H8BM
H8BM
13
Precautions
Power Supply
• The power supply and input circuits are electrically insulated
inside
the Counter
.
• When turning the power on and off, input signal reception is
sometimes not possible as shown in the diagram below. The
unstable
period
will vary with power supply voltage and the load
conditions
on external power supplies.
250
ms
ON
24 V
14 V
Impossible
Input signal
reception
Power supply
OFF
0 V
0 to 50 ms
Count
Unstable
12 V
10 ms to 0.9 s
Impossible
Unstable
• Turn on or off the operating power source all at once by using
switch
or relay contact.
Operating Environment
• The front panel of the Counter is dust-proof and oil-proof.
However,
if the Counter is exposed to a large quantity of water or
oil
for a long time, the internal components may be af
fected.
• When
using
the Counter in a location where excessive noise is
generated
keep the
Counter
, input devices, and input wiring as
far
away as possible from the noise source and power lines.
Use
of
shielded cable as input signal lines is recommended.
• Organic
solvents (such as paint thinner), as well as strong acids
or
strong alkalies can damage the housing of the Counter
.
Others
• To
conduct a dielectric strength test between the electric circuits
and
non-current-carrying metal parts with the Counter installed
in the control panel, either disconnect the Counter from the
circuit,
or short-circuit all the terminals of the Counter (this is to
prevent the test voltage from sneaking into the Counter and
prevent
the internal circuitry of the Counter from being damaged
in case the insulation of some device in the control panel
ruptures.
• The terminal screw is M3 x 5. Use the solderless terminal as
shown
in the following illustration.
Caution
This product contains a lithium battery. Lithium batteries ex-
plode
if incinerated. Dispose of the Counter as a
non-combus
-
tible
item.
!
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To
convert millimeters into inches, multiply by 0.03937. T
o convert grams into ounces, multiply by 0.03527.
Cat. No. M042-E1-1D
OMRON Corporation
Industrial
Automation Company
Measuring and Supervisory Controls Department
Shiokoji Horikawa, Shimogyo-ku,
Kyoto, 600-8530 Japan
Tel: (81)75-344-7108/Fax: (81)75-344-7189
In the interest of product improvement, specifications are subject to change without notice.
Printed
in Japan
0101-0.5C (0499)
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