Emergency: same day
For a line-down motor, where the fault and parts allow. WhatsApp us before you send it so the bench is kept free.
Sanyo Denki · Sumtak · Kawasaki
Sanyo Denki, Sumtak and Kawasaki encoder repair
Sanyo Denki servo motors and the robots built on them, from Nachi, Kawasaki and Meiden, use Sanyo Denki, Sumtak and Kawasaki encoders, both serial and wire-saving incremental. We test them, repair or replace them, and align them to the rotor.
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 | Type | Counts per turn | Typical motors |
|---|---|---|---|
| INC-E | Wire-saving incremental | 8,000 or 24,000 (2,000 or 6,000 pulses) | Sanyo Denki P series |
| E03007758 | Serial with ABZ | 8,192 | Sanyo Denki |
| E07B111335 (ABS-E 2048) | Absolute with ABZ | 2,048 | Sanyo Denki |
| E07B151103 (ABS-E 32768) | Absolute | 32,768 | Sanyo Denki Absosyn |
| E07B151306 | Absolute with ABZ | 32,768 | Sanyo Denki |
| E10B171103 (ABS-E 131072) | Absolute | 131,072 | Sanyo Denki Absosyn |
| R11G4113A (ABS-RII) | Serial absolute | 16,384 | Sanyo Denki R series |
| R11ABS (ABS-RII) | Serial absolute | 8,192 | Sanyo Denki R series |
| ST2048 | Serial | 2,048 | Sanyo Denki |
| Sumtak AEC, AEM, REC, REM 2048 | Serial with ABZ | 2,048 | Nachi robots, Meiden |
| Sumtak LHR | ABZ with UVW | Varies | Shinko BM series |
| Kawasaki H20/M21 | Serial | 8,192 | Kawasaki robots, Sanyo Denki BL Super |
| Kawasaki HE-02 | Serial | 8,192 | Kawasaki robots |
Wire-saving encoders send U, V and W on the A, B and Z lines at power-up, then switch to normal counting.
02Faults
How these encoders usually fail
- Serial errors from damaged connectors and cables on robot arms
- Battery-related loss of position on absolute types
- Encoder board failure from coolant or heat
- Wrong startup commutation on wire-saving encoders
03Identify
Reading the label
Sanyo Denki P-series motor codes include a letter that identifies the encoder. Sumtak encoders may be marked AEC, AEM, REC or REM 2048; they are essentially the same type as the Sanyo Denki E07B111335.
04Motors
Motors fitted with these encoders
Sanyo Denki P, Q and R series and BL Super motors, Sanyo Denki 62BM080, Nachi, Kawasaki and Meiden robots and motors, NEC motors with Sanyo Denki encoders, Giddings and Lewis motors with Sumtak encoders.
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
Do you repair Kawasaki robot axis motors?
Yes, including those with H20/M21 and HE-02 serial encoders.
Is a Sumtak REM 2048 the same as a Sanyo Denki encoder?
Functionally it matches the Sanyo Denki E07B111335 type, and is tested the same way.
My robot lost its position after a power cut. Is the encoder faulty?
Often the backup battery is low. Replace it and re-master; if the alarm returns, send the motor.
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.