34, 37
Description JPDS-[ ] P28v-T volt fdbk (JT/PT connector) out of range
Possible Cause
• The 28 V Power supply input is out of range. It is expected to be within ±5% of 28 V.
• The 28 V T power supply has not been connected.
• There could be a power supply problem.
Solution
• The input is not used. Set PS28vEnable to Disable.
• Verify the power supply connections (JT/PT) to the terminal board.
• Verify that the power supply feedback on the JPDS/M Inputs tab in the ToolboxST application is within the expected
tolerance (±5%).
38, 41
Description JPDS-[ ] P28v-R contact input (JR connector) indicates PS problem
Possible Cause
• The power supply contact is open. The power supply is not operating normally.
• The power supply contact feedback is not connected to the terminal board JR connector.
• The power supply contact is not used.
Solution
• Verify the status of the power supply contact and that the power supply is operating correctly.
• Verify the connections between the power supply and the JR connector on the terminal board.
• The JR Input is not used. Set PS28vEnable to Disable.
• The power supply is used, but the JR contact feedback is not connected. Set PS28vEnable to NoDryCnt to disable this
alarm, but continue to monitor the 28 V power supply input.
320 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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