Troubleshooting The Power Supply - Siemens SIMATIC TI525 Hardware And Installation Manual

5.2.6

Troubleshooting the Power Supply

Complete the following steps when troubleshooting the power supply:
1. Determine that the power budget has not been exceeded and that the
module is properly installed.
2. After making sure the battery is on (so the program will not be lost),
disable all power to the system for at least 90 seconds.
3. Restore system power.
4. If the problem still exists, turn off power to the system.
To avoid the potential risk of damage to equipment
or injury to personnel, always turn off power to the
system before removing the power supply from the
base.
5. Remove the power supply from the base. This step is not required for the
PPX:505–6663 power supply.
a. Make sure the jumper in the back of the module is set to the correct
b. If the voltage has been set incorrectly, wait at least one minute
6. Make sure the wires attached to the terminal screws on the bezel are
secure and that the user-supplied power source is functional.
7. Check to see that the fuse (located on the bezel) has not opened. Replace
the fuse, if necessary, with the appropriate fuse.
a. Using a flat-blade screwdriver, twist the fuse holder once,
b. To replace the fuse holder, insert, push, and turn clockwise to
8. Replace the power supply and enable power to the system.
9. If the power supply continues to malfunction, replace it.
If replacing the fuse does not solve the problem, and the power source is
correctly connected, then the power supply module should be returned for
repair. Contact your local distributor for assistance.
Hardware and Installation User Manual
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STARTUP / TROUBLESHOOTING
WARNING
line voltage.
before touching the jumper. Then move the jumper to the
appropriate quick-connect pin.
counter-clockwise, to remove the fuse holder.
secure.
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