Mitsubishi Electric AJ65BT-D62 User Manual

MELSEC-A
11. TROUBLESHOOTING
11 - 2
11.3 How to Check an Error with the LED Lamps
This section describes how to check an error using the LED lamps of the high-speed
counter module.
For errors related to the programmable controller CPU and master module, refer to
the programmable controller CPU and master module user's manuals.
(1) If the RUN LED of the high-speed counter module goes off
Cause Corrective Action
Watchdog timer error occurred. Switch on power of the high-speed counter module again
*1
.
If the RUN LED is not lit after power is switched on again, the
hardware may be faulty. Please consult your local Mitsubishi
representative.
(2) If the L RUN LED of the high-speed counter module goes off
Cause Corrective Action
Watchdog timer error occurred. Switch on power of the high-speed counter module again
*1
.
If the L RUN LED is not lit after power is switched on again,
the hardware may be faulty. Please consult your local
Mitsubishi representative.
Cable is broken or shorted. Check for a broken or shorted cable among transmission
cables and repair it.
Master station stopped link. Check for an error at master station.
24V power is not supplied to the high-speed
counter module or voltage is insufficient.
Check the 24V power voltage.
Station number was repeated. Switch power on again
*1
after correcting the station number
setting of the module of which station number was repeated.
Switch setting is outside the permissible range
(station number 0 or not less than 62, transmis-
sion speed 5 to 9).
Correct the switching setting and switch power on again
*1
.
(3) If the L ERR. LED of the high-speed counter module flickers
Cause Corrective Action
Station number or transmission speed switch
setting was changed during normal operation.
Return the station number or transmission speed switch
setting to the old value and switch power on again
*1
.
If the L RUN LED is not lit after power is switched on again,
the hardware may be faulty. Please consult your local
Mitsubishi representative.
Station number or transmission speed switch is
faulty
If the L ERR. LED begins to flicker even though switch setting
was not changed during operation, the hardware may be
faulty. Please consult your local Mitsubishi representative.
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Mitsubishi Electric AJ65BT-D62 Specifications

General

Brand	Mitsubishi Electric
Model	AJ65BT-D62
Category	Control Unit
Language	English