Estun AC Servo Drives, E21/E21S CNC Controllers, EM3 Motors & ER Industrial Robots

Direct supply of advanced motion control and robotics hardware from Nanjing Estun Automation Co., Ltd. (南京埃斯顿自动化股份有限公司, Nanjing, China): dedicated E21/E21S press brake controllers, ED3L and ED5L EtherCAT servo drives, EM3/EM5 synchronous servo motors, ProNet drives, and ER series articulated robots.

Estun E21, E21S & E200P Dedicated CNC Controllers for Press Brakes and Guillotine Shears

The E21 and E21S dedicated numerical control systems represent the globally proven industrial benchmark for hydraulic press brakes and plate shearing machines.

The E21 controller executes high-precision positioning of the backgauge (X-axis) and stroke depth limit block (Y-axis), incorporating unilateral positioning algorithms to fully eliminate ballscrew mechanical backlash.

The system maintains an internal non-volatile memory holding up to 40 distinct programs with 25 bending steps each, featuring programmable pressure-holding timers, automated retract delays upon tooling contact, and manual/single/automatic execution modes.

Compact all-in-one panel casing engineered with IP65-rated front enclosure and a high-contrast backlit LCD operator display
Simultaneous control of backgauge positioning (X-axis) and bending depth mechanical limit (Y-axis) with resolution down to 0.01 mm
Integrated non-volatile memory storing up to 40 bending programs with 25 sequential steps each, protected against power blackouts
Configurable backgauge retract delay upon work clamping and hardware piece counter tracking finished parts productivity

Estun ED3L, ED3S, ED5L & ED5E Intelligent Digital AC Servo Drives (EtherCAT / CANopen)

The Estun ED3L and ED5L AC servo drive lineup constitutes an advanced vector-control servo amplification platform optimized for high-speed CNC machine tools, automated metal forming, and multi-axis robotics.

Featuring native EtherCAT (ED5E / ED3E) and CANopen bus connectivity operating down to 250 µs synchronization cycles, these drives offer velocity loop bandwidths up to 3.2 kHz alongside traditional analog ±10V and Step/Dir interfaces.

Real-time online inertia identification coupled with adaptive Notch filters actively eliminates mechanical resonance and vibration.

Direct EtherCAT and CANopen fieldbus integration running standardized CiA 402 drive motion profiles
Velocity loop bandwidth scaling to 3.2 kHz with sub-50 µs current loop response ensuring micro-step path tracking
Real-time adaptive resonance suppression utilizing automated Notch filters to stabilize compliant mechanical assemblies
Complete interface compatibility with 23-bit absolute encoders and integrated STO (Safe Torque Off, SIL3) functional safety

Estun EM3 (EM3A, EM3J, EM3G) & EM5 Synchronous AC Servo Motors (50W – 15kW)

The EM3 and EM5 permanent-magnet AC synchronous servo motor series is engineered in synergy with ED3L/ED5L drives for CNC machinery, precision feed drives, and robotic kinematic axes.

Offering low (EM3A), medium (EM3J), and high (EM3G) rotor inertia configurations spanning 50W to 15kW with continuous torque outputs up to 100 N·m, these motors incorporate battery-free 23-bit multi-turn absolute encoders (EM3-BF series), sealed IP65/IP67 mechanical enclosures, and optional holding

brakes.

Extensive power ratings from 50W to 15kW with 300% peak overload torque capability for rapid acceleration
Tailored inertia matrices including low (EM3A), medium (EM3J), and high inertia (EM3G) for optimal load balancing
Cutting-edge 23-bit battery-free absolute encoders (EM3-BF) preventing home-position loss during extended outages
Industrial IP65 / IP67 environmental sealing equipped with integrated 24V DC holding brakes for gravity-loaded vertical axes

Estun ER Series 6-Axis Articulated Industrial Robots & iER3 SCARA Robots

Estun ER series industrial articulated robots cover payload capacities spanning 3kg to 700kg with reach envelopes from 600mm to 3200mm.

Purpose-built for automated robotic arc and laser welding (ER16-1600, ER20-1700), high-speed palletizing and material handling (ER50, ER100, ER220), and machine tending of press brakes and CNC centers.

Controlled by Estun's integrated motion cabinets running proprietary trajectory-damping algorithms, while the iER3 SCARA robot portfolio handles high-speed 3C electronics assembly and optical pick-and-place.

6-axis articulated kinematic architecture offering 3kg to 700kg payloads and up to 3200mm reaches with ±0.02mm repeatability
Dedicated modular software application suites for robotic welding, palletizing, press-brake tending, and polishing
Ultra-fast 4-axis SCARA robots iER3-400-SR and iER3-500-SR dedicated to high-speed electronics assembly operations
Direct component sourcing: cycloidal and harmonic reducers, joint bearings, balancer cylinders, and internal wrist wiring harnesses

Estun ProNet, ProNet-E & ProNet-Plus AC Servo Amplifiers for CNC Machinery

The ProNet series servo amplifier family (encompassing standard models ProNet-08AMC, ProNet-10AMC, ProNet-15AMC, ProNet-20AMC, and ProNet-E) represents Estun's proven DSP-driven digital servo platform widely deployed across CNC plasma cutters, laser gantries, milling machines, and woodworking lines.

