6V on outputs while "0" set

Hello,

I have 6ES7 522-1BL01-0AB0 module (DQ 32x24VDC/0.5A HF). When I set 0 on any of output bits there is 6V on it. I expect 0V like on other output modules. I wonder if it is faulty module, or its feature? 

Salesmen promissed to check it, but it takes too long for me, so I would like to know what's wrong with it.

Regards

gshehoo

Is there any load connected?

From the manual:

Residual current at signal state "0":

Jacku,

Tak, jest podpięta diodka której nie możemy zgasić nawet używając funkcji "Force". Z tego powodu użyliśmy woltomierza i okazało się, że na wejściu zostaje 6V, niezależnie od obciążenia. Na module typu standard wszystko działało poprawnie.

Pozdrawiam

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Yes, there is a output diode which we cannot turn off even if output is forced to 0. In this case we checked by multimeter what is happening there, and it appears there always is 6V. On standard module everything works properly.

Regards

Can you try to connect resistance ca. 50 ohm in parallel? Or Zener diode in series?

The issue is due to test functions this module has. They can't be switched off. The output is forceing ca. 0.5 mA to the load at "0". If load is >=12k ohm output goes up to 6 V.