Description
NTC/PTC probe and ºC / ºF scale can be set by the parameters.
The control features defrost synchronization among several thermostats,
intelligent defrost to reduce the power consumption, control for two
compressors, night set, error indication and alarms through the display and
the buzzer, communication and real-time clock.
It also features HACCP logging to record temperature and time of alarms
caused by out of limit temperatures or power fails.
SLINK multipurpose input allows to connect a KLKEY to easily program the
parameters or a communication module.
Model references
Installation
The thermostat must be located in a place protected from vibrations,
impacts, water and corrosive gasses.
Wiring
Avoid installing the cables of the probes and the digital input in the
proximity of any power cables.
Maintenance
After the installation there are no maintenance tasks required.
Clean the surface of the controller with a soft, damp cloth.
EKT8 series controllers have been specifically designed for refrigeration
applications. Friendly use thanks to the display with symbols and 8 keys to
make it easy to program the parameters and access to functions such as
turning on/off the control, the light or forcing defrost.
Models up to 5 relays are available. First relay drives the compressor and
the other four can be configured to drive defrost, fan, light or alarm. It also
includes 3 temperature probe inputs and 2 configurable digital input.
The model reference is given by: EKT8V DW XYZ
Each suffix can take the following values:
V
Model
depending on table
D
Probe
PTC/NTC selectable by parameter
W
Terminals
T:
Screw
F
:Fast-on
X
Loads
L:
2 Wires
C:
Direct
Y
Color
R
:Red,
G
:Green,
B
:Blue
Z
Supply voltage
90255:
115-230Vac
12
:12Vac/dc
Panel cut-out:
Use the gasket or apply silicone to make it leaktight. Fix the thermostat with
the supplied screws. Put the screw covers.
Never use abrasive detergents, petrol, alcohol or solvents.
All the repairs must be carried out by authorised people.
EKT8
Digital Temperature Controller
Wiring Diagram
ETDT1515I_101203
ETDT1515I_101203
Technical Data
Storage temperature
from -20ºC to 80ºC (from
-
4ºF to 176ºF)
Operating temperature
from 0ºC to 55ºC (from 32ºF to 131ºF)
Temperature probe
PTC / NTC
Probe range
PTC from -50ºC to 150ºC (from -58 to 302ºF)
NTC from -50ºC to 110ºC (-58 to 230ºF)
Accuracy
Better than 1% of full scale
Front Operation
Set Point Setup
- Press key
Set
The Set label appears.
- Press
Set
again. Current set point value appears blinking.
- Press
or
o increase or decrease the value.
- Press
Set
to confirm the new value.
- Press
Set
and to exit
Supply voltage
90-255
Vac 50/60Hz
Supply powers
3VA
Resolution
0.1º
Display
3-digits plus sign
SLINK
For KLKEY and Communication
Outputs
OUT1
Model 1HP SPST Relay Resistive Load 16A
1HP 240Vac -- 10FLA, 60LRA 240Vac
Model 2HP SPST Relay Resistive Load 20A
2HP 240Vac -- 12FLA, 72LRA 240Vac
OUT2
SPDT Relay Resistive Load 8A 240Vac
OUT3
SPST Relay Resistive Load 8A 240Vac
OUT4
OUT5
SPDT Relay Resistive Load 16A
1HP 240Vac -- 10FLA, 60LRA 240Vac
Maximum current per position
20A
Dimensions
184
x 39 x 64 mm (7.24 x 1.53 x 2.52 in)
Front Protection
Ip65
Parameter description - Continuation
d12 = Fan & defrosting control probe
sd1 = ambient probe.
sd2 = defrosting probe
sd3 = product probe
d13 = Intelligent defrosting
off = disabled
Jup = skip defrosts
Cic = vary defrosting cycle
d14 = Units to count the defrosting cycle
rt = according to the time of working of the controller.
ct = according to the time of working of the compressor.
d15= minimum evaporator set
If evaporator temperature is above d15 the time for defrosting cycle is not
counted. Only enabled if d3 is not set to off.
d16= maximum defrost time %
Percentage of d2 set as normal defrosting time.
d17= Cycle time variation
Value of increment or decrement of d8
Hde =
Hour(Hde):Minutes(Mde) of next defrost
Mde =
Hour(Hde):Minutes(Mde) of next defrost
if
d14=ct or d13 different of oFF
Hde:Mde is the time until next defrost
JdF= Smart defrost information
d13= jup
Defrosts to skip
d13= CiC
increment of d8
PROBES
P0 = ºC or ºF, Temperature scale
P1 = Ambient probe calibration
Degrees shift of the ambient probe.
P2 =
Degrees shift of the defrosting probe.
P3 = Product
Degrees shift of the product probe.
P4 = Decimal point
P5=Probe to be viewed normally on the display.
sd1 = ambient probe.
sd2 = defrosting probe.
sd3 = product probe
P6 = Probe 2 Defrosting present.
If there is a probe 2 connected to thermostat
P7 = Probe 3 Product present.
If there is a probe 3 connected to thermostat
A0 = Fan & alarm differential.
This is the temperature difference between the on and off cycle of the
alarms and fan
A1 = Maximum alarm.
High alarm ON at Set+A1. High alarm OFF at Set+A1-A0.
A2 = Minimum alarm.
Low alarm ON at Set-A2. Low alarm OFF at Set-A2+A0.
A3 = Digital Input alarm time validation.
If E0=In or E0=Al, time since the situation occurs, until it is given.
