RELIANCE 45C992: High-Performance AC Brushless Servomotor

Description

Application Scenarios:

In a high-speed bottling line, a rotary indexing table must position hundreds of bottles per minute with micron-level accuracy for filling and capping. A RELIANCE ELECTRIC 45C992​ servo motor, coupled with an Allen-Bradley 1398 servo drive, is tasked with this critical motion profile. The motor’s high torque-to-inertia ratio allows for extremely rapid acceleration and deceleration, while its precision feedback device provides real-time position data to the drive, creating a tightly controlled closed-loop system. This ensures each bottle stops at the exact correct location every time, maximizing line speed and minimizing product waste. The motor’s robust, sealed construction withstands the washdown environments typical in packaging, directly addressing the key pain points of precision, speed, and reliability in harsh conditions.

Technical Principles and Innovative Values:

Innovation Point 1: Advanced Magnetic Circuit Design for High Dynamic Response.​ The RELIANCE ELECTRIC 45C992​ utilizes high-grade permanent magnets (often rare-earth) and an optimized stator design to achieve a very high torque-to-inertia ratio. This means the motor rotor can accelerate and decelerate very quickly, providing the fast, responsive performance essential for high-cycle applications like pick-and-place or flying cutoffs, directly improving machine throughput.

Innovation Point 2: Integrated High-Resolution Feedback for Closed-Loop Precision.​ The motor is equipped with an integrated, high-accuracy feedback device, such as a resolver or encoder. This device provides the servo drive with real-time, precise data on the rotor’s angular position and speed. This closed-loop feedback is fundamental, allowing the drive to make micro-corrections thousands of times per second to maintain exact position or speed despite varying load conditions, ensuring consistent product quality.

Innovation Point 3: Robust Industrial Construction for Reliability.​ Unlike standard motors, the 45C992​ is built for the harsh realities of the factory floor. It typically features a sealed housing to protect against dust and moisture ingress, high-quality bearings rated for long life under dynamic loads, and ruggedized shaft and connector designs. This construction minimizes downtime due to motor failure, offering superior reliability in demanding 24/7 production environments.

Application Cases and Industry Value:

A corrugated box manufacturer was struggling with waste on a rotary die-cutter. Inaccuracies in the feed length, caused by a sluggish, low-performance motor, led to mis-cuts and material waste exceeding 5%. They retrofitted the main feed axis with a RELIANCE ELECTRIC 45C992​ servo motor and a modern digital drive. The combination provided the precise, high-torque movement needed to accurately advance the heavy corrugated board. The immediate result was a dramatic reduction in mis-cuts. Within months, material waste fell to under 0.8%, and the line speed could be increased by 15% due to the motor’s faster response. The plant manager reported, “The 45C992​ motor and drive system transformed our most problematic machine. The precision paid for itself in reduced waste alone, and the increased throughput was a major bonus.” This demonstrates the motor’s direct value in reducing operational costs, improving product quality, and boosting overall equipment effectiveness (OEE).

Related Product Combination Solutions:

ALLEN-BRADLEY 1398-DDM-005:​ A Digital Drive Module. This is the intelligent servo drive/amplifier that provides the controlled power to the 45C992​ motor, closing the control loop using the motor’s feedback.

ALLEN-BRADLEY 1398-SDM-020:​ A specific Servo Drive Module chassis. This houses the drive electronics that control the 45C992​ motor.

RELIANCE ELECTRIC 57C Frameless Motor Kit:​ A frameless motor component. This represents another style of motor from Reliance, where the 45C992​ is a complete housed motor, and frameless kits are integrated directly into machinery.

ALLEN-BRADLEY 2090-Serial Cable:​ A feedback cable. A specific, shielded cable designed to reliably connect the feedback device in the 45C992​ motor to the servo drive, critical for signal integrity.

ALLEN-BRADLEY 1398-PDM-​ Series: Positioning Drive Modules. For applications where the 45C992​ is used in a positioning system, these modules provide the control intelligence.

RELIANCE ELECTRIC B-609 Bulletin 609 Adjustable Speed Drive:​ An AC drive. While for different motor types, it’s part of the broader Reliance motion control portfolio, whereas the 45C992​ is specifically for high-performance servo applications.

Kinetix 5700 Servo Drive:​ A modern Rockwell Automation servo drive. While newer than the 1398 series, it represents the evolution of technology that would control a similar high-performance servo motor.

Installation, Maintenance, and Full-Cycle Support:

Proper installation of the RELIANCE ELECTRIC 45C992​ is critical for performance and longevity. It requires precise mechanical alignment to the driven load (using a laser alignment tool is recommended) to prevent premature bearing wear. Electrical connection must follow the drive manufacturer’s instructions precisely, ensuring the motor power leads (U, V, W) and the feedback cable are routed separately from high-voltage power lines to avoid electrical noise. The motor must be properly grounded. Adequate cooling is essential; ensure the motor’s cooling fins are clean and unobstructed.

Routine maintenance is primarily preventive. This includes periodic checks for unusual vibration or noise, verifying tight electrical connections, and ensuring the feedback connector remains secure. The primary wear items are the bearings, which have a finite life under load. Monitoring motor temperature and listening for bearing noise can signal the need for proactive replacement during planned downtime. If a motor fails, it is a modular replacement. Ensure the replacement 45C992​ has compatible electrical specs and feedback type. We supply fully tested and performance-verified RELIANCE ELECTRIC 45C992​ servo motors. Our technical support can assist with compatibility confirmation and provide guidance on mechanical installation best practices to ensure you get the full performance and service life from your motion system.

Contact us for your RELIANCE 45C992 servo motor requirements and for expert motion system support.