Serviceline Industrial Sensors
Serviceline Explosion Protection

Heavy-duty incremental encoder ENI11HD-R

  • Up to 2500 ppr
  • Highly shock and vibration resistant
  • Recessed hollow shaft
  • Degree of protection IP66 / IP67 / IP69K
  • Optional: Electrically insulated shaft for a dielectric strength up to 2.5 kV
  • Variable connection by means of rotating terminal box with plug-in terminals
  • High bearing loads

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  ENI11HD-R

General specifications
Detection typephotoelectric sampling
Pulse countmax. 2500
Functional safety related parameters
MTTFd140 a
Mission Time (TM)20 a
L1050 E+9 at 1750 rpm
Diagnostic Coverage (DC)0 %
Electrical specifications
Operating voltage10 ... 30 V DC or 5 V DC ± 5 % (see "Output circuit" in the ordering information)
No-load supply currentmax. 70 mA
Output typepush-pull, incremental or RS 422, incremental
(see "Output circuit" in the ordering information)
Voltage drop< 2.5 V (push-pull, incremental)
Load currentmax. per channel 40 mA , short-circuit protected, reverse polarity protected (push-pull, incremental)
max. per channel 20 mA , short-circuit protected, reverse polarity protected (RS 422, incremental)
Output frequencymax. 200 kHz
Rise time600 ns
De-energized delay600 ns
ConnectorM23 connector, 12-pin , clockwise rotation
M23 connector, 12-pin , counter clockwise rotation
Cable∅7,5 mm, 6 x 2 x 0,14 mm2
Terminal compartmentCable duct for cable diameter ∅4 mm ... 13 mm
Standard conformity
Degree of protectionDIN EN 60529, IP66, IP67 or IP69K
Climatic testingDIN EN 60068-2-78 , no moisture condensation
Emitted interferenceEN 61000-6-4:2007/A1:2011
Noise immunityEN 61000-6-2:2005
Shock resistanceDIN EN 60068-2-27, 200 g, 6 ms
Vibration resistanceDIN EN 60068-2-6, 20 g, 10 ... 2000 Hz
Ambient conditions
Operating temperature-40 ... 80 °C (-40 ... 176 °F) fixed cable
Storage temperature-40 ... 80 °C (-40 ... 176 °F)
Mechanical specifications
Housing3.2315 aluminum
Flange3.2315 aluminum
ShaftStainless steel 1.4305 / AISI 303
Massapprox. 2200 g
Rotational speedmax. 3000 min -1
Starting torque≤ 20 Ncm
Shaft insulationmax. 2.5 kV (for dielectric strength version)
Shaft load
Axial≤ 300 N
Radial≤ 400 N
Angle offset1 °
Axial offsetmax. 1 mm
Length90 mm
Diameter110 mm


ECLASS 13.027270501
ECLASS 12.027270501
ECLASS 11.027270501
ECLASS 10.0.127270501
ECLASS 9.027270501
ECLASS 8.027270501
ECLASS 5.127270501
ETIM 9.0EC001486
ETIM 8.0EC001486
ETIM 7.0EC001486
ETIM 6.0EC001486
ETIM 5.0EC001486
UNSPSC 12.139121527

Details: ENI11HD-R


When conditions are tough, the ENI11HD heavy-duty rotary encoders provide reliable speed feedback for large asynchronous motors.

Heat, cold, dirt, permanent vibration, strong shocks, and electromagnetic interference pose no problem for these heavy duty encoders. The optional electrically insulated shaft guarantees a dielectric strength of up to 2.5 kV. This option prevents damage to the ball bearing due to current flashovers caused by shaft currents.

ENI11HD rotary encoders combine a long service life with a high level of reliability. The cover on the junction box, which can be rotated 4 x 90°, provides greater flexibility when installing and maintaining the device while also helping to save costs.

Product Documentation: ENI11HD-R

Language Selection:
Brief InstructionsLanguageFile TypeFile Size
Instruction leaflet / BeipackzettelALLPDF288 KB

Design / Simulation: ENI11HD-R

Language Selection:
CADLanguageFile TypeFile Size
CAD 3-D additional / CAD 3-D additionalALLSTP264 KB
CAD Portal / CAD PortalALLLINK---
CAD Portal / CAD PortalALLLINK---

Approvals: ENI11HD-R

Language Selection:
CertificatesCert No.LanguageFile TypeFile Size
US CA ULCoC 20190913-E223176 RptRef E223176-20081013ALLPDF280 KB
Declaration of Conformity
UK Declaration of Conformity (P+F) / UK-Konformitäterklärung (P+F)DOC-7160ALLPDF246 KB

Associated Products: ENI11HD-R

Female cordsetfa
Female cordsetfa
swivel arm, 70 mmfa
swivel arm, 120 mmfa
Grounding kit for ENI11HD rotary encoderfa
Gasket set for cable ductsfa
Mounting accessories for recessed hollow shaft 16 mmfa
Mounting accessories for recessed hollow shaft 20 mmfa
Support plate 70 mm, straight for ENI11 HDfa