Precautions For Safe Use - Omron H5CX-N Datasheet

Safety Precautions for All H5CX Series (Common)
CAUTION
Do not allow pieces of metal, wire clippings, or fine
metallic shavings or fillings from installation to enter
the product. Doing so may occasionally result in
electric shock, fire, or malfunction.
Minor injury due to explosion may occasionally occur.
Do not use the Timer where subject to flammable or
explosive gas.
Fire may occasionally occur. Tighten the terminal
screws to the rated torque.
H5CX terminals: 6.55 to 7.97 lb-in (0.74 to 0.90 N m)
P2CF Socket terminals: 4.4 lb-in (0.5 N m)
Minor injury due to electric shock may occasionally
occur. Do not touch any of the terminals while power
is being supplied. Be sure to mount the terminal cover
after wiring.
The life expectancy of the output relay varies
considerably according to its usage. Use the output
relay within its rated load and electrical life
expectancy. If the output relay is used beyond its life
expectancy, its contacts may become fused or there may be a
risk of fire. Also, be sure that the load current does not exceed
the rated load current and when using a heater, be sure to use a
thermal switch in the load circuit.
Minor electric shock, fire, or malfunction may
occasionally occur. Do not disassemble, modify, or
repair the Timer or touch internal components.

Precautions for Safe Use

• The panel surface of the H5CX is water-resistant (conforming to
NEMA4, IP66, UL Type 4X (Indoor Use Only). To protect the
internal circuits from water penetration through the space between
the H5CX and operating panel, waterproof packing is included.
Attach the Y92F-30 Adapter with sufficient pressure with the
reinforcing screws so that water does not penetrate the panel.
0.5 to 1 mm
• When mounting the Timer to a panel, tighten the two mounting
screws alternately, a little at a time, so as to keep them at an equal
tightness. If the panel screws are tightened unequally, water may
enter the panel.
• Store the Timer at the specified temperature. If the Time has been
stored at a temperature of less than -10°C, allow the Time to stand
at room temperature for at least 3 hours before use.
• Mounting the Timer side-by-side may reduce the life expectancies
of internal components.
• Use the Timer within the specified ranges for the ambient operating
temperature and humidity.
• Do not use in the following locations:
• Locations subject to sudden or extreme changes in
temperature.
• Locations where high humidity may result in condensation.
• Do not use the Timer outside of the rated ranges for vibration,
shock, water exposure, and oil exposure.
• Do not use this Timer in dusty environments, in locations where
corrosive gasses are present, or in locations subject to direct
sunlight.
• Install the Timer well away from any sources of static electricity,
such as pipes transporting molding materials, powders, or liquids.
•
•
It is recommended that the
space between the screw
head and the Adapter be 0.5
to 1 mm.
• Internal elements may be destroyed if a voltage outside the rated
voltage range is applied.
• Be sure that polarity is correct when wiring the terminals.
• Separate the Timer from sources of noise, such as devices with
input signals from power lines carrying noise, and wiring for I/O
signals.
• Do not connect more than two crimp terminals to the same
terminal.
• Up to two wires of the same size and type can be inserted into a
single terminals.
• Use the specified wires for wiring. Applicable Wires: AWG 18 to
AWG 22, solid or twisted, copper.
• Install a switch or circuit breaker that allows the operator to
immediately turn OFF the power, and label it to clearly indicate its
function.
• When the Timer is operated with no-voltage input (NPN input),
approximately 14 V is output from the input terminals. Use a sensor
that contains a diode.
Sensor
0V
• Use a switch, relay, or other contact so that the rated power supply
voltage will be reached within 0.1 seconds. If the power supply
voltage is not reached quickly enough, the Timer may malfunction
or outputs may be unstable.
• Use a switch, relay, or other contact to turn the power supply OFF
instantaneously. Outputs may malfunction and memory errors may
occur if the power supply voltage is decreased gradually.
• H5CX-A@-N/-L@-N:
When changing the set value during a timing operation, the output
will turn ON if the set value is changed as follows because of the
use of a constant read-in system:
Elapsed time (UP) mode: Present value
Remaining time (DOWN) mode: Elapsed time
present value is set to 0.)
When in the remaining time mode, the amount the set value is
changed is added to or subtracted from the present value.
Operation with a set value of 0 will vary with the output mode. Refer
to the timing charts on page 20.
• H5CX-B@-N:
When changing the set value during a timing operation, the output
will turn ON if the set value is changed as follows because of the
use of a constant read-in system:
1. Forecast Value Setting
≥
When the present value the set value, OUT2 (control output)
turns ON.
≥
When the present value the forecast value (forecast value =
set value - forecast set value), OUT1 (forecast output) turns ON.
2. Absolute Value Setting
≥
When the present value set value 2, OUT2 (control output 2)
turns ON.
≥
When the present value the forecast value (forecast value =
set value - forecast set value), OUT1 (control output 1) turns
ON.
When the set value is 0, the output turns ON the moment the
signal is input. The reset operation turns OFF the output.
• Do not use organic solvents (such as paint thinners or benzine),
strong alkali, or strong acids. They will damage the external finish.
• Confirm that indications are working normally, including the
backlight LED, and LCD. The indicator LEDs, LCD, and resin parts
may deteriorate more quickly depending on the application
environment, preventing normal indications. Periodic inspection
and replacement are required.
• The waterproof packing may deteriorate, shrink, or harden
depending on the application environment. Periodic inspection and
replacement are required.
H5CX-@-N
Diode
Input
≥
Set value
≥
Set value (The
41