Emergency: same day
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SICK Stegmann · Hiperface, SSI, Dicoder
SICK Stegmann Hiperface encoder repair: SKS36, SKM36, SRS, SRM, SCS, SNS
SICK Stegmann Hiperface encoders are used on Allen-Bradley, Rexroth, Schneider, Elau, Fagor, Baumüller, SEW, Lenze and other servo motors, and most of them hold the motor's data in memory. We test the sine and cosine signals and the Hiperface data link, repair or replace the encoder, and program the motor data back.
Repair turnaround you can plan around
Send a photo of the nameplate first. We confirm whether the motor is repairable, and the quote, the same working day.
Urgent: 3 working days
Repair, encoder alignment and test, counted from the day the motor reaches the bench and the quote is approved.
Standard: 7 working days
Full repair, encoder alignment, run test under load and a printed test report.
- Free repairability check from a nameplate photo
- Printed test report with every motor
- Written warranty, terms stated on every quotation
- Pickup can be arranged; parts that must be imported are quoted with their own timeline
01Models
Encoder models we test, repair and replace
| Encoder | Interface | Resolution (incremental / position / turns) | Typical motors |
|---|---|---|---|
| SKS36 | Hiperface, single-turn | 512 / 4,096 / none | Allen-Bradley MPL, Rexroth MSK, Schneider BMH, Elau |
| SKM36 | Hiperface, multi-turn | 512 / 4,096 / 4,096 | Allen-Bradley MPF, Rexroth MSK, Schneider BMH, Elau |
| SRS50, SRS60 | Hiperface, single-turn | 4,096 / 32,768 / none | Allen-Bradley MPL, MPF, 1326AB, H series; Baumüller; Berger Lahr SER |
| SRM50, SRM60 | Hiperface, multi-turn | 4,096 / 32,768 / 4,096 | Allen-Bradley MPL, MPF, 1326AB, H series |
| SCS60, SCS70 | Hiperface, single-turn | 2,048 / 16,384 / none | Modicon, Indramat MDD and 2AD |
| SCM60, SCM70 | Hiperface, multi-turn | 2,048 / 16,384 / 4,096 | Modicon |
| SNS50, SNS60 | Hiperface | 4,096 / none / none | Fagor FXM and FKM, Allen-Bradley 8720 spindle |
| SEL37, SEK37, SEL52, SEK52 | Hiperface | Varies | Schneider BMH and compact motors |
| CKS, CT-Coder | Direct-to-encoder types | Varies | Compact servo motors |
| Dicoder | Incremental ABZ with UVW | Varies | Control Techniques, Mavilor, Berger Lahr SER3xx, SIG Positec |
| AG100 MSSI, AG661 | SSI absolute | Varies | Indramat MAC, Stromag |
Hiperface encoders run on about 7 to 12 V, not 5 V. Powering one from a 5 V tester or the wrong cable can give a false fault.
02Faults
How these encoders usually fail
- Hiperface data link lost, so the drive cannot read position or motor data
- Sine and cosine amplitude low or distorted from a failing LED or sensor
- Memory blank or corrupted after a voltage spike
- Multi-turn gear stage worn on SKM, SRM and SCM types
- Cracked connector or damaged flex cable inside the motor
- Commutation offset wrong after the encoder was moved
03Identify
Reading the label
SK, SR, SC and SN are the families; S as the third letter means single-turn and M means multi-turn, so SKS36 is single-turn and SKM36 is multi-turn. The number is the housing size. Allen-Bradley motors often carry an AB part number on the motor, while the Stegmann type is on the encoder label under the cover.
04Motors
Motors fitted with these encoders
Allen-Bradley MPL, MPF, MPS, 1326AB, H series and 8720 spindles, Bosch Rexroth MSK, Elau SH, SM and SB, Fagor FXM and FKM, Schneider Electric BMH, Modicon BPH, Telemecanique, Berger Lahr SER, Baumüller, Oswald, KEB, SEW Eurodrive DFS and CFM, Lenze MDXK, Control Techniques, Octacom, Lafert, Parker HDY.
05Service
What we do
Test and repair
Every check on the feedback test list, before and after repair.
Alignment
Commutation set to the rotor at every pole pair.
OpenMemory programming
Motor data written to a replacement encoder.
OpenReplacement
Matched encoder fitted, aligned and run tested.
Open06FAQ
Questions
My Allen-Bradley MPL motor shows a feedback or motor ID fault. Is the encoder dead?
Not necessarily. The Hiperface memory may be corrupted or the cable may be damaged. We read the memory first; if the data is lost but the encoder works, we program it back.
Can you replace an SRM60 on a 1326AB motor?
Yes. The replacement is fitted, aligned, and programmed with the Allen-Bradley motor data so the Kinetix or Ultra drive accepts it.
Why are Hiperface encoders sensitive to the power supply?
They need a higher supply than 5 V encoders. A wrong supply gives weak signals or no communication, which looks like a fault.
Free downloads for your maintenance file
Printable one-page sheets from our bench. More on the resources page.
Servo motor encoder quick reference
Encoder families, interfaces, counts per revolution and the motors they sit on: Fanuc pulsecoders (alpha A64, A1000), Mitsubishi OBA/OSA, Yaskawa UTOPH, Tamagawa, Heidenhain ECN/EQN/ERN and SICK SKS/SRS/SRM.
PDF · 2 pages · 8 KB · free, no sign-up
Download PDFServo encoder alarm quick sheet
Common encoder and feedback alarms on Fanuc, Yaskawa, Mitsubishi and Siemens drives, what each usually points to, and what to check on the cable and connector first.
PDF · 1 page · 4 KB · free, no sign-up
Download PDF07Enquiry
Send the nameplate or encoder label
A clear photo of the motor nameplate and, if the cover is off, the encoder label is enough to start. We reply with whether it can be repaired and a quote.
Message received
Our team replies by email or WhatsApp, usually the same working day. For a line-down motor, WhatsApp +91 97866 22233.