H7CX-
@
-N
52
Safety Precautions for All H7CX Series (Common)
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 Counter where subject to flammable or
explosive gas.
Fire may occasionally occur. Tighten the terminal
screws to the rated torque.
H7CX 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 Counter or touch internal components.
• The panel surface of the H7CX-A/-R 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 H7CX 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.
• When mounting the Counter 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 Counter at the specified temperature. If the Counter has
been stored at a temperature of less than
−
10
°
C, allow the Counter to stand at room temperature for at least
3 hours before use.
• Mounting the Counter side-by-side may reduce the life
expectancies of internal components.
• Use the Counter 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 Counter outside of the rated ranges for vibration,
shock, water exposure, and oil exposure.
• Do not use this Counter in dusty environments, in locations where
corrosive gasses are present, or in locations subject to direct
sunlight.
• Install the Counter well away from any sources of static electricity,
such as pipes transporting molding materials, powders, or liquids.
• 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 Counter 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 Counter is operated with no-voltage input (NPN input),
approximately 14 V is output from the input terminals. Use a sensor
that contains a diode.
• 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 Counter 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.
• When changing the set value during operation, because the H7CX
uses a constant read-in system, output will turn ON if the set value
is equal to the present value.
• When changing the comparison value during operation, because
the H7CX uses a constant read-in system, the output status will
change if the comparison value is changed to a value on the other
side of the present value. (when using as a tachometer)
• If the set value and present value are both 0, the output will turn
ON for the default setting. The output will turn OFF during a reset
operation. (when using as a counter)
• When the power is turned ON using the factory settings, the output
will turn ON after 999.9 s if no pulses are received as count input.
• 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.
CAUTION
Precautions for Safe Use
0.5 to 1 mm
It is recommended that the
space between the screw
head and the Adapter be
0.5 to 1 mm.
Input
0 V
Sensor
Diode
Summary of Contents for H7CX- -N Series
Page 54: ...54 MEMO ...
