Power Supply Troubles - Simplex 4010 Service Manual

Power Supply Troubles

Type
Power
Supply
Card
Power
Supply
Points
Expansion Power Supply
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Table 2-2. Power Supply Troubles
Trouble Message
Missing Card
Wrong Card
AC Power
Possible Causes / Troubleshooting
Indicates that the Power Supply card is not communicating with the
master.
•
Check the baud rate set on the SFIO. This trouble may indicate
that the baud rate is set to some value other than 9600, which is
required for normal operation.
Set the baud rate to 9600, as shown below.
Indicates that the Power Supply card returned a card type as something
other than a Power Supply Card type. Indicates either:
•
Another slave card (LCD Annunciator, 24 Point I/O, RS-232, DACT,
or 4120 Network) has a card address of 2.
•
The SFIO board is bad.
Indicates AC line voltage is too low for proper system operation. Use a
meter to verify that the AC circuit is supplying power to the panel. This
circuit's voltage must be 120 VAC +10% / -15%.
If the circuit supplying power to the panel has sufficient voltage, check
the adjustment of the AC Voltage Brownout Potentiometer. See
Appendix B of this document.
Indicates an Expansion Power Supply (EPS) problem. Try the
following:
•
Verify that the AC circuit to which the power supply connects is
supplying 120 VAC (+ 10% / - 15%).
- If voltage is present, suspect the EPS transformer, the EPS
bridge rectifier, the connectors, or the harness running from the
EPS to the SFIO. Refer to Appendix B for information on
troubleshooting these components of the EPS.
- If no voltage is present, check the AC circuit feeding the panel.
• Verify that the black battery wire on the EPS connects to the – Batt
terminal on the 4010. Even if you are not using battery backup for
the EPS, you must connect the black wire to the – Batt terminal.
2-4
Black indicates switch position
OFF LINE
9600
19,200
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