ST-150-2
11
5.3
Wiring in the state of delivery
Components shown in grey in the schematic wiring dia-
gram are included in the extent of delivery of the cor-
responding compressor. In the state of delivery of the
compressor, these components are completely in-
stalled and wired. Modification to these components or
their wiring is not required.
Dashed components or current paths represent com-
pressor options. Components connected to the com-
pressor module that are shown in white are also op-
tions which are not included in the extent of delivery.
CSW105: pre-fitted components
• Slider position indicator (B5)
• Solenoid valves for capacity control and V
i
(Y1, Y2,
Y11 and Y12)
• Low pressure and high pressure transmitters (B7
and B6)
• Oil temperature sensor (R2)
• Monitoring of the minimum oil level (OLC-D1, F8)
• Oil heater (R1) at 230 V voltage supply
• Motor temperature monitoring (R3 to R8)
• Rotation direction monitoring
OS.95: pre-fitted components
• Slider position indicator (B5)
• Solenoid valves for capacity control and V
i
(Y4, Y5,
Y11 and Y12)
• Low pressure and high pressure transmitters (B7
and B6)
• Discharge gas temperature sensor (R2)
• Oil monitoring (OLC-D1, F7)
Voltage supply of the peripheral devices
The compressor module internally supplies the voltage
to the terminal strips CN7 to CN12 and to peripheral
devices (solenoid valves, oil monitoring, slider position
indicator and with CSW105, also phase monitoring and
230 V oil heater).
5.4
High pressure limiter
According to EN378 directive, each compressor must
be provided with a high pressure limiter (F5) for safety
cut-out in the safety chain. Depending on the refriger-
ant charge, it must be designed as a safety pressure
cut-out or only as pressure cut-out. The software-con-
trolled monitoring of the compressor module via the
high pressure transmitter (B6) does not sufficiently en-
sure the safety cut-out function. The high pressure lim-
iter (F5) should preferably be connected to terminal
strip CN3 instead of the bridge.
The installation of a low pressure limiter is not neces-
sary, depending on local regulations. The compressor
module is provided with an automatic low pressure cut-
out function.
6
Connecting cables
Electrically connect the compressor module in accord-
ance with the schematic wiring diagrams. Observe the
safety standards EN60204-1, IEC60364 and national
safety regulations.
WARNING
Risk of electric shock!
Before working on the module housing and
electrical lines: Switch off the main switch and
secure it against being switched on again!
Close the module housing before switching on
again!
!
!
NOTICE
The compressor module may be damaged 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!
Never apply voltage to the voltage outputs, not even for
testing.
6.1
Required electrical connections to CM-SW-01
• Power connection to terminal strip CN1
– Terminal 1: L
– Terminal 2: N
• Command for compressor start (release signal from
the superior system controller, B2)
The release signal from the superior controller is
provided in path 8 as the first link of the safety chain.
This release information must be passed on to the
compressor module. It activates the time relay con-
trol for the motor contactors K1, K2 and K3.
– Connect the safety chain (release signal) to ter-
minal strip CN2, terminal 3.
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