2. Do not use in an environment where the auto switch will be continually exposed to water.
Although auto switches satisfy IEC standard IP67 construction expect some models (D-A3
□
, A44
□
,
G39
□
, K39
□
, RNK, RPK) do not use auto switches in applications where continually exposed to water
splash or splay. This may cause improper insulation or malfunction.
3. Do not use in an environment with oil or chemicals.
If auto switches are used in an environment containing coolant, cleaning solvent, various oils, or
chemicals even for a short period of time, this may adversely affect the auto switches, resulting in
improper insulation, malfunction due to swelling of the potting resin, or hardening of the lead wires.
4. Do not use in an environment with temperature cycles.
If temperature cycles other than normal temperature changes are applied, this may adversely affect the
insides of the auto switches.
5. Do not use in an environment where there is excessive impact shock.
<Reed>
When excessive impact (300m/s
2
or more) is applied to a reed auto switch during operation, the
contacts may malfunction and generate or cut off a signal momentarily (1ms or less). Please consult
with SMC if a solid state auto switch can be used according to the environment.
6. Do not use in an area where surges are generated.
<Solid state>
If there is an equipment unit (electromagnetic lifter, high-frequency induction furnace, motor, or radio,
etc.) that generates large surges or electromagnetic waves around cylinders with solid state auto
switches or actuators, this may cause the circuit element inside the auto switch to break.
7. Avoid accumulation of iron waste or close contact with magnetic substances.
If many iron particles, such as cutting chips or spatters accumulate around a cylinder with the auto
switches or an actuator or if a magnetic substance (attracted by a magnet) is put close to a cylinder with
the auto switch or an actuator, the magnetic force inside the cylinder or actuator loses, causing the auto
switch to malfunction.
8. Please contact SMC concerning water resistance, elasticity of lead wires, usage at welding
sites, etc.
9. Do not use in direct sunlight.
10. Do not mount the product in locations where it is exposed to radiant heat.
11. Take appropriate measures against the lightning surge on the equipment side as the auto
switches do not have any lightning surge resistance specified in the CE marking.
Maintenance
1. Removal of equipment, and supply/exhaust of compressed air.
Before any machinery or equipment is removed, first ensure that the appropriate measures are in place
to prevent the fall or erratic movement of driven objects and equipment, then cut off the electric power
and reduce the pressure in the system to zero. Only then should you proceed with the removal of any
machinery and equipment.
When machinery is restarted, proceed with caution after confirming that appropriate measures are in
place to prevent rotary tables from moving suddenly.
2. Do not touch a terminal during energizing.
Touching a terminal during energizing may cause electric shock, malfunction, or auto switch breakage.
-16-
Warning
2020-10-13 10:38
DI987004
