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 proles. The instrument

controls positive and negative cold rooms and is capable of managing a double evaporator and con-

denser probes. Coldface has 8 congurable relays, 4 low-voltage digital inputs congurable 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 congurations, 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 Prole

rSt Reset Climate Prole

System

info

SP1

-18.9

rtc

18.55

Pb1

-20.6

set

time and date

display

probe values

display

probe values

modifty

SetPoint value

conrm 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

conrm

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 = Dehumidication

•OUT2 = Humidication

•OUT3 = Heating

•OUT4 = Compressor

•OUT5 = Evaporator fan

•OUT6 = Auxiliary 1 (ventilation fans)

•OUT7 = Auxiliary 2 (destratication fans)

•OUT8 = Light

Probe inputs (default settings)

• Pb1 = NTC cold room probe

• Pb2 = NTC defrost end probe

• Pb3 = NTC (de)stratication 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 modied

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 modied

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 Proles

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*

• Conrm 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 Prole

• Stop Climate Prole

• Reset Climate Prole See Climate Proles

F ON/OFF / Switch device On/O

G LIGHT / Switch light on/o

H AUX1/2 Activate destratication fans Activate destratication fans

EWHT800LX 6 - EN

English

LITE PARAMETER TABLE

This section describes the most useful parameters, which are contained in the 'Lite' folder. For a description of all User (USr) and Installer (Ins)
parameters, see the user manual. Note: the 'Lite' folder parameters are NOT divided into subfolders and are always visible (no access password
is required). The same parameters are also visible in the respective folders 'Compressor', 'Fans', etc. (also indicated here for easy reference) in the
User (USr) and Installer (Ins) parameters menu.

PARA.

DESCRIPTION

RANGE

DEF. / U.o.M.

SP1

SETPOINT Control value within the range between the minimum set point LSE and the maximum set point HSE.

LSE...HSE

0.0 °C/°F

diF

Compressor relay activation dierential; the compressor stops on reaching the set point value (as indicated by the
regulation probe) and restarts at a temperature value equal to the set point plus the value of the dierential. Note:
the value 0 cannot be set.

0.1...30.0 2.0 °C/°F

HSE

Maximum value that can be assigned to the setpoint.

LSE...302

50.0 °C/°F

LSE

Minimum value that can be assigned to the setpoint.

-55.0...HSE

-50.0 °C/°F

SPH

Humidity setpoint. Minimum LSH value that can be assigned to the setpoint. Maximum HSH value that can be

assigned to the setpoint.

LSH...HSH 0.0 %RH

dbH

Humidity intervention half-band. Always positive.

0.0...50.0

5.0 %RH

dtY

Type of defrost.

0= electric defrosting - compressor o (OFF) during defrosting
1 = reverse cycle defrost (hot gas) - compressor ON during defrosting

2= Free: defrosting independently of compressor

0/1/2 0

dit

Interval between the start of two subsequent defrosting cycles.

0= function disabled (defrosting NEVER performed)

0...250 6 h

dEt

Defrost time-out; determines the maximum duration of the defrost cycle.

1...250

30 min

dSt

Defrost end temperature (determined by the evaporator probe Pb2).

-50.0...150

6.0 °C/°F

FSt

Fan stop temperature; if the evaporator probe reads a higher value than the set value, the fans are stopped. The
value is either positive or negative and, depending on parameter FPt, can be either the absolute temperature or

the temperature relative to the set point.

-50...150 6.0 °C/°F

Fdt

Fan activation delay after a defrosting cycle.

0...250

0 min

dt

Drip time.

0...250

0 min

dFd

Allows exclusion of the evaporator fans to be selected or not selected during defrosting. y = yes; n = no.

n/y

y

F09

Minimum setpoint for condenser fan speed.

-50.0...99.9

30.0 °C/bar

SFd

Temperature dierence for destratication fans. If the dierence |Pb1-Pb3| as an absolute value (positive number)

is greater than SFd, the destratication fans are started. They switch o when |Pb1-Pb3| is less than SFd -diS

(destratication fans dierential)

0...99.9 4.0 °C/°F

HAL

Maximum temperature alarm. Temperature value (intended either as distance from set point or as an absolute

value based on Att) which, if exceeded in an upward direction, triggers the activation of the alarm signal.

