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Ext I/O on vero power supply

PostPosted: July 16th, 2017, 11:53 am
by lsellens
I had a whole bunch of these vero pk series power supplies fall into my lap.
I'm interested in using the ext I/O to control them remotely, but having trouble finding any documentation on the communication it uses. I'm hoping someone will know of have better google-fu then I. It has ext I/O - and + also a PF - and + which looks like signalling for a power failure, also sensor - and + which appears to just output 5v on the 5 volt model. The board has a HEF4093BT Quad 2-input NAND Schmitt trigger if that helps. Any info helps. Thanks in advance!

Re: Ext I/O on vero power supply

PostPosted: July 19th, 2017, 12:27 pm
by lsellens
Just wanted to update this in case someone else needs it. I contacted the manufacture and got this response.

a) Remote off:
This is an analogue input. If 4,5V...30V is applied between +Ext E/A pin and –Ext E/A pin the converter is off.
Without an signal or with an signal <0,6V the unit is on

b) Powerfail is a a warning signal indication that the AC input voltage is missing
You have at least 6ms time left to stop your operation before the output voltage will drop beneath 95% of the nominal voltage

Depending on the converter type the warning signal is TTL high or open collector type.