CONCEPT 32 - PETS ‘Wedge’ Operator Alarm Display Unit

The PETS system allows road users to warn the Railway signaller in case of hazards on the crossing. An automatic monitoring facility checks the operational status of the crossing barrier equipment, telephone handsets and the transmission path.

The STS Signals PETS Interface allows up to four telephones at a railway level crossing to be linked directly to a CONCEPT 32 or CONCEPT 16 telephone concentrator system, via an existing PETS trackside unit manufactured by Whiteley Electronics Ltd.

A PETS Alarm Accept push-button is provided on the Signaller’s keypanel and is used to acknowledge alarms from the PETS trackside unit. The pushbutton is dual purpose since its integral lamp provides visual indication of the system power-on condition, and also provides a lamp test and audible alert test function if held for more than 2 seconds.

The PETS alarm display unit may be integrated within a free standing keyboard or console mounted keypanel. A stand-alone unit (PETS ‘Wedge’ illustrated below) is also available for retrofit applications ensuring minimum disruption to the Concentrator system.