Current Sensing

[Bob 5]

Rather than buy a current sensor if i have an easy in a panel already can i put a current transformer into the analogue input and monitor a pump, as the pump is 150meters from the panel all i want to do is use it as a form of knowing the pump is running or not. If this is possible could someone give me some advice on which current transformer to use and to wire it. Cheers

[radar17892]

Hi Bob 5,
it`s possible, but 150m is a long way for 0-10V signal. If you want only monitoring pump (not)running, that`s ok.
Example current sensor:  http://www.mbs-ag.com/de/pages/Produktprogramm/index.php?IdTreeGroup=42&navid=1

or you take a current sensor with frequency output to connect at digital PLC input and use a frequency measering block in easysoft.
http://www.ziehl.de/ziehl/englisch/mains_monitoring/4stwa1_e/stwa1fh_e.pdf

Regards   Thomas