Headquarters: SIKO GmbH Weihermattenweg 2 79256 Buchenbach Germany Phone+49 7661 394-0

Magnetic sensor MSK320R

Incremental, redundant signal outputs, scaling factor selectable

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The MSK320R contains two sensor elements and two signal conditioners, therefore providing two independent output signals A1. A2. B1 and B2 as well as the associated inverted signals  /A1. /A2 /B1 and /B2. Combined with a safe input card, the sensor can be used in the overall system up to Performance Level PLd.

Profile MSK320R:

  • Enhanced safety owing to independent output channels
  • 2 magnetic sensors and 2 signal conditioners in one sensor head
  • Works with MB320/1 magnetic tape, MRI01 or MR320 magnetic ring, MBR320 magnetic tape ring
  • Reading distance ≤2 mm
  • Repeat accuracy of ±1 increment
  • Great application temperature range of  -40 … 85° C
  • Optionally available with Deutsch connectors
  • Cost advantage by installation of one MSK320R sensor instead of two MSK320 sensors

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Mechanical data
FeatureTechnical dataAdditional information

zinc die cast

ZM design

Sensor/band reading distance0.1 … 2 mm reference signal O
Sensor/ring reading distance0.1 … 2 mm reference signal O
Cable sheath

PUR drag chain-compatible

10-core,  ø4.8 ±0.15 mm

Electrical data
FeatureTechnical dataAdditional information
Operating voltage4.5 … 30 V DC reverse polarity protected
Current consumption<20 mA

at 24 V DC, off-load

<75 mA


Output circuitPP, LD (RS422) PP only with 4.5 ... 30 V DC and LD only with 4.5 ... 6 V DC
Output signalsA1, /A1, B1, B/1, A2, A/2, B2, B/2

quadrature signal

Output signal level high

>UB -2.5 V


>2.5 V


Output signal level low<0.8 V


<0.5 V


Pulse width of reference signal1 increment(s)
Real-time requirement

velocity-proportional signal output

Type of connection

open cable end

Signal pattern

Hint The logic state of signals A1/B1 relating to signals A2/B2 is not defined. The phasing A1/B1 and A2/B2 may deviate from the signal pattern.

System data
FeatureTechnical dataAdditional information
Resolution0.8, 0.4, 0.2, 0.1, 0.05, 0.025, 0.0125 mm each channel configurable
Scaling factor1, 2, 4, 8, 16, 32, 64 each channel configurable
System accuracy±(0.1 + 0.01 x L) mm, L in m at Tu = 20 °C, 0.8 mm sensor/tape reading distance with 0.8 mm nominal distance 
±0.1 ° at Tu = 20 °C, 0.8 mm sensor/ring reading distance with 0.8 mm nominal distance
Repeat accuracy ±1 increment(s)
Measuring range
Circumferential speed≤25 m/s
Travel speed≤25 m/s
Ambient conditions
FeatureTechnical dataAdditional information
Ambient temperature-40 … 85 °C
Storage temperature-40 … 85 °C
Relative humidity100 %

condensation admissible

EMCEN 61326-1 immunity requirement of industrial applications, emission limit class B
Protection categoryIP67 EN 60529
Shock resistance500 m/s2 , 11 ms EN 60068-2-27
Vibration resistance100 m/s2, 5 … 150 Hz EN 60068-2-6
Magnetic sensor MSK320R
Pin assignment
SignalE1 (cable color)
Hint for mounting

For systems with reference points on the magnetic ring please take care that sensor and ring are aligned correctly (see picture)

A, Sensor/ring reading distance≤2 mm
B, Lateral offset±2 mm
C, Alignment error±3°
D, Longitudinal inclination±1°
E, Lateral inclination±3°

MSK320R Hint for mounting
symbolic sensor representation

MSK320R Hint for mounting
symbolic sensor representation

Scope of delivery
  • MSK320R
  • Mounting instructions
Ordering table
Feature Order data Specifications Additional information
Cable length
0.1 m
01.0 ... 20.0 m, in intervals of 1 m
Resolution linear/ scaling factor radial A1/B1
0.0125/64, 0.025/32, 0.05/16, 0.1/8, 0.2/4, 0.4/2, 0.8/1
others on request
Resolution linear/ scaling factor radial A2/B2
0.0125/64, 0.025/32, 0.05/16, 0.1/8, 0.2/4, 0.4/2, 0.8/1
others on request
Ordering key

MSK320R - E1 - A - I - O - B - C