E51SPL Eaton

Description

EATON E51SPL PROXIMITY SENSOR​​

Product Dimensions：

INTRODUCTION
File E51 Sensors are comprised of
three modular components, easily
assembled to form a complete
device. The components consist of
a sensor head, a solid state plug-in
switch and a wiring receptacle.
Any E51 Inductive Proximity, Photoelectric
Fiber Optic Sensor Head
may be used with the E51SNL or
E51SPL switch bodies, allowing
easy installation and modiffcation of
switch function and sensing characteristics.
The switch body plugs into the
Eaton E51RN Wiring Receptacle, and
connections to the line and loads are
made according to the diagram below.
OPERATION
Customer connections to the sensor are made through the Catalog
No. E51RN receptacle. Mechanical keying prevents other Eaton
wiring receptacles from being used with the three-wire DC switch
bodies. This will prevent the inadvertent installation of an AC switch
body from being connected to a receptacle wired from a DC source,
for example.
E51SNL and E51SPL Solid State Switches both have a normally
open and normally closed (N.O. & N.C.) complementary output conffguration
(refer to “Wiring Diagrams” below).
Both devices have factory-installed light emitting diodes which signify
switch closure for both N.O. and N.C. contacts. These devices are
also protected from damage should reverse polarity DC voltage be
applied to them
The resettable short circuit protection feature built into these
switches will turn the output off if the load is shorted or the output
is inadvertently applied across the DC power supply. When the protection
feature operates, it causes the light emitting diode for that
output to turn OFF, as a fault indication. The output can be reset by
cycling power, or by moving a target in and out of the sensing range.
When power is ffrst applied to the switch bodies, both N.O. and
N.C. outputs will be open and both LEDs will be off. At the end of
this “time before availability” period the outputs will be open or
closed, as determined by the signal for the sensor head.
INSTALLATION
File E51 Switches may be wired into common conduit with wiring
from other AC or DC control devices. Grounding by means of the
grounding terminal provided in the wiring receptacle is optional or
as required by the applicable electrical code.
Caution: E51SNL and E51SPL switches must always be connected
with a suitable load. They should not be connected to
relays whose pick-up currents exceed their maximum current
rating. They should not be connected to incandescent
lamp loads which exceed their incadescent steady state
current rating. If the load current rating is exceeded, the
short circuit protection feature may cause faulty operation.
Three-wire DC Devices – E51 three-wire DC sensors (both PNP and
NPN) have two complementary outputs (1 N.O. – 1 N.C.). Two loads
can be connected at the same time. To connect only one load, wire
only the desired output terminal.
E51 three-wire devices have four terminals – two are connected directly
across the line, the remaining two are for the two outputs to the
loads. The operating current for the sensors (burden current) is supplied
through the line connections – leakage current through the load
in the microampere range is negligible.
Three-wire DC Sensors to Parallel – E51 three-wire DC sensors
can operate in parallel to give an OR function.

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