LAL...150 50.0 °C/°F

LAL

Low temperature alarm. Temperature value (intended as distance from the set point or as an absolute value based
on Att) which, when exceeded downwards, triggers the activation of the alarm signal.

-50.0...HAL -50.0 °C/°F

dAO

Temperature alarm exclusion time after defrost.

0...999

60 min

tAO

Time delay for temperature alarm indication. Refers to high/low temperature alarms only.

0...250

0 min

CA1
CA2
CA3

CA4

Calibration 1/2/3/4.
Positive or negative temperature value added to the value read by probe Pb1/2/3/4, according to the setting of

parameter “CA”.

-12.0...12.0 0 °C/°F

ddL

Display mode during defrost.
0 = displays the temperature read by the room probe Pb1;

1 = locks the reading at the temperature value read by room probe Pb1 when defrosting starts and until the next

time the set point value is reached;

2 = displays the label “deF” during defrosting and until the next time the set point value is reached (or until Ldd

has elapsed).

0/1/2 1

CONFIGURATION NOTE: the instrument must be switched o and restarted each time these parameters are modied.

H00

Probe type selection, PTC/NTC. 0 = PTC; 1 = NTC.

0/1

1

H09

Type of dehumidication. 0= with dehumidication relay; 1= with dehumidication relay + compressor; 2=

without dehumidication relay;

0/1/2 0

H42

Pb2 Evaporator probe presence. 0 = not present; 1 = present.

0/1

1

7 - EN EWHT800LX

English

THE INSTRUMENT ENABLES MODIFICATION OF OTHER PARAMETERS DIVIDED INTO USER
LEVEL (USr) and INSTALLER LEVEL (InS)

How to modify other parameters

Installer (InS) level access - User level access is similar:

Procedure applies only to more advanced applications. In this case the parameters are arranged in

folders (Compressor / Defrost / Fans etc)

1) Press and hold the SET key for 3 seconds until the display shows PAr / Lite

2) Use the UP & DOWN keys to select the parameter level concerned (Usr or Ins)

3) Press and release the SET key once more. The display will show the rst folder

4) Press and release the SET key once more. The upper display will show the rst parameter in the
folder, the lower display will indicate the current parameter value

5) Using the UP & DOWN keys, nd the parameter that you wish to modify

6) Press and release the SET key once more. The upper display will show the name of the blinking

parameter

7) Use the UP & DOWN keys to adjust the parameter value

8) Press and release SET to save the parameter value

9) Return to step 5) or press ESC several times to return to the normal display

OPERATION IN DEFAULT CONFIGURATION

The instrument is congured for negative cold. For positive cold, disable the evaporator probe Pb2
(set H42=0) and set relay OUT5 (parameter H25) = 6 (STANDBY) or 0 (DISABLED) to prevent con-

tinuous ventilation.

DEHUMIDIFICATION

Digital output OUT1 is congured as dehumidication relay. It switches on if the relative humidity is
greater than the Humidity Setpoint SPH + dbH (intervention half-band, always positive) and switches
off when the value is SPH. Dehumidication is activated by relay (H09=0).
SPH = 20.0°C Humidity Setpoint
dbH = 5.0°C intervention half-band, always positive

dFH = differential = 0 => dFH = dbH

HUMIDIFICATION

Digital output OUT2 is congured as humidication relay. It switches on if the relative humidity is
less than the Humidity Setpoint SPH - dbH (intervention half-band, always positive) and switches off
when the value is SPH. Humidication is disabled during defrost (dEH=0).

NOTE:

• Humidication and dehumidication are in Neutral Zone mode (H05=nE)

• Humidication and dehumidication are disabled during defrost (dEH=0)

HEATING

Digital output OUT3 is congured as heating relay. It is activated in Neutral Zone mode (H07=1).

