Nice MC424L User Manual

ENGLISH – 17
6.7 LOCKING AND UNLOCKING THE MEMORY
a
WARNING! - This procedure locks the memory, pre-
venting the execution of Procedures A, B, C and D
described in the “Transmitter memorisation and de-
letion procedures“ paragraph
LR
24
Procedure for locking/unlocking the memory:
1. disconnect the control unit from the power supply
2. press and hold the [Radio
R
] button
3. power the control unit again (by pressing down the [Radio
R
] button)
4. after 5 seconds the “LR” LED will emit 2 slow ashes
5. release the button [Radio
R
]
6. (within 5 seconds) repeatedly press the [Radio
R
] but-
ton to select one of the following options:
– disabling of the memory lock function = LED off
– enabling of the memory lock function = LED on
7. ve seconds after last pressing the button, the “LR” LED
will emit 2 slow ashes to signal the end of the procedure.
TROUBLESHOOTING...
(troubleshooting guide)
7
7 TROUBLESHOOTING... (troubleshooting guide)
Some devices are congured for signalling the operating status or the presence of any anomalies.
7.1 SIGNALLING THROUGH WARNING LIGHT
If a warning light is connected to the FLASH output on the con-
trol unit, the light will ash once every 1 second while the ma-
noeuvre is being performed.
If any anomalies occur, the warning light will emit slow ashes
repeated twice with a 1-second interval. “Table 10” describes
the cause and possible solutions for each type of anomaly sig-
nalled by the warning light.
In case of anomaly, the “OK” LED will also emit signals. “Table
10” describes the cause and possible solutions for each type of
anomaly signalled by the “OK” LED.
5 6 7 8 9 10 11 12 13
2
3 4
OK
25
Table 10
SIGNALS EMITTED BY THE OK LED (“FIGURE 25”) AND WARNING LIGHT
Flashes Anomaly Possible solution
2 short red ashes
1-second pause
2 short red ashes
Intervention of a photocell
One or more photocells do not consent to the movement or have caused
the latter to reverse. Check for any obstacles.
3 short red ashes
1-second pause
3 short red ashes
Intervention of the
“Obstacle Detection”
function through the force
limiter
During the gate’s movement, the motors encountered more resistance.
Verify the cause and increase the motor force if necessary.
4 short red ashes
1-second pause
4 short red ashes
Intervention of the ALT
(STOP) input
At the start of the manoeuvre or during the movement itself, the ALT (STOP)
input intervened. Identify the cause.
5 short red ashes
1-second pause
5 short red ashes
Error in the internal
parameters of the control
unit
Wait at least 30 seconds then try giving a command and disconnect the
power supply if necessary. If the condition persists, there may be a serious
malfunction and the electronic board needs to be replaced.
6 short red ashes
1-second pause
6 short red ashes
The maximum limit for
consecutive manoeuvres or
manoeuvres per hour has
been exceeded
Wait for a few minutes until the manoeuvre limiting device drops to under
the maximum limit.
7 short red ashes
1-second pause
7 short red ashes
Electric circuit anomaly
Wait at least 30 seconds then try giving a command and disconnect the
power supply if necessary. If the condition persists, there may be a serious
malfunction and the electronic board needs to be replaced.
8 short red ashes
1-second pause
8 short red ashes
A command that prevents
other commands from being
executed is already present
Check the type of the “always present” command (for example, it could be
a command from a clock on the AUX input).

Nice MC424L Specifications

General

Brand	Nice
Model	MC424L
Category	Control Unit
Language	English