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M-SV-001-EN Rev. G
D9 – Power LED
• Green: ON: compressor is on (i.e., Compressor I/O Board and BMCC are properly connected to
the Backplane)
4.4.2 Compressor Interface Module Verification
4.4.2.1 Determining if the Compressor Interface Module is Draining Energy
1. Identify if the D9, green light-emitting diode (LED) is on.
2. Remove the Service Side Cover.
3. Measure the Bac5V and +15V test point voltages.
4. Remove all external connections to the I/O board.
5. Measure the Bac5V and +15V test point voltages.
6. Isolate compressor power and wait for the Backplane LEDs to turn off.
7. Disconnect the compressor I/O cable from the J6 connector on the CIM.
8. Apply power to the compressor.
9. Measure the Bac5V and +15V test point voltages.
10. If voltages do not change, I/O board is not draining energy.
4.4.2.2 Compressor Interface Module Communication Verification
1. Connect the CIM to a computer.
2. Confirm serial port to be used by the computer.
3. Open the Service Monitor Tool (SMT) software and select the
Compressor Connection
Manager
tool. See the Service Monitoring Tools User Manual for use instructions.
4. Click
Connect.
• If the Compressor Connection Manager is able to connect to the compressor, the BMCC is
able to communicate with the user interface.
• If the system is not able to connect, verify:
– The D9, green LED is on.
– The cable connection between the Backplane (port J7) and the CIM (port J6) is properly
attached.
– The cable connection between the CIM (at port J1 if using RS485 communication or at
port J7 if using RS232 communication) and the user’s computer is properly attached.
– The BMCC is properly connected to the Backplane.
5. If all connections are properly attached and you still cannot connect to the compressor
with the SMT, confirm computer serial port, then use the
Search
function in the
Compressor
Connection Manager
to determine the correct baud rate and slave address of the compressor.
Refer to the Service Monitoring Tools User Manual for use instructions.
6. If you can still not connect to the compressor, verify the Backplane and the BMCC.
4.4.2.3 Interlock Verification
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.
Summary of Contents for Turbocor TTS Series
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