Motor Temperature Sensor Cable Verification; Pwm; Table 25 - Ccm Test Point Values; Figure 104 - Ccm J12 Connection - Danfoss Turbocor VTT Series Service Manual

Figure 104 - CCM J12
Connection
3.7.1.9.2 Motor
Temperature Sensor
Cable Verification
Test Point 4
Test Point 1
Test Point 5
Test Point 2
Table 25 - CCM Test Point
Values

3.7.1.10 PWM

Compressor Components
J4 Connector
4. Locate the feed through for the motor temp sensor and remove the connector.
Installation:
1. Install the sensor on the feed through.
2. Attach the connector to MOT RTD (J12) on the CCM Board.
3. Install the Service Side Cover.
4. Restore power to the Compressor.
With power applied to the Compressor, using a DC voltage meter, place the negative (-) test lead in the
TP1 - GND test point and verify the voltages at the test points listed in Table 25 (CCM Test Point Values).
Test Point Number
TP2
TP5
TP4
TP1
1. The PWM Board is mounted parallel to the CCM with a heat sink connected to the Compressor
housing.
2. The PWM Board provides circuitry with the following functionalities:
• Supplies current to the axial and radial magnetic bearing actuators
• Provides bearing current sensor feedback
Test Point Voltage Value
24+
15+
5+
Ground
DC Voltage Range
21.6-26.4
13.5-16.5
4.5-5.5
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