Baumer DENEX Edge Detector II Посібник користувача - Сторінка 13

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TROUBLESHOOTING

The green LED (POWER) is OFF

•

The sensor is not connected to +24V on pin 1 and 0V on pin 6 on the Tuchel

connector.

•

If the sensor previously has been working, there could be transients damaging the

sensor. Make sure that the voltage is 24VDC and is well regulated.

The red LED (LASER-OFF) is lit constantly, and no laser is present

•

Re-power the sensor. Check that the laser is lit. Is the laser turned off after a while? If

so, the laser settings have changed and the sensor must be sent back for repair.

The orange LED (OUTPUT-signal) is lit for every copy, but no pulse, or a different number of

pulses, is received by the connected equipment

•

The interfacing is bad. Check the connection of the sensor. Is the sensor supposed to

source or sink the signal? Should the pulse be positive or negative? See chapter 3.3.

•

Is the totalizer used, a battery powered device? It can be a problem because of the

voltage drop over the output transistor in the sensor. There is approx. 0.8V voltage drop

over emitter and collector at 2 mA which could mean that the totalizer does not see any

changes in state, i.e. from "high" to "low". Check with a scope between pulse and ground.

•

The opto-coupler in the sensor can be faulty.

There is an over count (too few copies in the bundles)

•

Check the mechanical installation. The sensor must be parallel to the stream.

•

Back-edges could be counted. Check by running one paper at a time, and see if

there is an extra pulse sent at the end of the paper.

•

If the surface of the product is wavy, try tilting the sensor 5 - 10° according to figure

below.

•

If there is a stitch or something near the edge, try a longer blocking or output pulse,

see chapter 4, "DIP-SWITCH SETTINGS"

User Manual DENEX Edge Detector II

Version 2013-02, V1.6

13/20

www.baumer.com

Baumer Electric AG

Frauenfeld, Switzerland