E2E-X5Y1-53-US Datasheet, PDF (16/16 Pages) Omron Electronics LLC – Short Barrel Inductive Prox

E2E 2-WIRE AC
E2E 2-WIRE AC
J PRECAUTIONS FOR AC 2-WIRE PROXIMITY SENSORS IN OPERATION, CONTINUED
Model
AC
2-wire
Connection type
OR
(parallel connection)
Method
A
A
Incorrect
Load
B
Correct
Load
B
Description
In principle, more than two Proximity Sensors
cannot be connected in parallel.
Provided that Proximity Sensor A does not
operate with Proximity Sensor B simultaneously
and there is no need to keep the load operating
continuously, the Proximity Sensors can be
connected in parallel. In this case, however, due
to the total leakage current of the Proximity
Sensors, the load may not reset properly.
VAC power
supply V_S
It is not possible to keep the load operating
continuously with Proximity Sensors A and B in
simultaneous operation to sense sensing objects
due to the following reason.
When Proximity Sensor A is ON, the voltage
imposed on Proximity Sensor A will drop to
approximately 10 V and the load current flows
into Proximity Sensor A, and when one of the
sensing objects is close to Proximity Sensor B,
Proximity Sensor B will not operate because the
voltage imposed on Proximity Sensor B is 10 V,
which is too low. When Proximity Sensor A is
OFF, the voltage imposed on Proximity Sensor B
will reach the supply voltage and Proximity
Sensor B will be ON. Then, Proximity Sensor A
as well as Proximity Sensor B will be OFF for
approximately 10 ms, which resets the load for
an instant. To prevent the instantaneous
resetting of the load, use a relay as shown on the
left.
NOTE: DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters to inches divide by 25.4.
R
OMRON ELECTRONICS LLC
One East Commerce Drive
Schaumburg, IL 60173
1-800-55-OMRON
Cat. No. CEDSAX4
11/01
OMRON ON--LINE
Global -- http://www.omron.com
USA -- http://www.omron.com/oei
Canada -- http://www.omron.com/oci
OMRON CANADA, INC.
885 Milner Avenue
Scarborough, Ontario M1B 5V8
416-286-6465
Specifications subject to change without notice.
Printed in U.S.A.