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.
Fanuc · Pulsecoder A
Fanuc Pulsecoder A repair, test and alignment
Pulsecoder A is a Fanuc serial encoder with 1,048,576 counts. We test it, repair or replace it and align it to the rotor. Found on: Earlier Fanuc servo motors fitted with the first-generation Pulsecoder style. Star Automations is an independent multi-brand repair company and is not an OEM service centre.
- 25+years of servo repair, since 2000
- 3,000+customers across India
- 100+servo brands covered by our universal servo motor test equipment
- 5sites: Puducherry, Chennai, Bengaluru, Hyderabad, Delhi
- Same dayemergency repair option*
*Where the fault and parts allow. Every repaired unit returns with a printed test report.
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
01Facts
Pulsecoder A at a glance
| Device | Pulsecoder A |
|---|---|
| Brand family | Fanuc |
| Type and format | Fanuc serial |
| Counts | 1,048,576 |
| Found on | Earlier Fanuc servo motors fitted with the first-generation Pulsecoder style |
| Connector | 17 or 19 pin round MS connector, or DB15 |
| Pole setting for alignment | 8 pole as standard, 6 pole also found |
The Pulsecoder A, B, B2 and C are the earlier Fanuc encoder styles. They report a serial position count to the drive and also carry a commutation code that is used to line up the encoder with the rotor.
02Faults
How Pulsecoder A encoders usually fail
- No data received from the encoder at power-up, usually a cable, connector or encoder board fault
- Internal error flag set by the encoder, which normally means repair or replacement
- Battery alarm or lost absolute position after a backup supply fault
- Overheat flag stuck on after thermal line or board damage
- Count that does not match one revolution, or commutation that no longer lines up with the rotor
03Process
How the repair is done
Receive and identify
We read the nameplate and encoder label and confirm the exact type.
Test
Count per turn, data status, alarm flags and, where fitted, incremental lines are checked on the bench.
Repair or replace
Board, connector or sensor faults are repaired; a matched encoder is fitted where repair is not sensible.
Align
Commutation is set to the rotor and checked at every pole pair using the electrical angle.
Verify and report
The motor is run on the bench and the readings are recorded in the report.
See encoder alignment, memory programming and replacement.
04Related
Other Fanuc encoders we repair
- Fanuc ABS and incremental
- Fanuc Pulsecoder Alpha 1000A
- Fanuc Pulsecoder Alpha 1000iA
- Fanuc Pulsecoder Alpha 1000iI
- Fanuc Pulsecoder Alpha A64
- Fanuc Pulsecoder Alpha I8 and A8
- Fanuc Pulsecoder Alpha I64
- Fanuc Pulsecoder Alpha I64i and A64i
- Fanuc Pulsecoder B
- Fanuc Pulsecoder B2
- Fanuc Pulsecoder Beta A64B
- Fanuc Pulsecoder Beta A128i
- Fanuc Pulsecoder Beta I32B and A32B
- Fanuc Pulsecoder Beta I64B
- Fanuc Pulsecoder C
- All Fanuc Pulsecoder
05FAQ
Questions
Can you repair a Pulsecoder A encoder?
Yes. We test the position count and status, repair or replace the encoder, align it to the rotor and run the motor. We repair Fanuc units; Star Automations is an independent multi-brand repair company and is not an OEM service centre.
Is the Pulsecoder A the same as the Alpha encoder?
No. The Pulsecoder A belongs to the earlier style and the Alpha series is a later generation with a different case and counts per turn. We identify the exact type from the label before we test.
How do I identify a Fanuc Pulsecoder?
The label normally reads Pulsecoder A, Pulsecoder C, Pulsecoder Alpha A64 and so on. If it does not, the part number starting with A860 identifies it.
What should I send for a Pulsecoder A enquiry?
A clear photo of the motor nameplate and, if the cover is off, the encoder label. You can send the motor or only the encoder.
06Enquiry
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.
→How it works
From nameplate photo to a tested motor in 7 steps
One route for servo motors, encoders and drives. You see the price before any work starts, and the report before the unit leaves our bench.
- 1 · Nameplate photoSend it on WhatsApp or the form
- 2 · Repairable? QuoteUsually the same working day
- 3 · Courier or pickupThe unit reaches our bench
- 4 · Bench diagnosisInsulation, windings, brake, encoder
- 5 · RepairFailed parts, bearings, seals, brake
- 6 · Align and run-testEncoder aligned; no-load and load run
- 7 · Report and dispatchPrinted test report with the unit
- Line down?Servo Swap ships a tested unit first. How Servo Swap works
EmergencySame day*
Urgent3 working days
Standard7 working days
*Where the fault and parts allow. Turnaround counts from when the unit reaches our bench and the quote is approved.