18
UF 6925 / 30.08.17 en / 895
M11445
25
I
2
(A )
2
75
100
125
50
0
10
20
30
40
60
50
T ( C)
°
- current in contact paths
I , I
1
2
I = I + I
2
2
2
1
2
device mounted without distance heated by
devices with same load,
max. current at
over
4A = 2x4 A = 32A
55°C
2 contact path =
2 2
2
^
device free-standing
max. current at 55°C over
2 contact path = 8A = 2x8 A = 128A
2 2
2
^
Quadratic total current limit curve DC 24 V
M11442
25
I
2
(A )
2
75
100
125
50
0
10
20
30
40
60
50
T ( C)
°
- current in contact paths
I , I
1
2
I = I + I
2
2
2
1
2
device mounted without distance heated by
devices with same load,
max. current at
over
4A = 2x4 A = 32A
55°C
2 contact path =
2 2
2
^
device free-standing
max. current at 55°C over
2 contact path = 8A = 2x8 A = 128A
2 2
2
^
Quadratic total current limit curve DC 8 - 36 V
Characteristics
Variants
UF 6925._ _ /1 _ _:
For switching small loads of 10 mVA ... 12 VA bzw. 10 mW ... 12 W in the
ranges 2 ... 60 V und 2 ... 300 mA.
The device is also suitable for switching the maximum switching current.
However, this will burn off the gold plating of the contacts, so that switching
of small loads is no longer possible afterwards.
Ordering example for variants
UF 6925 .03 /_ _ _ /61 DC 8 ... 36 V
Nominal voltage
DC 24V
DC 8 ... 36V
UL-approval
Cross fault detection
0 = adjustable
Start-Mode
0 = adjustable
Switching capacity
0 = Standard
1 = for small loads (2 ...60 V, 2...300 mA)
(on request)
Contacts
.03 = 3 NO contacts
.22 = 2 NO contacts, 1 NC contact
Type
Failure
Potential cause
LED "Power" does not light up
- Power supply not connected
- Cross fault between S11 and S21
LED "K1" lights up,
but "K2" remains off
- Safety relay K1 is welded
(replace device)
- A 1-channel switch-off occurred on
S12 (switch channel off on S22)
LED "K2" lights up,
but "K1" remains off
- Safety relay K2 is welded
(replace device)
- A 1-channel switch-off occurred on
S22 (switch channel off on S12)
Device cannot be activated
- A safety relay is welded
(replace device)
- Incorrect setting of switch S1
Manual start mode:
- Line fault on start-button (disconnect
power supply and remove fault)
Automatic start mode:
- S33-S34 not bridged
- The device contains no parts that require maintenance.
- In case of failure, do not open the device but send it to manufacturer
for repair.
Troubleshooting
Maintenance and repairs
