Serviceline Industrial Sensors
Serviceline Explosion Protection

Incremental rotary encoder MNI40N

  • Clear function verification via two-color LEDs (red/green)
  • Simple installation and adjustment using assistance functions reduce costs
  • Self-diagnostics including the magnetic wheel provide quality assurance
  • Internal intelligence provides easy setup and reliable operation
  • The elastomer coating of the magnetic wheel provides resistance to dirt as well as thermal and mechanical shock
  • Long service life at high speeds and temperatures

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, also apply to Pepperl+Fuchs AG.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  MNI40N

Product Description
Magnetic, Non Contact
General specifications
Detection typemagnetic sampling
Pulse countmax. 7200
UL File NumberE223176 "For use in NFPA 79 Applications only" , if UL marking is marked on the product.
Functional safety related parameters
MTTFd942 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Indicators/operating means
LED red/greenOperating display / Alignment aid
Electrical specifications
Operating voltage10 ... 30 V DC
5 V DC for RS-422
No-load supply currentmax. 55 mA
Output typepush-pull, incremental or RS-422, incremental
Voltage drop< 2.5 V
Load currentmax. per channel 30 mA , short-circuit protected (max. per channel 20 mA, conditionally short-circuit proof)
Output frequencymax. 1 MHz
Cable∅4,7 mm, 4 x 2 x 0,128 mm2
connection with plug M12, 8-pin, L = 0.3 m
Standard conformity
Degree of protectionDIN EN 60529, IP67 , IP68 , IP69K
Climatic testingDIN EN 60068-2-30
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, 40 g, 10 ... 2000 Hz
Approvals and certificates
UL approvalcULus Listed, General Purpose, Class 2 Power Source, Type 1 enclosure , if UL marking is marked on the product.
adapters providing field wiring on request
Maximum permissible ambient temperaturemax. 75 °C (max. 167 °F)
Ambient conditions
Operating temperature-40 ... 100 °C (-40 ... 212 °F)
Storage temperature-40 ... 100 °C (-40 ... 212 °F)
Mechanical specifications
Magnetic wheelsteel 1.4021 (AISI 420)
ferrite filled cured rubber
Massapprox. 190 g
Rotational speedmax. 30000 min -1

Documents: MNI40N

Instruction leafletsLanguageFile TypeFile Size
Instruction leaflet / Beipackzettel ALLPDF986 KB


CADFile TypeFile Size
CAD Portal / CAD PortalLINK---

Approvals+Certificates: MNI40N

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-3933PDF78 KB
CA UL General PurposeE223176LINK---
US UL General PurposeE223176LINK---

Function: MNI40N

The magnetic incremental encoder MNI40 combines an exceptionally robust measurement system with intelligent diagnosis and alignment functions in the smallest space. Its highly compact encapsulated housing gives the sensor its high resistance to harsh environmental conditions. The installation-friendly design and simple guided adjustment of the sensor using two-color status LED reduces the installation time considerably.