Heating mode:

It switches on if the temperature is less than the Heating Setpoint StH - db (intervention half-band,
always positive) and switches off when the value is StH.
StH = 0.0°C Heating Setpoint
db = 2.0°C temperature intervention half-band, always positive

diH = differential = 0 diH = db

Cooling mode:

It switches on if the temperature is greater than the Cooling SetPoint SEt + db (intervention half-

EWHT800LX 8 - EN

English

band, always positive) and switches off when the value is SEt+db-diF.
SEt = 20.0°C Cooling SetPoint; db = 2.0°C temperature intervention half-band, always positive
diF = differential = 2.0

COMPRESSOR

Digital output OUT4 is congured as compressor relay. The compressor is active if the cold room

temperature detected by Pb1 exceeds the value of SP1 + differential diF. The compressor stops if the
cold room temperature detected by Pb1 falls below the SP1 value. The instrument includes compres-

sor on/off protection*

EVAPORATOR FANS

Digital output OUT5 is congured as evaporator fan relay and is activated in the required cases, ac­cording to delays and parameter settings*

Default fan settings

dt = 0 min. drip time; dFd = Y. Fans off during defrosting

LIGHT

Digital output OUT8 is congured as light relay. The light is activated by pressing and holding the
LIGHT key (G).
Since digital input D.I. 1 is congured as door switch, relay OUT8 (light) is activated when the door is
opened. The light also switches on with the instrument in standby*.

CONDENSER FANS

Probe Pb4 is congured as NTC condenser fan temperature probe. It is adjusted according to the
temperature of the probe (see parameter F02=1) in cooling mode (see parameter F01=C). The con­denser fan functions independently from the compressor, e.g. the fan is on even if the compressor is
off (see parameter F16=1)
Note: Analogue output AO is enabled as 0-10V output (F00=4) for piloting an external fan module.*

AUXILIARY (AUX1/2) - ventilation fans

Digital output OUT6 is congured as ventilation fans relay.
The auxiliary output is activated manually by pressing and releasing the AUX1-2 key (H)*

AUXILIARY (AUX1/2) - destratication fans

Digital output OUT7 is congured as destratication fans relay.
The auxiliary output is activated manually by pressing and releasing the AUX1-2 key (H). To prevent
stratication, e.g. when hot air inside the room rises to the ceiling and cold air falls to the oor, use
probe Pb3 as a stratication probe, positioning it in accordance with the room probe wiring (one
near the ceiling, the other near the oor). The fans switch on if Pb1-Pb3 as an absolute value (posi­tive value) is greater than the SFd “difference” value and switch off after SFd-diS temperature differ-

ential.

SFd = 4.0°C difference to be compared with |Pb1-Pb3|
diS = 1.0°C differential

MINIMUM / MAXIMUM PRESSURE SWITCH

Digital input D.I. 3 is congured to manage the minimum pressure switch (low pressure)
Digital input D.I. 4 is congured to manage the maximum pressure switch (high pressure)
Pressure switch setting (default)
PEn = 15. Maximum number of low/high pressure error messages
PEi=99 min. The time interval, in minutes, for counting errors indicated by PEn. If during this interval the
number of responses from the pressure switch exceeds the indicated threshold, the instrument will report
a pressure switch error and power to the compressor, defrost and fans will be cut off. See Alarms Table*
*FOR MORE INFORMATION READ the manual, p/n 9MA10024

9 - EN EWHT800LX

English

STEP colour ON

BLINKING

OFF

1...8 green

individual LED ON:

STEP in progress

individual LED:

duty cycle (STEP) not started

Note: only one LED can be

blinking

individual LED:

duty cycle (STEP) not started

LED 1,2,.., n (n=2,...7) ON:

Climate prole consisting of 2,3,..,7 STEPS

STEP 1,2,.., n completed successfully

ALL LEDs ON:

Climate prole consisting of 1 or 8 STEPs:

Climate prole completed successfully

ALL LEDs OFF:

climate prole ready to start

individual LED: cycle STOPPED

LED Climate Proles

CLIMATE PROFILES

EWHT800LX manages curing cycles by means of climate proles consisting of 8 STEPS.
Each STEP is dened by a set of 10 parameters.
The parameters determine STEP activation delays, duration, type of humidity and temperature regu­lation, setpoint for regulation, activation of relay AUX1/2 and procedures for completing one STEP

and switching to the next.

