PETS-2 Crossing Telephone System
QUICKFIX INSTALLATION HANDBOOK
Page 7
of 40
Issue 2
13/12/99
7
1. INTRODUCTION
This handbook is provided to enable the basic installation of PETS 2 Signal Box and PETS
2 Crossing equipment. Basic installation covers the standard installation format - a single
Signalbox unit connected to a single Level Crossing unit. A competent design authority
must undertake a survey of the site prior to installation, and shall then provide any
additional installation instructions relating to the specific configuration, wiring arrangement
and location of equipment. A separate PETS 2 ‘Handbook for Design, Installation and
Maintenance’ (WEL part G42279) is available for use by competent designers and
maintainers.
This equipment conforms to an updated design, and most installers may be familiar with the
original PETS equipment. The most significant differences between PETS (original) and
PETS 2 are listed, as follows:
•
External appearance - new colour and styling of front panels
•
Front panels use labels, and buttons on the Signal Box unit use the label as a
‘membrane’ cover.
•
External connections are now made through QDF IDC connectors within an external
junction box. Connections from the PETS 2 equipment are made through ‘D’ connectors
to 2 metre connecting leads, terminated on the QDF blocks.
•
Power supply design accepts higher voltage transient levels and the unit includes EMC
filtering.
•
Card extractors included and stowed within.
•
Card frame removal from case improved.
•
Case to wall fixing improved by rear ‘bumps’.
•
Integration of power supply/ battery charger alarms
•
Minor software changes.
•
Equipment Alarm 7 segment display and ‘Interrogate’ button of the Signal Box unit may
be replaced by a remote display unit.
2. EQUIPMENT SUPPLIED
The Signal Box unit may be recognised by the four ‘CALL’ buttons on its front panel, red in
colour. The Level crossing unit may be distinguished by the large number of LED apertures
on its front panel. There are two line cards supplied with the Level Crossing unit, whereas
Signal Box units are supplied with one line card only.
The Junction box supplied with the Signal Box unit includes a pre-wired alarm sounder.
2.1
Signal Box Kit (WEL part A35154)
Upon opening the packaging, the contents should be checked to the following list: