IC42 (IO Closed Loop 42mm) Integrated Closed-Loop Stepper System Product Manual

The IC42 is an integrated closed-loop stepper system with a 42mm frame size, combining a 42 closed-loop stepper motor, drive circuit and encoder in one unit. It features step-loss prevention, high torque at high speed, low vibration and easy installation, making it ideal for equipment miniaturization and high-precision positioning applications.

I. Core Overview

1. Definition The IC42 is a 3-in-1 pulse closed-loop stepper system integrating motor, drive and encoder with a 42mm frame. Equipped with a 32-bit DSP/ARM chip and vector closed-loop algorithm, it enables real-time position feedback via encoder to achieve precise position, speed and current three-loop control.

2. Core Advantages Step-loss free operation, minimal torque decay at high speed, low noise during low-speed running, low heat generation, simplified wiring, easy installation. It combines the low cost of stepper motors with the high precision of servo systems.

3. Typical Applications 3C manufacturing equipment, automatic labeling machines, small robotic arms, precision motion stages, semiconductor testing equipment, automated instruments and meters, etc.

II. Key Technical Parameters


Item Specification
Motor Type Two-phase hybrid 42 closed-loop stepper motor, step angle 1.8°
Holding Torque 0.4~0.8N·m (range of regular models)
Drive Core 32-bit DSP/ARM chip, full-bridge PWM drive
Phase Current Rated 0.8~2.5A/phase, peak up to 3.2A/phase
Input Voltage DC 24~48V
Encoder 1000-line incremental magnetic encoder (equivalent to 4000PPR)
Control Signal Pulse+Direction/Double Pulse modes, support differential/single-ended input with optocoupler isolation
Max Pulse Response Frequency 200kHz
Microstepping Range Adjustable from 200 to 51200 Pulse/r
Protection Functions Overcurrent, overvoltage, undervoltage, overheating and position deviation protection

III. System Component Features

(1) 42 Closed-Loop Motor (Standard with IC42)

- Structure The stator adopts a two-phase winding design with a permanent magnet built into the rotor. Equipped with a 1000-line incremental magnetic encoder for real-time rotor position feedback, the drive dynamically corrects position errors through closed-loop algorithms.

- Performance Stable operation without jitter at low speed, significant improvement in torque output at high speed, lower heat generation compared with traditional open-loop stepper motors. The installation dimensions are fully compatible with standard 42 open-loop stepper motors, allowing direct replacement and upgrade.

(2) Built-in Drive

- Control Modes Supports three modes: position control (pulse command), speed control (analog/communication command) and torque control, meeting the requirements of different application scenarios.

- Interface Configuration Includes power interface, differential pulse (DIR/PUL) interface, enable (ENA) interface, alarm (ALM) interface and encoder feedback interface. Supports quick setting of microstepping, current, motion direction and other parameters via DIP switches or buttons.

- Optimized Algorithms Equipped with vector control, intermediate frequency vibration suppression and digital filtering algorithms, effectively reducing motor running noise and vibration, and improving motion smoothness.

IV. Model Selection Recommendations (Matching Load Torque and Power Supply)


Load Torque Range Recommended Model Application Scenarios Recommended Supply Voltage
0.4~0.5N·m IC42-04/IC42EC04 3C small assembly equipment, desktop labeling machines DC 24~48V
0.6~0.72N·m IC42-06/IC42EC06 Small robotic arm joints, precision sliding tables DC 24~48V
0.7~0.8N·m IC42-08/IC42EC08 Automated instrument positioning axes, small CNC feed axes DC 36~48V

Selection Principle For light-load scenarios, prioritize small-torque models to reduce cost and energy consumption; for heavy-load or high-speed operation scenarios, match large-torque models with high-voltage power supply to ensure stable torque output.

V. Universal DIP Switch Settings

The IC42 drive is equipped with 8-bit DIP switches (SW1-SW8), divided into three parts: microstepping setting (SW1-SW4), current setting (SW5-SW6) and direction/control mode setting (SW7-SW8). All DIP switch adjustments must be performed with power off.

1. Microstepping Setting (SW1-SW4) — Balancing Positioning Precision and Response Speed


Microstepping Value Pulses per Revolution (Pulse/r) SW1 SW2 SW3 SW4 Application Scenarios
200 200 OFF OFF OFF OFF High-speed and low-precision feeding/transmission scenarios
400 400 ON OFF OFF OFF Scenarios balancing regular speed and precision
1000 1000 OFF ON OFF OFF Mainstream positioning scenarios (Recommended)
2000 2000 ON ON OFF OFF High-precision positioning stages
5000 5000 OFF OFF ON OFF High-resolution micro-displacement scenarios
10000 10000 ON OFF ON OFF Ultra-high-precision testing equipment
16000 16000 OFF ON ON OFF Precision semiconductor processing equipment
51200 51200 ON ON ON ON Nano-level micro-positioning scenarios

Recommended Common Settings 1000~2000 Pulse/r, balancing positioning precision and system response speed.

2. Current Setting (SW5-SW6) — Matching Motor Rated Current to Reduce Heat Generation


Set Current SW5 SW6 Matching Recommendations
0.8A OFF OFF Suitable for IC42-04 under light-load conditions to reduce motor temperature rise
1.6A ON OFF Rated current configuration for IC42-04, ensuring basic torque output
2.0A OFF ON Rated current configuration for IC42-06, suitable for medium-load scenarios
2.5A ON ON Rated current configuration for IC42-08, must be used with 36~48V power supply

Setting Recommendations Prioritize configuration according to motor rated current; for light-load conditions, reduce the current level appropriately to lower heat generation and energy consumption.

3. Direction/Control Mode Setting (SW7-SW8)


Function Type Function Description SW7 SW8
Motion Direction Forward rotation (default direction) OFF /
Reverse rotation ON /
Control Mode Pulse+Direction (Recommended) / OFF
Double Pulse (independent control of forward/reverse pulses) / ON

VI. Installation and Operation Guidelines

1. Torque Matching Select the corresponding model according to the actual load torque to avoid step loss or motor burnout caused by under-matching.

2. Power Supply Requirements It is recommended to use a DC 24~48V power supply; for heavy-load and large-torque models, a 36~48V voltage is recommended to improve torque output at high speed.

3. Microstepping Configuration Choose high microstepping for high-precision positioning scenarios and low microstepping for high-speed motion scenarios to balance precision and response speed.

4. Heat Dissipation Reserve sufficient heat dissipation space during install.

Shenzhen Zero one(Lingyi) Intelligent Control Co., Ltd. was founded in 2020 by Willson Lin, an engineer with many years of research experience in stepper motor drivers. The company's business scope covers the following areas: technology development and sales of drivers, motors, motion control systems and components, and special control systems; technology development and sales of robot control systems, embedded software and hardware, stepper motors and their drivers, DC brushless motors and their drivers, and AC servo control motors and their drivers; switching power supplies, hardware logic control, etc. Currently, Zero One Intelligent Control provides stable stepper motors and drivers to numerous technology companies!