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Chapter 6
Troubleshooting
217
Chapter 6 Troubleshooting
6.1 Action to Be Taken upon Occurrence of Problem
Upon occurrence of a problem, take an appropriate action according to the procedure below
in order to ensure quick recovery and prevent recurrence of the problem.
1) Status LEDs and PIO Check on Controller
LED
Status of PIO
Output Signal
SYS SYS I SYS II
Operation status
*ALM output
(Note 1)
(Orange Light
is turned ON.)
(Green Light
is turned ON.)
(Green Light
is turned ON.)
Alarm generated due to Gateway
(Fieldbus error, etc.) ON
(Green Light
is turned ON.)
(Red Light is
turned ON.)
(Green Light
is turned ON.)
Alarm generated on either Axis
No.0, 2, 4 or 6 (depending on slot
the driver board is inserted)
ON
(Green Light
is turned ON.)
(Green Light
is turned ON.)
(Red Light is
turned ON.)
Alarm generated on either Axis
No.1, 3, 5 or 7 (depending on slot
the driver board is inserted)
ON
(Orange Light
is turned ON.)
(Red and
green by turn)
(Red and
green by turn)
In initializing at startup
OFF
2) Check whether an alarm occurs on the host controller (PLC, etc.).
3) Check the voltage of the main power supply (24V DC).
4) Voltage check of PIO power supply (24V DC) or Fieldbus power supply
5) Check the voltage (24V DC) of the power supply for brake (for the actuator with the brake).
6) Alarm Check
(Note1)
Check the alarm code on the teaching tool such as PC software.
7) Check the connectors for disconnection or connection error.
8) Check the cables for connection error, disconnection or pinching.
Cut off the main power of the system which this controller is installed in and remove the
cables around the measurement point (to avoid conductivity through the surrounding circuit)
before checking the conductivity.
9) Check the I/O signals.
Using the host controller (PLC, etc.) or a teaching tool such as PC software, check the
presence of inconsistency in I/O signal conditions.
10) Check the noise elimination measures (grounding, installation of power line filter, etc.).
11) Check the events leading to the occurrence of problem
(Note 1)
, as well as the operating
condition at the time of occurrence.
12) Analyze the cause.
13) Treatment
Note 1 The time of alarm generated can be recorded if the clock is set to the current time on
Gateway Parameter Setting Tool.
If the current time is set, the data is remained for approximately 10 days under the
condition that the power to the controller is OFF. If the setting is not conducted or the
time data is lost, it will be the time passed since 2000/1/1, 00:00:00 when the power is
turned ON. Even if the date and time data is lost, the generated error code is retained.
Alarms subject to this function only include those in 6.4 Alarm but do not include errors
in the teaching tool such as PC software.
Notice:
In troubleshooting, exclude normal portions from suspicious targets to narrow down
the causes. Check 1) to 11) described above before contacting us.