Technical Data of the Digital \ Outputs

Number of channels per module	8
Distribution of the channels into groups	1 group of 8 channels
Terminals of the channels DO0 to DO7	Terminals 4.0 to 4.7
Reference potential for all outputs	Terminals 2.9 … 4.9 (minus pole of the supply voltage, signal name ZP)
Common power supply voltage	For all outputs terminal 4.8 (plus pole of the supply voltage, signal name UP3)
Output voltage for signal 1	UP3 (-0.8 V)
Output delay (0->1 or 1->0)	On request
Output current
Rated value per channel	500 mA @ UP3 = 24 V
Max. value (all channels together)	4 A
Leakage current with signal 0	< 0.5 mA
Fuse for UP3	10 A fast
Demagnetization with inductive DC load	Via internal varistors (see figure below this table)
Output switching frequency
With resistive load	On request
With inductive loads	Max. 0.5 Hz
With lamp loads	11 Hz max. @ 5 W max.
Short-circuit proof / overload proof	Yes
Overload message (I > 0.7 A)	Yes, after ca. 100 ms
Output current limitation	Yes, automatic reactivation after short-circuit/overload
Resistance to feedback against 24V signals	Yes (software-controlled supervision)
Max. cable length
Shielded	1000 m
Unshielded	600 m

The following drawing shows the circuitry of a digital input/output with the varistors for demagnetization when inductive loads are switched off.

Digital input/output (circuit diagram)

1	Digital Output
2	Varistors for demagnetization when inductive loads are turned off