78 of 132
M-SV-001-EN Rev.E
Compressor Components
1. Ensure the compressor interface cable is
properly attached to the Backplane and to the
CIM and the BMCC is properly attached to the
Backplane.
2. Remove the J2 connector from the I/O board.
3. Using a multimeter set for DC voltage, measure
the voltage between I/LOCK+ and I/LOCK-.
The voltage should be 2.2 - 3.7VDC.
4. Install the J2 connector to the CIM.
5. Ensure the circuit connected to I/LOCK+ and I/
LOCK- on the CIM (port J2) is closed.
6. Measure the voltage at I/LOCK- to the common
ground point.
The measured value at I/LOCK- should be 0VDC.
• If the measured value is not 0VDC, locate and
remove the source of the voltage.
7. Open the SMT
Compressor Monitor
tool.
8. With the system interlock circuit remaining
closed, verify the
Compressor Interlock Status
states “Closed.”
• If the
Compressor Interlock Status
states “Open,”
the interlock circuit is damaged and the BMCC
needs to be replaced.
9. Isolate compressor power.
10. Remove the J2 connector from the CIM.
11. Using a multimeter for resistance
measurement. Place the meter probes on I/
LOCK+ and I/LOCK-.
• Resistance should be < 22.2kΩ; if not, the
interlock circuit is damaged and the BMCC needs
to be replaced.
1. Isolate compressor power and wait for the D9
LED to turn off on the CIM.
2. Remove all external connections from the CIM.
3. Using a screwdriver, apply leverage toward
the left while lifting the right side of the CIM. See
Figure 73 (Removing the Compressor Interface
Module From the DIN Rail.
4. Repeat the procedure for the other mounting
foot to disengage the CIM from the DIN rail.
3.15.3.3 Interlock
Verification
3.15.4 Removal &
Installation
3.15.4.1 Compressor
Interface Module
Removal
• • • DANGER • • •
Ensure there is no secondary power source connected to the Compressor I/O Board before disconnecting the I/O cable.
Figure 73 - Removing the
Compressor Interface
Module From the DIN Rail
Summary of Contents for Turbocor TT-300
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