IAI America REXT - Manual (Page 382)


Part 3 Maintenance
Chapter 1 T
roubleshooting
350
Part 3 Maintenance
Part 3 Maintenance
Chapter 1 Troubleshooting
1.1 Actions to Be Taken upon Problems
If you encountered a problem, follow the procedure below for speedy recovery and to prevent the same problem from
occurring again:
a. Check the LED indicators on the Gateway R unit
RUN/ALM, ERROR-T, ERROR-C, STATUS-0, STATUS-1, EMG
b. Check the host controller (PLC master station) for abnormality
c. Check the LED indicators on the controller unit
SV/ALM, TX/RX, STATUS0 to STATUS3
(If the ALM LED is illuminating in red, the STATUS0 to STATUS3 LEDs indicate an applicable simple alarm
code.)
d. Check the LED indicators on the simple absolute R unit
RDY/ALM, STATUS0 to STATUS1
e. Check if the power-supply voltage is within a range of 24 V r 10%
With a DeviceNet system, check the communication power supply (24 V).
f. Check the wiring of the ROBONET communication connection board, simple absolute connection board, motor
cable and encoder cable
g. Check the network cable connection
(In particular, pay attention to the connection points on the terminal block and connector.)
h. Check the installation condition of network terminal resistor and their resistance values
i. Conduct operation check using the teaching pendant or PC software
Connect the teaching pendant or PC software to the Gateway R unit and set the MODE switch to “MANU.” In
this condition, operate each axis and check if an alarm generates.
j. Check the I/O signals transmitted between the PLC and controller unit
[1] On the PLC side, check the I/O signals using the monitor function of a dedicated tool (Mitsubishi GX
Developer, Omron CX Programmer, etc.)
[2] On the control unit side, check the I/O signals using the status monitor function of the teaching pendant or
PC software.
[3] Confirm that the I/O signals checked in steps [1] and [2] above are consistent.
k. Identify the background leading to the problem as well as the operating condition when the problem occurred
l. Analyze the cause of problem
m. Take appropriate actions
If the problem cannot be resolved, contact IAI after conducting the checks in a to k.
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