28 29 30
64 65 66 67
68 69 70 71
54 55 56 57 59 60 61 62
Removable
Terminals
OUT8 OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1
H28 H27 H26 H25 H24 H23 H22 H21
Relais
Parameters
Default configuration
LINE
NEUTRAL
Faston
2 3 4 5
10 11 12
13
8 9
AUX 1
AUX 1
RS485 connection to
TelevisSystem available
with optional plug-in
module only
Copy
Card
Bus
Adapter
RS 485
TTL
AUX 2
AUX 2
+
+
-
-
ELECTRICAL CONNECTIONS
Output relay (default settings)
•OUT1 = Dehumidication
•OUT2 = Humidication
•OUT3 = Heating
•OUT4 = Compressor
•OUT5 = Evaporator fan
•OUT6 = Auxiliary 1 (ventilation fans)
•OUT7 = Auxiliary 2 (destratication fans)
•OUT8 = Light
Probe inputs (default settings)
• Pb1 = NTC cold room probe
• Pb2 = NTC defrost end probe
• Pb3 = NTC (de)stratication probe
• Pb4 = NTC condenser fan probe
• Pb5 = Humidity probe / pressure transducer
4...20mA
To switch between NTC/PTC probe types use pa-
rameter H00. SWITCH OFF AND RESTART THE
INSTRUMENT after making the change
Digital Inputs (default settings)
• D.I.1 = Door switch
• D.I.2 = Alarm
• D.I.3 = Low pressure
• D.I.4 = High pressure
Analogue Output (default settings)
• AO = 0-10V for piloting external fan module
Serials
• TTL for connection to Copy Card
• TTL for connection to TelevisSystem
• RS485 available ONLY with optional Plugin
module for connection to TelevisSystem.
Important! Make sure the machine is switched
off before working on the electrical connections.
• Removable screw terminals: electric cables
of 2.5 mm2 maximum cross-section (one wire
per terminal in the case of power connections).
• FASTONS: single row of fastons in series.
EWHT800LX 4 - EN
English
DISPLAY
UPPER DISPLAY
• 3 digits and - sign:
View:
• Operating value
• parameters label
• alarms, functions
If the upper display is blinking
it means that the value of the
lower display can be modied
LOWER DISPLAY
• 4 digits
View:
• parameters value
• probe values
• function state
HACCP models
• time
If the lower display is blinking it means that the displayed
value can be modied
A
B
C
D
F
E
H
G
6
5
10 98 7
121314
UPPER DISPLAY
11
LOWER DISPLAY
CLIMATE PROFILE STEP
4
321
%
R.H.
No. LEDs colour ON
BLINKING
OFF
1 EVAPORATOR FANS yellow Fans ON Forced ventilation Fans OFF
2 CONDENSER FANS yellow Fans ON / Fans OFF
3
VENTILATION FANS
AUXILIARY 1 (AUX))
yellow
VENTILATION FANS
AUX1 ON
/
VENTILATION FANS
AUX1 OFF
4
DESTRATIFICATION FANS
AUXILIARY 2 (AUX)
yellow
DESTRATIFICATION FANS
AUX2 ON
/
DESTRATIFICATION FANS
AUX2 OFF
5 HACCP red HACCP alarm Not displayed No alarm
6 ALARM red Alarm Silenced No alarm
7 COMPRESSOR yellow Compressor ON Delay Compressor OFF
8 DEFROST yellow defrost drip
No defrost
9 HEATING yellow Heating ON / Heating OFF
10 HUMIDIFICATION yellow Humidify /
11 DEHUMIDIFICATION yellow Dehumidify /
12 LIGHT yellow Light ON / Light OFF
13
ENERGY
SAVING
yellow Energy saving ON / Energy saving OFF
14 NIGHT & DAY yellow Night & Day ON / Night & Day OFF
STEP CLIMATE PROFILE green see Climate Proles
ON: function / alarm active; OFF: function / alarm NOT active
LEDs
5 - EN EWHT800LX
English
KEYS
USER INTERFACE
How to modify the SetPoint
• Press and release the SET key. The upper display will show SP1, the lower display will indicate the
current SetPoint value
• Press and release the SET key once more. The upper display will show SP1 blinking
• Use the UP & DOWN keys to adjust the SetPoint value
•
Press the ESC key several times (or keep it pressed) to return to the normal display
How to read the probe values
• Press and release the SET key. The upper display will show SP1, the lower display will indicate the
current SetPoint value
• Press and release the DOWN key. If the RTC clock is present, the time will be shown in the lower display
• Press and release the DOWN key once more. The upper display will show Pb1, the lower display
will indicate the value read by the room probe
• Press and release the DOWN key once more to read the value of probe Pb2 and Pb3
• Press the ESC key to return to the normal display
How to modify the Lite Parameters
The Lite parameters are the most useful parameters and are described in this document, in
the section Parameters Table.
1) Press and hold the SET key for 3 seconds until the display shows PAr / Lite
2) Press and release the SET key once more. The upper display will show the rst parameter*, the
lower display will indicate the current parameter value
3) Using the UP & DOWN keys, nd the parameter that you wish to modify
4) Press and release the SET key once more. The upper display will show the name of the blinking
parameter
5) Use the UP & DOWN to adjust the parameter value
6) Press and release SET to save the parameter value
7) Return to step 3) or press ESC several times to return to the normal display
Nr. KEY press and release press and hold for about 3 seconds Notes
A
p UP
•Alarms Menu (always visible)*
• Scroll
• Increase values
/
*HACCP alarms/system alarms
if present
B ESC
• Exit
• Functions menu
• Manual defrost
• Return to Main Menu
C SET
• Display SetPoint / probe values / time*
• Conrm values
• Access value edit mode
(upper display blinking)
Access Parameter Edit mode
D
q DOWN
• Scroll
• Decrease values
• Display instrument INFO**
/ **See Technical Support
E
START/STOP
RESET
• Start Climate Prole
• Stop Climate Prole
• Reset Climate Prole See Climate Proles
F ON/OFF / Switch device On/O
G LIGHT / Switch light on/o
H AUX1/2 Activate destratication fans Activate destratication fans
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