E1
CP-UM-3138E
Enclosed Limit Switches
User’s Manual
For your safe and correct use of this product, please read this manual and a specification sheet carefully, and use it
correctly within the specification.
Please read the “Terms and Conditions” from the following URL before ordering or use:
https://www.azbil.com/products/factory/order.html
WARNING
Be sure to turn the power supply of the equipment OFF before wiring the limit switch. Failure to do so
might result in electrical shock depending on power supply voltage or involved in unsafe condition such
as unintentional machine start.
CAUTION
Take sufficient safety measures such as the provision of an interlock circuit in the control circuit to pre-
vent mechanical damage or injury in the event that the limit switch malfunctions.
If the cover or the outer housing of the limit switch becomes depressed or cracked, replace the limit
switch immediately. Failure to do so might result in loss of seal performance or operating characteristics.
Firmly tighten the cover and conduit. Insufficient tightening not only impairs the sealing performance
and insulation, but also switching performance.
Never use or leave the limit switch unattended with the cover or conduit open.
Doing so might allow ingress of water or dust, resulting in defective operation.
Do not apply excessive force to the actuator beyond the operating limits.
Doing so might damage the switch.
Do not use the limit switch in a place with direct exposure to chemicals (organic solvents, acids, alkalis,
etc.).
Do not swing the limit switch around by the cable. Also, do not pull on the cable with excessive force.
When disposing of the limit switch, please do so appropriately, in compliance with local ordinances for
industrial waste.
Wiring
CAUTION
Wire the limit switch using crimp terminals with insulation sleeve so as not to contact the cover and
housing. If the crimped terminals contact the cover, the cover sometimes can no longer be attached, or a
short-circuit might result.
When assemble the cover with indicator, pay special attention not to bend the contact springs exces-
sively. Otherwise, this may result in short-circuit or ground fault.
Tighten the compression nut so that the cable sheath protrude 2 to 3 mm from the edge of connector or
inner surface of housing as shown bellow.
2 to 3 mm
