Siemens Ohmega 300 Series Guide

7SG163 Ohmega 300 Series Maintenance
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©2011 Siemens Protection Devices Limited
7SG163 Ohmega 300 Series
7SG163 Protection Relay
Document Release History
This document is issue 2010/02. The list of revisions up to and including this issue is:
Pre release
2010/02 Document reformat due to rebrand
3 Amended
2 Amended
1 First Issue

7SG163 Ohmega 300 Series Maintenance
Contents
1Maintenance Instructions .......................................................................................................................... 3
2Troubleshooting Guide.............................................................................................................................. 4
3Defect Report Form................................................................................................................................... 6
©2010 Siemens Protection Devices Ltd Chapter 10 Page 2 of 6

7SG163 Ohmega 300 Series Maintenance
1 Maintenance Instructions
The relay is a maintenance free device, with no user serviceable parts. During the life of the relay it 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:
1 Visual inspection of the metering display (every year)
2 Operation of output contacts (every 2 years)
3 Secondary injection of each element (every 5 years)
©2010 Siemens Protection Devices Ltd Chapter 10 Page 3 of 6

7SG163 Ohmega 300 Series Maintenance
2 Troubleshooting Guide
The following table describes the action of the relay under various conditions, and suggested remedial
actions when problems are encountered.
If problems are being experienced and the suggested action does not work, or the problem is not detailed
below, then please contact Siemens.
SYMPTOM PROBLEM ACTION
LCD Screen is faint or difficult to
read. Contrast too low Press TEST/RESET & UP Button simultaneously
LCD Screen is dark or has lines
across it.
Contrast too high Press TEST/RESET & DOWN Button
simultaneously
Protection Healthy LED not lit,
LCD blank, Backlight off & No
Flag LEDS lit.
Relay is not powered
up Check Auxiliary DC supply is available. Check connections on rear of relay.
Power supply is too
low.
Check the magnitude of the input DC
voltage. Ensure it is within the relay’s
working range of 37.5 to 137.5 V
Relay LCD displays “PSU alarm
asserted, supply out of limits”
Internal ribbon cable
connection not made. Check ribbon connection cable to module A is correctly attached.
Protection Healthy LED blinking,
Messages & cursor blocks
flashing across the LCD screen
Internal ribbon
connections not made
correctly
Check ribbon connection cables to
each module are correctly attached.
Relay displays “Number of inputs
or outputs changed… Relay must
cold start… Settings will be
defaulted…Please press enter”
Relay has performed
a cold start due to a
perceived change in
hardware.
If the hardware has not been changed
(i.e. status input/relay output card
added or removed) then there may be a
problem with the hardware.
Contact Siemens
Protection Healthy LED is
flashing.
Protection Healthy Output contact
is not energised.
Protection Healthy LED is steady,
and LCD screen displays ohmega
symbols (Ω).
Protection Healthy Output contact
is not energised.
Watchdog Operated:
Hardware or
Software Fault
Contact Siemens
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7SG163 Ohmega 300 Series Maintenance
©2010 Siemens Protection Devices Ltd Chapter 10 Page 5 of 6
SYMPTOM PROBLEM ACTION
Ensure connection between PC and relay
(either via the front RS232 port or TX2 and
RX2 on the rear of the relay) has been
correctly made.
Ensure Relay address is set correctly on
both the relay and within ReyDisp Evolution.
If the relay address is set to “0” the relay will
not communicate.
Ensure the baud rate / parity settings on the
PC are the same as those set on the relay.
Relay unable to communicate using
ReyDisp Evolution software Communication channel incorrectly
configured.
Refer to Section 6 of
this manual for more
details on the
configuration of the
Communication
Channel
If using the front port ensure that the setting
IEC870 on Port is set to COM2 & COM2
DIRECTION is set to either Auto-Detect or
the port being used.

7SG163 Ohmega 300 Series Maintenance
3 Defect Report Form
Form sheet for repairs and returned goods (fields marked with * are mandatory fields)
Sender:
* Name, first name:
Complete phone number (incl. country code):
Complete fax number (incl. country code):
Email address: * Org-ID and GBK reference:
* AWV:
* Order-/ reference-no (choosing at least 1 option):
Order-no for repair: order-/ deliverynote-no for return of commission
failure: Beginning order-no for credit note demand:
Information concerning the product and its use:
* Order Code (MLFB):
Firmware version:
V* Serialnumber:
* Customer:
Product was in use approximately since: Station/project: Hotline Input no.:
Customer original purchase order number: Delivery note number with position number: Manufacturer:
* Type of order (choosing at least 1 option):
Repair Return of commission failure Credit Note
Upgrade / Modification to … Warranty repair Quotation (not repair V4 and current
For collection products! See prices in PMD)
Type of failure:
Device or module does not start up Mechanical problem Overload
Sporadic failure Knock sensitive Transport damage
Permanent failure Temperature caused failure Failure after ca hrs in use
Repeated breakdown Failure after firmware update
Error description:
Displaymessage:
(useseparatedsheetformoreinfo)
Active LED messages:
Faulty Interface(s), which? Wrong measured value(s), which? Faulty input(s)/output(s), which?
*Detailed error description (please refer to other error reports or documentation if possible):
* Shall a firmware update be made during repair or mechanical upgrade of protective relays? (choosing at least 1 option)
Yes, to most recent version No Yes, actual parameters must be reusable
repair report:
Yes, standard report (free of charge) Yes, detailed report (charge: 400EUR)
Shipping address of the repaired/upgraded product:
Company, department
Name, first name
Street, number
Postcode, city, country
Date, Signature
E D EA MF TCC 6 release from 11/2009
Please contact the Siemens representative office in your country to obtain return instructions.
©2010 Siemens Protection Devices Ltd Chapter 10 Page 6 of 6