Safety engineering
Technical data
l
172
EDS84ASC552 EN 6.0
10.5
Technical data
Supply
The inputs and outputs are isolated and designed for a low−voltage supply through a safely
separated power supply unit (SELV/PELV) of 24 V DC. P/N switching input signals and test
pulses
1 ms are permissible.
Active sensors are directly wired to the X80 terminal strip.
Passive sensors are wired to the X80 terminal strip via a switching device. The switching
device must comply with the required control category of the application.
There is no monitoring for short circuits.
Detailed features of the inputs and outputs of the safety unit
Terminal
Specification
[Unit]
min.
typ.
max.
SIA, SIB
Low signal
V
−3
0
5
High signal
V
15
24
30
Input capacitance at switch−off
nF
4
Input delay (tolerated test pulse)
ms
1
Switch−off time (depending on the controller)
ms
2.5
4
Running time
ms
3
SIA
Input current
mA
100
170
Input capacitance at switch−on, reduced
F
20
SIB
Input current
mA
28
35
Input capacitance at switch−on, reduced
F
5
GI
Ground for SIA/SIB
24O, GO
Supply voltage through safely separated power supply
unit (SELV/PELV)
V
18
24
30
DO
Low signal
V
0
0.8
High signal
V
17
24
29
24O, GO, DO
Output current
A
0.7
Truth table
Inputs
Outputs
Description
Enable
SIA
SIB
DO1
0
0
1
"Safe torque off" is activated
0
0
1
0
0
1
0
0
0
1
1
0
Drive is active
1
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