Description
Allen-Bradley MPL-B430P-MJ22AA — Kinetix AC Servo Motor
Product Overview
The MPL-B430P-MJ22AA is an industrial-grade AC permanent magnet synchronous servo motor manufactured by Allen-Bradley (Rockwell Automation) as part of the Kinetix servo platform. It is designed for high-dynamic-response motion control applications requiring precise position, speed, and torque regulation. Widely used in CNC machines, packaging lines, printing presses, robotics, and material handling systems.
Allen Bradley MPL-B430P-MJ22AA | Kinetix Inverter Duty AC Servo Motor
Model Number Decoding
| Field | Meaning |
|---|---|
| MPL | Motor series — Kinetix low-inertia AC servo motor family |
| B | Frame size — 115 mm diameter (NEMA 34 equivalent) |
| 430 | Stack length code — indicates 4.3 kW rated power |
| P | Rotor type — P = low inertia, standard configuration |
| M | Winding/speed variant — Medium speed range |
| J | Connector type — J = 22-bit high-resolution incremental encoder with multi-turn capability |
| 22 | Shaft size — 22 mm diameter output shaft |
| AA | Series revision / version — Series A (standard) |
Variants in the same family include:
- MPL-B430P-HJ22AA — High speed (5000 RPM), 2.2 kW
- MPL-B430P-SJ22AA — Standard configuration, 11 kW class
- MPL-B430P-SK22AA / SK72AA — Different connector/winding options
- MPL-B430P-MJ72AA — Higher encoder resolution variant
Core Functions
High-Precision Motion Control — The motor delivers sub-arcsecond positioning accuracy when paired with a Kinetix servo drive (e.g., 2094 or 2098 series). The built-in 22-bit encoder provides 4,194,304 counts per revolution — enabling ultra-smooth velocity profiles and jitter-free operation at low speeds.
High Torque Density — Permanent magnet synchronous design with rare-earth magnets delivers maximum torque in a compact package. Peak torque reaches approximately 3× rated torque for short durations (typically 1 second), ideal for rapid acceleration and load-handling transients.
Wide Speed Range — Continuous operating speed up to 3000–4500 RPM (depending on drive voltage and winding), with peak speeds exceeding 5000 RPM. Supports constant torque region up to base speed and constant power region above.
Integrated Feedback — The motor ships with a 22-bit incremental encoder (A/B/Z quadrature + UVW commutation) mounted on the rear shaft. Multi-turn absolute position is achievable via battery-backed counter or drive-side tracking. Feedback signals are compatible with all Kinetix servo drives.
Robust Construction — Aluminum housing with high thermal conductivity, IP65-rated (with proper cable gland), Class F insulation (155°C max winding temperature), and precision-ground output shaft with keyway and locking thread.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Rated Power | 4.3 kW (continuous) |
| Rated Torque | ~13.7 Nm (continuous) |
| Peak Torque | ~41 Nm (1 sec, typical) |
| Rated Speed | ~3000 RPM (varies by drive voltage) |
| Max Speed | 4500–5000 RPM |
| Rotor Inertia | ~0.008–0.015 kg·m² (low-inertia P-type) |
| Supply Voltage | 230VAC or 440VAC (3-phase, via servo drive) |
| Rated Current | ~11A (at 440VAC) |
| Peak Current | ~33A (short duration) |
| Encoder | 22-bit incremental, A/B/Z + UVW, 5V TTL |
| Multi-turn | Yes (battery-backed, 4096 turns) |
| Shaft Diameter | 22 mm, with keyway (DIN 6885) and locknut thread |
| Mounting | IM B5 — flange mount, 4× M6 tapped holes on 140mm bolt circle |
| Housing Material | Die-cast aluminum |
| Insulation Class | F (155°C) |
| Cooling | Self-ventilated (IC411), no external fan required |
| Protection Rating | IP65 (with correct cable entry) |
| Weight | ~5.5–6.5 kg |
| Ambient Temperature | 0°C to +40°C (continuous), -20°C to +60°C (storage) |
| Humidity | 5%–95% non-condensing |
| Certifications | CE, UL/cUL, CSA, RoHS |
Compatible Drives and System Integration
The MPL-B430P-MJ22AA is designed to work with Rockwell Automation Kinetix servo drives:
| Drive Series | Power Range | Communication |
|---|---|---|
| 2094-AMxx | 0.75–2.2 kW | EtherNet/IP, DPI |
| 2094-BMxx | 1.5–3.0 kW | EtherNet/IP, DPI |
| 2094-ACxx | 0.75–7.0 kW | EtherNet/IP, CIP Motion |
| 2094-BCxx | 1.0–15 kW | EtherNet/IP, CIP Motion |
| 2094-BMxx-MP | 1.5–3.0 kW | CIP Sync (multi-axis) |
| 2094-AMxx-MP | 0.75–2.2 kW | CIP Sync |
| 2098-xxxx | Integrated (drive+motor) | EtherNet/IP |
The motor connects to the drive via a standard servo power cable + encoder cable (or single pre-assembled cable assembly). Communication between drive and controller uses EtherNet/IP with CIP Motion protocol — fully integrated into Studio 5000 / Logix Designer for programming, tuning, and diagnostics.
Typical system architecture:
Logix Controller (1756/1734/5069) → EtherNet/IP → Kinetix Drive (2094-ACxx) → MPL-B430P-MJ22AA → Mechanical Load
Multi-axis synchronization (electronic gearing, camming, coordinated motion) is supported natively via CIP Sync on compatible drives.
