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Application dependent /optional Connections
A. Connection for standalone controller.
Battery
back-up
Power supply
24 V AC / DC
–
+
+
Fuse 2 A
Temperature
emperature
sensor S2
ensor S2
Temperature
sensor S4
Pressure
transmitter P0
B. Connection for Valve Driver
using analog signal.
Battery
back-up
Power supply
24 V AC / DC
–
+
Fuse 2 A
–
+
Analog signal
PLC controller
DKRCC.PI.RR0.A3.02
ETS C valve
or similar
Modbus
EKA 164
EKA 164A
DI
DI
Alarm relay
Alarm relay
switch
ETS C valve
or similar
Modbus
EKA 164A
Alarm relay
Application dependent connections
A. Superheat control
Terminals Necessary connections
Pt 1000 sensor at eavaporator outlet
14 - 15
(S2) for measuring superheat.
Pt 1000 sensor for measuring air
15 - 16
temperature (S4).
Pressure transmitter type AKS 32R.
Note:
17 - 19
The signal cannot be shared with
other controllers.
B. Control of the valve opening degree with analog
signal
Current signal or voltage signal from
21 - 22
other regulation (Ext. Ref.)
C. Control of the valve with Modbus signal
Operation via RS 485
9 - 10
data communication
C. Connection for valve driver using
Modbus signal.
Battery
back-up
Power supply
24 V AC / DC
–
+
+
Fuse 2 A
Fuse 2 A
DI
DI
switch
© Danfoss A/S (AC-MCI / sw), 2016-12
ETS C valve
or similar
Modbus
PLC cont
PLC controller
Alarm relay
Alarm relay
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