Mitsubishi Electric A172SHCPUN User Manual

5. INSPECTION AND MAINTENANCE
5
−
9
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
RUN indicator not lit
RUN indicator flashes
ERROR indicator lit
ERROR indicator flashes
I/O module malfunctions
Cannot write program
Go to Section 5.4.1(2)
"Flowchart when POWER Indicator is Not Lit."
Go to Section 5.4.1(3)
"Flowchart when RUN Indicator is Not Lit."
Go to Section 5.4.1(4)
"Flowchart when RUN Indicator is Flashing."
Go to Section 5.4.1(5)
"Flowchart when ERROR Indicator is Lit."
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."
Go to Section 5.4.1(8)
"Flowchart when Program Cannot Be Written."
Normal
Abnormal
Not lit
Flash
Flash/Not lit
Lit
Lit
Lit/Flash
Flash
Lit
Not lit
Not lit

Mitsubishi Electric A172SHCPUN Specifications

General

Brand	Mitsubishi Electric
Model	A172SHCPUN
Category	Control Unit
Language	English