H7E
@-N@P
29
Precautions (Common)
Refer to
Safety Precautions for All Counters
.
■
New H7E (Except for PCB-mounting Counter)
!
WARNING
This product has a built-in lithium battery. Do not short-circuit the +
and
−
terminals, charge, disassemble, deform, or expose the battery
to fire. The battery may explode (break), catch fire, or cause liquid
leakage.
Do not use any battery other than the specified one (Y92S-36). Using
another battery may cause liquid leakage or breakage, resulting in
malfunction or injury.
!
CAUTION
If a voltage other than the rated one is applied, internal elements may
be damaged.
Do not use the Counter in the following places:
•
Locations subject to direct sunlight.
•
Locations subject to corrosive gases.
•
Locations subject to dust.
Before Use
Be sure to remove this sheet before attempting to use the product.
•
An insulation sheet has been inserted to maintain the quality of the
Totalizer in the event of a long period without use. Be sure to
remove this sheet before attempting to use the product.
Remove the insulation sheet and press the Reset Key on the front
panel of the Counter. (With the H7ER-N,-NV(-H),-NV1(-H), models,
“0” or “0.0” will be displayed after 1 s.)
•
Switch settings on the Counter must be performed before mounting
it to a control panel.
•
Do not use the Counter in the following locations:
•
Locations subject to severe changes in temperature.
•
Locations subject to condensation as the result of high humidity.
Mounting Precautions for Flush
Mounting
Although the operating section is watertight (conforming to NEMA4,
IP66), rubber packing is provided to avoid water leakage through the
gap between the Counter and panel cutout. Unless this rubber pack-
ing is tightly squeezed on, water may permeate inside the panel.
Therefore, be sure to tighten the screws for fixing the Y92F-34 Flush
Mounting Bracket. (Excessive tightening may also deform the rubber
packing.)
Screw for the Flush Mounting Bracket
Reset Input and Count/Timer Input
•
The H7E operates using its built-in Battery. If the H7E is connected
to a device that has +V and OUT terminals that are connected with
a diode as shown in the circuit diagram, the circuit indicated by the
arrow 1 or 2 will be formed when the device is turned OFF. As a
result, the H7E may be reset or count by one. It is recommended
that such devices not be connected to the H7E.
•
If an excessive voltage is applied to the count/timer input or reset
input terminals, the internal elements may be damaged.
Ensure that the following voltages are not exceeded:
•
PNP/NPN universal voltage input model: 30 VDC
•
AC/DC voltage input model:
At count/timer input: 240 VAC (peak voltage: 338V)
240 VDC
At reset input:
No voltage can be applied. (No-voltage
input)
•
No-voltage input model: No voltage can be applied.
•
Avoid wiring close to high-tension or large-current lines.
•
Do not remove the outer case when voltage is being applied to the
power supply terminals or the input terminals.
•
The input for the H7E
@
-NFV-
@
is a high-impedance circuit and so
influence from an induced voltage may result in malfunction. There-
fore, when the input signal wiring is longer than 10 m (line capaci-
tance of 120 pF/m, at room temperature), it is recommended that a
CR filter or a bleeder resistor is connected.
Reset Key
Insulation Sheet
Y92F-34 Adapter
Panel
The wider side must
face the panel.
H7E
@
-N
Devices
Inter
nal
circuit
Count/Timer
input or reset
input
