Siemens ST950 - Test Failures

Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Security classification
Unrestricted
Page
144 of 154
Version
7
Status
Issued
Last Editor
manpreet.jeerh
Date
January 2020
Document Name
ST950 ICM Handbook
Document No.
667/HE/45950/000
Copyright © Siemens plc 2020. All Rights Reserved. Mobility is a division of Siemens Plc
If hardware fail flashing is available
HPU Relays switch
off LSLS cards:
A:LSLS 1 On
B:LSLS 1 On
FailFlash Available
But Not Selected.
LSLS
Switches each LSLS output on in turn
(Amber LED moves across all LSLS
cards) to check that all outputs are
working.
LSLS Outputs:1-xx
HPU
Relay A Control by Primary CPU Test
Relay A-PRI..Ok
LSLS
LSLS output test continues
LSLS Outputs:11-xx
HPU
Relay B Control by SEC CPU Test
Relay B-SEC..Ok
LSLS
LSLS output test continues
LSLS Outputs:21-xx
LSLS Outputs:Passed
SEC
SEC CPU still running
SEC Working
1st pass of self test complete.
After a short period the second stage of
the test is repeated indefinitely to allow
the controller to be soak tested if
required.
==================
Pass 0001 Complete
==================
11.5.1 Test Failures
If test fail during the 1st part of self test the handset output will provide details of the
failure. The section below details the output and describes what possible causes
there are.
M/V Test.....Failed
Mon Val Failed
The monitor validation signal is generated by the CPU Card and travels down the
phase bus cables to each of the LSLS cards, so a failure is probably due to a faulty
LSLS Card or interconnecting cable. If two lamp supply transforms are used, check
the live-neutral connections to those are correct and consistent. If, after checking
and/or replacing these items, the problem persists, there is the possibility that the
logic supply phasing may be incorrect – contact Siemens Engineering in Poole for
further information.
V/Mons Off...Failed
100000000 4--------
200000001 5--------
3-------- 6--------