Technical Data of the Digital Inputs

Number of channels per module 8
Distribution of the channels into groups 4 groups of 2 channels each
Terminals of the channels I0 to I7 See figure Electrical Connection Digital Input/Output Module DX531
Electrical isolation 2500 V AC from the rest of the module (I/O-Bus)
Indication of the input signals 1 yellow LED per channel, the LEDs are only operating if the DX531 module is initialized
Input type acc. to EN 61131-2 Type 2
Input delay (0->1 or 1->0) Typ. 20 ms
Input signal voltage 230 V AC or 120 V AC
Input signal range 0…265 V AC
Input signal frequency 47…63 Hz
Input characteristic According EN 61132-2 Type 2
Signal 0 0…40 V AC
Undefined signal > 40 V AC…< 74 V AC
Signal 1 74…265 V AC
Input current per channel  
Input voltage = 159 V AC > 7 mA
Input voltage = 40 V AC < 5 mA
Overvoltage protection Yes
Max. cable length  
Shielded 1000 m
Unshielded 600 m