2
Instruction Leaflet
IL053007EN
Effective October 2020
E56 High Noise Immunity
inductive proximity sensor
EATON
www.eaton.com
Mounting considerations
All sensors should be mounted using four 3/8-inch bolts through the
mounting holes provided. A sensor can be mounted to any surface
without affecting sensor performance, but it is recommended to
use a solid base to ensure reliable operation. For all models, ensure
there is adequate distance between the sensor face and any
adjacent metals. See the diagrams below for isolation distances.
When E56 High Noise Immunity sensors are mounted side-by-side,
there is the possibility of interaction between the magnetic fields
of the sensors. This could cause unreliable operation. Follow the
limitations noted in the below illustration when mounting sensors
close to one another.
Sensor isolation minimum distances
Sensing
Sensing fields for the E56 High Noise Immunity sensor are shown
below. In addition to maximum sensing distances, these diagrams
illustrate the performance of the sensor as the target approaches
the sensing face in an axial (head-on) or lateral (side or slide-by)
manner. In these diagrams, the sensing distances shown are based
on standard target sizes and 4130 steel target material. Sensing
range will decrease if a target is used that is smaller than the
standard target size. See the table below for standard target sizes
for each size sensor.
Sensor type
Sensor size
(baseplate)
Standard target size
Small
4.0 inches
3 x 3 inches, 0.062 inch thick
Large (1.0 inch range)
5.0 inches
4 x 4 inches, 0.062 inch thick
Large (1.5 inch range)
5.0 inches
4 x 4 inches, 0.062 inch thick
Sensing field diagrams
Detection for laterally approaching targets occurs at the point where
the target touches the envelope of the sensing curve as depicted
below. The curves must be corrected for smaller targets and will be
slightly different for other metals than 4130 steel.
Small sensor — 0.5 inch range
Lateral
Axial
Operate point
target moving
right to left
Operate point
target moving
left to right
Large sensor — 1.0 inch range
Lateral
Axial
Operate point
target moving
right to left
Operate point
target moving
left to right
Large sensor — 1.5 inch range
Lateral
Axial
Operate point
target moving
right to left
Operate point
target moving
left to right
Facing sensors — 6x sensing range
Sensor to background ferrous metal
3x sensing range
Sensor to background nonferrous metal
2x sensing range
Sensor to sideground metal below sensor face
baseplate contact ok
Sensor to sideground metal above sensor face
1/2 sensor diameter clearance required
Side-by-side sensors — 1x sensing range
