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E2EM
Leakage Current
When the Proximity Sensor is OFF, the Proximity Sensor has leak-
age current. In this case, the load is imposed with a small voltage
and the load may not be reset. Before using the Proximity Sensor,
make sure that this voltage is less than the load reset voltage.
Countermeasures Against Leakage Current
Connect a bleeder resistor as the bypass for the leakage current so
that the current flowing into the load will be less than the load reset
current.
Refer to the following to calculate the bleeder resistance and the al-
lowable power of the bleeder resistor.
R x V
/(i
– i
) (kΩ)
S
R
OFF
2
P > V
/R (mW)
S
P: The allowable power of the bleeder resistor. (The actual power
capacity of the bleeder resistor must be at least a few times
larger than the allowable power of the bleeder resistor.)
i
: Leakage current of the Proximity Sensor (mA)
R
i
: Load reset current (mA)
OFF
It is recommended that 15 kΩ max./450 mW min. for 12 VDC and
30 kΩ max./0.1 W min. for 24 VDC be used.
24
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. D090-E1-1
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
Industrial Sensors Division
Sensing Devices and Components Division H.Q.
28th Fl., Crystal Tower Bldg.,
1-2-27, Shiromi, Chuo-ku,
Osaka 540-6028 Japan
Phone: (81)6-6949-6012 Fax: (81)6-6949-6021
12
Load
V
S
Bleeder resistor R
Inrush Current
A load that has a large inrush current (e.g., a lamp or motor) will
damage the Proximity Sensor, in which case connect the load to the
Proximity Sensor through a relay.
E2EM
Printed in Japan
0599-3M (0599) a
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