Z-01H2M-B
| Model | Z-01H2M-B |
| Description | Snap Acting/Limit Switch, |
| PDF file | Total 28 pages (File size: 7M) |
| Chip Manufacturer | OMRON |
Z
Safety Precautions
Refer to
Safety Precautions for All Basic Switches.
Precautions for Safe Use
Terminal Connection
When soldering lead wires to the Switch, make sure that the capacity
of the soldering iron is 60 W maximum. Do not take more than 5 s to
solder any part of the Switch. The characteristics of the Switch will
deteriorate if a soldering iron with a capacity of more than 60 W is
applied to any part of the Switch for 5 s or more.
Incorrect
Correct
Separate the
installation lo-
cation from
heat sources.
Operation
•
Make sure that the switching frequency or speed is within the
specified range.
1.If the switching speed is extremely slow, the contact may not be
switched smoothly, which may result in a contact failure or
contact welding.
2.If the switching speed is extremely fast, switching shock may
damage the Switch soon. If the switching frequency is too high,
the contact may not catch up with the speed.
The rated permissible switching speed and frequency indicate the
switching reliability of the Switch.
The life of a Switch is determined at the specified switching speed.
The life varies with the switching speed and frequency even when
they are within the permissible ranges. In order to determine the
life of a Switch model to be applied to a particular use, it is best to
conduct an appropriate durability test on some samples of the
model under actual conditions.
•
Make sure that the actuator travel does not exceed the permissible OT
position. The operating stroke must be set to 70% to 100% of the rated OT.
•
Mount a cover if the switch is to be installed in a location where
worker inattention could result in incorrect operation or accidents.
Incorrect
Correct
(preventing malfunctions)
Precautions for Correct Use
Mounting Location
•
Do not use the switch alone in atmospheres such as flammable or
explosive gases. Arcing and heat generation associated with
switching may cause fires or explosions.
•
Switches are generally not constructed with resistance against water. Use
a protective cover to prevent direct spraying if the switch is used in
locations subject to splashing or spurting oil or water, dust adhering.
Incorrect
Correct
•
Subjecting the switch to continuous vibration or shock may result in
contact failure or faulty operation due to abrasion powder and in
reduced durability. Excessive vibration or shock will cause the
contacts to operate malfunction or become damaged. Mount the
switch in a location that is not subject to vibration or shock and in a
direction that does not subject the switch to resonance.
•
If silver contacts are used with relatively low frequency for a long
time or are used with microloads, the sulfide coating produced on
the contact surface will not be broken down and contact faults will
result. Use a microload switch that uses gold contacts.
•
Do not use the switch in atmospheres with high humidity or heat or
in harmful gases, such as sulfide gas (H
2
S, SO
2
), ammonia gas
(NH
3
), nitric acid gas (HNO
3
), or chlorine gas (Cl
2
). Doing so may
impair functionality, such as with damage due to contacting faults
or corrosion.
•
The switch includes contacts. If the switch is used in an atmosphere
with silicon gas, arc energy may cause silicon oxide (SiO
2
) to
accumulate on the contacts and result in contact failure. If there is
silicon oil, silicon filling, silicon wiring, or other silicon products in the
vicinity of the switch, use a contact protection circuit to limit arcing
and remove the source of the silicon gas.
Mounting
Always make sure that the power is turned OFF before mounting,
removing, or wiring the Switch, or performing maintenance.
Electric shock or burning may occur.
Selecting Models
Terminal box
Terminal box
We recommend using Drip-proof Models (protection equivalent to
IP62) in locations subject to floating dirt and dust. Other models do not
have a protective structure.
•
Install the switch in a location that is not directly subject to debris
and dust from cutting. The actuator and the switch body must be
protected from accumulated cutting debris and dirt.
Incorrect
Correct
Wiring
•
Use wire sizes that are suitable to the applied voltage and carried
current.
•
If you use a soldering iron to solder the wires, do not allow the tip of
the soldering iron to exceed 380°C. If a Switch is used with
insufficient soldering, abnormal heat and burning may occur.
•
Solder for no more than 5 s at 350°C and for no more than 3 s at
380°C. If heat is applied for too long, the case may melt, the lead
wire coverings may be scorched, and other characteristics of the
Switch may deteriorate.
•
Do not use the switch in locations subject to hot water (greater than
60°C) or in water vapor.
•
Do not use the switch outside the specified temperature and
atmospheric conditions.
The permissible ambient temperature depends on the model. (Refer to
the specifications in this catalog.) Sudden thermal changes may cause
thermal shock to distort the switch and result in faults.
Tightening
The suitable tightening torque for screw terminals is given below.
Screw terminals except for those on Split-contact Models (Z-10FY-
B): 0.78 to 1.18 N·m
Screw terminals on Split-contact Models (Z-10FY-B):
0.49 to 1.18 N·m
Operation
•
Make sure that the switching speed and frequency are is within the
specified ranges.
1. If the switching speed is extremely slow, the contacts may not be switched
smoothly, which may result in a contact failure or contact welding.
26
