Step 6. Troubleshooting - Simplex XPS Installation Instructions Manual

XPS and XNAC Installation Instructions

Step 6. Troubleshooting

This section describes the messages that may appear on the 4100 display when using the XPS. Trouble messages appear on the left as titles, and
possible causes are listed to the right in the text.
No Communications with Master
For communications to work, the XPS requires a 0 V connection to the PDM. Be sure to attach a fast-on connector to the PC board and also ensure
that the fuse in the black battery lead is intact.
AC Power Loss
Voltage has fallen below an acceptable level. A problem may exist in the wiring, in the power distribution module, or into dedicated AC power.
Battery Not Connected/ Battery Depleted
The battery is not connected or is depleted. The precise status of the battery is given by the SPS. These modules report Low Battery. This trouble is
merely to indicate a wiring problem to the XPS (blown fuse, not connected, etc.).
Expansion NAC Card Configuration Mismatch
Either the XNAC card is missing even though the XPS was configured to have one, or there is an un-configured XNAC card physically installed.
NAC Miswired Trouble
This trouble is active when a NAC-to-NAC short is detected. The NACs that are shorted are also indicated. Any combination of NACs 1 through 6 can be
mis-wired together. The panel displays up to 4 mis-wiring faults.
Connecting additional power to motherboards
The XPS can be used to supply motherboards with an additional 24 V. Use Figure 15 to connect 24 V from the XPS to motherboards in the system.
Figure 15: Additional 24 V power wiring
page 16 574-772 Rev. Q