I want to protect a motor from overloading, using a current monitor 3UG4621-1AA30 and a window type transformer 4NC5113-0BC20, mounted on the first phase of the motor.
The monitor has a range of 3...500mA (24VDC/AC supply )and the transformer a ratio of 60/1 A.
If the nominal current of the motor is 13.8 A I should see a current of 230mA, half of the range of the current monitor.
According to the wiring diagram of the current monitor, A2 and M are internaly connected; this means that the 0VDC from my application will be connected to the voltage induced in the secondary circuit of the transformer.
If I choose 3UG46 21-1AW30 (power supply of 24..240VDC/AC), A2 and M are not connected internaly.
Has anyone used this configuration?
What would be the best solution?