Mitsubishi Electric MELSEC iQ-F FX5 Series User Manual page 6

[Wiring Precautions]
WARNING
● 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, provided as an accessory, before turning on the power or
initiating operation after installation or wiring work. Failure to do so may cause electric shock.
● The temperature rating of the cable should be 80 or more.
● Make sure to wire the screw 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 User's Manual
(Hardware) of the CPU module used.
- Tightening torque should follow the specifications in the User's Manual (Hardware) of the CPU
module used.
- Tighten the screws using a Phillips-head screwdriver No.2 (shaft diameter 6mm or less). Make sure
that the screwdriver does not touch the partition part of the terminal block.
[Wiring Precautions]
CAUTION
● Perform class D grounding (grounding resistance: 100 or less) of the grounding terminal on the CPU
module and extension modules with a wire 2mm
Do not use common grounding with heavy electrical systems (refer to the User's Manual (Hardware)
for the CPU module used).
● Connect the power supply wiring to the dedicated terminals described in this manual. If an AC power
supply is connected to a DC input/output terminal or DC power supply terminal, the programmable
controller will burn out.
● Do not wire vacant terminals externally. Doing so may damage the product.
● Install module so that excessive force will not be applied to terminal blocks, power connectors, I/O
connectors, communication connectors, or communication cables. Failure to do so may result in wire
damage/breakage or programmable controller failure.
● Make sure to observe the following precautions in order to prevent any damage to the machinery or
accidents due to malfunction of the programmable controller caused by abnormal data written to the
programmable controller due to the effects of noise:
- Do not bundle the power line, control line and communication cables together with or lay them close
to the main circuit, high-voltage line, load line or power line. As a guideline, lay the power line,
control line and connection cables at least 100mm away from the main circuit, high-voltage line,
load line or power line.
- Ground the shield of the shielded wire or shield cable at one point on the programmable controller.
However, do not use common grounding with heavy electrical systems.
● For Ethernet cables to be used in the system, select the ones that meet the specifications in this
manual. If not, normal data transmission is not guaranteed.
4
2
or thicker.