Safety Precautions for All Timers
Refer to the
Safety Precautions
for individual Timers for precautions specific to each Timer.
!
WARNING
!
CAUTION
■
Precautions for Safe Use
Operating Environment
•
Use the Timer within the ratings specified for ambient operating
temperature and ambient operating humidity for each model.
•
Store the Timer with the specified temperature range for each
model. If the Timer has been stored at a temperature of less than
−
10
°
C, allow the Timer to stand at room temperature for at least 3
hours before using it.
•
Use the Timer within the performance specified for water and oil
exposure for each model.
•
Do not use the Timer in locations subject to shock and vibration.
Long-term usage in such locations may damage the Timer due to
stress.
Magnetic contactors generate a shock of 1,000 to 2,000 m/s
2
when
switching a load. When mounting to DIN Track, separate magnetic
contactors from the Timer so that the Timer is not subjected to
vibration and shock. Use anti-vibration rubber.
•
Do not use the Timer in locations subject to excessive dust,
corrosive gases, or direct sunlight.
•
Do not use organic solvents (such as paint thinner or benzine),
strong alkalis, or strong acids because they will damage the
external finish of the Timer.
•
Separate the input devices, input wiring, and Timer as far as
possible from sources of noise and power lines carrying noise.
•
When using the Timer in environments subject to large amounts of
static electricity (e.g., pipes carrying molding materials, powders, or
fluid materials), separate the Timer as far as possible from the
sources of static electricity.
•
Do not remove the external case from the Timer.
•
Do not use the Timer in locations where condensation may occur
due to high humidity or sudden temperature changes.
Condensation inside the Timer may result in malfunction or
damage to Timer elements.
•
The life of internal parts may be reduced if Timers are mounted in
close proximity to each other.
•
Resin and rubber parts (e.g., rubber packing) may deteriorate,
shrink, or harden depending on the operating environment (e.g.,
subjected to corrosive gases, ultraviolet light, or high
temperatures). We recommend periodic inspection and
replacement.
•
Normal operation may not be possible in locations subject to
sulfidizing gas, such as in sewer systems or waste incinerators.
OMRON does not market any Timers or other control devices for
operation in atmospheres containing sulfidizing gas. Seal the Timer
so that sulfidizing gas will not enter it. If sealing is not possible,
OMRON does provide special Timers with improved resistance to
sulfidizing gas. Ask your OMRON representative for details.
Power Supply
•
Be sure that the voltage applied is within the specified range,
otherwise the internal elements of the Timer may be damaged.
•
Install a switch or circuit breaker that allows the operator to
immediately turn OFF the power, and label it to clearly indicate its
function.
•
Maintain voltage fluctuations
in the power supply within
the specified range.
•
Use a commercial power supply for the power supply voltage input
to models with AC inputs.
Inverters with an output frequency of 50/60 Hz are available, but
the rise in the internal temperature of the Timer may result in
ignition or burning. Do not use an inverter output for the power
supply of the Timer.
•
The Timers listed below cannot be directly turned ON and OFF by
using an AC 2-wire proximity sensor to turn the Timer's power
supply ON and OFF.
Use the following countermeasure when using an AC 2-wire
proximity sensor with the Timer. (The power supply circuit in the
Timer uses half-wave rectification. Only a half AC wave is supplied
to the proximity sensor, which may cause operation to be unstable.)
Applicable Models
H3Y, H3YN, H3RN, H3CA-8, RD2P, and H3CR(-A, -A8, -AP, -F, and
-G)
Countermeasure
Wire through a relay and use the relay contacts to turn the power
supply ON and OFF.
Confirm the stability of operation after making the connections.
•
Install protective measures (such as earth leakage breakers, wiring
breakers, or fuses) on the power supply side according to any
applicable laws or regulations.
The following Timers contain lithium batteries that are
not explosion proof.
1.
Timers with Built-in Batteries: H5L
The Timer contains a lithium battery, which may occasionally
ignite or rupture. Do not disassemble, deform under pressure,
heat to 100
°
C or higher, or incinerate the Timer.
2.
Timers with Replaceable Batteries: Y92S-20 (for H5CN-M)
The battery may occasionally rupture, ignite, or leak fluid. Do
not short the positive and negative terminals. Do not charge,
disassemble, deform under pressure, or throw the battery into a
fire. If a non-specified battery is used, the battery may leak fluid
or rupture, occasionally resulting in equipment failure or minor
injury. Use only the specified battery.
The following Timers contain lithium batteries that are
explosion proof.
Timers with Built-in Batteries: H5BR, H5AN-4DM, H5S, H5F, and
H4KV
The Timer contains a lithium battery, which may occasionally
ignite or rupture. Do not disassemble, deform under pressure,
heat to 100
°
C or higher, or incinerate the Timer.
Allowable
Voltage Range
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