Overview

This document provides detailed technical specifications and product information for I.CH PM series stepper motors, primarily used in printers, scanners, stage lighting, fax machines, medical equipment, and industrial automation.

Product Identification and Coding

The motor model code includes information on motor number (A, B, C...), number of leads (4 leads for 2 phases, 6 leads for 4 phases), torque rating (e.g., 006 = 0.06 kg.cm, 150 = 1.5 kg.cm), step angle (1 = 7.5°, 2 = 15°, 3 = 18°), and motor type (gear motor, gearbox motor, hollow shaft motor). Motor dimension is indicated by the number (e.g., 25 = 25 mm diameter).

General Characteristics

• Step angles available: 7.5°, 15°, and 18°.
• Typical applications: printers, scanners, stage lighting, fax machines, medical devices, and industrial automation.
• Motor structure: Permanent Magnet (PM) stepper motors.

Specifications by Motor Series and Size

P153 Series (15 mm diameter)

• 2-phase motors with 18° step angle.
• Voltage range: 5 V to 12 V.
• Current: 0.12 A to 0.33 A.
• Holding torque: 3 to 20 g.cm.
• Stepping accuracy: ±3% to ±7%.
• Applications: printers, scanners, stage lighting.

P203 Series (20 mm diameter)

• 2-phase, 18° step angle motors.
• Voltage: 5 V to 12 V.
• Current: 0.08 A to 0.5 A.
• Holding torque: 4.3 to 81.7 g.cm.
• Stepping accuracy: ±7%.

P251 Series (25 mm diameter)

• 4-phase motors with 7.5° and 15° step angles.
• Current: 0.15 A to 0.5 A.
• Holding torque: 18 to 120 g.cm.
• Stepping accuracy: ±7%.
• Lead wires: 6 leads standard.

P352/P351 Series (35 mm diameter)

• 4-phase motors with 7.5° and 15° step angles.
• Voltage: 12 V to 24 V.
• Current: 0.22 A to 0.28 A.
• Holding torque: 16.5 to 550 g.cm.
• Stepping accuracy: less than 7.5° deviation.
• Lead wires: 6 leads standard.

P421 Series (42 mm diameter)

• 4-phase motors with 7.5° step angle.
• Voltage: 12 V to 24 V.
• Current: 0.2 A to 0.8 A.
• Holding torque: 12 to 800 g.cm.
• Stepping accuracy: less than 9.6° deviation.
• Lead wires: 6 leads standard.

P491 Series (49 mm diameter)

• 2-phase, 7.5° step angle motors.
• Voltage: 5 V.
• Current: 0.9 A.
• Holding torque: 1700 g.cm.
• Stepping accuracy: less than 14.5° deviation.
• Lead wires: 4 leads standard.

P571 Series (57 mm diameter)

• 4-phase, 7.5° step angle motors.
• Voltage: 12 V.
• Current: 0.6 A.
• Holding torque: 1500 g.cm.
• Stepping accuracy: less than 34° deviation.
• Lead wires: 6 leads standard.

Additional Features and Accessories

• Complementary products include output shafts, assembling sizes, and lead wire or terminal options.
• Standard lead wire configurations are either 4 leads (for 2-phase motors) or 6 leads (for 4-phase motors).
• Mechanical dimensions and wiring diagrams are provided for each motor series.

Key Parameters and Limitations

• Stepping accuracy varies by model but generally ranges from ±3% to ±7% for smaller motors and up to ±34° for larger motors.
• Holding torque increases with motor size and current rating.
• Rotor inertia and detent torque values are specified for each model, impacting motor responsiveness and stability.

Best Practices and Recommendations

• Select motor size and step angle based on application torque and precision requirements.
• Consider complementary accessories for integration into equipment.
• Use standard lead wire configurations for ease of installation and maintenance.