AC servo drive
Leadshine EL7S / EL7 Series AC Servo Drives
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.
Need this part, a replacement or a complete package? Our experienced UK engineering team helps you select, source and obtain the right products, with pricing, delivery coordination and after-sales support.
Pricing and availability
Get pricing, sourcing and replacement support
Need Leadshine parts, a replacement or a suitable alternative? Send us a part number, or tell us what the machine needs to do. Our UK engineers will come back with the right product, pricing, lead time and delivery, whether that is the original part, a checked alternative or a complete axis.
- Original parts or a checked alternative
- Pricing, lead time and delivery in one reply
- Components, complete axes and ongoing support
No obligation. Add what you know and an engineer will help with the rest. Prefer to configure it? Build a specification.
Spec builder
Configure Leadshine EL7S / EL7 Series AC Servo Drives
Select every part you need and answer the questions an applications engineer would ask. Our engineers use your specification to come back with the right products, pricing and lead times. You see your summary before we ask for any details.
Already know the part number? Send it to us directly.
- 1Products
- 2Performance
- 3Environment
- 4Volumes
- 5Your spec
What are you specifying?
Select everything you need. A motor, drive and gearbox can be specified together as one axis.
Key specifications
| Power | 400–22,000 W |
|---|---|
| Supply | 1ph/3ph 220 VAC; 3ph 400 VAC; 3ph 380-480 VAC (11-22 kW) |
| Feedback | RS485 serial absolute encoder (23-bit), Secondary 2500-line encoder (11-22 kW) |
| Fieldbus | EtherCAT, Modbus RTU, Pulse + direction, Analogue, PROFINET (EL7-PN) |
| Axes | 1 |
| Continuous current (max) | 44 A |
| Peak current (max) | 88 A |
| Safe torque off | Yes |
Series ranges as published; individual models vary. The full datasheet, drawings and CAD models are available on request.
Leadshine EL7S / EL7 Series AC Servo Drives 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.
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 | EL7S / EL7 Series AC Servo Drives | DigiFlex Performance Servo Drives (DP,… |
|---|---|---|
| Continuous current | 44 A | 150 A meets or exceeds |
| Peak current | 88 A | 250 A meets or exceeds |
| Power | 22,000 W | 27,400 W meets or exceeds |
| Axes | 1 | — |
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 | EL7S / EL7 Series AC Servo Drives | AxCent Analogue Servo Drives (AB, AZ, … |
|---|---|---|
| Continuous current | 44 A | 150 A meets or exceeds |
| Peak current | 88 A | 250 A meets or exceeds |
| Power | 22,000 W | — |
| Axes | 1 | — |
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 | EL7S / EL7 Series AC Servo Drives | FlexPro Digital Servo Drives (FE, FX, … |
|---|---|---|
| Continuous current | 44 A | 100 A meets or exceeds |
| Peak current | 88 A | 200 A meets or exceeds |
| Power | 22,000 W | — |
| Axes | 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.
Leadshine EL7S / EL7 Series AC Servo Drives model codes
Published model codes in the EL7S / EL7 Series AC Servo Drives range. Search this page for your part number, or send it to us for availability, pricing and lead time.
| Model code | Description | Pricing / replacement |
|---|---|---|
| EL7-EC400S | EtherCAT, 220 VAC | Quote or replacement for EL7-EC400S → |
| EL7-EC750S | EtherCAT, 220 VAC | Quote or replacement for EL7-EC750S → |
| EL7-EC1000S | EtherCAT, 220 VAC | Quote or replacement for EL7-EC1000S → |
| EL7-EC2000S | EtherCAT, 220 VAC | Quote or replacement for EL7-EC2000S → |
| EL7-EC1000ST | EtherCAT, 400 VAC | Quote or replacement for EL7-EC1000ST → |
| EL7-EC1500ST | EtherCAT, 400 VAC | Quote or replacement for EL7-EC1500ST → |
| EL7-EC2000ST | EtherCAT, 400 VAC | Quote or replacement for EL7-EC2000ST → |
| EL7-EC3000ST | EtherCAT, 400 VAC | Quote or replacement for EL7-EC3000ST → |
| EL7-EC4400ST | EtherCAT, 400 VAC | Quote or replacement for EL7-EC4400ST → |
| EL7-EC5500ST | EtherCAT, 400 VAC | Quote or replacement for EL7-EC5500ST → |
| EL7-EC7500ST | EtherCAT, 400 VAC | Quote or replacement for EL7-EC7500ST → |
Options
- Resolver expansion card (11-22 kW, under development)
Typical applications
What an AC servo drive is
An AC servo drive, or servo amplifier, powers and controls a servo motor from mains supply. It rectifies the AC input to a DC bus, then uses an inverter of power transistors switched by PWM to produce controlled three-phase current in the motor. Nested current, velocity and position loops use encoder feedback to follow commands from pulse and direction, analogue or industrial Ethernet. Modern drives add auto-tuning, vibration suppression and safety functions such as safe torque off.
