Z-15HW78-B7 Datasheet, PDF (17/18 Pages) Omron Electronics LLC – Basic Switch

Z
Z
s CABLE OUTLET DIMENSIONS
A-A section
B-B section
Note: The cable outlet is provided with two stepped openings (6 dia. and 8 dia.) to permit the use of either opening according to the
finished OD of the cable to be connected.
s APPROVALS
UL (File No. E41515)/CSA (File No. LR21642)/SEV (File No. S20/163)
Type
Z-15 Series
Rating
15 A 125, 250 or 480 VAC
1/2 A 125 VDC, 1/4 A 250 VDC
1/8 HP 125 VAC, 1/4 A 250 VAC
Note: The rated values approved by each of the safety standards (e.g. UL/CSA) may be different from the performance characteristics
individually defined in this catalog.
Precautions
s MOUNTING
Use M4 mounting screws with plain washers or spring washers
to mount the switch. Tighten the screws at a torque of 12 to 15
kg-cm.
Solder the lead to the terminal by applying a soldering iron
rated at 60 W max. quickly (within 5 seconds). Note that
applying a soldering iron for too long a time or using one that is
rated at more than 60 W may degrade the switch
characteristics.
Panel mount type (Z-15sQ)
When mounting a panel mount type switch (the one having a
suffix “-Q” in its model number) to a panel, tighten the hexagon
nut of the actuator at a torque of 50 kg-cm or less.
When mounting a panel mount type switch on its side, remove
the hexagon nut from the actuator and carefully adjust the dog
angle and operating speed because too large a dog angle or
too high an operating speed may damage the switch. Especially
be careful not to apply an impulsive force to the actuator when
operating it. By the same token, too high an operating speed
and too long an overtravel may damage a panel mount switch
with a roller pin plunger.
Do not use mounting holes of the switch body when mounting
on panel with M12 mounting nut.
s OPERATION
High sensitivity switch (Z-15H)
When using the switch in a DC circuit, be sure to provide an arc
suppressor 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 current of the relay
coil is the load of the switch.)
Do not apply a force of 2 kg or higher to the pin plunger.
Exercise care that the environment conditions such as
temperature and humidity do not change abruptly.
Drip-proof type (Z-s55)
The switch is not perfectly oil-tight; so, do not dip it in oil or
water.
Depending on the environments, the materials of the rubber
boots must be selected. Oil-tight, cold-resistive, and heat-
resistive rubbers are available from OMRON.
Flexible rod type (Z-15sNJs55) (drip-proof type)
When the rod is fully swung, the switch may operate when the
lever returns, causing chattering. Use a circuit that
compensates for chattering wherever possible.
Do not switch the rod to the fullest extent when the switch is to
break a power circuit because such a practice may cause metal
deposition to occur between the mating contacts of the switch.
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