R88M-U75030VA-S1 - Omron OMNUC U-series 750 W AC servo motor

Documented AC servo-motor role for R88M-U75030VA-S1, with source-backed evidence and explicit installation boundaries.

Documented function

Rebuilt from individual evidence

System position

Unknown: Evidence boundary

Omron lists R88M-U75030VA-S1 as an OMNUC U-series 750 W AC servo motor for 200 V service.

The exact reference is listed with an incremental encoder, a keyed straight shaft, and no brake.

A technical listing reports 3000 RPM and 4.4 A for the 750 W motor.

The motor sits downstream of its servo drive and upstream of the machine axis or load.

The incremental encoder supplies rotor feedback to the servo control loop.

Unknown: The installed servo drive, feedback wiring, firmware, machine load, and site-specific compatibility are not established by the captured sources.

Exact reference: R88M-U75030VA-S1
Category: Motors / Servo
Evidence checked: 2026-09-12

System role

This section explains what the product does and where it acts in the surrounding system.

Function: Drives a controlled machine axis with the documented servo power and speed.
System position: Sits downstream of its servo drive and upstream of the machine axis or load.
Upstream / inputs: Receives electrical power and motion commands from the matched servo drive.
Downstream / outputs: Delivers rotary torque and incremental encoder feedback to the servo system.
Limitations: Unknown: The installed servo drive, feedback wiring, firmware, machine load, and site-specific compatibility are not established by the captured sources.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

Omron lists R88M-U75030VA-S1 as an OMNUC U-series 750 W AC servo motor for 200 V service.
Confidence: high
- www.fa.omron.co.jp — retrieved 2026-09-12; high confidence
- edata.omron.com.au — retrieved 2026-09-12; high confidence
The exact reference is listed with an incremental encoder, a keyed straight shaft, and no brake.
Confidence: high
- www.fa.omron.co.jp — retrieved 2026-09-12; high confidence
- www.dosupply.com — retrieved 2026-09-12; medium confidence
A technical listing reports 3000 RPM and 4.4 A for the 750 W motor.
Confidence: medium
- www.dosupply.com — retrieved 2026-09-12; medium confidence

Inferences

The motor sits downstream of its servo drive and upstream of the machine axis or load.
Confidence: medium
Rationale: The exact product is documented as an AC servo motor with rated power and speed, placing it on the mechanical output side of a servo drive.
- www.fa.omron.co.jp — retrieved 2026-09-12; high confidence
- edata.omron.com.au — retrieved 2026-09-12; high confidence
- www.dosupply.com — retrieved 2026-09-12; medium confidence
The incremental encoder supplies rotor feedback to the servo control loop.
Confidence: medium
Rationale: The manufacturer lineup and technical listing identify the encoder arrangement for this controlled motor.
- www.fa.omron.co.jp — retrieved 2026-09-12; high confidence
- www.dosupply.com — retrieved 2026-09-12; medium confidence

Unknowns

Unknown: The installed servo drive, feedback wiring, firmware, machine load, and site-specific compatibility are not established by the captured sources.
Confidence: low
Missing evidence: The installed servo drive, feedback wiring, firmware, machine load, and site-specific compatibility are not established by the captured sources.

System position diagram

Diagram showing R88M-U75030VA-S1 between Matched servo drive and Machine axis or load. — System position of R88M-U75030VA-S1 from the captured evidence.

View Mermaid source

flowchart LR
  upstream[Matched servo drive] --> unit[R88M-U75030VA-S1]
  unit --> downstream[Machine axis or load]

View diagram labels

Nodes: Matched servo drive; R88M-U75030VA-S1; Machine axis or load
Edges: Upstream control reaches the product; The product provides the documented downstream function

Next action

Decision: The captured evidence supports the documented AC servo-motor role for R88M-U75030VA-S1; verify the installed system before replacement.

Next action: Match the exact reference, controller or drive pairing, feedback arrangement, and site conditions against the cited documents before sourcing.

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