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③
Observe the proper tightening torque for mounting an auto switch.
When an auto switch is tightened beyond the range of tightening torque, auto switch mounting screws,
auto switch mounting brackets or auto switch may be damaged.
On the other hand, tightening below the range of tightening torque may allow the auto switch to slip out
of position.
④
Mount a switch at the center of the operating range.
Adjust the mounting position of an auto switch so that the piston stops at the center of the operating
range (the range in which a switch is ON). (The mounting position shown in a catalog indicates the
optimum, position at stroke end.) If mounted at the end of the operating range (around the borderline of
ON and OFF), operation will be unstable.
Wiring
①
Avoid repeatedly bending or stretching lead wires.
Broken lead wires will result from repeatedly applying bending stress or stretching forces to the lead
wires.
②
Be certain to connect the load before power is applied.
<2 wire type>
If the power is turned ON when an auto switch is not connected to a load, the auto switch will be
instantly damaged because of excess current (short circuit).
③
Confirm proper insulation of wiring.
Be certain that there is no faulty wiring insulation (contact with other circuits, ground fault, improper
insulation between terminals, etc…) Damage may occur due to excess current flow into a switch.
④
Do not wire with power lines or high voltage lines.
Wire separately from power lines or high voltage lines, avoiding parallel wiring or wiring in the same
conduit with these lines. Control circuits, containing auto switches, may malfunction due to noise from
these other lines.
⑤
Do not allow short-circuit of loads.
<Reed switch>
If the power is turned ON with a load in a short circuited condition, the auto switch will be instantly
damaged because of excess current flow into the switch.
<Solid state switch>
All models of PNP output type auto switches do not have built-in short circuit protection circuits. If a
load is short circuited, the auto switch will be instantly damaged as in the case of reed auto switches.
Take special care to avoid reverse wiring with the brown power supply line and the black output line on
3-wire type auto switches.
Caution
2020-10-13 10:33
DI987004
