Relay Output Coil Does Not Match Commanded State; No Contact Voltage Disagreement With Command; Relay Driver Does Not Match Commanded State - GE Mark VIeS System Manual

143-154
Description Relay Output Coil [ ] does not match commanded state
Possible Cause
• The relay feedback does not match the commanded state for TRLY__B, TRLY__F, or SRLY, or SRSA specific terminal
boards.
• SRSA: The mechanical relay (1 or 7) is not picked up when the relay (2-6 or 8-12) is closed.
• SRSA: Wetting power A (relays 2-6) or B (relays 8-12) is not applied.
• SRSA: Relay is picked up but no current (minimum 100 mA) is flowing through the relay circuit.
Solution
• Clear the voter disagreements.
• Check the I/O pack connector alignment and seating.
• Check the I/O pack configuration.
• SRSA: Pick up the mechanical relay before closing the solid state relays.
• SRSA: Verify that the wetting power bank A and B have voltage applied.
• SRSA: Verify that a proper output circuit is connected to the relay.
• Replace the terminal board.
155-166
Description NO [Normally Open] contact [ ] voltage disagreement with command
Possible Cause Voltage is not detected across an open TRLY__C or TRLY__E output contact.
Solution
• Clear the voter disagreements.
• Check the application to ensure that voltage should be present when relay is open.
• Check that the voltage is within the published detection range. Refer to the terminal board help documentation.
• Check the I/O pack configuration.
• Replace the terminal board.
167-178
Description Relay Driver [ ] does not match commanded state
Possible Cause The relay command signal, displayed at the I/O pack output connector to the terminal board, does not
match the commanded state.
Solution The command signal feedback requires a properly connected terminal board.
• Check the I/O pack to terminal board connector alignment and seating.
• Replace the I/O pack.
• Replace the terminal board.
140 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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