Mitsubishi Electric LE-40MT Series Handbook page 5

[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 properly wire to the terminal block (Spring clamp 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.
- Twist the ends of stranded wires 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.
[WIRING PRECAUTIONS]
CAUTION
● Perform class D grounding (grounding resistance: 100  or less) of the grounding terminal on the
tension controller with a wire 0.2 to 1.5 mm
systems.
● 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 tension 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 wire, or
communication cables. Failure to do so may result in wire damage/breakage or tension 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 tension controller due to the effects of noise.
- Do not bundle the power 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 communication cables at least 100 mm away from the main circuit, high-voltage line, load
line or power line.
- Ground the shield of the shielded wire or shielded cable at one point on the tension controller.
However, do not use common grounding with heavy electrical systems.
- Ground the shield of the analog input/output cable at one point on the signal receiving side.
However, do not use common grounding with heavy electrical systems.
[STARTUP AND MAINTENANCE PRECAUTIONS]
WARNING
● Do not touch any terminal while the tension controller's power is on. Doing so may cause electric
shock or malfunctions.
● Before cleaning, cut off all phases of the power supply externally. Failure to do so in the power ON
status may cause electric shock.
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. Do not use common grounding with heavy electrical
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