Pinnacle-systems NSD Bedienungsanleitung PDF herunterladen (Seite 19)

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Appendix “A”

Troubleshooting

PROBLEM: Zone 1 relay off, should be on

Cause(s): Relay found in the wrong state; circuitry

failure or relay failure.

Cure: Call for assistance.

PROBLEM: External relay contact welded/cut

Cause: External relay check input remained

open (0 volts) while the zone was de-

energized.

Cure: When the zone is de-energized (RED),

your external relay must close within

1/4 second.

PROBLEM: External relay contact short

Cause: External relay check input remained

closed (voltage applied) while the zone

was energized.

Cure: When the zone is energized, the

secondary pole of your external relay

(N.C.) must open up within 1/4 second.

PROBLEM: Mat # out of sequence

Cause: The master and slave processors

disagree on which sequence they are

on.

Cure: Could have an electrical noise problem

causing one of the processors to loose

sequence.

PROBLEM: Ram failure

Cause: Microprocessor failed the internal

memory test.

Cure: Call for assistance.

PROBLEM: Power failure

Cause: Circuitry failure; brown out.

Cure: Call for assistance.

PROBLEM: Watchdog failure

Cause: Watchdog circuitry failure.

Cure: Call for assistance.

PROBLEM: Serial data corrupted

Cause: Electrical noise getting into the control

box causing one of the computer to

reset.

Cure: Place MOV’s across the coil of any

device (outside this control) switched

on/off by the relay outputs of this

controller.

PROBLEM: Serial data transmission incomplete

Cause: Electrical noise getting into the control

box causing one of the computer to

reset.

Cure: Place MOV’s across the coil of any

device (outside this control) switched

on/off by the relay outputs of this

controller.

PROBLEM: Master relay on, Slave relay off

Cause(s): The master processor disagrees with

the slave.

Cure: Call for assistance.

PROBLEM: Slave relay on, Master relay off

Cause: The slave processor disagrees with the

master.

Cure: Call for assistance.

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