When engineers choose an AC servo drive
Choose an AC servo drive for mains-powered machines with servo axes from tens of watts to many kilowatts, such as packaging, machine tools and robotics. It gives precise, dynamic control with standard industrial interfaces. The trade-offs are cabinet space, wiring, EMC measures and the need to match motor and feedback. For low-voltage or mobile machines, a DC drive is more suitable; for many axes in one cabinet, a multi-axis drive may save space.
How to specify the Leadshine EL7S / EL7 Series AC Servo Drives
Send these with your enquiry and an engineer can confirm the right EL7S / EL7 Series AC Servo Drives variant:
- Supply voltage and phases (V AC)
- Continuous and peak output current (A rms)
- Motor and feedback compatibility
- Command interface: pulse, analogue, EtherCAT, PROFINET and so on
- Safety functions, such as STO, and their rating (SIL, PL)
- Braking resistor and regenerative energy (W, J)
- Ambient temperature, mounting and cooling
Common mistakes to avoid
- Sizing on motor rated current without the drive's peak duration
- Ignoring regenerative energy on fast decelerations or vertical axes
- Leaving out EMC filtering and screened motor cables
- Mixing motor and encoder types the drive does not support
Leadshine EL7S / EL7 Series AC Servo Drives: frequently asked questions
Can you help replace Leadshine EL7S / EL7 Series AC Servo Drives 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 supply-network options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Leadshine EL7S / EL7 Series AC Servo Drives?
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 series figures include power 400 W, power 22,000 W, axes 1, continuous current 44 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 EL7S / EL7 Series AC Servo Drives range?
The EL7S / EL7 Series AC Servo Drives range includes EL7-EC400S, EL7-EC750S, EL7-EC1000S, EL7-EC2000S, EL7-EC1000ST, EL7-EC1500ST, EL7-EC2000ST, EL7-EC3000ST and 3 more. 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 EL7S / EL7 Series AC Servo Drives?
The Leadshine EL7S / EL7 Series AC Servo Drives 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 power of the Leadshine EL7S / EL7 Series AC Servo Drives?
The published series minimum power is 400 W. Individual models and sizes in the EL7S / EL7 Series AC Servo Drives 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 EL7S / EL7 Series AC Servo Drives?
We can assess suitable replacement options. On published figures, ADVANCED Motion Controls DigiFlex Performance Servo Drives (DP, DZ, DV) and ADVANCED Motion Controls AxCent Analogue Servo Drives (AB, AZ, AV, B, AVB) are options to assess from our supply network. An engineer confirms the fit against your application before recommending anything.
Does a servo drive need a braking resistor?
When a servo motor decelerates, it acts as a generator and returns energy to the drive's DC bus. If the bus capacitors cannot absorb it, the voltage rises and the drive trips. A braking resistor dissipates the energy as heat. Fast decelerations, high inertia and vertical axes usually need one.
What is safe torque off on a servo drive?
Safe torque off, or STO, is a safety function that removes power that could produce torque at the motor, without disconnecting the drive supply. It is defined in IEC 61800-5-2 and used as part of a machine's safety system. Check the safety level achieved and wiring requirements.
Further reading: How to select a servo drive · How to select a servo motor · Servo drives
Often compared with
Engineers specifying this series often compare it with:
Other ac servo drive series
Engineer support
Need Leadshine EL7S / EL7 Series AC Servo Drives or a complete system around it?
Tell us the part or application, quantity and timing. Our UK engineers will come back with the right product, pricing, lead time and delivery.
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Prefer to configure it? Use the spec builder.
How it works
From enquiry to delivery
Send a part number or describe the application. Our engineers take it from there: the right product, a clear quotation, and delivery and support arranged.
- 01Tell us what you needSend a part number, or configure the application, quantities and timing.
- 02An engineer reviews itWe check the specification and find the original part, a checked equivalent or a complete axis.
- 03Receive your quotationProducts, pricing, lead time and compatibility notes in one reply.
- 04Order and deliveryWhen you are happy, the order is placed and delivery and after-sales support are arranged.