Fiessler ULVT - Trouble-Shooting; LED-Displays

6.3 trouble shooting The prerequisite for the troubleshooting
process is a correctly adjusted light barrier. (see chapter 6.2)
LED-display possible causes remedy
Yellow LED OFF
Yellow LED flashing
quickly (ca 4 x /s)
Fehlerzustand!
no power supply
a) internal fault. Transmitter inactive
b) voltage surge at the transmitter
check power supply
switch off power supply and then switch on again.
If yellow LED still flashes: Transmitter is defective
and must be replaced.
reduce voltage
Yellow LED flashing
slowly (ca 1 x /s)
only with cascadable transmitter
no fault!
following light curtain is interrupted.
please refer to chapter 8.10 on page 39
6 Commissioning - Trouble shooting
Transmitter
LED-display possible causes remedy
no LED illuminated
Red LED on
Orange LED on
no power supply
a) Transmitter inactive
b) Light path interrupted
c) Light barrier maladjusted or very dirt
d) Max. range exceeded
check power supply
a) Check transmitter
b) Remove obstacle from light path
c) Readjust and/or clean system
d) Check range
Red LED on
Yellow LED on
yellow and / or
Orange flashing
quickly (ca 4 x /s)
Fault!
yellow and / or
Orange flashing
slowly (ca 1 x /s)
The green LED and the red LED turn,
alternating back and forth
operating mode: with contactor con-
trol, without restart interlock
No Prompt for start release with start button
although the yellow LED lights:
a) DIP switches are not set as specified in
chapter. 3.6.
b) DIP switches contact error
c)shortcircuit at the start inputline
a) short-circuit, overcharge or side-circuit of
the outputs OSSD1/OSSD2
b) Operating mode setting does not match
the electric wiring and/or DIP switches are
not set as specified in chapter. 3.6.
c) DIP switches contact error
d) External or Internal error
e) Electromagnetic interferences
a) Check the orangener Dip-switche 3and blue Dip-
switch 6 (refer page 10)
b) Change Dip-switches 3 and 6 and switch back again
c) Check connection, wiring at the start inputline
a) check connection, wiring and output charge (max.
0,5A!)
b) Check operating mode setting and wiring
c) Change all Dip-switches and switch back again
d) Switch off power supply and then switch on again. If
LED still flashes: Disconnect all connections after ha-
ving turned of the light curtain except for the power sup-
ply, and set the DIP-switches onto the operating mode:
no restart interlock, no contactor control and equiva-
lent outputs. If the LED continue flashing, a second
emitter was recognized (refer to page 18)
or receiver is defect, replace the receiver.
e) use insulated brackets.
a) In operating mode with contactor check:
Contactors not responding or not fallen
b) only BLVT: no fault if the green LED is
also on and operating mode is floating blan-
king or reduces resolution
OSSDs connect, contactors do not at-
tract or error at the EDM inputline,
OSSDs disconnect and connect again after
shorty after that and so on
a) check contactor connections and contactor control
wiring and connection (EDM)
b) -
check contactor connections and contactor control wi-
ring and connection (EDM)
for a short time the green LED is on,
then Red and Yellow LED is on,
operating mode: with contactor
control, with restart interlock
just red LED on
OSSDs connect, contactors do not at-
tract or error at the EDM inputline,
OSSDs disconnect again
! only BLVT / ILVT!
No + 24V DC on EDM, although EDM has
been selected
-- Supply voltage dropped more than 20%?
check contactor connections and contactor control wi-
ring and connection (EDM)
- check contactor connections and contactor control
wiring and connection (EDM)
- Or Correct setting modes
- check power supply
receiver
interdiction de
redémarrage
Wi e de r a nl a uf
Justierhilfe
LS
LS frei
restart interlock
adjustment
LC interrupt
LC free
Aide d´àj ustement
libre
interrompu
unterbrochen
sperre
Sender ein
Transmitter on
Emett eur en
mar c he
interdiction de
redémarrage
Wi e de r anl a uf
Justierhilfe
LS
LS frei
restart interlock
adjustment
LC interrupt
LC free
Aide d´àj ustement
libre
interrompu
unterbrochen
sperre
interdiction de
redémarrage
Wi e de r a nl a uf
Justierhilfe
LS
LS frei
restart interlock
adjustment
LC interrupt
LC free
Aide d´àj ustement
libre
interrompu
unterbrochen
sperre
Sender ein
Transmitter on
Emett eur en
mar c he
Tabelle 28/1 Fehlersuche Sender
Table 28/2 troubleshooting receiver
Enlarged LED --> LED lights up
Small LED --> LED does not light up
Flashing LED
interdiction de
redémarrage
Wi e de r a nl a uf
Justierhilfe
LS
LS frei
restart interlock
adjustment
LC i nterrupt
LC free
Ai de d ´àj ust ement
libre
interrompu
unterbrochen
sperre
Sender ein
Transmitter on
Emett eur en
mar c he
interdiction de
redémarrage
Wi e de r anl a uf
Justierhilfe
LS
LS frei
restart interlock
adjustment
LC interrupt
LC free
Aide d´àj ustement
libre
interrompu
unterbrochen
sperre
interdiction de
redémarrage
Wi e de r a nl a uf
Justierhilfe
LS
LS frei
restart interlock
adjustment
LC interrupt
LC free
Aide d´àj ustement
libre
interrompu
unterbrochen
sperre
interdiction de
redémarrage
Wi e de r anl a uf
Justierhilfe
LS
LS frei
restart interlock
adjustment
LC interrupt
LC free
Aide d´àj ustement
libre
interrompu
unterbrochen
sperre
FIESSLER
E L E K T R O N I K
interdiction de
redémarrage
Wi e de r a nl a uf
Justierhilfe
LS
LS frei
restart interlock
adjustment
LC i nterrupt
LC free
Ai de d ´àj ust ement
libre
interrompu
unterbrochen
sperre
28
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