By default, regulation is disabled and the setpoints are all zero. The auxiliary relay is enabled
The climate prole START or STOP command is activated by briey pressing the START/STOP RESET
key (E).
The climate prole RESET command is activated by pressing and holding the START/STOP RESET key
(E).

Example

3-STEP climate prole and temperature/humidity regulation in Neutral Zone mode. The rst STEP

starts with a delay while the others start on completion of the previous STEP. The Humidity Setpoint

is xed whereas the Temperature Setpoint is variable.

T

emperature / Humidity

Time

Step1

Step2 Step3

Set Point
Humidity

Step 1

End Mode

Endurance 2

Endurance 3

Endurance 1

Delay 1

Set Point

TemperatureB

Active humidity

regulator

Active temperature

regulator

db 1/2

db 1/2

db 1/2

db 1/2

Set Point

TemperatureA

db 1/2

db 1/2

EWHT800LX 10 - EN

English

EWHT800LX can be connected to:

• telecontrol system TelevisSystem (°)

• third-party systems via Modbus protocol (°°)

• ParamManager fast parameter setting software

The connection can be made in 2 ways:

1) via TTL serial port. See Electrical Connections.

Use the BusAdapter150 TTL- RS 485 interface module

2) by direct RS-485 connection using the optional RS485/TTL plug-

in module (not included).

See gure opposite.
In both cases, use a RS485/RS232-USB PC interface converter and
the required software licence.
(°) To congure the instrument for this purpose, open the le identied by the label "Add" and use

parameters "dEA" and "FAA*

(°°) To congure the instrument for this purpose, open the le identied by the label “Add” and use

parameters "dEA", "FAA", "PtY"*

*FOR MORE INFORMATION READ the manual, p/n 9MA10024

SUPERVISION

+

-

+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

Pb3

Pb4

Pb2

Pb1

DI4 DI3 DI2 DI1

Power

39 40 41

45

46

47

51 52 53

Analogue

Output - AO

Pb5

TTL

64 65 66 67

68 69 70 71

54 55 56 57 59 60 61 62

RS485

connection to

TelevisSystem

available

with optional

plug-in

module

only

Copy

Card

Bus

Adapter

RS 485

TTL

ALARMS AND TROUBLESHOOTING

How to display the alarms

1) Press and release the UP key. The upper display will always show the label ALr. The lower display

will show:

• nOnE if no alarms active

• SYS to indicate system alarms - see Alarms Table

• HACP to indicate HACCP alarms - see HACCP alarms

2) Using the UP & DOWN keys, nd the type of alarm that you want to check

System alarms

The upper display will show the label ALr, the lower display will indicate the alarm code

- see Alarms Table

• Using the UP & DOWN key, scroll the other alarms

• Press the ESC key to return to the previous alarm code, press the ESC key several times (or keep it
pressed) to return to the normal display

HACCP ALARMS

The instrument logs high and low temperature alarms for the cold room probe, as well as any power

failures. The alarm types and the duration and start time of the alarm itself will be displayed in the

alarms folder ALr. It is possible to disable the recording of alarms and/or resetting of HACCP alarms.

See Functions Menu.

FOR MORE INFORMATION READ the manual, p/n 9MA10024

11 - EN EWHT800LX

English

ALARMS TABLE

This section lists alarms associated with the default conguration of the instrument. For a description of alarms relating to custom congura­tions, refer to the user manual or contact Eliwell Technical Support

Folder Cause Eects Remedy

E1*

Pb1 room probe faulty

• measured values are outside operating

range

• probe faulty/short-circuited/open

• Label E1 displayed

• Min/max alarm regulator disabled

• Compressor operation based on parame­ters "Ont" and "OFt" if set for duty cycle.

