smartemea1
19-05-2011, 10:26 AM
Hi All,
I am currently faced with a voltage issue on a UNISAB III controller fitted to a Frick screw compressor. The Sabroe wiring diagram, (4849-961), indicate a voltage input onto the Power Supply terminal X20. The output to the unload solenoid from Digital Output terminal X8 is marked as "Internal Supply" but is measured as the same voltage. I am having a Neutral issue and was wondering if the supply voltage is being "isolated" from the voltage used for the unload solenoid via an internal transformer, which is not indicated on the drawing. Could this be the source of a potential Neutral issue?
I am currently faced with a voltage issue on a UNISAB III controller fitted to a Frick screw compressor. The Sabroe wiring diagram, (4849-961), indicate a voltage input onto the Power Supply terminal X20. The output to the unload solenoid from Digital Output terminal X8 is marked as "Internal Supply" but is measured as the same voltage. I am having a Neutral issue and was wondering if the supply voltage is being "isolated" from the voltage used for the unload solenoid via an internal transformer, which is not indicated on the drawing. Could this be the source of a potential Neutral issue?