Siemens ST950 - LSLS Card Faults

Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Security classification
Unrestricted
Page
146 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
Only 1 LSLS but
HPU link set for
‘Fail to
Flashing’!
Only one LSLS card fitted.
Only LSLS #1
Should
Be connected to
The fail flash lamp
Supply!
The LSLS card set-up for HFF is not the first card.
HPU link set
For ST900 HFF
Not ST950 HFF
Or Relay A Fault
Only one LSLS; with Relay A it appears to be connected to HFF, with Relay B it
appears to switched off, i.e. ST900 HPU or Relay A stuck.
ST900 HPU fitted
Or HPU link set
For ST900 HFF
Not ST950 HFF.
Relay A indicated HFF but Relay B does not; this is probably ST900-style HFF
connections.
Unexpected result
From HPU Relay
Checks.
Implies a relay fault.
11.6 LSLS Card Faults
Resolving problems with LSLS Cards and LSLS Outputs:
When various tests fail, the handset may display information such as shown below:
If only one LSLS Card is fitted:
1/05:Extra Sigs On
 identifies the test which has failed
32:1000000000000000
 LSLS outputs 32 through to 17
16:0000000000010000
 LSLS outputs 16 through to 1
........87654321
 (Helpful information)
The display shows the status of all 32 LSLS Outputs on that card. The display is in
‘binary’, with each digit / bit showing ‘1’ to identify that output as faulty. The status of
the 32 LSLS Outputs (1-32) is shown on the second and third lines.
The first line identifies the test that has failed (see section Error! Reference source n
ot found.). The second line shows the status of LSLS Outputs 17 to 32, starting