Stepper servo motor 28BH86EC024IE

36 VcompactNEMA 11

Product overview
The 28BH86EC024IE is a higher-torque 28 mm EtherCAT integrated stepper servo that combines motor, drive and 16,384-count encoder feedback in a compact closed-loop axis. It is designed for installations requiring reduced cabling and minimal footprint while maintaining precise position control.

Key highlights

• 0.21 N·m maximum output torque in a 28 mm frame
• EtherCAT and TTL communication interfaces
• 4096-line (16,384-count) encoder feedback
• 0.2–3.2 A software-adjustable current setting (factory 1.8 A)
• Non-volatile MCU FLASH parameter storage

Quick facts
Frame size: 28 mm
Body length: 85.7 mm
Max output torque: 0.21 N·m
Input voltage: 9–36 VDC
Communication: EtherCAT, TTL
Encoder feedback: 4096 lines (16,384 counts)

Full specifications
Model no.: 28BH86EC024IE
Frame size: 28 mm (NEMA 11)
Integrated body length: 85.7 mm
L size: 63.0 mm
Shaft diameter: 5 mm
Input voltage range: 9–36 VDC
Maximum output torque: 0.21 N·m
Communication: EtherCAT, TTL

Electrical, feedback & configuration
Current setting: 0.2–3.2 A software-adjustable; factory-matched motor: 1.8 A
Encoder feedback: 4096 lines (16,384 counts)
Phase resistance: 1.8 Ω ±20%
Phase inductance: 2.1 mH ±20%
Rotor inertia: Approx. 32 g·cm²
Weight: Approx. 0.32 kg
Microstep setting: Factory default 10,000; object index 0x2001
Address setting: Start address from source; automatically allocated by master
Protection: Over-voltage, under-voltage, over-current, winding open circuit and position deviation
Non-volatile storage: Configuration parameters stored in internal MCU FLASH
Operating temperature: 0°C to +40°C
Operating humidity: 20% RH to 90% RH
TTL serial settings: 115200 bps; 8 data bits; 1 stop bit; no parity

Mechanical drawing
Mechanical drawing is provided for the 28 mm EtherCAT integrated stepper servo (mechanical drawing image available on the product page).

Technical specifications

• Model: 28BH86EC024IE
• Frame size: 28 mm (NEMA 11)
• Body length: 85.7 mm
• Maximum output torque: 0.21 N·m
• Input voltage: 9–36 VDC
• Communication interfaces: EtherCAT, TTL
• Encoder: 4096 lines (16,384 counts)
• Current setting: 0.2–3.2 A (software adjustable); factory default 1.8 A
• Phase resistance: 1.8 Ω ±20%
• Phase inductance: 2.1 mH ±20%
• Rotor inertia: ~32 g·cm²
• Weight: ~0.32 kg
• Operating temperature: 0°C to +40°C
• Operating humidity: 20% RH to 90% RH