Troubleshooting
Failure
LED "Power" does not light up
LED "S22/K3" lights up,
but "S12/K2" remains off
LED "S12/K2" lights up,
but "S22/K3" remains off
Device cannot be activated
Maintenance and repairs
- The device contains no parts that require maintenance.
- In case of failure, do not open the device but send it to manufacturer
for repair.
Potential cause
Power supply not connected
- Safety relay K3 is welded
(replace device)
- A 1-channel switch-off occurred on
S12 (switch channel off on S22)
- Safety relay K2 is welded
(replace device)
- A 1-channel switch-off occurred on
S22 (switch channel off on S12)
- Safety relay is welded
(replace device)
- Safety relay K1 via X5 energized
Characteristics
Continuous current limit curves
as a function of ambient temperature
electric life DC13 24V DC / t on 0,4s; t off 9,6s
2 contacts in series
1
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,1
0
0
1
2
3
4
5
switching current I [A]
Contact service life
250
200
150
100
50
0
1
0,1
0,3 0,5
switching current A
safe breaking, no continuous arcing,
max. 1 switching cycle / s
Arc limit curve with resistive load
15
6
7
8
9
10
5
3
10
BN 5983 / 22.01.19 en / 105A