Siemens ST950 - Regulatory Signs Expansion Kit Monitoring; High-Current Capability Controllers

Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Security classification
Unrestricted
Page
34 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
4.2.2 Regulatory Signs Expansion Kit Monitoring
The regulatory signs extension kit provides for a further twelve ELV regulatory
signs. These are arranged in two separately monitored blocks of 6. The kit contains
lamp monitoring circuitry which must be linked to the external input(s) of an
appropriate LSLS card. Two twisted pair cables, identical to that used for the HPU
regulatory sign monitoring are supplied. The blue strand of the cable should be
connected closest to the PCB (Return) of the external input.
Recommended Monitoring Channels
LSLS Card 1 Channel 1
HPU Reg Sign Monitoring
LSLS Card 1 Channel 2
Reg Sign Kit (1) signs 1..6
LSLS Card 1 Channel 3
Reg Sign Kit (1) signs 7..12
LSLS Card 2 Channel 1
Reg Sign Kit (2) signs 1..6
LSLS Card 2 Channel 2
Reg Sign Kit (2) signs 7..12
A single LSLS can monitor a maximum of 18 extension kit regulatory signs plus the
eight standard HPU powered signs.
4.3 High-Current Capability Controllers
For Controllers where the total lamp load will not exceed 20A, a single Lamp Supply
Transformer and associated 20A HPU are fitted.
For lamp loads up to 40A, an additional Lamp Supply Transformer and additional
20A HPU may be fitted. The additional Transformer and HPU can either be fitted
alongside the first transformer and HPU on the side panel of the primary cabinet, or
can be fitted in an expansion cabinet.
When fitting a second HPU, a relay control cable must be connected from
PL1 of the first HPU to PL2 of the second HPU.