MSI-P Series Linear Position Sensors with SSI Output
Profile-style, high-precision, absolute, non-contact magnetostrictive position sensor with a measuring range of 25 to 4000 mm.
Position is measured by position magnets that travel along the waveguide with a maximum air gap of up to 10 mm.
Price on request
Design features
- The modular design allows fast servicing and repair without releasing pressure from the hydraulic circuit.
- The sensor is compatible with all BALLUFF position magnets and with selected magnets from Temposonics.
- The sensor provides absolute linear measurement, with output signals proportional to the displacement of the position magnet.
- An LED indicator is provided for sensor diagnostics.
- The sensor delivers high accuracy with resolution up to 1 μm.
- Measuring length is available from 25 to 4000 mm with 1 mm increments.
- Linearity: < 0.01 %
- Repeatability: < 0.001 %
- Operating temperature: up to 85 °C
- Protection class: IP67
- The sensor supports the use of water-resistant and Teflon cables.
Configurator
MSI-P
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MSI-P Series Linear Position Sensors with SSI Output, order code:
Scope of delivery
THE SCOPE OF SUPPLY INCLUDES: | |
Linear position sensor | |
Certificate of Conformity | |
Manual | |
Warranty card | |
Mounting brackets For L < 500: 2 clamping brackets Fot L > 500: 2 clamping brackets + 1 additional clamping bracket every 500 mm | |
Mating connectors and magnets for the sensor must be ordered separately! | |
Product ordering code
TECHNICAL REQUIREMENTS FOR ORDER PLACEMENT | |||||||||||||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12* | ||||||||||
MSI-P | . | L | . | 0 | 5 | 0 | 0 | . | T | . | D70 | . | S | 1 | B | 2 | 1 | 0 | 0 | . | ER1 |
1 | Series: MSI-P - Profile Housing | ||||||||||||||||||||
2 | Magnet type: - Without magnet S – Magnetic slider “S”, mechanically coupled, free travel SP – Magnetic slider “SP”, mechanically coupled, close-fit design L – Position magnet “L”, air gap up to 10 mm K – Position magnet “K”, air gap up to 4 mm | ||||||||||||||||||||
3 | Measuring range: 0025...4000 mm, 1 mm step Other lengths available on request | ||||||||||||||||||||
4 | Zero point: T - 13 mm | ||||||||||||||||||||
5 | Connection: D70 – 7-pin male connector, M16 S32 – 8-pin male connector, M16 D84 – 8-pin male connector, M12 R02 – PVC cable without connector, 2 m; option: R01...R20 (1...20 m) H02 – PUR cable without connector, 2 m; option: H01...H20 (1...20 m) T02 – Teflon cable without connector, 2 m; option: T01...T20 (1...20 m) S02 – Silicone cable without connector, 2 m; option: S01...S20 (1...20 m) W02 – Water-resistant cable without connector, 2 m; option: W01...W20 (1...20 m) | ||||||||||||||||||||
6 | Output signal: S - SSI | ||||||||||||||||||||
7 | Parallel code length: 1 – 25 bits 2 – 24 bits 3 – 26 bits | ||||||||||||||||||||
8 | Coding: B – Binary G – Gray code | ||||||||||||||||||||
9 | Resolution: | ||||||||||||||||||||
mm | μ | ||||||||||||||||||||
1 - 0,005 2 - 0,01 3 - 0,05 4 - 0,1 5 - 0,02 6 - 0,002 7 - 0,04 8 - 0,001 | 5 10 50 100 20 2 40 1 | ||||||||||||||||||||
10 | Version: 1 – Standard | ||||||||||||||||||||
11 | Options: 00 – Forward measuring direction, asynchronous mode 01 – Reverse measuring direction, asynchronous mode 02 – Forward measuring direction, synchronous mode 05 – Forward measuring direction, with 26-bit parallel code length: 25 bits = alarm; 26 bits = parity check 16 – Forward measuring direction, synchronous mode, internal linearization | ||||||||||||||||||||
12* | Option 2: – None ER1 – Extending rod with stabilizer for standard sensor mounting | ||||||||||||||||||||
Technical specifications
OUTPUT PARAMETERS | ||||
Measured value | Position | |||
Operating range, L | 25 — 4000 mm, 1 mm step | |||
Displacement speed | Any | |||
Update rate | 0.5 ms up to 1200 mm; 1.0 ms up to 2400 mm; 2.0 ms up to 4000 mm; | |||
Status diagnostics | LEDs next to the connector | |||
INTERFACE | ||||
Digital interface | RS 422 | |||
Data transfer protocol | SSI – Synchronous Serial Interface Data format: Binary coding or Gray code (24...26 bits) | |||
Number of magnets | 1 | |||
Max cable length | Cable length, m: Baud rate, Mbit/s: | <3 1000 | <50 <400 | <100 <300 |
For stable operation, it is recommended to use a cable no longer than 20 meters with a data transmission rate not exceeding 500 kBaud. | ||||
POSITION MEASUREMENT ACCURACY | ||||
Linearity deviation | < ± 0.01 % F.S. (minimum ± 50 µm for L < 500 mm) | |||
Repeatability | < ± 0.001 % F.S. (minimum ± 2.5 µm) | |||
