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 Alpha I8 / A8
Fanuc Pulsecoder Alpha I8 and A8 repair, test and alignment
Pulsecoder Alpha I8 / A8 is a Fanuc serial encoder with 8,192 counts per turn. We test it, repair or replace it and align it to the rotor. Found on: Smaller Fanuc Alpha motors with built-in encoder. 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 Alpha I8 / A8 at a glance
| Device | Pulsecoder Alpha I8 / A8 |
|---|---|
| Brand family | Fanuc |
| Type and format | Fanuc serial |
| Counts | 8,192 counts per turn |
| Found on | Smaller Fanuc Alpha motors with built-in encoder |
| Connector | Two-row AMP D3100 connector on some built-in types |
| Pole setting for alignment | 8 pole as standard |
The Alpha I8 and A8 give 8,192 counts per turn and are the built-in encoders of smaller Alpha motors.
02Faults
How Pulsecoder Alpha I8 / A8 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 A
- Fanuc Pulsecoder Alpha 1000A
- Fanuc Pulsecoder Alpha 1000iA
- Fanuc Pulsecoder Alpha 1000iI
- Fanuc Pulsecoder Alpha A64
- 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 Alpha I8 / A8 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.
What connector do they use?
Some built-in Alpha 8 encoders use a two-row AMP D3100 connector.
Are I8 and A8 interchangeable?
They share the same count, but we match the exact type to the motor.
What should I send for a Pulsecoder Alpha I8 / A8 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.