Ordering Example; Troubleshooting; Maintenance And Repairs; Characteristics - DOLD SAFEMASTER LG 5925.03/034 Manuel D'utilisation

Ordering Example

LG 5925.03 _ _ /034 AC / DC 24 V

Troubleshooting

Failure
LED "Power" does not light up
LED "K1" lights up,
but "K2" remains off
LED "K2" lights up,
but "K1" 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.
Nominal voltage
Type of terminals
without indication:
terminal blocks fixed
with screw terminals
PC (plug in cage clamp):
pluggable terminal blocks
with cage clamp terminals
PS (plug in screw):
pluggable terminal blocks
with screw terminals
Contacts
Type
Potential cause
- Power supply not connected
- Cross fault between S11 and S21
- Safety relay K1 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)
Manual start mode:
- Line fault on start-button (disconnect
power supply and remove fault)
Automatic start mode:
- S33-S34 not bridged
- A safety relay is welded
(replace device)
- Incorrect setting of switch S1

Characteristics

250
200
150
100
50
0
0,1 0,3 0,5 1
switching current A
safe breaking, no continuous arcing,
max. 1 switching cycle / s
Arc limit curve under resistive load
S 2
( A ) 2
I
75
60
45
30
15
0 10 20
device mounted away from
heat generation components.
max. current at 55°C over
3 contact path = 3A = 3x3 A = 27A
device mounted without distance heated by
devices with same load.
max. current at 55°C over
3 contact path = 1A = 3x1 A = 3A
S I
2 2 2 2
= I + I + I
1 2 3
I , I , I
- current in contact paths
1 2 3
Quadratic total current limit curve
15
3 5 10
°
T ( C)
30 40 50 60
M11703
^
2 2 2
^
2 2 2
LG 5925.03/034 / 18.11.21 en / 466A