Estun Automation Co., Ltd.
ESTUN began with metal-forming controls in Nanjing in 1993. Today its industrial automation business includes servo drives and motors, while Trio supplies a complementary motion-control route. The current ED3L dual-axis presentation gives buyers concrete paired-axis current ratings, EtherCAT or CANopen/pulse variants, and cabinet-layout information.
- Company contact
- 1888 Jiyin Avenue · Jiangning[1]
- Paired-axis example
- ED3L 0404A / 1010A[5]
- Trio group milestone
- 2017 acquisition[2]
Metal-forming controls preceded the wider automation group.
The company and its UK motion specialist retain separate origins and product identities.
- 1987
Trio's independent beginning
The UK business starts as a motion-controller manufacturer.[2]
- 1993
ESTUN starts in Nanjing
Trio's group account identifies control systems for metal-forming machinery as ESTUN's original activity.[2]
- 2017
Trio joins ESTUN
Trio records the acquisition and continued use of its own motion-control brand.[2]
The current corporate scope
ESTUN's corporate introduction identifies Shenzhen stock code 002747 and separates industrial automation, industrial robots and industrial digital products. Its contact address is 1888 Jiyin Avenue, Jiangning District, Nanjing. For a buyer, the automation division is the relevant starting point for a servo drive/motor package, with controller and robotic-system scope specified separately when required.[1]
Servo production and motion-controller production have different published arrangements.
The group account identifies ESTUN's servo-drive and motor plant alongside robot manufacturing.
ESTUN's motor-control manufacturing
Trio's account describes an ESTUN servo-drive and motor manufacturing plant, distinct from the robot facility and turnkey factory-project business. The EtherCAT association directory independently identifies ESTUN as a developer and manufacturer of AC servo systems, naming CNC, textile, packaging, printing and woodworking machinery among their applications.[2][3]
Trio's component-controlled subcontracting
Trio states that selected subcontractors manufacture its products using component kits purchased and supplied by Trio. Its headquarters and primary research hub are in Tewkesbury, UK. This is a specific description of Trio's controller operation; it should be kept distinct from ESTUN's published servo-drive and motor plant when discussing the manufacturer of an offered system.[2]
The E and M options change both communication and available I/O.
The illustrated full codes distinguish EtherCAT from the CANopen/pulse route.
E option: EtherCAT
The naming graphic uses E for EtherCAT and A for the serial-encoder type. The EtherCAT column describes a communication module using CiA402, with five sequential inputs and three outputs. The illustrated codes include ED3L-0404AEA and ED3L-1010AEA. The table identifies EM3A, EM3J and EM3G as compatible motor families.[5]
M option: CANopen and pulse
The M column identifies CANopen/pulse, ten sequential inputs and four outputs. Its pulse-input table distinguishes differential-style command modes from open-collector operation and gives separate frequency limits. These are interface-specific details, so a CANopen/pulse offer should not be treated as the same wiring configuration as the EtherCAT version.[5]
Uniform dimensions support a row of drives; gantry duty still needs an axis definition.
The dual-axis page combines mechanical packaging with a named synchronised-control feature.
Cabinet geometry and power
ESTUN describes equal height and depth across different-power ED3L dual-axis drives for side-by-side installation. The technical image gives a 200–240 VAC main supply in single- or three-phase form, with a separate single-phase control-voltage specification. The operating table states −5 to +55 °C and 5–95% relative humidity without condensation or freezing. These are the published reference conditions for the illustrated variants.[5]
Two mechanically linked axes
Gantry synchronised control is explicitly listed among the ED3L dual-axis functions. For a gantry proposal, VFDMatch recommends describing both motors, the mechanical coupling, home/limit sensing and the required controller coordination. Keep that machine brief alongside the complete E/M option code, feedback hardware and commissioning scope; the catalogue feature alone does not define the finished machine's synchronisation accuracy.[5]
Keep the motion controller and the servo documentation identifiable.
The group connection gives access to complementary motion products, while each family retains its own document set.
Coordinated motion through Trio
Trio describes Motion Coordinators covering one to 128 axes of servo, stepper, piezo and hydraulic motion, with its Motion-iX programming technology. Its range also includes Motion-PLC products and DX servo/motor packages. The axis count is a controller-range description, not a specification of the ED3L dual-axis power stage. Specify the selected controller and the actual networked axes together.[2]
Documents for the offered family
ESTUN's English index separates ED3L, Summa ED3S, ProNet Plus and DX families. The ED3L dual-axis page lists a bus-type V1.11 manual, a motion-products V2.20 catalogue and separate pulse-driver material. The ProNet Plus guide has its own library entry. For handover, request the applicable file and model combination rather than carrying a parameter from a different series into the quotation.[4][5][6]
Explore ESTUN products on VFDMatch.
Continue with the published series or exact model before preparing your request.
ProNet Plus
ESTUN publishes a dedicated ProNet Plus servo-system selection guide. A servo-system inquiry should identify both the drive and the matched motor rather than relying on the broader company portfolio.
A brief that makes the next reply useful.
Copy these prompts and add your project details. Keep the same scope when comparing quotations.
- Two separate axis motor and load definitions
- Full ED3L model including E/M and encoder option
- Single- or three-phase main supply and control power
- Controller, network and required I/O
- Gantry sensing and mechanical relationship if applicable
- Matching motor, cables and family-specific documents
Buyer questions
Are ESTUN and Trio the same company origin?
ESTUN began in Nanjing in 1993. Trio began in the UK in 1987 and records its ESTUN acquisition in 2017.
Is ED3L-0404A's 2.9 Arms the combined current of two axes?
The published table gives 2.9 Arms for each of the two axes, with 11.5 Arms maximum for each.
Do the EtherCAT and CANopen/pulse ED3L variants have the same I/O?
The displayed technical table gives five inputs and three outputs for the EtherCAT column, versus ten inputs and four outputs for the CANopen/pulse column.
Can ProNet Plus parameters be assumed for ED3L?
Use the matching family's complete model and technical documents. ESTUN publishes these as separate product and guide routes.
Sources & editorial review
Company and product facts are drawn from the sources below. The project briefs and procurement notes are VFDMatch editorial analysis. Statutory disclosures establish company records; order-specific technical acceptance uses the applicable product documents.
- Official company account
ESTUN corporate introduction
Origin, Shenzhen stock code 002747, business divisions and Nanjing contact
Reviewed 2026-10-08 - Group-company primary account
Trio company and ESTUN group overview
Metal-forming origin, ESTUN manufacturing, Trio history and distinct controller manufacturing model
Reviewed 2026-10-08 - Industry association record
ESTUN EtherCAT Technology Group directory
Company identity and servo research/manufacturing scope; membership not a product certification
Reviewed 2026-10-08 - Official product index
Current English servo-driver catalogue
Distinct ED3L, Summa, ProNet Plus and DX product routes
Reviewed 2026-10-08 - Official product presentation
ED3L dual-axis product and technical tables
Model naming, current, supply, interfaces and operation tables visually read; download titles inspected, files unavailable
Reviewed 2026-10-08 - Official document index
ProNet Plus selection-guide entry
Separate named selection guide; linked PDF returned an error and is not used for numerical claims
Reviewed 2026-10-08
Ready to define the configuration?
Bring your motor nameplate, load cycle and controller details to the next discussion.