SMC Networks D-M7BA Series Operation Manual page 7

∗Wiring
•Do not pull the lead wires.
Especially never lift actuator equipped with Auto switch by holding the lead wires.
It can result in damage to inside of Auto switch causing malfunction.
•Do not bend or apply tensile stress to lead wires repeatedly.
Wiring with repetitive bending stress or tensile stress can cause peel of a sheath.
If the lead wire can move, fix it near the body of the Auto switch.
A bend radius of about 17 mm is recommended.
•Connect wires and cables correctly.
Miswiring can break the Auto switch depending on the miswired circuit.
•Do not connect wires while the power is on.
Otherwise it can break the circuit inside the Auto switch causing malfunction.
•Do not lay wires or cables with power cable or high-voltage cable in the same wiring route.
Lay the wires to the Auto switch to a wire duct or in a protective tube other than those for power cables or
high-voltage cables to prevent contamination with noise or induced surge voltage from power lines or high-voltage
lines.
•Verify the insulation of wiring.
Poor insulation (interference with other circuit, poor insulation between terminals and etc.) can introduce excess
voltage or current to the Auto switch causing damage.
•Keep wiring as short as possible to prevent contamination from noise and induced surge voltage.
Do not use a cable longer than 100 m.
∗Environment
•Never use the product for a corrosive gas or liquid.
It can cause failure or malfunction.
•Do not use the product in a place where strong magnetic field exists.
It can cause a malfunction of the Auto switch, or demagnetization of a magnet inside actuator.
•Do not use the Auto switch in an environment where the Auto switch is always splashed with water
drips.
It can cause poor insulation or malfunction due to swelling of a resin filled inside the Auto switch.
•Do not use the product in an atmosphere containing oils or chemicals.
Use of the Auto switch in an atmosphere containing various oils or chemicals such as coolant or detergent can
result in giving bad influence (poor insulation, malfunction die to swelling of a resin filled inside the Auto switch, or
hardening of lead wires) even if in a short operating period.
•Do not use the product in an atmosphere where steel dusts accumulate or magnetic bodies are
gathered closely.
When an amount of steel chips or steel dusts such as sputters of welding accumulate around an actuator equipped
with Auto switch, or magnetic bodies (those attracted by magnet) are gathered closely to the actuator, they can
weaken a magnet inside the actuator causing inoperativeness of the Auto switch.
•Do not use the product in an environment where heat cycle exists.
Heat cycles other than ordinary change of the temperature can affect the inside of Auto switch.
•Do not use the Auto switch nearby a place where electric surges are generated.
Internal circuit elements of Auto switch can deteriorate or break when equipment generating a large surge
(electromagnetic lifter, high frequency induction furnace, motor, etc.) is located near the Auto switch. Provide surge
preventives, and avoid interference.
•Do not use a load generating surge voltage.
Use Auto switch equipped with surge absorber when a surge-generating load such as a relay or solenoid valve is
driven directly.
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No.D-※S-OMZ0004