Cut Sheet

Volume 8—Sensing Solutions CA08100010E—July 2015 www.eaton.com V8-T3-89
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3.16
Inductive Proximity Sensors
E51 Modular Limit Switch Style Sensors
Product Selection
Standard Sensors—Assembled with Terminal Wiring
Standard E51 sensors feature long sensing ranges and a choice of top or side sensing heads.
Alternate frequency units eliminate interference when mounted close to standard frequency
units. Order sensors in component form, as assembled plug-in units, or in a sealed version
where the sensor body is factory assembled to an epoxy filled receptacle with tamper-proof
screws to ensure a lasting seal.
Assembled Sensors—Standard (with Terminal Wiring)
Notes
1
All sensor heads feature a programmable output selector switch for NO or NC operation. Operation is as follows:
2
Logic module must be ordered separately, see Page V8-T3-91. These sensor bodies are rated NEMA 4, 4X and 13.
3
Receptacles feature terminal wiring with a 1/2 in NPT thread at the conduit entrance.
Other connection options are available:
Sensor Body and Receptacle Two-Wire Sensors Four-Wire Sensors
Operating voltage 20–264 Vac/dc 120 Vac 10–30 Vdc
Output NO or NC
1
NO and NC complementary NO and NC complementary
Sensor body E51SAL E51SCL E51SCN
Accepts logic
modules
2
E51SPL
PNP
E51SNL
NPN
Receptacle
3
E51RA E51RC E51RCB E51RN E51RN
Sensing
Range Shielding Frequency
Sensor Head Only Assembled Sensors with Head, Sensor Body and Receptacle
Catalog Number Catalog Number
Top Sensing
0.51 in
(13 mm)
Shielded Standard E51DT1 E51ALT1 E51CLT1 E51CNT1 E51PLT1 E51NLT1
Alternate E51DT2 E51ALT2 E51CLT2 E51CNT2 E51PLT2 E51NLT2
0.94 in
(24 mm)
Unshielded Standard E51DT5 E51ALT5 E51CLT5 E51CNT5 E51PLT5 E51NLT5
Alternate E51DT6 E51ALT6 E51CLT6 E51CNT6 E51PLT6 E51NLT6
Side Sensing
0.51 in
(13 mm)
Shielded Standard E51DS1 E51ALS1 E51CLS1 E51CNS1 E51PLS1 E51NLS1
Alternate E51DS2 E51ALS2 E51CLS2 E51CNS2 E51PLS2 E51NLS2
0.94 in
(24 mm)
Unshielded Standard E51DS5 E51ALS5 E51CLS5 E51CNS5 E51PLS5 E51NLS5
Alternate E51DS6 E51ALS6 E51CLS6 E51CNS6 E51PLS6 E51NLS6
For This Output Type:
Set Selector Position:
“TARGET” “NO TARGET”
NO Target present Target absent
NC Target absent Target present
Connection Option Catalog Number
Code
Suffix Example
20 mm thread at the conduit entrance — 20 E51ALT120
Mini-connector termination with epoxy
filled receptacle, see Page V8-T3-92 for
additional receptacle options
Two-wire,
3-pin connector
CSMS3F3CY1602 P3 E51ALT1P3
Four-wire,
5-pin connector
CSMS5D5CY1602 P5 E51CLT1P5
Pre-wired cable with epoxy filled
receptacle
8 ft long — S E51ALT1S
12 ft long — S12 E51ALT1S12
20 ft long — S20 E51ALT1S20
Top Sensing
Assembled Sensor
Sensor Heads
1
Side Sensing