Connection Of Input/Output Lines And Tightening Torques - Mitsubishi Electric FX3S Series User Manual

FX /FX /FX
3S 3G 3GC
Built-in Positioning Functions
3.

Connection of Input/Output Lines and Tightening Torques

This chapter describes how to connect the input/output lines and the terminal tightening torques.
WIRING PRECAUTIONS
• Make sure to cut off all phases of the power supply externally before attempting installation or wiring work.
Failure to do so may cause electric shock or damage to the product.
• Make sure to attach the terminal cover, offered as an accessory, before turning on the power or initiating operation
after installation or wiring work.
Failure to do so may cause electric shock.
WIRING PRECAUTIONS
• Connect the AC power supply to the dedicated terminals specified in the manual of the PLC main unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
• Connect the DC power supply to the dedicated terminals specified in the manual of the PLC main unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
• Do not wire vacant terminals externally.
Doing so may damage the product.
• Perform class D grounding (grounding resistance: 100 or less) to the grounding terminal on the FX
FX
Do not use common grounding with heavy electrical systems (refer to the manual of the PLC main unit).
• Perform class D grounding (grounding resistance: 100 or less) to the grounding terminal on the FX
PLC main unit with a wire as thick as possible.
Do not use common grounding with heavy electrical systems (refer to the manual of the PLC main unit).
• When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
• Install module so that excessive force will not be applied to I/O connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
• Connect input/output cables securely to their designated connectors.
Loose connections may cause malfunctions.
• Make sure to properly wire the terminal block in accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions or
damage to the product.
- The disposal size of the cable end should follow the dimensions described in the manual.
- Tightening torque should follow the specifications in the manual.
- Tighten the screws using a Phillips-head screwdriver No.2 (shaft diameter 6mm (0.24") or less). Make sure that
• Make sure to properly wire to the terminal block (European type) in accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions or
damage to the product.
- The disposal size of the cable end should follow the dimensions described in the manual.
- Tightening torque should follow the specifications in the manual.
- Twist the end of strand wire and make sure that there are no loose wires.
- Do not solder-plate the electric wire ends.
- Do not connect more than the specified number of wires or electric wires of unspecified size.
- Affix the electric wires so that neither the terminal block nor the connected parts are directly stressed.
• Make sure to properly wire to the FX Series terminal blocks in accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions or
damage to the product.
- The disposal size of the cable end should follow the dimensions described in the manual.
- Tightening torque should follow the specifications in the manual.
- Tighten the screws using a Phillips-head screwdriver No.2 (shaft diameter 6mm (0.24") or less). Make sure that
B - 42
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/FX /FX PLC User's Manual - Positioning Control Edition
3U 3UC
PLC main unit with a wire 2 mm
3U
the screwdriver does not touch the partition part of the terminal block.
the screwdriver does not touch the partition part of the terminal block.
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3 Connection of Input/Output Lines and Tightening Torques
2
or thicker.
/FX /
3S 3G
/FX
3GC 3UC