Safety Precautions - Omron H2C Manual

Safety Precautions

!CAUTION
This may occasionally cause electric shock, fire, or malfunction.
Never disassemble, repair, or modify the H2C.
This may occasionally cause electric shock, fire, or malfunction.
Do not allow metal fragments or lead wire scraps to fall inside the
H2C.
■ Precautions for Safe Use
Observe the following items to ensure the safe use of this product.
Environmental Precautions
• Store the H2C within the specified ratings. If the H2C has been
stored at temperatures –10 ° C or lower, let it stand for 3 hours or
longer at room temperature before turning ON the power supply.
• Use the H2C within the specified ratings for operating temperature
and humidity.
• Do not operate the H2C in locations subject to sudden or extreme
changes in temperature, or locations where high humidity may
result in condensation.
• Do not use the H2C in locations subject to vibrations or shock.
Extended use in such locations may result in damage due to stress.
• Do not use the H2C in locations subject to excessive dust,
corrosive gas, or direct sunlight.
• Install the H2C well away from any sources of static electricity, such
as pipes transporting molding materials, powders, or liquids.
• The H2C is not waterproof or oil resistant.
Do not use it in locations subject to water or oil.
• The life expectancy of internal components may be reduced if the
H2C is mounted side-by-side.
• Do not use organic solvents (such as paint thinner or benzine),
strong alkaline, or strong acids because they will damage the
external finish.
Usage Precautions
• Install a switch or circuit breaker that allows the operator to
immediately turn OFF the power, and label it to clearly indicate its
function.
• Be sure to wire the terminals correctly.
• Do not install input lines in the same duct or conduit as power
supply or other high-voltage lines. Doing so may result in
malfunction due to noise. Separate the input lines from high-
voltage lines.
• Internal elements may be destroyed if a voltage outside the rated
voltage is applied.
• Maintain voltage fluctuations in the power supply within the
specified range.
• Use a switch, relay, or other contact so that the rated power supply
voltage will be reached within 0.1 s. If the power supply voltage is
not reached quickly enough, the H2C may malfunction or outputs
may be unstable.
• Leaving the H2C with outputs ON at a high temperature for a long
time may hasten the degradation of internal parts (such as
electrolytic capacitors). Therefore, use the H2C in combination with
relays and avoid leaving the H2C for more than 1 month with an
output turned ON.
X /b T/a
2
T X
1
H2C
10
Motor Timer
X /a X /a
1 1
Auxiliary relay
X
X
2
(e.g., MY Relay)
■ Precautions for Correct Use
How to Change the Time Range
Change the time range by turning the knob clockwise using a flat-
blade screwdriver or an Allen wrench. There are five possible
settings. The selected time is displayed in the time range display
window above the knob.
Do not change the time range while the timer is in operation.
How to Select Power Frequency
Before using the timer, set the frequency selector located at the rear
panel to the proper power frequency (50 to 60 Hz).
How to Mount the Timer on Mounting
Track
Mounting
First hook portion A of the timer to the mounting track, then press the
timer in direction B.
Dismounting
Pull out portion C with a round-blade screwdriver and remove the
timer from the mounting track.
A
B
Electrical Set
The motor and clutch do not need to be reset simultaneously.
Use the voltage applied to the clutch for resetting with the H2C-@R.
Do not allow power to be continuously applied to the motor and
clutch for extended periods of time.
Time range
display window
Hex. hole for
Groove for flat-
Allen wrench
blade screwdriver
50 Hz
60 Hz
C