Lütze 746400, Operation Instructions Manual, Page: 35 / 89

Digital I/O Modules
▪
Digital Inputs
31
Input 72 V Module
Number 16
Data Width in the Process Image 2 Byte Inputs
Current Consumption at 24 V DC nom. 10 mA
Potential Insulation Voltage Insulation
▪ AC 1.5 kV inputs and electronic
▪ AC 1.5 kV between potential A,
B, C and D
Input Voltage “0“ Signal:
▪ DC 0...18 V
“1“ Signal:
▪ DC 36...90 V
Input Current “0“ Signal:
▪ 0 mA
1 Signal at DC 72 V:
▪ min. 8 mA for 7 ms when
powering up,
sloping to min. 2 mA
„1“ Signal Threshold:
▪ max. 15 mA at DC 90 V
inrush current, min 1 mA at DC
50.4 V constant current
Limit Threshold (thermic) 10 Hz at 50 % ED
Module Status Flag The module status flag remains “0“.
(“0“ = no hardware error)