Controlled-products-systems-group DTEK110VAC Bedienungsanleitung PDF herunterladen (Seite 4)

Note: If DIP 7 and DIP 8 are set to ON position the presence output will be extended 9 seconds after the

vehicle left the loop.

Troubleshooting

1. Perform megger test between loop

lead and ground the reading should

be larger than 100 megaohms.

2. Check that loop is tightly

connected to proper terminals

3. Check that splices are tightly

soldered and sealed against moisture.

4. Set adjacent loops on different

frequencies.

1. Faulty loop

2. Poorly crimped terminals

3. Loose connections

4. Cross-talk between

adjacent loop detectors

Detector detects

intermittently even when

there is no car on the loop.

1. Perform megger test between loop

lead and ground the reading should

be larger than 100 megaohms.

2. Check that loop is tightly

connected to proper terminals

3. Check that splices are tightly

soldered and sealed against moisture.

1. Faulty loop

2. Poorly crimped terminals

3. Loose connections

Detector stays in detect

mode after the car left the

loop and fails to undetect.

1. Check loop resistance on pins 7

and 8 while driving over the loop it

should be less than 5 ohms and more

than 0.5 ohms. The reading should be

steady.

Loop wire was temporarily

shorted or disconnected

Green indicator flashes

with two consecutive fast

blinks

1. Check loop resistance on pins 7

and 8 it should be less than 5

ohms and more than 0.5 ohms.

Loop wire shorted or

disconnected

Green indicator flashes

1. Check voltage on pins 1 and 2.

2. Replace internal fuse

3. Check wiring to detector

No input voltageGreen indicator is not ON

CorrectionPossible CauseSymptom

DTEK.lwp Created: March 23, 1998 Revised: January 16, 2003 10:44AM Pages:5 Page:4

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