KT-230-1
11
5.4
Motor start function
The compressor control module controls the activation
and deactivation times of the motor contactors. In the
state of delivery, the time relay control is configured for
the installed motor.
5.5
Wiring in the state of delivery
The following components are pre-installed and wired
in the state of delivery:
• Oil heater (standard, R8)
• Oil monitoring (standard, F4)
• Discharge gas temperature sensor (standard, R7)
• additionally for equipment version A: 2 solenoid
valves for capacity control (Y3-1 and Y3-2)
• additionally for equipment version B: 1 solenoid
valve for start unloading (Y1) and 1 solenoid valve
for capacity control (Y3-2)
• and additionally during the market launch phase:
High pressure switch (standard, F5)
These components are shown in a slightly darker grey
in the schematic wiring diagram. Modification to these
components or their wiring is not required and should
not be done without consulting BITZER.
All other optional components are shown in light grey.
They are delivered as accessories kit and must be
mounted and wired.
5.6
High pressure switch
According to the EN 378, each compressor must be
provided with a high pressure switch (F5) for safety cut-
out in the safety chain. This switch can be mounted dir-
ectly to the compressor and integrated into the elec-
trical safety chain via the CM-RC-01. Mounting position
see chapter Dimensional drawings, page 6, connect the
cables directly to the terminal strip CN3 according to
the schematic wiring diagram.
If optional application limits monitoring is installed, the
installation of a low pressure switch is not necessary
because the automatic low pressure cut-out function of
the compressor control module is active.
6
Connecting cables
Electrically connect the compressor control module in
accordance with the schematic wiring diagram. Ob-
serve the safety standards EN 60204, EN 60364 and
national safety regulations.
WARNING
Risk of electric shock!
Before working on the terminal box, module
housing and electrical lines: Switch off the main
switch and secure it against being switched on
again!
Close the terminal box and the module housing
before switching on again!
!
!
NOTICE
The compressor control module may be dam-
aged or fail!
Never apply any voltage to the terminals of CN7
to CN12 – not even for test purposes!
The voltage applied to the terminals of CN13
must not exceed 10 V!
The voltage applied to terminal 3 of CN14 must
not exceed 24 V! Do no apply voltage to the
other terminals!
The CM-RC-01 is installed directly above the terminal
box for the power connection of the compressor. For
the 8-cylinder compressors, it is located in the terminal
box.
Compressor power connection
• Remove the module housing cover.
• The module housings of the 4-cylinder and 6-cylin-
der compressors are screwed to the terminal box for
the power connection of the compressor. Remove
the module housing. Make sure that the two orange
cables and the protective earth conductor are not
damaged and that the connections do not become
detached. The orange cables are the motor temper-
ature sensor cables.
• Connect the power connection cable for the com-
pressor motor according to the label on the lower
part of the module housing and the Operating In-
structions KB-104. The label for 8-cylinder com-
pressors is located on the inside of the terminal box
cover.
• Both orange cables and protective earth conductor:
Check the cables. Check the cable connections on
the terminal plate for tight seat.
• Re-attach the module housing on 4-cylinder and 6-
cylinder compressors.
