Digital Inputs/Outputs if Used as Inputs

Parameter		Value
Number of channels per module		16 digital inputs
Reference potential for all inputs		Terminals 1.9, 2.9, 3.9 and 4.9 (minus pole of the process supply voltage, signal name ZP)
Input current per channel:
	Input voltage +24 V	Typ. 5 mA
	Input voltage +5 V	> 1 mA
	Input voltage +15 V	> 2 mA
	Input voltage +30 V	< 8 mA
Input type acc. to EN 61131-2		Type 1
Input delay (0->1 or 1->0)		Typ. 8 ms, configurable from 0.1 to 32 ms
Input signal voltage		24 VDC
Signal 0		-3 V…+5 V *)
Undefined signal		> +5 V…<+15 V
Signal 1		+15 V…+30 V
Ripple with signal 0		Within -3 V…+5 V *)
Ripple with signal 1		Within +15 V…+30 V
Max. cable length:
	Shielded	1000 m
	Unshielded	600 m

*) Due to the direct connection to the output, the demagnetizing varistor is also effective at the input (see figure) above. This is why the difference between UPx and the input signal may not exceed the clamp voltage of the varistor. The varistor limits the voltage to approx. 36 V. Following this, the input voltage must range from - 12 V to + 30 V if UPx = 24 V and from - 6 V to + 30 V if UPx = 30 V.