• Check probe type NTC/PTC (see H00)

• Check the probe wiring

• Replace probe

E2*

Pb2 defrost probe faulty

• measured values are outside operating

range

• probe faulty/short-circuited/open

• Label E2 displayed

• The Defrost cycle will end due to time-out

(Parameter "dEt")

• Check probe type NTC/PTC (see H00)

• Check the probe wiring

• Replace probe

E3* Pb3 destratication fan probe faulty

• Label E3 displayed

• Fans remain ON for time SOn

• Fans remain OFF for time SOF

Set parameters SOn and SOF to switch
the fans ON/OFF in duty cycle mode

E4*

Pb4 NTC condenser fan probe faulty

• Measured values are outside operating

range

• Probe faulty/short-circuited/open

• Label E4 displayed

• Condenser fans ON depending on F16 and

F20 parameters

• Check probe type NTC/PTC (see H00)

• Check the probe wiring

• Replace probe

E5*

Pb5 Humidity probe / pressure transducer

faulty

• E5 label shown on lower display

• The upper display will show the value read

by the room probe except in the case of
probe errors

• Check probe type (H45)

• Check wiring (2, 3, 4, 5-wire probe)

• Replace probe

AL1

Pb1 LOW temperature alarm

• value read by Pb1 < LAL after time of
" tA O".

• Recording of label AL1 in folder ALr

• No eect on regulation

• Wait for the temperature value
read by Pb1 to come back above
LAL+AFd

AH1

Pb1 HIGH temperature alarm

• value read by probe Pb1 > HAL after
time of "tAO".

• Recording of label AH1 in folder ALr

• No eect on regulation

• Wait until temperature value read by
Pb1 returns below HAL-AFd

AL3

Pb3 LOW temperature alarm

• value read by Pb3 < LAL with
PbA=1,2*

• value read by Pb3 < SA3 with PbA=3
and dA3<0**
*after delay equal to tA0
** after delay equal to tA3

• Recording of label AH3 in folder ALr

• No eect on current regulation

• Wait for the temperature value read

by Pb3 to come back below:
LAL+AFd with PbA = 1,2
SA3+|dA3| with PbA=3

AH3

Pb3 HIGH temperature alarm

• value read by Pb3 > HAL with
PbA=1,2*

• value read by PB3 > SA3 with PbA=3
and dA3>0**

*after delay equal to tA0
** after delay equal to tA3

• Recording of label AH3 in folder ALr

• No eect on current regulation

• Wait for the temperature value read

by Pb3 to come back below:
HAL-AFd with PbA = 1,2
SA3-dA3 with PbA=3

LrH

Pb5 LOW humidity alarm

• value read by Pb5 < LHA
*after delay equal to AOH

• Recording of label LrH in folder ALr

• No eect on regulation in progress

• Wait until humidity value read by

Pb5 returns below LHA+AdH

HrH

Pb5 HIGH humidity alarm

• value read by Pb5 > HHA
*after delay equal to AOH

• Recording of label HrH in folder ALr

• No eect on regulation in progress

• Wait until humidity value read by

Pb5 returns below HHA-LdH

EWHT800LX 12 - EN

English

TECHNICAL SUPPORT

Please have the following information available when contacting Eliwell Technical Support:

• IdF rmware version (e.g. 389)

• rEL rmware version release (e.g. 1,2,...)

• tAb map code

• Ht instrument model (e.g. 800)

To obtain this information:

• Press and release the DOWN / INFO key

• Press and release the DOWN key once more to display other information about the instrument

• Press the ESC key to return to the normal display

This section lists alarms associated with the default conguration of the instrument. For a description of alarms relating to custom congura­tions, refer to the user manual or contact Eliwell Technical Support

Folder Cause Eects Remedy

Ad2

• End of defrost cycle due to time-out

rather than due to defrost end tempe-

rature being read by the defrost probe

• Recording of label Ad2 in folder ALr • Wait for the next defrost cycle for

automatic return

EA

• activation of digital input (set as exter­nal alarm). See param. H11...H14

• Registration EA label in the ALr folder

• Controller shutdown (see section

rLO/dOA/PEA)

• in case of alarm silenced, the

controllers remain shutdown until

the next deactivation of the digital
input.

• wait for next deactivation of

digital input.

