Ind I/O Digital I/O voltage

We are having a issue at one of our clients where a relay connected to the digital I/O of an Ind I/O is not firing.

On debuging we found that the voltage on the pin when on is only 13 volts where as the relay requires 24 volts to switch on. The power supply to the Ind I/O is 24 volts.

Can any one let me know why this voltage is only 13 volts instead of the expected 24 volts.

Raghuram Shenoy
Raghuram Shenoy
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Asked on 4/28/16, 10:09 AM
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Nothing in the design should create this effect.

Output chip is an ITS716 by Infineon

http://www.infineon.com/dgdl/Infineon-ITS716G-DS-v01_01-en.pdf?fileId=db3a304412b407950112b428c2cf3e6d

I can only share my personal experience: I had issues like this when overdraining current from output.

Some outputs got damaged and afterwards gave different output voltages than expected.

I had to replace the baseboard or to put an additional driver to the output.

Or you can replace the ITS716 if you have skill and equipment.

Stefano Giuseppe Bonvini
Stefano Giuseppe Bonvini
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Answered on 4/28/16, 1:52 PM
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Asked: 4/28/16, 10:09 AM
Seen: 848 times
Last updated: 4/28/16, 1:52 PM