EtherCAT Closed-Loop Stepper Motor with 3.5 N·m Holding Torque

The iESSL60-36-35-17BC-EC is an EtherCAT-only integrated stepper motor with 3.5 N·m holding torque, a 5.0 A phase current, and a 17-bit absolute encoder. This variant communicates exclusively over EtherCAT, which makes it straightforward to add to an existing EtherCAT motion network.

Single-Bus Simplicity

With only EtherCAT on board, the network configuration is predictable: one bus interface, one set of object dictionary entries, no address conflicts with a second protocol. That simplifies commissioning on machines that already standardize on EtherCAT.

Closed-Loop Position Control

The closed loop, fed by the 17-bit absolute encoder, corrects step loss in real time. The absolute position also removes the homing sequence after power-on, which reduces restart time on production equipment.

Specifications

• Frame size: 60 mm
• Holding torque: 3.5 N·m
• Supply voltage: 36 VDC
• Rated current: 5.0 A
• Fieldbus: EtherCAT
• Encoder: 17-bit absolute
• Control: closed-loop

Load and Installation

3.5 N·m static holding torque gives headroom for medium loads with modest acceleration. Because the drive is on the motor, the only field wiring is the DC supply and the EtherCAT cable, keeping the panel free of per-axis drives.

Applications

• Factory automation
• Packaging machinery
• Robotics
• CNC machine tools

Ask Lyenwsin for the EtherCAT ESI file and sample commissioning routine.