ABB AC500 V3 Hardware Manual page 793

*) 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 when UPx = 24 V and from
-6 V to +30 V when UPx = 30 V.
Technical data of the digital inputs/outputs if used as outputs
Parameter
Number of channels per module
Distribution of the channels into groups
Terminals of the channels DC0 to DC7
Reference potential for all outputs
Common power supply voltage
Output voltage for signal 1
Output delay (0->1 or 1->0)
Output current
Leakage current with signal 0
Demagnetization with inductive DC load
Output switching frequency
Short-circuit-proof / overload-proof
Overload message (I > 0.7 A)
Output current limitation
Resistance to feedback against 24V signals
Max. cable length
The following drawing shows the circuitry of a digital input/output with the varistors for demag-
netization when inductive loads are switched off.
2022/01/31
Rated value per channel
Max. value (all channels together)
Fuse for UP3
With resistive load
With inductive loads
With lamp loads
Shielded
Unshielded
3ADR010278, 3, en_US
Communication interface modules (S500) > Modbus
Value
8
1 group of 8 channels
Terminals 1.0 to 1.7
Terminals 1.9...3.9 (negative pole of the
supply voltage, signal name ZP)
For all outputs terminal 3.8 (positive pole of
the supply voltage, signal name UP3)
UP3 (-0,8 V)
On request
500 mA at UP3 = 24 V
4 A
< 0.5 mA
10 A fast
Via internal varistors (see figure below this
table)
On request
Max. 0.5 Hz
11 Hz max. at 5 W max.
Yes
Yes, after ca. 100 ms
Yes, automatic reactivation after short cir-
cuit/overload
Yes (software-controlled supervision)
1000 m
600 m
Device specifications
793