OPd

• Activation of digital input (congured as
door switch) See param. H11...H14

• Depends on delay set by parameter tdO

• Recording of label OPd in folder ALr

• Regulator blocked (see para. dOA/PEA)

• Close door

• Depends on delay set by parameter

OAO

L01…L15*

H01…H15*

*PEn para­meter value
(default 15,

max 99)

LOW and HIGH pressure warning (min/

max pressure switch)

• minute count start dened by parameter

PEi

• no eect on current regulation

• Wait for the time interval dened by

PEi (automatic reset) to elapse

• If PEn appear during the PEi interval

see LPA/HPA

LPA

LOW pressure alarm
(minimum pressure switch)

• Recording of label LPA in folder ALr

• Current regulation blocked (compressor,

defrost and fans)

• The standby relay will be deactivated

• Switch the device o and back on

again (manual reset)

• The pressure switch alarms can be

reset manually from the functions

menu (label rPA)

HPA

HIGH pressure alarm
(high pressure switch)

• Recording of label HPA in folder ALr

• Current regulation blocked (compressor,

defrost and fans)

• The standby relay will be deactivated

• Switch the device o and back on

again (manual reset)

• The pressure switch alarms can be

reset manually from the functions

menu (label rPA)

E10

Clock alarm
clock faulty or battery low

• Functions associated with clock not

present

• contact Eliwell Technical Customer

Support

ALL ALARMS:

• Alarm icon permanently on (including pressure switch warnings)

• Press any key to silence the alarm, the LED changes from a steady light to a blinking light. Please note: the buzzer will be deactivated while

the alarm relay remains active

* E1-E2-E3-E4:

If simultaneous they will be shown alternately on the display at a frequency of 2 seconds.

E5 shown permanently on lower display

13 - EN EWHT800LX

English

TECHNICAL DATA

DESCRIPTION

Front panel

IP54

Container

Bayblend FR 110

Dimensions front 210x245mm, depth 90mm

Mounting

wall mounting (centre distance of holes A-B 181.0 mm; holes C-D 196.5 mm. See Mechanical Installation paragraph)

Connections • removable screw terminals for serial port RS-485, digital and analogue inputs

• removable screw or FASTON terminals for power supply and digital relay outputs (see Wiring Diagrams)
internal housing for door lock disconnecting switch, remote control switch, etc.

WARNING: do not exceed the amperage limits specied on the door lock disconnector markings

Operating temperature -5°C...+50°C

Storage temperature

-20°C...+85°C

Operating and storage humidity

10..90% RH non-condensing

Display range • –50…110 °C (NTC) / -55...150°C (PTC) without decimal point, on display with 3 digits + sign

• 0...2000 (4...20mA)

Analogue Inputs • 4 NTC inputs . PTC selectable by parameter H00

• 1 current input 4...20mA

Digital inputs

4 voltage-free digital inputs congurable by parameters H11...H14

Relay outputs

• OUT1 output SPST 1/2HP 8(4)A 250Va

• OUT2 output SPST 1/2HP 8(4)A 250Va

• OUT3 output SPST 1/2HP 8(4)A 250Va

• OUT4 output SPST 2HP 12(12)A 250Va

• OUT5 output SPST 1HP 8(8)A 250Va

• OUT6 output SPDT 1/2HP 8(4)A 250Va

• OUT7 output SPDT 1HP 8(8)A 250Va

• OUT8 output SPST 1HP 8(8)A 250Va

Analogue Output 1 congurable analogue output

Analogue Output Table

Type Start of

scale range

Full scale

range

Resolution Accuracy Permissible

load

PWM - - 1% e.o.s.

±1% e.o.s.

0...20mA020

0.1% e.o.s.

500 Ohm

4...20mA 4 20 500 Ohm

0-10V 0 10 55mA minimum load

resistance 180 Ohm

Digital output

-

-

Buzzer only on models where this is provided
Serials • 1 TTL port for connection to Copy Card

• 1 TTL port for connection to TelevisSystem

• 1 RS-485 serial port for connection to Televis

System

(use with optional plug-in module)

Accuracy

better than 0.5% of end of scale +1 digit

Resolution

NTC, PTC: 0,1 °C full range • 4...20mA : 1 digit (ndt = 0) / 0.1 digit (ndt=1)

Power draw 15W
Power supply

100-240Va ± 10% 50/60Hz

Important! Make sure the machine is switched off before working on the electrical connections.

