Mitsubishi MELSEC User Manual

10
LOADING AND INSTALLATION
10.3 Wiring
10.3.1 The precautions on the wiring
10 - 21
9
EMC AND LOW VOLTAGE DIRECTIVES
10
LOADING AND INSTALLATION
11
MAINTENANCE AND INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
POINT
1. Separate the ground of the surge absorber for lightening (E1) from that of the
PLC (E2).
2. Select a surge absorber for lightening whose power supply voltage does no
exceed the maximum allowable circuit voltage even at the time of maximum
power supply voltage elevation.
(2) Grounding
For grounding, perform the following:
• Use a dedicated grounding wire as far as possible. (Grounding resistance of
100 or less.)
• When a dedicated grounding cannot be performed, use (2) Common Grounding
shown below.
• For grounding a cable, use the cable of 2 mm
2
or more.
Position the ground-contact point as closely to the sequencer as possible, and
reduce the length of the grounding cable as much as possible.
Figure 10.23 Grounding procedures
(3) Joint grounding Not allowed
Grounding
PLC
Another
equipment
PLC
Another
equipment
PLC
Another
equipment
Grounding
(1) Independent grounding Best (2) Common grounding Good

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)