OPERATING CONDITIONS | ||||
Operating temperature | -40 °C…+85 °C | |||
Rated pressure | 350 bar, 600 bar peak (optional 800 bar) | |||
Humidity | 90 % rel. humidity, no condensation | |||
Ingress protection | IP65, IP67 at cable outlet | |||
MATERIALS | ||||
Sensor electronics housing | Aluminum, plastic | |||
Profile | Aluminum | |||
Flange | Stainless steel 08Х18Н10 / AISI 304 | |||
MOUNTING | ||||
Mounting position | Any For L < 500: Use 2 clamping brackets For L > 500: Add 1 clamping bracket every 500 mm | |||
Profile | Movable mounting brackets | |||
Position magnet mounting | Mounting hardware and screws made of non-magnetic material | |||
ELECTRICAL CONNECTION | ||||
Operating voltage | For L < 2500: +12/24 VDC (-10% / +20%) For L > 2500: +24 VDC (-15% / +20%) | |||
Reverse polarity protection | up to –30 V DC | |||
Overvoltage protection | up to 36 V DC | |||
Current consumption | 50…140 mA (depending on sensor length) | |||
Insulation resistance | 500 V DC (between sensor housing and 0 V DC) | |||
STANDARDS, EMC TESTS | ||||
Shock test | 100 g, single shock according to IEC 60068-2-7 | |||
Vibration test | 15 g / 10–2000 Hz according to IEC 60068-2-6 | |||
EMC tests | GOST R IEC 61326-1-2014 | |||
Connection: cable outlet
WIRE | PIN | FUNCTION | ||
D70 | S32 | |||
Black | 1 | 5 | Data (-) | |
White | 2 | 2 | Data (+) | |
Yellow | 3 | 1 | Clock (+) | |
Green | 4 | 3 | Clock (-) | |
Red | 5 | 7 | +24 VDC (-15 / +20 %) | |
Blue | 6 | 6 | 0 VDC (Power supply) | |
Connection: D70 connector
PIN ASSIGNMENT | PIN | FUNCTION |
![]() M16 male (view from sensor side) | 1 | Data (-) |
2 | Data (+) | |
3 | Clock (+) | |
4 | Clock (-) | |
5 | +24 VDC (-15 / +20 %) | |
6 | 0 VDC (Power supply) | |
7 | Not connected |
Connection: S32 connector
PIN ASSIGNMENT | PIN | FUNCTION |
![]() M16 male (view from sensor side) | 1 | Clock (+) |
2 | Data (+) | |
3 | Clock (-) | |
4 | Not connected | |
5 | Data (-) | |
6 | 0 VDC (Power supply) | |
7 | +24 VDC (-15 / +20 %) | |
8 | Not connected |
Connection: D84 connector
PIN ASSIGNMENT | PIN | FUNCTION |
M12 male connector (view from cable entry side) | 1 | Clock (+) |
2 | Clock (-) | |
3 | Data (+) | |
4 | Data (-) | |
5 | Not connected | |
6 | Not connected | |
7 | +24 VDC (-15 / +20 %) | |
8 | 0 VDC (Power supply) |
Installation recommendations

Interface
SSI PROTOCOL TIMING DIAGRAM |
![]() This oscillogram shows a standard SSI transmission. Channel 1 reads the clock signal "Clock (+)" Channel 2 reads the binary code "Data (+)" The interval between two transmissions (Monoflop time) is 16 microseconds. This performance corresponds to Temposonics V series sensors. As a result, our sensors are compatible with all controllers currently available on the market.** |
Connection example
DEVICE CONNECTION DIAGRAM |
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Setting
When replacing a failed sensor, recalibration of the equipment is required in most cases. This can be done in two ways:
- If the customer’s machine has a calibration function, after replacing the sensor, the operator assigns the new end positions to the machine’s control system by moving the mechanism in manual mode.
- Using the MSI-253 135 programmer, the new zero point value can be programmed directly into the sensor. The procedure is similar to the first method, but in this case, the value is assigned to the sensor rather than to the customer’s machine.
MSI-253 135 PROGRAMMER | |
![]() | Description: USB-SSI programmer for digital sensors of the following series: MSI-H, MSI-P, MSI-D, MSI-F, MSI-B. Functions: Zero point programming; Ability to modify all SSI parameters; Sensor functionality diagnostics. |
Scope of delivery: Programmer art. no. MSI-253 135 for SSI linear position sensors (1 pc.); Power supply 220 VAC → 24 VDC (1 pc.); USB cable (1 pc.); Ring-shaped position magnet art. no. MSI-201 542-2 (1 pc.); Connection cable for sensor with D70 connector (1 pc.); Connection cable for sensor with S32 connector (1 pc.); User manual (1 pc.). | |
Status diagnostics
LED DIAGNOSTICS | GREEN | RED | STATUS |
![]() | Off | Off | No power supply or sensor fault |
On | Off | Normal operation | |
On | On | No position magnet or incorrect number of magnets | |
Depends on status | Off | Programming mode, accessible via USB-SSI programmer art. no. MSI-253 135 |
Interchangeability
ORDER CODE | BALLUFF EQUIVALENT |
_ _ _ _ measuring length (mm) ** cable length (m) | |
Downloads
Technical documentation
Certificates
Inquiry Form
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