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problem
LED is not lit
No power supply
LED flashes
The power supply collapses periodically -
sporadically white
device software reboots each time
LED flashes red or
The residual ripple of the supply voltage is too
LED illuminates red
high
Temperature too high
Standard signal is < 4 mA; cable break
Valve opens even
Operating direction of the set-point value has
though it should
been set incorrectly
close
Motor is making an
Gearbox or motor blocked
unusual droning
noise
Valve is not opening
Low power function activated; motor torque
or closing correctly
for medium pressure too low
Valve is not sealed
Dirt between seal and valve seat
16
All manuals and user guides at all-guides.com
possible cause
english
Type 3270, 3275
Maintenance,troubleshooting
remedial action
→
Check the electrical connections
→
Select power supply with adequate power
→
Check cable for possible lose connections
→
Use power supply with a smooth output voltage at the required
power
→
After eliminating the fault, restart the device for normal operating
(isolate from power supply)
→
Observe max. ambient temperature / medium temperature; if
required reduce duty cycle (see Derating curve)
→
After eliminating the fault, restart the device for normal operating
(isolate from power supply)
→
Check cable for possible lose connections
→
Change direction of the input signal
→
Return device to the manufacturer to have the fault repaired
→
Deactivate energy save function
→
Install dirt filter and return device to the manufacturer for cleaning
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