AGS PARKSAFE GAS DETECTOR Installation, Betrieb und Wartung - Seite 7

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Installation, Operation & Maintenance

Creating a Detector Chain

Up to 16 Parksafe detectors can be connected, chained in a parallel 'daisy chain' method up to approx.

500 yards from the panel depending on chain configuration, wire type for power and condition. Any other

way may cause issues or damage to the overall system.

It is recommended that the cable of same color should be used to connect all [D+] terminals together and

similarly cable of same color to be used to connect all [D-] terminals together.

**Split chain example.

**Where connections may exceed 500 yards from one control panel – Contact your supplier!

120ohm Termination Resistance

Signal communication issues may occur where the bus length is too long, high

baud rates are used or signal reflections are occurring.

To avoid this, terminating at each end of a chain may help the quality of the data

signal by turning on the 120ohm terminal resistor switch.

Split chain

Quick Circuit Test

When the test button on the detector board is pressed and held – the detector will simulate an open

circuit to ensure all configured systems, outputs, alarms, indications and other external devices operate as

intended in response to gas. When the test button is released – the test sequence will terminate and

return to normal operation.

It is recommended testing your detectors with a certified calibrated gas!

For more information refer to section: Maintenance & Testing.

Rev: 9 10-20

**Single chain example

Single chain

Parksafe Gas Detector