ABB NGC8206 - Page 10

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6.4 Alarm Troubleshooting Tests ................................................................... 6–21
6.4.1 Sample Vent Pressure Test ....................................................................... 6–21
6.4.2 Column Vent Pressure Test ....................................................................... 6–21
6.4.3 Sample Pressure Test ............................................................................... 6–21
6.4.4 Feed-through Assembly Blockage Test ..................................................... 6–22
6.4.5 Temperature Sensor Test .......................................................................... 6–22
6.4.6 Abnormal Calibration Gas Depletion.......................................................... 6–22
6.5 Power Troubleshooting ............................................................................ 6–22
6.5.1 Overview .................................................................................................... 6–22
6.5.2 Power Supply Voltage Test ........................................................................ 6–24
6.5.3 Equipment Isolation Test ........................................................................... 6–24
6.5.4 NGC Module Isolation Test ........................................................................ 6–25
6.5.5 Charger Circuit Test ................................................................................... 6–26
6.5.6 Solar Panel Troubleshooting Test.............................................................. 6–27
6.5.7 AC Charger/Power Supply Troubleshooting Test ...................................... 6–28
6.6 Troubleshooting Communications ............................................................ 6–28
6.6.1 Communication .......................................................................................... 6–29
6.6.2 Setting Up Communication ........................................................................ 6–29
6.6.3 Transceiver Supply Voltage Test ............................................................... 6–31
6.6.4 12 VDC Communication Supply Voltage Test ........................................... 6–31
6.6.5 Transceiver Check ..................................................................................... 6–32
6.6.6 RS-232 Communication Test ..................................................................... 6–32
6.6.7 RS-485 Communications ........................................................................... 6–33
6.6.8 RS-485 Communication Test ..................................................................... 6–34
APPENDIX A MODBUS REGISTERS ........................................................ 6–1
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