General-purpose Basic Switch Z F-187
Limit
Switches
Precautions
Refer to the Technical Information for Basic Switches (Cat. No. C122) for common precautions.
■ Correct Use
Mounting
Use M4 screws with plane washers and spring washers to mount the
Switch. Tighten each mounting screw securely to a torque of 1.18 to
1.47 N·m {12 to 15 kgf·cm}.
Basic Models (General-purpose) & Split-contact Models
Basic Models (Drip-proof) without Terminal Protective Cover
Panel Mount Switch (Z-15@Q@, Z-01@Q@)
When mounting the panel mount plunger model with screws on a
side surface, be careful of the dog angle and operation speed.
Excessive dog angle or operation speed may damage the Switch.
The Switch can be panel mounted, provided that the hexagonal nut
of the actuator is tightened to a torque of 2.94 to 4.9 N·m {30 to
50 kgf·cm}.
When using the panel mount plunger model mounted with screws on
a side surface, be careful not to apply a large shock. Applying a
shock exceeding 100G may damage the Switch.
When using the panel mount plunger model mounted with screws on
a side surface, remove the hexagonal nuts from the actuator.
High-sensitivity Switch (Z-15H)
When using the Switch in a DC circuit, be sure to provide an arc sup-
pressor as well because the small contact gap of the Switch may
result in contact troubles.
In an application where a high repeat accuracy is required, limit the
current that flows through the Switch to within 0.1 A. Also, use a relay
to control a high-capacity load if the Switch is connected to such a
load. (In this case, the exciting current of the relay coil is the load of
the Switch.)
Do not apply a force of 19.6 N {2 kgf} or higher to the pin plunger.
Exercise care that the environment conditions such as temperature
and humidity do not change abruptly.
Models with Drip-proof Terminal Cover
(Z-@A55-B5V)
Wiring
To attach the Protective Cover to the case, hold the cover in almost
parallel to the case and then push it to the case. If the cover is
pushed diagonally, the rubber packing may slip off, degrading the
sealability of the Switch.
Use round solderless terminals having the following dimensions to
connect leads to the terminals. Tighten the screws of terminals to a
torque of 0.78 to 1.18 N·m {8 to 12 kgf·cm}.
Use the terminal shown below.
25.4±0.1
Panel Mount Plunger Panel Mount Roller Plunger
12.5
+0.2
dia.
0
Two, 4.2 dia. mount-
ing holes or M4
12.5
+0.2
dia.
0
25.4±0.1
Panel Mount Plunger Panel Mount Roller Plunger
12.5
+0.2
dia.
0
Two, 4.2 dia. mount-
ing holes or M4
12.5
+0.2
dia.
0
Rubber packing
Incorrect
Correct
Terminal with
toothed washer
8
20 max.
4.3 dia.
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