This digital input module receives control signals from field devices (e.g., sensors). The module has four input channels and directly connects to four 2-wire sensors. Field and system levels are electrically isolated. Please note that an additional supply module must be added for 120 (230) VAC supply.

 Number of digital inputs : 4 

 Total number of channels (module) : 4 

 Signal type : Digital 

 Signal type (voltage) : 120 VAC 

 Sensor supply : 230 VAC 

 Sensor connection : 4 x (2-wire) 

 Input characteristic : high-side switching 

 Input filter : 10 ms 

 Voltage range for signal (0) : 0 … 40 VAC 

 Voltage range for signal (1) : 79 … 230 VAC (−15 … +10 %) 

 Signal frequency (min.) : 45 Hz 

 Signal frequency (max.) : 65 Hz 

 Protection against incorrect wiring : Overvoltage protection (275 V) via varistor 

 Input data width (internal) max. : 4 bits 

 Supply voltage (system) : 5 VDC via data contacts