PWM Transducers and I/NET ASCs

Issue

The PWM Transducer is responding as though it is receiving a continuous signal from I/NET ASC

Product Line

TAC I/NET

Environment

  • I/NET software all versions
  • Any I/NET ASC

Cause

The triac device on the ASC does not totally drop the voltage to zero (0V), thus the PWM input never sees a pulse.

Resolution

Install a 0.47µF capacitor between the input and ground terminals of the PWM transducer. It will take the bleed voltage to zero and the transducer will see a pulse value.