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

Magnetic sensor MSK4000

Compact sensor, incremental, digital interface, reading distance 20 mm

Profile MSK4000:

  • Max. resolution of 0.25 mm
  • Repeat accuracy ±2 increments (max. ±0.5 mm)
  • Works with magnetic tape MB4000
  • Reading distance ≤20 mm

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Mechanical data
FeatureTechnical dataAdditional information

plastic ABS gray

Sensor/band reading distance5 … 20 mm
Cable sheath

PUR, suitable for drag-chain use

4-wire ø4.4-0.4 mm; 6, 8-wire ø5-0.4 mm

Cable bending radius5x cable diameter static
7.5x cable diameter dynamic
Service life of cable>5 million cycles under the following test conditions:
travel range 4.5 m
travel speed 3 m/s
acceleration 5 m/s2
ambient temperature 20 °C ±5 °C
Electrical data
FeatureTechnical dataAdditional information
Operating voltage24 V DC ±20 %

reverse polarity protected

5 V DC ±5 %

no reverse polarity protection

Current consumption<50 mA

PP, unloaded

<25 mA LD
Output circuitPP, LD (RS422), TTL
Output signalsA, A/, B, B/, I, I/

90° off-phase

Output signal level highUB - 2.5 V PP

RS422 specific

>2.4 V TTL
Output signal level low<0.8 V PP

RS422 specific

<0.4 V TTL
Pulse width of reference signal1 increment(s)
Real-time requirement

speed-proportional signal output

Type of connection

open cable end

plug connector


Signal patterns

Hint The logical condition of signals A and B is not defined in reference to the index signal I or the reference signal R. It can deviate from the signal form.

System data
FeatureTechnical dataAdditional information
Resolution0.25, 0.5, 1, 2 mm
System accuracy±2 mm

at TU = 20 °C, length-dependent error depends on the mounting situation

Repeat accuracy ±2 increment(s)
Measuring range
Travel speed≤15 m/s
Ambient conditions
FeatureTechnical dataAdditional information
Ambient temperature-10 … 70 °C
Storage temperature-30 … 80 °C
Relative humidity100 % condensation admissible
EMCEN 61000-6-2 interference resistance / immission
EN 61000-6-4

emitted interference / emission

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 MSK4000
Pin assignment
Not inverted
GND black 1
+UB brown 2
A red 3
B orange 4
nc   5
nc   6
nc   7
Inverted with reference signal
A red 1
B orange 2
I blue 3
+UB brown 4
GND black 5
/A yellow 6
/B green 7
/I violet 8
A red 1
B orange 2
nc   3
+UB brown 4
GND black 5
/A yellow 6
/B green 7
Hint for mounting
A, Sensor/tape reading distance5 … 20 mm
B, Lateral offset±5 mm
C, Alignment error±10°
D, Longitudinal inclination±3°
E, Lateral inclination±3°

MSK4000 Hint for mounting
Symbolic representation

Scope of delivery
  • MSK4000
  • Mounting instructions
  • Fastening set
Ordering table
Feature Order data Specifications Additional information
Operating voltage
10 … 30 V DC
5 V DC
Type of connection
open cable ends
round connector without mating connector
cable extension on request
Cable length
01.0 ... 20 m, in intervals of 0.1 m
others on request
Output circuit
push-Pullonly with operating voltage 4
Line Driver
TTLonly with NI output circuit
Output signal
not inverted
invertednot with TTL output circuit
Reference signal
periodic indexonly with I output signal
0.25, 0.5, 1, 2 in mm
Ordering key

MSK4000 - A - A - B - C - D - E - F - G

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Melanie Augustin

Melanie Augustin
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