Not necessarily. It depends on whether the IO card of PLC/DCS provides external power supply.
CZ3047 outputs active signals, which are adapted to the situation where the IO card of PLC/DCS does not provide external power supply.
If the IO card of PLC/DCS provides external power supply, it needs the CZ3047T to output 4~20mA passive signals.
 
             
                     
                     
                 
                 
             
         
         
        