Fieldbus stepper drive
Leadshine EM2RS Series fieldbus stepper drive
Open-loop Modbus RTU stepper drive with a 16-segment position table, up to 31 drives per RS485 network, including an AC-input model.
Need this part, a replacement or a better-fit option? Our engineers help with selection, procurement, sourcing, competitive pricing and lead times.
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Need Leadshine parts, a replacement or another suitable option? Send your part number or describe the application. We’ll review the requirement and help with product selection, sourcing, pricing and lead times.
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Key specifications
| Supply | 20-50 VDC, 20-80 VDC; EM2RS-A882 18-80 VAC / 30-110 VDC |
|---|---|
| Feedback | none (open loop) |
| Fieldbus | Modbus RTU (RS485) |
| Axes | 1 per drive, up to 31 on network |
| Current (max) | 8.2 A |
| Motor nema sizes | 8, 11, 14, 17, 23, 24, 34 |
Series ranges as published; individual models vary. The full datasheet, drawings and CAD models are available on request.
Leadshine EM2RS Series replacement and alternative options
Use these supply-network options as a starting point for an engineering check. We can also help source the original Leadshine part. Published series figures do not establish an exact-model or drop-in replacement: confirm ratings, fit, interfaces and approvals for your application.
AMC's analogue servo drives for centralised control schemes: set up with DIP switches and potentiometers, commanded by +/-10 V or PWM. They span 10-400 VDC and 45-265 VAC, up to 150 A continuous and 250 A peak, in PCB, panel and vehicle formats. PCB extended-environment parts run -40 to +85 C.
| Published maximum | Leadshine EM2RS Series | AxCent Analogue Servo Drives (AB, AZ, … |
|---|---|---|
| Continuous current | 8.2 A | 150 A meets or exceeds |
| Peak current | — | 250 A |
Network-capable AMC digital drives spanning 10-747 VDC and 120-480 VAC, up to 150 A continuous and 250 A peak (27.4 kW peak power), in PCB, panel, machine and vehicle formats. They support almost any motor type and feedback, plus CANopen, EtherCAT, POWERLINK and Modbus.
| Published maximum | Leadshine EM2RS Series | DigiFlex Performance Servo Drives (DP,… |
|---|---|---|
| Continuous current | 8.2 A | 150 A meets or exceeds |
| Peak current | — | 250 A |
| Power | — | 27,400 W |
ADVANCED Motion Controls' ultra-compact, high power-density digital servo drives for 10-90 VDC systems, up to 100 A continuous and 200 A peak. They come in PCB, machine-embedded, panel and development-board formats, carry STO as standard, and run EtherCAT, CANopen or Ethernet/IP. Extended-environment models are rated -40 to +95 C.
| Published maximum | Leadshine EM2RS Series | FlexPro Digital Servo Drives (FE, FX, … |
|---|---|---|
| Continuous current | 8.2 A | 100 A meets or exceeds |
| Peak current | — | 200 A |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Leadshine EM2RS Series model codes
Published model codes in the Leadshine EM2RS Series range. Search this page for your part number, or send it to us for availability, pricing and lead time.
| Model code | Description | Pricing / replacement |
|---|---|---|
| EM2RS-A882 | 18-80 VAC / 30-110 VDC | Quote or replacement for EM2RS-A882 → |
Options
- 7 DI / 3 DO
- PP/PV/homing
- teaching function
Typical applications
What a fieldbus stepper drive is
A fieldbus stepper drive receives motion commands over a network such as CANopen, Modbus RTU, EtherCAT or another industrial Ethernet protocol, rather than step and direction pulses. Commands set position, velocity and current targets, and the drive reports status, position and faults back to the controller. Many support standard device profiles such as CiA 402, so a PLC or motion controller can treat them like servo axes. Open-loop and closed-loop versions are common.
When engineers choose a fieldbus stepper drive
Choose a fieldbus stepper drive for machines with several stepper axes controlled by a PLC or motion controller, where wiring, diagnostics and parameter management matter. It replaces many pulse cables with one network. The trade-offs are configuration effort and network dependency: the drive needs network set-up and configuration files, and a network fault stops all axes. For a single simple axis, pulse control can be quicker to commission.
How to specify the Leadshine EM2RS Series
Send these with your enquiry and an engineer can confirm the right Leadshine EM2RS Series variant:
- Network protocol and device profile
- Supply voltage (V DC)
- Phase current (A)
- Open or closed loop
- I/O and homing functions
- Cycle time and synchronisation
- Configuration files and software
Common mistakes to avoid
- Choosing a protocol the controller does not support
- Not planning node addressing and network topology
- Overlooking cycle time for synchronised motion
- Missing configuration files for the controller
Leadshine EM2RS Series: frequently asked questions
Can you help replace Leadshine EM2RS Series or source the original?
Send the full model code, quantity and required date. Our engineers can check original-part availability and assess suitable alternatives, including Motion Control Products options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Leadshine EM2RS Series?
Open-loop Modbus RTU stepper drive with a 16-segment position table, up to 31 drives per RS485 network, including an AC-input model. Published series figures include current 8.2 A. It is available through our supply network, and our engineers can confirm the right variant for your application.
What model codes are in the Leadshine EM2RS Series range?
The Leadshine EM2RS Series range includes EM2RS-A882. The table on this page lists each published model code with its key figures. Send us the code you use, or the one you need to replace, and our engineers will confirm availability, lead time or the closest equivalent.
Who makes the Leadshine EM2RS Series?
The Leadshine EM2RS Series is made by Leadshine (Leadshine Technology) available through our supply network. Send us your requirement for pricing, lead time, datasheets and CAD.
What is the current of the Leadshine EM2RS Series?
The published series maximum current is 8.2 A. Individual models and sizes in the Leadshine EM2RS Series range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Is there an alternative to the Leadshine EM2RS Series?
We can assess suitable replacement options. On published figures, ADVANCED Motion Controls AxCent Analogue Servo Drives (AB, AZ, AV, B, AVB) and ADVANCED Motion Controls DigiFlex Performance Servo Drives (DP, DZ, DV) are options to assess from our supply network. An engineer confirms the fit against your application before recommending anything.
What is CiA 402?
CiA 402 is a standard device profile for drives and motion control, originally for CANopen and also used on EtherCAT and other networks. It defines modes such as profile position, velocity and homing, and a standard state machine. Drives supporting it are easier to integrate with compatible controllers.
Is EtherCAT better than CANopen for stepper drives?
EtherCAT offers much higher bandwidth and precise synchronisation, which suits coordinated multi-axis motion. CANopen is simpler, cheaper and adequate for many point-to-point axes. Choose by controller support, number of axes, required cycle time and whether axes must be tightly synchronised.
Further reading: How to select a stepper drive · How to select a motion controller or plc · Servo drives
Other fieldbus stepper drive series
Engineer support
Need Leadshine EM2RS Series or a complete system around it?
Tell us what you need, whether it is this part, an equivalent or a complete axis built around it. An engineer will review your requirements and reply, normally within one working day.
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