Mitsubishi MELSEC User Manual

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9.2 Requirement to Conform to the Low Voltage Directive
9.2.5 Grounding
9
EMC AND LOW VOLTAGE DIRECTIVES
9.2.5 Grounding
There are the following two different grounding terminals.
Use either grounding terminal in an earthed status.
Protective grounding : Maintains the electrical safety of the PLC and improves the
noise resistance.
Functional grounding : Improves the noise resistance.
9.2.6 External wiring
(1) 24VDC external power supply
This power supply must include a reinforced insulation for 24VDC circuit to prevent
dangerous voltage for CC-Link Safety remote I/O module.
(2) External devices
When a device with a hazardous voltage circuit is externally connected to the PLC,
use the device whose interface circuit section to the PLC has the reinforced insulation
against the hazardous voltage circuit.
(3) Reinforced insulation
The reinforced insulation covers the withstand voltages shown in Table9.3.
Table9.3 Reinforced Insulation Withstand Voltage
(Installation Category II, source : IEC664)
Rated voltage of hazardous
voltage area
Surge withstand voltage
(1.2/50 s)
150VAC or below 2500V
300VAC or below 4000V

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)