Troubleshooting For Cpu Module And I/O Modules - Mitsubishi Electric A173UHCPU User Manual

5. INSPECTION AND MAINTENANCE

5.4.1 Troubleshooting for CPU Module and I/O Modules

This section explains how to determine the cause of problems occurring in the
SCPU of CPU module or I/O modules, and gives descriptions and remedies the
errors indicated by each error code. This manual does not give troubleshooting
flowcharts that apply to the use of MR-H-BN, MR-J2S-B and MR-J2-B servo
amplifiers. Refer to the instruction manual(s) for the servo amplifier(s) you are
using:
MITSUBISHI AC Servo MR-H-BN Instruction Manual
MITSUBISHI AC Servo MR-J2S-B Instruction Manual
MITSUBISHI AC Servo MR-J2-B Instruction Manual
(1) Bagic troubleshooting flow charts
The flowcharts below are classified according to symptoms.
Problem occurs
POWER indicator not lit
Lit
RUN indicator not lit
Lit/Flash
RUN indicator flashes
Lit
ERROR indicator lit
Flash/Not lit
ERROR indicator flashes
Not lit
I/O module malfunctions
Normal
Cannot write program
Not lit
Go to Section 5.4.1(2)
"Flowchart when POWER Indicator is Not Lit."
Not lit
Go to Section 5.4.1(3)
"Flowchart when RUN Indicator is Not Lit."
Flash
Go to Section 5.4.1(4)
"Flowchart when RUN Indicator is Flashing."
Lit
Go to Section 5.4.1(5)
"Flowchart when ERROR Indicator is Lit."
Flash
Go to Section 5.4.1(6)
"Flowchart when ERROR Indicator is Flashing."
Go to Section 5.4.1(7)/(9)
"Flowchart when Output Module Load Does Not Turn
On." and "Possible Problems with I/O Modules."
Abnormal
Go to Section 5.4.1(8)
"Flowchart when Program Cannot Be Written."
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