KT-230-1
12
6.1
Required electrical connections on the CM-RC-01
• Module power connection on terminal strip CN1
(115 .. 230 V +10%/-15%, 50/60 Hz)
– Terminal 1: L
– Terminal 2: N
• Command for compressor start (release signal from
the system controller, B1)
The release signal from the system controller is
provided in path 8 as the first link of the safety chain.
This release information must be passed on to the
compressor control module. It activates the time re-
lay control for the motor contactors K1, K2 and K3.
– Connect the safety chain (release signal) to ter-
minal strip CN2, terminal 3.
– Integrate the compressor control module as the
last link into the safety chain.
– Connect the contactors directly to terminal strip
CN2 according to the schematic wiring diagram.
• Control signal from the system controller (setpoint for
capacity control, CRII)
This connection is only required if the compressor is
equipped with capacity regulators.
– Connect the Modbus cable to terminal strip CN14.
– Or connect the analogue signal to terminal strip
CN13.
• Close the module housing:
– Check if the cable connections of the protective
earth conductors are tight.
– Re-attach the module housing cover and screw it
down.
6.2
Optional electrical connections
Monitoring of application limits
High pressure and low pressure transmitters B6 and B7
are delivered as accessories kit if the "Application limits
monitoring" option has been ordered. They must be
mounted to the system, wired with the CM-RC-01 and
activated via the BEST Software. The two transmitters
must not be interchanged. They differ by the compon-
ent number engraved in the component:
• High pressure transmitter B6: 2CP5-71-47
• Low pressure transmitter B7: 2CP5-71-49
Mounting position: Connect them to the discharge gas
line and/or the suction gas line, as close as possible to
the valves using a refrigerant hose for each valve.
Length of the refrigerant hose: at least 200 mm to avoid
dew formation on the transmitter.
Electrical connection: Connect the cables at the CM-
RC-01 directly to terminal strip CN12 according to the
schematic wiring diagram.
Additional fan
Mount the fan feet to the cylinder heads. Please refer to
the Technical Information KT-140.
Connect the cable of the additional fan to the CM-
RC-01 to terminal strip CN5 according to the schematic
wiring diagram.
CIC system
WARNING
The compressor is under pressure!
Serious injuries are possible.
Depressurize the compressor!
Wear safety goggles!
Mounting: Connect the injection nozzle to the CIC con-
nection. This position is described in the Operating In-
structions of the compressor KB-104 (dimensional
drawings: connection position 4). With 6-cylinder com-
pressors, 2 nozzles are mounted.
• Remove the plug from the compressor.
• Clean and check the threaded bore.
• Mount the gasket and the injection nozzle according
to KT-130, chapter 5.4 "Injection nozzle and injection
valve".
• Press the solenoid coil onto the armature. It locks.
• Insert the electric connector of the device and screw
it down (5 Nm).
• Connect the cables of the CM-RC-01 to terminal
strip CN6, terminals 7 and 8, according to the
schematic wiring diagram.
Third capacity regulator Y3-3
For 6-cylinder compressors, a third capacity regulator
can be activated. The CRII cylinder head required for
this is mounted in the state of delivery if the com-
pressor has been ordered accordingly. It can also be
retrofitted. Further information on the mounting of the
solenoid valve and the CRII cylinder head can be found
in the Technical Information KT-101.
Electrical connection: Connect the cables of the CM-
RC-01 to terminal strip CN6, terminals 5 and 6, accord-
ing to the schematic wiring diagram.
