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WHAT TO DO IF... (troubleshooting guide)
Some devices are designed to emit signals which help you recognise their
operating status or any problems.
If the WLT multi-purpose lamp is connected to the FLASH output on the power
supply and set with the flashing function, during the performance of a manoeu-
vre, it emits a flashing light every second. If any problems are encountered, the
flashing emits shorter flashes, which are repeated twice, divided by a 1 second
Flashes
Problem
1 brief flashing
Error on the Bluebus system
1 second pause
1 brief flashing
2 brief flashes
Photocell activation
1 second pause
2 brief flashes
3 brief flashes
Activation of the "Obstacle Detection"
1 second pause
by the force limiting device
3 brief flashes
4 brief flashes
STOP input activation
1 second pause
4 brief flashes
5 brief flashes
Error in the internal parameters of the
1 second pause
control unit
5 brief flashes
6 brief flashes
Maximum limit of consecutive ma noe -
1 second pause
u vres or manoeuvres per hour ex ce e -
6 brief flashes
ded.
7 brief flashes
Electrical circuits fault
1 second pause
7 brief flashes
8 brief flashes
A command has already been given,
1 second pause
which does not allow any other com-
8 brief flashes
mands to be performed
9 brief flashes
The automation system was secured
1 second pause
by a "Secure the automation system"
9 brief flashes
command
LED
BLUEBUS
Always off
Always on
1 flash per second
2 fast flashes
Series of flashes divided by a
one-second pause
STOP
Always off
Always on
P.P.
Always off
Always on
L1 - L2
Slow flashing
L3 - L4
Slow flashing
TABLE 10 - Flashing light signals (FLASH)
TABLE 11 - Signals from the LEDs on the control unit (fig. 23)
Problem
Fault
Serious fault
All ok
Change in the status of the inputs
Other
Activation of the devices connected to the
STOP input
All ok
All ok
Activation of the P.P. input
Change in the number of devices
connected to the Bluebus or device recogni-
tion not performed
The recognition of the positions of the
mechanical stops was not carried out
pause. Table 10 describes the cause and solution for each type of signal.
The LEDs on the control unit also emit signals; Table 11 describes the cause
and solution for each type of signal.
Solution
The check of the devices connected to the Bluebus system, which is carried out at the
beginning of the manoeuvre, does not correspond to the devices stored during the
recognition phase. There might be devices which are disconnected or out of order, so
you need to check and replace them if necessary. If modifications have been made, you
will need to repeat the recognition of devices (see paragraph 4.7).
One or more photocells are not are not permitting movement or during travel they
caused the movement to be inverted; check for any obstacles.
During the movement, the motors encountered greater effort; verify the cause and
increase the force of the motors if necessary
At the beginning of the manoeuvre or during the movement, one of the devices connect-
ed to the STOP input was activated; verify the cause.
Wait at least 30 seconds and then try to repeat the command and if necessary cut off the
power supply; if the status remains the same, there might be a serious failure and the
electrical board may need replacing.
Wait a few minutes in order to allow the manoeuvres limiting device to return to below
the maximum limit.
Wait at least 30 seconds and then try to repeat the command and if necessary cut off
the power supply; if the status remains the same, there might be a serious failure and the
electrical board may need replacing.
Check the nature of the command in progress; it could for example be the command
from a clock on the "STEP-STEP" input.
Release the automation system by sending the "Release the automation system" com-
mand.
Solution
Ensure the control unit is powered; check whether the fuses have blown.
In this case, check the cause of the fault and replace them with others of
the same value
There is a serious fault: try to cut off the electricity supply to the control unit
and if the status remains, then you will need to replace the electrical board
Normal operation of the control unit
If it normal if a variation in one of the input takes place (PP, STOP):
photocells activation or a command is transmitted with a transmitter
Please refer to Table 10
Check the devices of the STOP input
STOP input activated
P.P. input deactivated
It is normal if the device connected to the P.P. input is activated
The recognition of devices must be carried out (see paragraph 4.7)
The recognition must be carried out (see paragraph 4.8).
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