![background image](http://html1.mh-extra.com/html/danfoss/turbocor-tt-series/turbocor-tt-series_service-manual_4104524062.webp)
J8 – External sensor inputs
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Spare T: External temperature sensor input
o
Refer to the Applications and Installation Manual for thermistor specifications
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Spare P: External pressure sensor input
o
Refer to the Applications and Installation Manual for pressure sensor specifications
o
Refer to the OEM Programming Manual for software implications
D1 to D8 – EXV LED indicators
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Red: 2 sets of 4 LEDs for EXV 1 & EXV 2
D9 – Power LED
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Green: ON: compressor is on (i.e., Compressor I/O Board and BMCC are properly connected to the
Backplane)
4.3.2 Compressor Interface Module Verification
4.3.2.1 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. Refer to Section 4.1.3.1 Service Side Cover Removal and Installation on
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 Interface 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.
4.3.2.2 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
.
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If the Compressor Connection Manager is able to connect to the compressor, the BMCC is able to
communicate with the user interface.
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If the system is not able to connect, verify:
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The D9, green LED is on
o
The cable connection between the Backplane (port J7) and the CIM (port J6) is properly
attached
o
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
o
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
Page 62 of 294 - M-SV-001-EN Rev. H 1/23/2023
Содержание Turbocor TT Series
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