The instrument is equipped with:

• Removable screw terminals: for connecting electric cables of 2.5 mm2 maximum cross-sec-
tion (one wire per terminal in the case of power connections): for the capacity of the terminals, see the label
on the instrument. The relay outputs are voltage free: they are indicated on the board with the letters COM for
Common, NO for Normally Open and NC for Normally Closed contact. When current exceeds 8A on relay out­puts, 2 x 2.5mm2 cables (2 fastons) must be run out for each individual contact to ensure the temperature of the
cables does not exceed 85°C.

• Fastons: single row of fastons in series. Do not exceed the maximum permitted current; for
higher loads, use a contactor with sufcient power capacity. Make sure that power supply is of the correct voltage

for the instrument.

Probes have no connection polarity and can be extended using a normal bipolar cable (note that the extension
of the probes inuences the instrument's electromagnetic compatibility (EMC): take great care with the wiring).
Probe cables, power supply cables and the TTL serial cables should be routed separately from power cables.

WARNINGS

EWHT800LX 14 - EN

English

Eliwell has held ISO 14000 certication for a number of years, thereby guaranteeing the

effective application of its Environmental Management Policy.

Eliwell is a member of the Italian Electrical Engineering Association (Comitato Elettro­tecnico Italiano) and makes an active contribution to regulatory development.
This ensures that Eliwell technical developers benet from excellent training in the
elds of:

• electrical safety

• electromagnetic compatibility

• respect for the environment

Eliwell wishes to share its commitment to environmental sustainability with its custom-

ers, by reducing its paper trail and providing online access to documentation.
For further information, refer to the complete user manual which can be downloaded

free of charge from the www.eliwell.it website.

CONDITIONS OF USE - Permitted use

For safety reasons, the device must be installed and used according to the instructions provided.
In particular, parts carrying dangerous voltages must not be accessible in normal conditions.
The device must be adequately protected from water and dust with regard to the application, and
must only be accessible using tools (with the exception of the front panel).

The device is suitable for use as a stand-alone unit and has been tested for safety aspects in accor­dance with harmonised European reference standards. It is rated:

• in terms of design, as an automatic electronic temperature controller for built-in or stand-alone installation

• in terms of automatic operating characteristics, as a type 1B controller

• in terms of software class and structure, as a class A device

• In terms of connection, as a device with exible, external and removable cable with Y connection.

• device with pollution grade 2

• as a device with class D re resistance

• overvoltage category grade II

• device made with class IIIa material

• ball test temperature: 80°C

Improper use

Any use other than that expressly permitted is prohibited.

Note that the relay contacts provided are of a functional type and subject to failure: any protection
devices required by product standards, or suggested by common sense for obvious safety require­ments, must be installed externally to the

instrument.

LIABILITY AND RESIDUAL RISKS

Eliwell Controls srl declines any liability for damage due to:

• installation/uses other than those expressly specied and, in particular, failure to comply with the
safety requirements of established standards and/or instructions specied in this document

• use on panels that do not provide adequate protection against electric shocks, water or dust when

assembled

• use on panels allowing access to dangerous parts without having to use tools

• tampering with and/or modication of the product

• installation/use on panels which are not compliant with current standards and regulations

DISCLAIMER

This document is the exclusive property of Eliwell and cannot be reproduced or circulated unless

expressly authorised by Eliwell. Every care has been taken in preparing this document; nevertheless

Eliwell declines any liability due to its use. The same applies to any person or company involved in
the creation and preparation of this document. Eliwell reserves the right to make aesthetic or func­tional changes at any time without notice.

ISO14001

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]

Technical helpline:

[phone]

E-mail [e-mail]
www.eliwell.it

9IS64124-1 - EN - rel. 06/09 © Eliwell Controls s.r.l. 2009 All rights reserved.