Section 5: Testing And Maintenance; Periodic Tests; Maintenance; Troubleshooting - Siemens Solkor 7PG2113 Technical Manual

Section 5: Testing and Maintenance

The numeric modules relays are maintenance free, with no user serviceable parts.

5.1 Periodic Tests

During the life of the relay, the numeric module should be checked for operation during the normal maintenance
period for the site on which the product is installed. It is recommended the following tests are carried out:-
Visual inspection of the metering display
1. Operation of output contacts
2. Secondary injection of each element
The electromechanical Current Differential module should be checked periodically for correct operation, sensitivity
and connection of pilots. Siemens recommend a 5 year maintenance interval.

5.2 Maintenance

Numeric module failure will be indicated by the 'Protection Healthy' LED being off or flashing. A message may
also be displayed on the LCD. In the event of failure Siemens Protection Devices Ltd. (or one of its agents) should
be contacted
The relay should be returned as a complete unit. No attempt should be made to disassemble the unit to isolate
and return only the damaged sub-assembly. It may however be convenient to fit the withdrawable module to the
outer case from a spare relay, to avoid the disturbance of relay panel wiring, for return to Siemens Protection
Devices Ltd. The withdrawn relay should never be transported without the protection of the outer case.

5.3 Troubleshooting

Observation
Relay does not power up.
Relay won't accept the password.
Protection Healthy LED flashes
LCD screen flashes continuously.
Backlight is on but no text can be seen.
Scrolling text messages are unreadable.
Relay displays one instrument after
another with no user intervention.
Cannot communicate with the relay.
©2012 Siemens Protection Devices Limited
7PG2113/4/5/6 Commissioning & Maintenance
Action
Check that the correct auxiliary DC voltage is applied and that the
polarity is correct.
The Password being entered is wrong. Enter correct password.
If correct password has been forgotten, note down the Numeric
Code which is displayed at the Change Password screen e.g.
Change password
= 1234567
To retrieve the password, communicate this code to a Siemens
Protection Devices Ltd. representative.
General failure. Contact a Siemens Protection Devices Ltd.
representative.
The LCD has many possible error messages which when
displayed will flash continuously. These indicate various processor
card faults.
General failure. Contact a Siemens Protection Devices Ltd.
representative.
Adjust the contrast.
Adjust the contrast.
This is normal operation, default instruments are enabled.
Remove all instruments from the default list and only add those
that are required.
(See Section 2: Settings and Instruments).
Check that all of the communications settings match those used
by Reydisp Evolution.
Check that all cables, modems and fibre-optic cables work
correctly.
Ensure that IEC 60870-5-103 is specified for the connected port
(COM1 or COM2).
Chapter 6 Page 71 of 77