Pepperl Fuchs MNI20N Data Sheet

Incremental rotary encoder MNI20N

Technical data

General specifications

Detection type magnetic sampling
Pulse count max. 5000

UL File Number E223176 "For use in NFPA 79 Applications only"

Functional safety related parameters

MTTFd 1093 a

Model Number

MNI20N

Magnetic, Non Contact

Features

• Cost-effective, bearing-free rotary
encoder for rotational speed
measurement

• Simple installation

• Operating display verifies function

• Up to 7200 pulses

• High degree of protection (IP67)

• Robust and flexible magnetic rings

Description

Mission Time (T
Diagnostic Coverage (DC) 0 %

Indicators/operating means

LED green Operating display

Electrical specifications

Operating voltage U

No-load supply current I

Output

Output type push-pull, incremental or RS-422, incremental
Voltage drop U
Load current max. per channel 30 mA , short-circuit protected (max. per

Output frequency max. 800 kHz

Connection

Cable Ø4.7 mm, 8 x 0.128 mm2, 2 m

Standard conformity

Degree of protection DIN EN 60529, IP67
Climatic testing DIN EN 60068-2-30
Emitted interference EN 61000-6-4:2007/A1:2011
Noise immunity EN 61000-6-2:2005
Shock resistance DIN EN 60068-2-27, 200 g, 6 ms
Vibration resistance DIN EN 60068-2-6, 40 g, 10 ... 2000 Hz

Ambient conditions

Operating temperature -25 ... 85 °C (-13 ... 185 °F)
Storage temperature -25 ... 85 °C (-13 ... 185 °F)

Mechanical specifications

Material

Housing PA
Cable PUR

Magnetic ring PA , Plastic-coated ferrite
Mass approx. 190 g
Rotational speed max. 20000 min

) 20 a

M

B

0

d

10 ... 30 V DC
5 V DC for RS-422

max. 55 mA

≤ 2.5 V (< 2.5 V)

channel 20 mA, conditionally short-circuit proof)

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The magnetic incremental encoder MNI20 is an
exceptionally robust measurement system in the
smallest space. Its highly compact encapsulated
housing gives the sensor its high resistance to
harsh environmental conditions. The installation­friendly design reduces the installation time
considerably.

Approvals and certificates

UL approval cULus Listed, General Purpose, Class 2 Power Source,

Maximum permissible ambient
temperature

Type 1 enclosure , adapters providing field wiring on
request

≤ 75 °C (≤ 167 °F)

Release date: 2018-03-23 15:08 Date of issue: 2018-03-23 t158322_eng.xml

Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.

1

Incremental rotary encoder MNI20N

Dimensions

48

LED

22.4

LED

11.2

5.7

40

32

ø 5

0.2 ... 0.5

ø 3.8

12

5

Electrical connection

Signal Cable, 8-core

GND White

+U

n. c. Blue

n. c. Red

Screen -

D± 1

C ± 0.15

ø A

ø B

ø A ø B C D

Number of poles

32 20.44 14.99 16.27 1.0
50 31.70 25.00 21.90 0.3

b

Brown

A Green

BGrey

Yellow

A

Pink

B

Release date: 2018-03-23 15:08 Date of issue: 2018-03-23 t158322_eng.xml

Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.

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