N
Hello,
i designed and wired a 2-wire current loop where a 4-20mA signal was to be transmitted to a Yokogawa recorder and a Schneider mixed module plc 170 AMM 090 00. My challenge was with the plc module which could not pick up current signal within the loop but the recorder was fine. It is a single loop, and i ended up wiring across voltage terminals with a shunt 250 ohm and the module accepted the 1-5 volt signal.
My question is how come the current could not be read by the plc?
i designed and wired a 2-wire current loop where a 4-20mA signal was to be transmitted to a Yokogawa recorder and a Schneider mixed module plc 170 AMM 090 00. My challenge was with the plc module which could not pick up current signal within the loop but the recorder was fine. It is a single loop, and i ended up wiring across voltage terminals with a shunt 250 ohm and the module accepted the 1-5 volt signal.
My question is how come the current could not be read by the plc?