GE Mark VIeS - JPDC-DC 125 V Gnd Fdbk Mag (JD1;JZ2 Connector) out of Range; JPDC-Fuse FU71 or FU72 (J7 A Connector) Is Blown or SW7 A Switched off

173
Description JPDC-DC 125V Gnd fdbk mag (JD1/JZ2 connector) out of range.
Possible Cause
• The dc 125 ground feedback magnitude is greater than Gnd_Mag_Trig_Volt.
• Gnd_Mag_Trig_Volt is set too low.
• One side of the DC 125 V source voltage is grounded.
Solution
• Verify that Gnd_Mag_Trig_Volt is set correctly.
• Check the connections to the specified connector.
• Verify the grounding of the dc input signals. Refer to the JPDC help documentation.
• If DC 125V input is not used, this diagnostic alarm can be disabled by setting the InputDiagEnab parameter on the
associated input (DC_125VFdbkMag) to Disabled.
174
Description JPDC-Fuse FU71 or FU72 (J7A connector) is blown or SW7A switched OFF.
Possible Cause
• The specified switch is turned off and FuseDiag is enabled.
• The specified fuse is blown.
• The 125 V dc input is not connected.
Solution
• If the switch is turned off (output is not used), disable the diagnostic by setting FuseDiag to Disable.
• If the output is used, verify that the switch is turned on.
• Replace the fuse.
• Verify the 125 V dc input connections to the terminal board.
• If the 125 V dc input is not used, this diagnostic alarm can be disabled by setting the InputDiagEnab parameter on the
associated input (DC_125VFdbkMag) to Disabled.
346 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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