Variants; Troubleshooting; Maintenance And Repairs; Characteristics - DOLD SAFEMASTER UF 6925 Translation Of The Original Instructions

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

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
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
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)
- 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

Characteristics

2 ( A ) 2
I
125
100
75
50
25
0 10 20 30
device free-standing
max. current at 55°C over
^
2 contact path = 8A = 2x8 A = 128A
device mounted without distance heated by
devices with same load,
max. current at 55°C over
^
2 contact path = 4A = 2x4 A = 32A
S I = I + I
2 2 2
1 2
I , I
- current in contact paths
1 2
Quadratic total current limit curve DC 24 V
2
( A ) 2
I
125
100
75
50
25
0 10 20 30
device free-standing
max. current at 55°C over
^
2 contact path = 8A = 2x8 A = 128A
device mounted without distance heated by
devices with same load,
max. current at 55°C over
^
2 contact path = 4A = 2x4 A = 32A
S I = I + I
2 2 2
1 2
I , I
- current in contact paths
1 2
Quadratic total current limit curve DC 8 - 36 V
18
T ( C) °
40 50 60
M11445
2 2 2
2 2 2
°
T ( C)
40 50 60
M11442
2 2 2
2 2 2
UF 6925 / 30.08.17 en / 895