Multi-axis servo drive
Yaskawa Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT) multi-axis servo drive
Sigma-X amplifiers in single-, dual- and three-axis formats, with EtherCAT or MECHATROLINK-4/III and an analog/pulse single-axis option.
Key specifications
| Power (max) | 15,000 W |
|---|---|
| Supply | 200 Vac (SGDXS/W/T) and 400 Vac (SGDXS) |
| Fieldbus | EtherCAT, MECHATROLINK-4, MECHATROLINK-III, analog voltage / pulse train (SGDXS) |
| Axes | 3 |
Summarised in our own words from Yaskawa Electric Corporation's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2
Notes on this data
SGDXS 200 V 50 W-1.5 kW, 400 V 0.5-15 kW; SGDXW up to 750 W/axis; SGDXT up to 400 W/axis. Output currents not published in extracts. Catalogue notes multi-axis units may not reach the same control gain as SGDXS.
Specify Motion is not affiliated with Yaskawa Electric Corporation. Yaskawa and Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT) are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
Alternatives that meet or exceed these figures
Engineers often come to us with a Yaskawa part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
A four-axis EtherCAT servo drive in one housing, 400-1500 W per axis on 220 or 400 VAC, with two STO circuits shared across the axes.
| Published maximum | Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT) | 4EL7-EC Four-Axis EtherCAT AC Servo Dr… |
|---|---|---|
| Continuous current | — | 6.8 A |
| Peak current | — | 20.4 A |
| Power | 15,000 W | 1,500 W |
| Axes | 3 | 4 meets or exceeds |
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 | Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT) | DigiFlex Performance Servo Drives (DP,… |
|---|---|---|
| Continuous current | — | 150 A |
| Peak current | — | 250 A |
| Power | 15,000 W | 27,400 W meets or exceeds |
| Axes | 3 | — |
Leadshine's EL7 platform spans 220 VAC drives from 400 W to 2 kW, 400 VAC drives to 7.5 kW and an 11-22 kW high-power range, all with STO and EtherCAT, Modbus/pulse or PROFINET variants.
| Published maximum | Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT) | EL7S / EL7 Series AC Servo Drives |
|---|---|---|
| Continuous current | — | 44 A |
| Peak current | — | 88 A |
| Power | 15,000 W | 22,000 W meets or exceeds |
| Axes | 3 | 1 |
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.
What a multi-axis servo drive is
A multi-axis servo drive controls two or more servo motors from one unit, usually sharing a power supply, DC bus and communication interface. Formats include compact two- to four-axis drives in one housing and modular systems with a common supply module and separate axis modules. Sharing the bus lets energy from a decelerating axis be used by others, reducing braking losses. Most connect to a motion controller or PLC over EtherCAT or another industrial Ethernet network.
When engineers choose a multi-axis servo drive
Choose a multi-axis drive for machines with several coordinated servo axes in one cabinet, such as robots, packaging machines and gantries. It saves space, wiring and cost per axis compared with single drives. The trade-offs are flexibility and fault isolation: axes share the supply, so a supply fault affects all axes, and replacing one module may need specific spare strategy. Mixing very different power levels can be limited by module ranges.
How to specify the Yaskawa Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT)
Send these with your enquiry and an engineer can confirm the right Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT) variant or an equivalent:
- Number of axes and power per axis (A, kW)
- Supply voltage (V AC or DC)
- Network interface and cycle time
- Motor and feedback types
- Shared bus and regenerative energy handling
- Safety functions per axis
- Cabinet size and cooling
Common mistakes to avoid
- Sizing supply module for the sum of peaks without considering simultaneous demand
- Ignoring how one fault affects all axes
- Choosing modules without room for future axes
- Overlooking network cycle time with many axes
Yaskawa Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT): frequently asked questions
What is the Yaskawa Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT)?
Sigma-X amplifiers in single-, dual- and three-axis formats, with EtherCAT or MECHATROLINK-4/III and an analog/pulse single-axis option. Published series figures include power 15,000 W, axes 3. It is made by Yaskawa Electric Corporation; Specify Motion can help source it or propose an equivalent.
Who makes the Yaskawa Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT)?
The Yaskawa Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT) is made by Yaskawa (Yaskawa Electric Corporation) and is listed here for engineers comparing options. Specify Motion is not affiliated with Yaskawa Electric Corporation; brand names are used only to identify the product.
What is the power of the Yaskawa Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT)?
The published series maximum power is 15,000 W. Individual models and sizes in the Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT) 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 Yaskawa Sigma-X SERVOPACKs (SGDXS / SGDXW / SGDXT)?
Yes. On published figures, Leadshine 4EL7-EC Four-Axis EtherCAT AC Servo Drive and ADVANCED Motion Controls DigiFlex Performance Servo Drives (DP, DZ, DV) are the closest match from our supply network. An engineer confirms the fit against your application before recommending anything.
What are the benefits of a shared DC bus?
On a shared DC bus, energy regenerated by a decelerating axis can be used by other axes that are accelerating, reducing the energy dissipated in braking resistors. It also reduces wiring and supply components. Sizing must consider simultaneous peak demand on the shared supply.
Are multi-axis drives cheaper than single-axis drives?
Typically, per axis, multi-axis drives cost less and take less cabinet space, because the supply, communication and housing are shared. The saving grows with the number of axes. For machines with only one or two axes, or widely separated axes, single drives can be simpler.
Further reading: How to select a multi axis servo drive · How to select a servo drive · Servo drives
Other multi-axis servo drive series
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