Data
Ordering
Type Function Code No.
EKC 361 Evaporating pressure controller 084B7060
EKA 174
Data communication module
(accessories), (RS 485 module)
with galvanic separation
084B7124
Necessary connections
Terminals:
25-26 Supply voltage 24 V a.c.
17-18 Signal from actuator (from NTC)
23-24 Supply to actuator (to PTC)
20-21 Pt 1000 sensor at evaporator outlet
1-2 Switch function for start/stop of regulation. If a switch is
not connected, terminals 1 and 2 must be shortcircuited.
Application dependent connections
Terminal:
12-13 Alarm relay
There is connection between 12 and 13 in alarm situa tions
and when the controller is dead
8-10 Relay switch for start/stop of fan
9-10 Relay switch for start/stop of solenoid valves
18-19 Current signal from other regulation (Ext.Ref.)
21-22 Pt 1000 sensor for monitoring
2-5 Current output for Sair/Saux temperature or ICAD actuator
for ICM valve
3-4 Data communication
Mount only, if a data communication module has been
mounted.
It is important that the installation of the data communi-
cation cable be done correctly. Cf. separate literature No.
RC8AC..
Connections
Supply voltage
24 V a.c. +/-15% 50/60 Hz, 80 VA
(the supply voltage is galvanically separated
from the input and output signals)
Power consumption
Controller
Actuator
5 VA
75 VA
Input signal
Current signal 4-20 mA or 0-20 mA
Digital input from external contact function
Sensor input 2 pcs. Pt 1000 ohm
Output signal Current signal
4-20 mA or 0-20 mA
Max. load: 200 ohm
Relay output 2 pcs. SPST
AC-1: 4 A (ohmic)
AC-15: 3 A (inductive)
Alarm relay 1 pcs. SPST
Actuator
Input
Temperature signal from
sensor in the actuator
Output
Pulsating 24 V a.c. to
actuator
Data communication
Possible to connect a data communication
module
Ambient
temperature
During operation
During transport
-10 - 55°C
-40 - 70°C
Enclosure IP 20
Weight 300 g
Mounting DIN rail
Display LED, 3 digits
Terminals max. 2.5 mm
2
multicore
Approvals
EU Low Voltage Directive and EMC demands re
CE-marking complied with.
LVD-tested acc. to EN 60730-1 and EN 60730-
2-9
EMC-tested acc. to EN50081-1 and EN 50082-2
Temperature sensor Pt 1000 ohm: ..........Kindly refer to catalogue RK0YG...
Valves: .............................................................DKRCI.PD.HT0.A
Data communication
Wire length: See appendix 2
CVQ/
CVMQ/
KVQ
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