IS220PDIOH1A

  34-45 Description Fuse [ ] blown. Possible Cause • I/O pack fuse status feedback indicates a possible blown fuse. • Consult the relay terminal board help documentation on fuse configuration.   Solution Do the following in order: • Check the indicated fuse. • Check the power input to the terminal board. • Check the terminal board configuration. • Check the I/O pack configuration. • Confirm that all connectors are aligned and fully seated. • Replace the I/O pack. • Replace the terminal board.   46 Description All Fuses Blown or No Terminal Board Excitation. Possible Cause All fuse sensing indicates an open fuse. This may be due to loss of input power to the terminal board. Without power to the fuses, the sensing may indicate a false open-fuse condition.   Solution • Confirm the correct input power to terminal board. • Check the pack connector alignment and seating. • Check the pack configuration. • Check all fuses. • Replace the I/O pack. • Replace the terminal board.   47-58 Description Relay Coil [ ] Failure. Possible Cause Indication that relay feedback does not match commanded state.   Solution • Clear the voter disagreements (for TMR). • Check the I/O pack connector alignment and seating. • Check the I/O pack configuration. • Replace the terminal board.   59-70 Description Relay Output Driver [ ] Failure. Possible Cause Relay command signal as seen 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 pack-terminal board connector alignment and seating. • Replace the I/O pack. • Replace the terminal board.   72-95 Description Contact Input [ ] not responding to self-test mode Possible Cause The input hardware internal to I/O pack has experienced a failure.   Solution • Replace the I/O pack   120 Description Excitation Voltage not valid, Contact Inputs not valid. Possible Caus   • The contact excitation may not be connected to the terminal board. • The contact wetting voltage applied to the terminal board is not within the acceptable range for the board.   Solution • Check the contact excitation voltage connections to the terminal board. • Check the power distribution and wiring to ensure that correct wetting power is applied to the terminal board.   1050-1210 Description Logic Signal [ ] Voting Mismatch. Possible Cause In a TMR application, the values for the specified signal do not agree between the R, S, and T I/O packs.   Solution • Verify that the R, S, and T I/O packs are equal with the ToolboxST configuration. • Check the I/O pack power and networking. • Check the I/O pack mounting on the terminal board. • Replace the I/O pack.