H7AN2DAC100240 Omron, H7AN2DAC100240 Datasheet - Page 17

• Manufacturer Part Number: H7AN2DAC100240
• Description: COUNTER DIGITAL LED
• Manufacturer: Omron

Specifications of H7AN2DAC100240

• Rohs Compliant: YES
• Digit Height: 72mm
• Supply Voltage Range: 100VAC To 240VAC
• Counting Speed: 30Hz
• Operating Temperature Range: -10°C To +55°C
• No. Of Digits / Alpha: 2

Safety Precautions
Refer to Safety Precautions for All Counters.
Minor injury due to electric shock may occasionally
occur. Do not touch any of the terminals while power
is being supplied.
Minor injury due to electric shock may occasionally
occur. Do not touch the terminals for at least 1 minute
after turning OFF the power supply.
Minor injury due to explosion may occasionally occur.
Do not use the H7AN where subject to flammable or
explosive gas.
Minor electric shock, fire, or malfunction may
occasionally occur. Never attempt to disassemble,
modify, or repair the H7AN or touch any of the internal
parts.
If the output relay is used beyond its life expectancy,
its contacts may become fused or there may be a risk
of fire.
Use the output relay within its rated load and
electrical life expectancy. The life expectancy of the output relay
varies considerably according to its usage.
Fire may occasionally occur. Tighten the terminal
screws to a torque of 0.74 to 0.90 N·m.
Do not allow metal fragments, lead wire scraps, or
chips from processing during installation to fall
inside the H7AN. Otherwise, minor electric shock, fire
or malfunction may occasionally occur.
■ Precautions for Safe Use
• The H7AN is not waterproof or oil resistant. Do not use it in
• The load current must be within the rated current.
• Pay careful attention to polarity to avoid wrong connections when
• Do not apply directly apply an external voltage to either the
• When using heaters, be sure to use a thermal switch for the load
locations subject to water or oil.
wiring the counter input terminals and reset input terminal.
transistor output terminals or external power supply terminals.
circuit.
Polarity not
reversible
30 VDC max.
External
power
supply
V
CP1
CP2
Reset
!CAUTION
12
13
14
8
or
H7AN
11
10
9
8
or
or
• Use a switch, relay, or other contact device so that the power is
• Use the specified wires for wiring.
• Do not connect more than two crimp terminals to the same
• Do not connect anything to unused terminals.
• Leaving the H7AN with outputs ON at a high temperature for a long
• The set value of the Preset Counter can be changed at any time
• When removing the Counter body from the case, never touch the
• Static electricity may destroy internal components. When removing
• When changing the set value during operation, do not leave a
■ Precautions for Correct Use
• Inrush current of approximately 23 A will flow for a short period of
• After turning ON the power supply, 50 ms is required for the internal
• After turning OFF the power supply, 50 ms is required for voltage in
• Operation after the power supply is interrupted with be as shown
Note: Use a model with a backup function (models ending in “-M”) to
turned ON or OFF quickly. If the power supply voltage is not
reached quickly enough, the H7AN may malfunction.
terminal.
time may hasten the degradation of internal parts (such as
electrolytic capacitors). Therefore, use the product in combination
with relays and avoid leaving the product with the output turned ON
for a long period of time (e.g., a month or more).
during operation and the new set value will be used immediately.
The output will turn ON whenever the set value equals the current
count, so change the set value with care. (If a setting switch is
accidentally touched during operation, the set value will be
changed and the new set value will be used for operation. Always
leave the front panel cover closed unless you are changing a
setting.)
terminals or electronic components with your hands or subject
them to shock. When inserting the body, do not allow electronic
components to come in contact with the case.
the Counter body from the case, do not touch an electronic
components other than the setting switches with your hands.
switch set so that two numbers are visible at the same time. The set
value will not be accurate. Push the buttons on the thumbwheel
switches firmly.
time when the power supply is turned ON. If the capacity of the
power supply is insufficient, the H7AN may not start. Use a power
supply, breakers, an contacts with sufficient capacity.
circuits to reach the operating voltage. Operation for input signals
may not be correctly during this time.
the internal circuits to drop. Operation may be performed for input
signals during this time.
below for models without data backup and for models that back up
data for power interruptions (models with model numbers ending in
“-M”).
0.5 s or more
0.01 s or less
More than 0.01 and less than 0.5 s The counter may reset or continue operating.
Applicable Wires:
AWG24 to AWG18 (cross-sectional area of 0.205 to 0.823 mm
Power
maintain the settings even for power interruptions. Be sure to
enable the backup function.
Reception of
input signal
Power
ON
OFF
OFF
ON
50 ms
Momentary
power interruption
All reset
The counter continues normal operation
same as before the power failure.
Unstable operation
Possible
Operation after
power interruption
50 m
H7AN
2
)
17