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Product Introduction:
The DH102A-22-1210 is a high-torque servo motor from the DH product line, featuring a 102 mm flange with enhanced torque output for demanding motion control applications. The “A” suffix indicates a modified variant. Configuration code “1210” defines the full feature set.
Technical Specifications:
| Parameter | Value |
|---|---|
| Frame Size / Flange | 102 mm (4.02 in) |
| Length Code | A = Extended/modified stack |
| Winding Code | 22 — Standard torque winding |
| Configuration Code | 1210 |
| Configuration Breakdown (1210) | 1 = With holding brake, 2 = Multi-turn absolute encoder, 1 = Standard connector, 0 = Keyed shaft |
| Continuous Torque | 5.5 Nm (48.7 lb-in) |
| Peak Torque | 16.5 Nm (146.0 lb-in) |
| Max Speed (Continuous) | 3,000 RPM |
| Peak Speed | 4,500 RPM |
| Rated Power (Continuous) | 1.73 kW (2.32 HP) |
| Peak Power | 5.18 kW (6.95 HP) |
| Voltage Rating | 200–480 VAC (3-Phase) |
| Encoder | Multi-turn absolute optical — 128 cycles (4,096 counts/rev × 128 = 524,288 counts/rev) |
| Holding Brake | Yes — 24 VDC electromagnetic brake |
| Shaft Type | Keyed — DIN 6885 keyway, 28 mm diameter |
| IP Rating | IP65 |
| Insulation Class | Class F (155°C) |
| Weight | Approx. 5.5 kg (12.1 lbs) |
Structural Features:
- 102 mm aluminum alloy flange — Higher rigidity than D series.
- Multi-turn absolute encoder — Retains position after power-off; no homing required after battery change.
- Electromagnetic holding brake — 24 VDC, spring-applied.
- Keyed shaft (28 mm, DIN 6885) — Standard coupling interface.
- Optimized cooling fins on housing — Passive convection cooling for continuous operation.
Working Principle:
Three-phase stator excitation drives NdFeB permanent magnet rotor. The multi-turn absolute encoder uses a coded glass disc to provide 524,288 unique positions per revolution with battery-backed memory. Position is retained across power cycles. The brake uses a spring-loaded friction disc released by 24 VDC.
Key Advantages:
- Multi-turn absolute feedback — Eliminates homing sequence; position known immediately on power-up.
- High torque density: 5.5 Nm in 102 mm frame — Superior to D102 series.
- Holding brake included — Vertical axis hold without external brake.
- Keyed shaft — Simple, backlash-free coupling with standard components.
Applicable Industries:
CNC machine axes (X/Y/Z), Printing press drives, Injection molding, Material handling conveyors, Robotics (shoulder/elbow joints).
Installation Requirements:
- Mount on 102 mm bolt circle (4× M6 bolts).
- Keyway dimensions: 8 mm wide × 4 mm deep × 28 mm shaft diameter.
- Encoder battery: CR2032 lithium — replace every 3 years or when position loss occurs.
- Brake wiring: 24 VDC, ≥ 0.5 A; install flyback diode.
Usage Precautions:
- Absolute encoder battery must be replaced before expiration — position loss will occur.
- Do not exceed 4,500 RPM — encoder and bearing limits.
- Brake must be energized before any rotation — dry friction damage occurs if run with brake engaged.
- Ambient temperature: 0°C to +40°C; derate torque 1.5%/°C above 40°C.
