WARNING
IN ORDER TO AVOID ELECTRIC SHOCK OR OTHER
POSSIBLE INJURY:
• DO NOT USE THIS PRODUCT FOR HUMAN SAFETY
APPLICATIONS. IT WAS NOT DESIGNED, TESTED, OR
RECOMMENDED FOR THIS USE.
• DO NOT USE THIS PRODUCT IN HAZARDOUS LOCATIONS
(E.G., EXPLOSIVE ATMOSPHERES). IT WAS NOT DESIGNED,
TESTED, OR RECOMMENDED FOR THIS USE.
• ENSURE THE PRODUCT IS PROPERLY WIRED TO THE CORRECT
POWER SUPPLY FOR THE APPLICATION. REFER TO THE
SPECIFICATIONS AND WIRING DIAGRAMS IN THIS MANUAL.
Instruction Leaflet IL053007EN
Effective October 2020
Introduction
The Eaton E56 High Noise Immunity pancake-style proximity
sensor is a solid-state device used to detect metallic targets
at range. The E56 High Noise Immunity is available in two
different size categories with three sensing ranges: small
(4-inch mounting baseplate) with a 0.5 inch sensing range, and
large (5-inch mounting baseplate) with 1.0 and 1.5 inch sensing
range versions. Connectivity is provided by a preinstalled
shielded cable. The sensor is mounted to a stainless steel
baseplate drilled for four-hole mounting. The E56 High
Noise Immunity inductive proximity sensor family provides
robustness and survivability in the most difficult application
environments. The sensor family is rated to 200 Volts/meter
of radiated noise and survives in high shock and high vibration
application environments. The E56 High Noise Immunity
enclosure meets the requirements of NEMA
T
Type 4, 4X, 6,
and 6P and is rated IP67 and IP68. Additional features include
complementary outputs 1NO/1NC on DC models, and output/
fault status indicator LEDs on applicable models. Sensors are
available in four-wire DC and two-wire AC versions.
Basic operation
A proximity sensor generates a sensing field in the vicinity of
the face of the sensor. When a metal object enters this field,
it disturbs the field in a way that is recognized by a detector
circuit, which then energizes the sensor output. E56 High Noise
Immunity sensors will detect all metals at similar distances,
and are officially range-rated against 4130 steel. The exact
distance at which a target is detected is dependent upon the
size, thickness, and metallic composition of the target.
To determine sensing distance with your target, see the
sensing field diagrams on
Page 2
. These diagrams serve
as a general reference and show where the target will be
detected for lateral slide-by) and axial (head-on) approaches.
These curves must be corrected for smaller-than-standard
targets and for targets composed of other metals. Standard
targets are listed on
Page 2
.
E56 High Noise Immunity
inductive proximity sensor
Table 1. Catalog numbering system
ote:
N
Not all possible combinations shown in the table are offered
as standard.
E56M B A D 05 A 20 L
Product family
E56M
= E56 High Noise
Immunity
Size (in inches)
A
= Baseplate: 4.0
Sensing head: ø 3.4
Sensing range: 0.5
B
= Baseplate: 5.0
Sensing head: ø 4.5
Sensing range: 1.0
C
= Baseplate: 5.0
Sensing head: ø 4.5
Sensing range: 1.5
Output type
A
= Normally open
B
= Normally closed
C
= 1 Normally open
1 Normally closed
Voltage type
C
= AC 2-wire
D
= DC 4-wire
Connection
A
= Shielded cable
Cable length
XX
= Cable length (feet)
LED indication
L
= Versions with
indicator LED
Sensing range
05
= 0.5 inch
10
= 1.0 inch
15
= 1.5 inch
