Specifications

Mobility and Logistics, Traffic Solutions
Sopers Lane, Poole, Dorset, BH17 7ER
Security classification Unrestricted Page 70 of 83
Version 2 Status Released
Last Editor Harry Smyth Date 09/12/2014
Document Name Configuration Control Document No. 667/CC/45950/000
Copyright © Mobility 2014. All Rights Reserved. Mobility is a division of Siemens Plc
4.12 Detector Power and Ancillary Power
4.12.1 HPU Power for Detectors
The -24v DC detector power supply should be obtained from the 12 way terminal block on
the side panel next to the HPU. This terminal block is marked as DET COM (+) (Orange
wire) and DET SUP (-) (Grey wire) and the power is supplied to these terminals from the 2.8
amps DC RMS supply from 1
st
HPU Socket SK2 terminals DET COM (+) and DET SUP (-)
and if fitted a further 2.8 amps DC RMS from 2
nd
HPU (667/1/33040/001). Connect the
Orange wire to terminals DET COM (+) and the Grey wire to DET SUP (-). Then connect the
Orange wire to SK7 IN + and the Grey wire to SK7 IN – on the Intelligent detector
Figure 62 – HPU Detector Power
Figure 63 – Detector Power
Detector
Power IN
Detector
Power OUT
to next
Intelligent
Detector
Backplane
Connection
from Loop
Termination
PCB PL8
Fast Serial
Link from
I/O card
Fast Serial
Link to next
Intelligent
Detector
Backplane
Serial I/O
Address
Switch
Backplane
isolation fuse