EtherCAT Integrated closed loop Stepper Motor – 12 N·m, 17-Bit Absolute Encoder

Integrated Drive and Motor in One Unit

The iRSS86-80-120-17BC-RC/EC is an EtherCAT Integrated closed loop Stepper Motor from the iRSS-R/RC/EC series, built on an 86 mm frame with drive electronics and motor in one housing. It delivers 12 N·m holding torque with a 6.0 A rated current on an 80 VDC supply and carries a 17-bit absolute encoder. Because the driver is built into the motor housing, the machine builder removes one wiring harness, one panel component and one possible failure point. The shielded motor cable that normally connects driver to motor is replaced by a single fieldbus connection, which reduces installation time on multi-axis machines.

Fieldbus Control: RS485, CAN and EtherCAT

The unit supports RS485, CAN and EtherCAT, so it can join an existing control network without a pulse/direction interface. EtherCAT offers deterministic cycle times for synchronized multi-axis moves; RS485 and CAN cover retrofit and lower-cost machines. The -RC/EC suffix indicates the fieldbus interface options available on this model, and the fieldbus choice is made at configuration time.

closed loop Control with 17-Bit Absolute Encoder

The 17-bit absolute encoder provides high-resolution position feedback and retains position across power cycles, which removes the need to re-home after a restart. The closed loop corrects step loss in real time and holds position at standstill, so torque can be used closer to the rated limit than in an open-loop design. This makes the unit a practical choice for heavy axes where a missed step would stop a production line.

Specifications

• Frame size: 86 mm
• Holding torque: 12 N·m
• Supply voltage: 80 VDC
• Rated current: 6.0 A
• Fieldbus: RS485 + CAN / EtherCAT
• Encoder: 17-bit absolute
• Control mode: closed loop
• Design: compact, low vibration

Applications

The motor is specified for CNC machine tools, packaging machinery, factory automation and heavy indexing tables where synchronized motion and high torque are required. The 12 N·m class covers the largest axes in the integrated stepper range, replacing servo systems on machines where cost and panel space are constrained.

Selection Considerations

Confirm the 86 mm flange fits the axis, and verify that the 80 VDC bus can deliver 6.0 A peak during acceleration. Because the unit supports multiple fieldbus options, confirm the controller protocol before ordering. Lyenwsin provides full documentation and application support to help you integrate this EtherCAT stepper into your machine.