Mitsubishi MELSEC User Manual

12
TROUBLESHOOTING
12.2 Troubleshooting Flowchart
12.2.3 Flowchart for when the "POWER" LED turns off
12 - 5
9
EMC AND LOW VOLTAGE DIRECTIVES
10
LOADING AND INSTALLATION
11
MAINTENANCE AND INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
12.2.3 Flowchart for when the "POWER" LED turns off
The following shows the flowchart for when the "POWER" LED of the power supply
module turns off at of the programmable controller power-on or during operation.
(To next page)
The "POWER" LED has turned off.
Is there a
power supply?
Is the power
supply module fixed?
Completed
Properly fix the power supply module.
The base unit that includes the
corresponding power supply module
is faulty.
How is the "POWER" LED?
How is the "POWER" LED?
Remove all modules other than
the power supply module from
the base unit.
YES
YES
YES
NO
NO
NO
Off
Off
Off
Off
On
On
On
On
Supply power.
Off
The "POWER" LED of the power
supply module is faulty. (Replace it
by a normal power supply module.)
On
How is the "POWER" LED?
The supply voltage should be within
the rated range.
How is the "POWER" LED?
Is the power
supply voltage within
the voltage range given in the
specifications?
Has the
"ALIVE" LED of the
CPU module turned on?

Mitsubishi MELSEC Specifications

General

Category	Programmable Logic Controller (PLC)
Manufacturer	Mitsubishi Electric
Series	MELSEC
Programming Languages	Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), Instruction List (IL), Sequential Function Chart (SFC)
Communication Protocols	Ethernet, CC-Link, RS-232, RS-485, USB, Profibus, Modbus
Model Series	FX, Q, L, iQ-R, iQ-F
Input Voltage	100-240V AC, 24V DC (varies by model)
Memory Capacity	Varies widely depending on the CPU module and series. Ranges from kilobytes to megabytes.
I/O Points	16 to 8192 points (varies by model)
Communication Ports	Ethernet, RS-232, RS-485, USB (varies by model)
Programming Software	GX Works2, GX Works3, GX Developer
Operating Temperature	0°C to 55°C
Storage Temperature	-25°C to 75°C
Humidity	5% to 95% (non-condensing)
Vibration Resistance	10 to 57Hz, 0.075mm amplitude; 57 to 150Hz, 9.8m/s² acceleration
Shock Resistance	147m/s², 3 times in each direction (X, Y, Z)
Protection Class	IP20 (varies by model)
CPU Processing Speed	0.02μs to 0.1μs per instruction (varies by model)