4.25 Backplane
Figure 4-237 Backplane
4.25.1 Backplane Function
The Backplane is powered by +24VDC (with respect to 0V) from the DC-DC Converter. The DC-DC Converter also
provides the Backplane with HV+ (+250VDC with respect to HV-) for the Bearing PWM Amplifier. The Backplane
connects the on-board plug-in modules with communication from the power electronics, expansion valves, IGV
stepper motor, motor-cooling solenoids, bearing sensors, and pressure/temperature sensors. It is a means to transfer
control, sensor, and error information between the BMCC and other compressor components.
The Backplane also serves as the source of power to the parts connected to it. It features on-board, low-voltage DC-
DC converters for conv5V, +15V, -15V, and +17V from its input of +24VDC. Note that the +5V, +15V, and -
15V are with respect to 0VDC, but the +17V is with respect to HV-. The Backplane is also equipped with status-
indicating LEDs. All LEDs are amber in color except for the alarm LED (D12) which is green or red, depending on
alarm status.
4.25.2 Backplane Connections and Test Points
The Backplane connections and test points are indicated in Figure 4-238 Backplane Connections on page 212 and
Figure 4-239 Backplane Test Points on page 213.
M-SV-001-EN Rev. H-1/23/2023 Page 211 of 294
Содержание Turbocor TT Series
Страница 2: ...THIS PAGE INTENTIONALLY LEFT BLANK Page 2 of 294 M SV 001 EN Rev H 1 23 2023...
Страница 14: ...Page 14 of 294 M SV 001 EN Rev H 1 23 2023 THIS PAGE INTENTIONALLY LEFT BLANK...
Страница 16: ...Page 16 of 294 M SV 001 EN Rev H 1 23 2023 THIS PAGE INTENTIONALLY LEFT BLANK...
Страница 18: ...Figure 1 2 New Type Code Page 18 of 294 M SV 001 EN Rev H 1 23 2023...
Страница 39: ...Figure 2 6 Compressor Energy and Signal Flow Connections M SV 001 EN Rev H 1 23 2023 Page 39 of 294...
Страница 46: ...Page 46 of 294 M SV 001 EN Rev H 1 23 2023 THIS PAGE INTENTIONALLY LEFT BLANK...
Страница 250: ...Page 250 of 294 M SV 001 EN Rev H 1 23 2023 THIS PAGE INTENTIONALLY LEFT BLANK...
Страница 268: ...Figure 5 3 Bearing Calibration Flow Page 268 of 294 M SV 001 EN Rev H 1 23 2023...
Страница 274: ...Page 274 of 294 M SV 001 EN Rev H 1 23 2023 THIS PAGE INTENTIONALLY LEFT BLANK...
Страница 282: ...Figure B 2 Compressor Operation Troubleshooting Flowchart Sheet 2 Page 282 of 294 M SV 001 EN Rev H 1 23 2023...
Страница 283: ...Figure B 3 Compressor Voltage Troubleshooting Flowchart Sheet 1 M SV 001 EN Rev H 1 23 2023 Page 283 of 294...
Страница 284: ...Figure B 4 Compressor Voltage Troubleshooting Flowchart Sheet 2 Page 284 of 294 M SV 001 EN Rev H 1 23 2023...
Страница 285: ...Figure B 5 Compressor Voltage Troubleshooting Flowchart Sheet 3 M SV 001 EN Rev H 1 23 2023 Page 285 of 294...
Страница 286: ...Page 286 of 294 M SV 001 EN Rev H 1 23 2023 THIS PAGE INTENTIONALLY LEFT BLANK...
Страница 290: ...Page 290 of 294 M SV 001 EN Rev H 1 23 2023 THIS PAGE INTENTIONALLY LEFT BLANK...
Страница 292: ...Page 292 of 294 M SV 001 EN Rev H 1 23 2023 THIS PAGE INTENTIONALLY LEFT BLANK...