Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Figure 24 – SK6 and SK7 Connections for Loop Detector Power
4.12 Loop Detector Cards
The Loop Detector cards pick up the Loop Detector Power from SK7 on the
Intelligent Detector Backplane Card. that they are plugged into.
Further information regarding Loop Detector Cards is available in the following
documents:
667/HB/45200/000 - SLD4 Loop Detector Handbook or
667/HB/27663/000 - ST4S Loop Detector Handbook
4.13 LSLS Card and Backplane
The LSLS card provides 32 uncommitted current and voltage monitored switched
outputs to the ELV signal aspects. Each LSLS card is fitted into an LSLS backplane
on the side panels of the cabinet. A maximum of 3 LSLS cards can be fitted into an
ST950 ELV controller cabinet. A further 3 additional LSLS cards can be fitted in an
adjacent expansion cabinet.
The LSLS backplane terminates the street cabling, allowing connection of up to 4
wires for each of the 32 aspect drive outputs and gives a total of 64 return
terminations.
In addition, the LSLS backplane provides a connection for:
• The power supplied via the HPU
• Daisy-chained connections for the high-speed serial communications from the
CPU Card or previous LSLS card
• Inputs for monitoring regulatory sign current
• A means of setting the address of the LSLS card.
IC4 can be used to print self-adhesive labels for the LSLS backplane to identify the
phase and colour of each street termination.
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