WP rail

 

 

 

HOME

CONCENTRATORS & CARDS

KEYBOARDS

NETWORKING PRODUCTS

SERVICES

OTHER PRODUCTS

CONTACT

 

 

 

 

 

 

 

CONCEPT 16

CONCEPT 32

SYSTEM CARDS

 

 

 

 

K-PETS Interface Line Card

 

 

 

 

The K-PETS Interface Line Card interfaces to up to four Gai-Tronics Titans KETS intelligent telephones at a level crossing.

 

Specially developed DTMF tones from the trackside Titan phones are sent to the K-PETS Line Card. By varying these tones, the phones are able to transmit status information to the Concept 32 Concentrator. The PETS Line Card receives these tones and then outputs these received status signals to the PETS Alarm Card via a RS 485 interface.

 

In the PETS Alarm Card these signals are decoded to provide the following alarms to the keypanel:

•KETS Telephone Fault.

•Single OFF HOOK Alarm.

•Multiple OFF HOOK Alarm.

•System Failed Alarm.

 

A concentrator requiring K-PETS Line Cards requires the respective location to be specifically wired for PETS. The location has a different key position from standard line cards to prevent the PETS Card being inadvertently installed in a standard line card position.

 

Each K-PETS Line Card is individually addressed by a switch providing address options 0 to 7 , allowing a single PETS Alarm Card to control up to a maximum of eight K-PETS Line Cards.

 

The Gai-Tronics phones are configured for omnibus two-wire operation and connects to the first line of the respective K-PETS Line Card. Initiating a call on the keypanel will ring all four crossing telephones, therefore keys 2, 3 and 4 of the respective line card on the keypanel are not used. Conversely a call on anyone of the four crossing telephone will flash line 1 key only of the respective K-PETS Line Card (lines 2, 3 and 4 are unused).

 

The K-PETS Line Card interfaces to the PETS Alarm Card inside the Keypanel via 15 way D type connectors, providing +12v, and RS485 data to the Alarm Card.

 

LED’s on the K-PETS Line Card provide system status and alarm conditions as follows:

•LED 1 flashes when K-PETS Line Card is operational.

•LED 2 indicates +12volts is available to power the PETS Alarm Card. This supply is generated from the PSU/Services card and protected by a fuse on the PETS Line Card.

•LEDs’s 3 to 5 indicate call status. i.e. incoming ,outgoing or answered call.

•LED 6 KPETS Tx and LED 7 KPETS Rx should be continually polling when communication with the Gai-Tronics phones is established.

•LED 8 onwards indicate Alarm conditions.