A4 = Temperature alarm exclusion time after defrosting.
During the defrosting, and this time after it, temperature alarms will be
ignored.
A5 = Temperature alarm exclusion time after opening the door.
While the door is open (if A5>0) and time A5 after closing it, alarms will be
ignored.
A6 = Temperature alarm exclusion after connection.
Until this time has elapsed since the connection, temperature alarms will
be ignored.
A7 = Temperature alarm time validation.
Time since the alarm situation occurs, until it is given.
A8 = Probe Alarm.
sd1 = ambient probe
sd2 = defrosting probe
sd3 = product probe
(Pro)
Defrosting probe calibration
probe calibration
ALARMS(ALA)
INITIALIZATION (INI)
Hor = Hour
Min = Minutes
E0, E1 = Digital input configuration.
Off = Digital input disabled.
Al = External alarm. There is an alarm if input is short-circuited.
In = Door open if input is short-circuited.
def = Order to initiate a defrost if input is short-circuited (only E0).
ndf = No defrosting will be made if input is short-circuited.
rst= If input is short-circuited Set Point becomes Set+r4
H0 = Factory Configuration.
Record Factory Configuration.
H1 = Master/Slave
H1=Master. The thermostat issues defrosting orders to slave connected
thermostats through the digital input
H1=Slave. The thermostat performs defrosting ordered by the master
connected to its digital input.
In both cases the input must be E0=def
H2 = Keyboard protection.
Yes =Keyboard protected. To modify Set, activate/de-activate defrosting and
activate/de-activate continuous cycle we have to enter the code and then
quit. The protection is removed momentarily. It is activated again 1 minute
after the last key is pressed.
No = Keyboard not protected.
H3 = Delay time on connecting.
Until this time has elapsed since turning-on power, the compressor will not
start-up.
H4 = Address for serial communication.
H5 = Input code to parameters.
This code is set to 00 from factory.
H6 = Type of Probe
PTC or NTC
H7 = Configuration Relay 2 , H8 = Configuration Relay 3
H9 = Configuration Relay 4 and H10 = Configuration Relay 5
We can choose that it is Light (Lit), Fan (Fan), Alarm (ALA), Defrosting
(dEF) or 2nd compressor (Con (Only H9)).
H11 = HACCP
Enables temperature alarm recording.
dat = Date
Day, month, year
td = Display refresh time
If the measures temperature increases over 1 degree in this time, displayed
temperature only will be increased 1 degree
Model Table
OUT5
OUT3
N L
OUT2
In2
In1
Sd1
1 2 3
6 7 8 9 10 11 12
15
16 17 18 19 20
4 5
OUT4
13 14
21 22
OUT1
INPUTS
SUPPLY
INTERNAL
BUZZER
S. LINK
Sd2
Sd3
OUT5
OUT3
N L
OUT2
In2
In1
Sd1
1 2 3
6 7 8 9 10 11 12
15
16 17 18 19 20
4 5
OUT4
13 14
21 22
OUT1
INPUTS
SUPPLY
INTERNAL
BUZZER
S. LINK
Sd2
Sd3
C
o
m
p
re
s
s
o
r
R
e
la
y
1
6
A
=
1
H
P
2
0
A
=
2
H
P
S
e
c
o
n
d
R
e
la
y
8
A
T
h
ir
d
R
e
la
y
8
A
F
o
u
rt
h
R
e
la
y
1
6
A
F
if
th
R
e
la
y
1
6
A
H
e
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t
o
r
C
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o
li
n
g
C
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B
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C
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k
EKT823
16A
*
*
EKT823B
16A
*
*
*
EKT823BR
16A
*
*
*
*
EKT823H
20A
*
*
EKT823HB
20A
*
*
*
EKT823HBR
20A
*
*
*
*
EKT833
16A
*
*
*
EKT833B
16A
*
*
*
*
EKT833BR
16A
*
*
*
*
*
EKT833H
20A
*
*
*
EKT833HB
20A
*
*
*
*
EKT833HBR
20A
*
*
*
*
*
EKT843
16A
*
*
*
*
EKT843B
16A
*
*
*
*
*
EKT843BR
16A
*
*
*
*
*
*
EKT843H
20A
*
*
*
*
EKT843HB
20A
*
*
*
*
*
EKT843HBR
20A
*
*
*
*
*
*
EKT853
16A
*
*
*
*
*
EKT853B
16A
*
*
*
*
*
*
EKT853BR
16A
*
*
*
*
*
*
*
EKT853H
20A
*
*
*
*
*
EKT853HB
20A
*
*
*
*
*
*
EKT853HBR
20A
*
*
*
*
*
*
*
DIRECT LOADS
2 WIRE LOADS
E L E C T R O N I C A
E L E C T R O N I C A
Electrónica Keld, S.L.
Pol.Ind. Empresarium. C/Lentisco 15
50720 - La Cartuja Baja, ZARAGOZA
Spain
Phone: +34 976 429 099
Fax:+34 976 593 532
E-mail: [email protected]
Web: http://www.keld.es
Electrónica Keld, S.L.
Phone: +34 976 429 099
Pol.Ind. Empresarium. C/Lentisco 15
Fax:+34 976 593 532
50720 - La Cartuja Baja, ZARAGOZA
E-mail: [email protected]
Spain
Web: http://www.keld.es
MAX.
20A
Specification and Operating Instructions
165mm
165mm
150mm
150mm
3
1
m
m
3
1
m
m
m
3m
m
3m
