Product Description
The 1Z49101 is a 1.5kW (2.0HP) AC servo motor from Reliance Electric (now part of ABB/Baldor), engineered for high‑precision motion control in industrial automation. It features a compact footprint, integrated holding brake, and high‑resolution encoder feedback. The model is discontinued by the OEM, with refurbished and surplus units available for maintenance, retrofitting, and replacement of legacy servo systems.
Model Number Interpretation
1Z: Servo motor series, brushless AC, high‑precision, with brake.
49: Frame size and winding configuration for 1.5kW power class.
101: Specific model variant, includes 24VDC holding brake and standard encoder resolution.
Technical Specifications
Rated Power: 1.5kW / 2.0HP.
Rated Speed: 1500 RPM.
Rated Current: 5.5A (continuous).
Voltage: 200–240VAC three‑phase (matching Reliance servo drives).
Encoder: Incremental, high‑resolution (standard 2500 ppr, optional higher).
Brake: Integrated 24VDC holding brake, static torque rated for motor holding.
Enclosure: IP54 (dust‑protected, splash‑resistant), suitable for indoor industrial use.
Shaft: Standard keyed shaft, compatible with industrial couplings.
Weight: 11.3kg (25lbs).
Ambient Temperature: 0–40°C (operating), -20–60°C (storage).
Insulation Class: Class F (155°C).
Interface and Communication Configuration
Motor electrical interface includes a power connector (U/V/W for three‑phase AC) and a brake connector (24VDC power for holding brake). A separate encoder connector provides feedback signals (A/B/Z phases, differential) to the servo drive. No onboard communication ports; motion control and parameter setup are managed via the paired Reliance servo drive (e.g., Vectrive, BRU‑500 series) using drive‑level communication (RS‑232/422, or optional fieldbus modules).
Core Functions
Delivers high‑precision speed, position, and torque control for dynamic motion applications. The integrated holding brake secures the motor shaft during power loss or idle states, preventing load drift. High torque density enables compact machine design. Low cogging torque ensures smooth, quiet operation at low speeds. The IP54 enclosure protects against dust and splashing liquids in typical industrial environments.
Application Scenarios
Ideal for precision automation machinery, including CNC machine tools, robotic arms, packaging equipment, material handling systems, and assembly lines. Suited for applications requiring accurate positioning, rapid acceleration/deceleration, and consistent torque—such as conveyors, indexing tables, and spindle drives. Commonly used to replace legacy Reliance 1Z‑series motors in 200–240VAC servo systems.
Usage and Maintenance Instructions
Mount the motor securely to a rigid base, ensuring shaft alignment with the load to avoid mechanical stress. Connect power, brake, and encoder cables per wiring diagrams; use shielded cables for encoder signals to reduce noise. Apply 24VDC to the brake only when the motor is stationary; avoid frequent brake cycling. During operation, monitor motor temperature, vibration, and noise; keep ambient temperature within 0–40°C. Periodically inspect cables and connectors for wear, corrosion, or damage. Lubricate bearings per manufacturer guidelines (typically every 10,000 hours). Disconnect all power before maintenance or inspection. Store spare motors in a cool, dry, dust‑free environment with the brake released (if possible).
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