SGDH-05DE - Yaskawa SGDH-05DE 500 W Sigma-II servo drive

Evidence-backed servo drive role for SGDH-05DE, with explicit installation boundaries.

Documented function

Rebuilt from individual evidence

System position

Unknown: Evidence boundary

Yaskawa identifies SGDH-05DE as a Sigma-II amplifier for three-phase 400 V input and 500 W capacity.

The Sigma-II data sheet specifies serial encoder feedback and a three-phase output stage for the SGDH drive family.

The SGDH documentation places the servo drive between control connections and the connected servomotor.

The drive sits between the upstream controller and the matched servo motor in the documented axis.

The drive converts controller references into controlled electrical output for the matched servo motor.

Unknown: The installed motor pairing, control mode, firmware, and machine load are not established by the captured sources.

Exact reference: SGDH-05DE
Category: Drives / VFD
Evidence checked: 2026-09-12

System role

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

Function: Controls a matched Sigma-II servomotor from the 400 V servo drive power stage.
System position: Sits between the upstream controller and matched servomotor in the three-phase 400 V servo axis.
Upstream / inputs: Receives controller commands and serial encoder feedback through the SGDH interfaces.
Downstream / outputs: Supplies controlled three-phase electrical output to the matched servomotor.
Limitations: Unknown: The installed motor pairing, control mode, firmware, and machine load are not established by the captured sources.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

Yaskawa identifies SGDH-05DE as a Sigma-II amplifier for three-phase 400 V input and 500 W capacity.
Confidence: high
- files.omron.eu — retrieved 2026-09-12; high confidence
- www.yaskawa.com — retrieved 2026-09-12; high confidence
The Sigma-II data sheet specifies serial encoder feedback and a three-phase output stage for the SGDH drive family.
Confidence: high
- files.omron.eu — retrieved 2026-09-12; high confidence
The SGDH documentation places the servo drive between control connections and the connected servomotor.
Confidence: high
- files.omron.eu — retrieved 2026-09-12; high confidence

Inferences

The drive sits between the upstream controller and the matched servo motor in the documented axis.
Confidence: medium
Rationale: The documented product type, interfaces, and motor or controller relationships support this system position.
- files.omron.eu — retrieved 2026-09-12; high confidence
- www.yaskawa.com — retrieved 2026-09-12; high confidence
The drive converts controller references into controlled electrical output for the matched servo motor.
Confidence: medium
Rationale: The documented control interfaces and motor or feedback connections support this signal and power path.
- files.omron.eu — retrieved 2026-09-12; high confidence

Unknowns

Unknown: The installed motor pairing, control mode, firmware, and machine load are not established by the captured sources.
Confidence: low
Missing evidence: The installed motor pairing, control mode, firmware, and machine load are not established by the captured sources.

System position diagram

Diagram showing SGDH-05DE between a motion controller and a matched servo motor. — System position of SGDH-05DE from the captured evidence.

View Mermaid source

flowchart LR
  controller[Motion controller] --> unit[SGDH-05DE]
  unit --> motor[Matched servo motor]

View diagram labels

Nodes: Motion controller; SGDH-05DE; Matched servo motor
Edges: Upstream control reaches the product; The product provides the documented downstream function

Next action

Decision: The captured evidence supports the documented servo drive role for SGDH-05DE; verify the installed system before replacement.

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

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