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YOKOGAWA SGMPH-01A1E41D
Product Introduction:
The SGMPH-01A1E41D is a compact AC servo motor from Yokogawa’s Sigma-7 series, designed for high-precision motion control applications. The SGMPH designation indicates a small-frame servo motor with an absolute encoder (E41) and specific winding/connection configuration. This motor delivers high torque density in a small package, ideal for pick-and-place, packaging, semiconductor handling, and precision positioning applications.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Motor Type | AC Servo Motor (Permanent Magnet Synchronous) |
| Frame Size | SGMPH (Small frame, approx. 70 mm square flange) |
| Rated Output Power | 100 W (0.1 kW) |
| Rated Torque | 0.32 N·m (continuous) |
| Peak Torque | 0.96 N·m |
| Rated Speed | 3000 rpm |
| Encoder Resolution | 17-bit absolute (131,072 pulses/rev) |
| Encoder Type | Optical absolute, multi-turn (E41 = 17-bit, battery-backed) |
| Rated Voltage | 200 V AC (3-phase) |
| Insulation Class | Class F (155°C) |
| Protection Rating | IP65 (with connector), IP40 (without connector) |
| Weight | Approx. 0.7 kg (motor only) |
| Brake | With electromagnetic brake (holding torque: 2.0 N·m) |
| Shaft | Keyed shaft, 6 mm diameter |
| Connector | MS connector (MIL-C-5015 type) |
| Cooling | Self-cooling (fanless) |
| Ambient Temperature | 0°C to +40°C (operating), -20°C to +60°C (storage) |
| Model Decoding | 01 = Frame, A1 = Winding code, E41 = Absolute encoder 17-bit, D = With brake |
Functional Features:
- 17-bit absolute multi-turn encoder — position retained after power-off, no homing required
- High torque-to-inertia ratio for fast acceleration/deceleration
- Electromagnetic brake for vertical axis holding without power
- Low cogging torque for smooth low-speed operation
- Compact design — fits in space-constrained machine layouts
- Compatible with SGD7S and SGD7E servo drives
Material Composition:
- Stator/Rotor Core: Silicon steel laminations (0.2 mm thickness)
- Magnets: Neodymium (NdFeB) rare-earth permanent magnets
- Housing: Aluminum die-cast with anodized finish
- Shaft: Stainless steel (SUS303)
- Bearings: Sealed ball bearings (NSK/NTN grade)
- Windings: Class F insulation (polyimide coating)
Structural Features:
- Square flange mounting: 70 mm × 70 mm with 4 mounting holes
- Keyed shaft with flat keyway for timing pulley or coupling attachment
- MS military-spec connector for motor power and encoder signals
- Integrated electromagnetic brake — 24 V DC actuation
Working Principle:
The motor is a 3-phase permanent magnet synchronous motor (PMSM). The servo drive supplies 3-phase sinusoidal current to the stator windings, creating a rotating magnetic field that locks with the permanent magnet rotor field. The absolute encoder provides real-time position feedback to the drive, enabling closed-loop vector control with ±1 arc-second positioning accuracy. The brake is a spring-applied, electrically-released electromagnetic brake that holds the shaft when de-energized.
Advantages & Highlights:
- Absolute encoder eliminates homing procedure — saves cycle time
- 0.32 N·m continuous torque in 70 mm frame — exceptional power density
- IP65 rating — resistant to dust and water jets
- Low vibration and noise — suitable for cleanroom environments
- Wide speed range: 0–3000 rpm with constant torque region up to rated speed
Applicable Industries:
- Semiconductor Manufacturing Equipment
- Electronics Assembly / Pick-and-Place Machines
- Packaging Machinery
- Printing & Converting Equipment
- Medical Device Manufacturing
- Laboratory Automation
Installation Requirements:
- Mount on rigid flat surface using 4× M5 mounting screws, torque 1.5 N·m
- Use flexible coupling — allowable misalignment: angular ≤ 1°, parallel ≤ 0.5 mm, axial ≤ 0.5 mm
- Connect MS connector with torque 3.0 N·m — do not pull on cables
- Ground motor housing to equipment ground with ≤ 0.1 Ω resistance
- Ensure ambient temperature ≤ 40°C or derate output per motor curve
Usage Precautions:
- Do not apply axial or radial loads exceeding specifications — will damage bearings
- Do not disassemble motor — internal magnets are brittle and can shatter
- Brake voltage must be 24 V DC ±10% — overvoltage will burn brake coil
- Encoder battery life: approx. 10 years — replace motor if battery expires (position loss occurs)
- Do not exceed 3000 rpm — mechanical damage to rotor will occur
- Use servo drive with auto-tuning function for optimal performance
