ganutenator
Lifetime Supporting Member
I'm probably going to be called stupid for asking this.
I have only ever used 2 wire sensors. we would connect one wire to 24 dc+ and the return to the analog input card.
Recently, was using a banner ultra sonic sensor. Had to connect the brown to 24+, blue to 24-, the black to 24- and the return (white) to the input card.
question, is the always the case?
reason for the question. panel drawings: customer hasn't decided on which ultrasonic sensor they will be using.
I have only ever used 2 wire sensors. we would connect one wire to 24 dc+ and the return to the analog input card.
Recently, was using a banner ultra sonic sensor. Had to connect the brown to 24+, blue to 24-, the black to 24- and the return (white) to the input card.
question, is the always the case?
reason for the question. panel drawings: customer hasn't decided on which ultrasonic sensor they will be using.