Kollmorgen H series brushless servo motor and Silverline driver

Kollmorgen H series brushless servo motor and Silverline driver

Introduction

In the field of modern industrial automation and motion control, the performance, reliability, and cost-effectiveness of servo systems are key factors determining equipment competitiveness. As a leading global supplier of motion control systems, Kollmorgen's Silverline product line has always been renowned for its high cost-effectiveness, high performance, and ease of integration. This article is based on the official product manual "Silverline Motor Catalog" of Kollmorgen, providing a comprehensive and in-depth technical analysis of its H-series brushless servo motor and matching Silverline series drive. The aim is to provide a detailed reference guide for engineers, system integrators, and procurement decision-makers.

Product Overview: H Series Brushless Servo Motor

The H series is a low-cost, high-performance brushless servo motor designed by Kollmorgen to replace traditional stepper motors and improve system performance. The core design concept is to achieve superior dynamic response, accuracy, and efficiency through servo technology without sacrificing reliability.

1.1 Core Features and Advantages

Mechanical compatibility: The motor frame size (2.3 "to 3.43" square) is fully compatible with the installation holes of NEMA 23 and NEMA 34 standard stepper motors, allowing existing devices using stepper motors to seamlessly upgrade to servo systems without changing the mechanical structure.

Wide torque range: Continuous stall torque covers 58.8 oz in to 786 oz in (0.4 N-m to 5.5 N-m), with higher peak torque, meeting diverse application needs from light load positioning to heavy load driving.

High performance rotor: Using high-energy rare earth permanent magnet materials, low rotor inertia is achieved, resulting in extremely high acceleration and deceleration, shortened setting time, and improved equipment cycle time.

Flexible feedback options: Hall effect sensors are standard for commutation, while encoders are available as optional configurations to meet the needs of closed-loop position or speed control.

Protection level: With an IP-40 sealing level, it provides basic dust protection and is suitable for common industrial environments.

1.2 Product Family and Model Naming

The H series motors are mainly divided into two sub series, corresponding to different frame sizes:

H-23X series: Corresponding to NEMA 23 size, the motor body is more compact.

H-34X series: Corresponding to NEMA 34 size, providing higher torque and power.

The naming convention for models is usually shown as "H-344-H-0200", where:

H: Series code.

3: Machine base size (3 represents a 3.4-inch frame, i.e. NEMA 34).

44: Code for the length of motor laminations, representing different iron core lengths and torque levels.

H: Winding code, representing specific electrical parameters such as voltage constant and torque constant.

0200: Feedback type code (e.g. 0200 represents standard Hall, 0600/0802 represents with different types of encoders).

Detailed technical specifications and performance parameters

The manual provides an extremely detailed parameter table, which is the core basis for motor selection. The key parameter analysis is as follows:

2.1 Electrical and Torque Performance (Taking H-34X Partial Models as Examples)

Model: Continuous stall torque (Tc), peak torque (Tp), continuous power, rated maximum speed, continuous current (Ic), peak current (Ip), torque constant (Kt), back electromotive force constant (Kb)

H-342-H 179 oz-in (1.26 N-m) 375 oz-in (2.65 N-m) 0.63 HP (470 W) 6000 RPM 12.0 A DC 28.0 A DC 14.9 oz-in/A DC 12.5 V-O-PK/KRPM

H-344-H 297 oz-in (2.10 N-m) 745 oz-in (5.26 N-m) 0.94 HP (701 W) 4050 RPM 11.7 A DC 32.6 A DC 25.4 oz-in/A DC 21.3 V-O-PK/KRPM

H-348-H 745 oz-in (5.26 N-m) 2012 oz-in (14.21 N-m) 1.10 HP (821 W) 1850 RPM 11.5 A DC 34.5 A DC 64.7 oz-in/A DC 54.3 V-O-PK/KRPM

Parameter interpretation:

Continuous and peak torque: Continuous torque determines the long-term stable operation ability of the motor, while peak torque determines the short-term overload and acceleration ability. When selecting, it is necessary to ensure that the maximum load torque applied is lower than the continuous torque, and the dynamic peak load is lower than the motor peak torque.

Torque constant (Kt): The torque generated per unit current is an important indicator for evaluating the efficiency of a motor. The higher the Kt value, the smaller the current required to generate the same torque, and the lower the copper loss of the winding.

Back electromotive force constant (Kb): The proportional relationship between the back electromotive force generated during motor rotation and the rotational speed. During high-speed operation, the back electromotive force will offset some of the power supply voltage, so Kb and the power supply voltage jointly determine the maximum theoretical speed of the motor.

2.2 Mechanical and Thermal Properties

The rotor inertia (Jm): H-342-H is 0.00679 oz-in-s ². Low inertia is the foundation for achieving rapid response. The matching of load inertia and motor rotor inertia (usually recommended ratio within 10:1) is crucial for system stability.