Supporting Step/Dir pulse positioning, ±10V analog speed/torque control, Modbus RTU over RS-485 serial communication, and direct connection with incremental encoders and resolvers, ProNet drives ensure reliable operation.

Rated power capacities from 200W up to 7.5kW with 220V single-phase and 380V three-phase input configurations
Triple operating modes: Step/Dir pulse position control, analog ±10V speed loop, and internal multi-step torque limiting
Onboard parameter storage with integrated 5-digit LED diagnostic panel and tactile engineering keys for rapid commissioning
Fast-turnaround supply for machine repairs: replacement main boards, power driver stages, IGBT modules, and connector kits

Estun FLEX & Trio Motion Multi-Axis Programmable Motion Controllers (MC6N, MC664-X)

The integrated motion control portfolio developed by Trio Motion Technology and Estun FLEX (including FLEX-6-NANO, MC6N, MC664-X, EMP, and MCS controllers) orchestrates high-speed multi-axis motion coordinating up to 64 servo axes via EtherCAT with cycle times scaling down to 125 µs.

Supporting Trio BASIC and IEC 61131-3 standard programming environments, these controllers manage multi-dimensional 3D spatial interpolation, electronic camming (E-Cam), and electronic gearing (E-Gear) across automated packaging, converting, and printing lines.

Hardware capability commanding up to 64 coordinated axes over deterministic EtherCAT with 125 µs cycle rates
Flexible software development utilizing IEC 61131-3 standard languages (Structured Text, Ladder, FBD) and Trio BASIC multitasking
Integrated transformation kinematics for Delta robots, SCARA, Cartesian gantries, and CNC toolpath offsets
Modular I/O slices and interface gateway expandability supporting remote digital/analog terminals, CANopen, and Profinet

Estun Robot Spare Parts, Teach Pendants & Control Cabinet Accessories

Genuine factory replacement components and service kits engineered for Estun industrial robot arms, press brakes, and automation cells.

The parts inventory includes handheld Teach Pendant operator terminals with touch displays and emergency stop buttons, high-flex robotic power and encoder cable assemblies designed for continuous drag chain flexing, digital and analog I/O bus slices, braking resistors, cabinet forced-cooling fans,

cycloidal joint reducers, and complete axis maintenance overhauls.

Genuine Estun Teach Pendant handheld programming terminals featuring industrial color touchscreens, 3-position deadman switches, and jog controls
Heavy-duty shielded servo power cables and encoder signal wiring engineered for multi-million cycle drag chain operations
Digital and analog I/O modular terminal slices, EtherCAT bus couplers, and plug-in machine interface boards
Aluminum-housed dynamic dynamic braking resistors, filter fan assemblies for control cabinets, and sealed connector assemblies

Estun Component Selection, CNC Identification & Nameplate Verification

Nanjing Estun Automation Co., Ltd. (南京埃斯顿自动化股份有限公司, founded in 1993 in Nanjing, Jiangsu Province, China; Shenzhen Stock Exchange ticker SZSE: 002747) stands as a prominent global pioneer in motion control solutions, industrial robotics, and numerical control systems.

Driven by its core "All Made by Estun" philosophy, the enterprise manufactures over 95% of mission-critical motion hardware—including servo drives, permanent magnet servo motors, controllers, and robotic mechanical gearboxes—within its own state-of-the-art facilities.

To ensure precise part identification and flawless hardware replacement, provide a clear photograph of the device nameplate displaying the complete alphanumeric designation.

For AC servo drives (e.g., ED3L-08AMC, ED5L-15AEA, ProNet-08AMC, ProNet-E-10A), please specify the incoming electrical supply (single-phase 220V or three-phase 380V), communication fieldbus protocol (EtherCAT, CANopen, analog ±10V, or Step/Dir pulse control), and onboard firmware revision.

When sourcing CNC controllers for hydraulic press brakes or mechanical shears (such as E21, E21S, E22, E200P, or E300), confirm the target machine builder, number of synchronized control axes (X, Y), encoder signaling standards, and limit sensor polarity.

For EM3/EM5 AC servo motors, identify rated output power, flange frame dimensions, mechanical shaft type (keyway or smooth), and electromagnetic holding brake options.

E21 & E21S Dedicated Digital Controllers for Press Brakes and Shearing Machinery

The Estun E21 and E21S digital control systems represent the globally proven operational standard installed across thousands of sheet-metal fabrication facilities. The E21 precisely coordinates the positioning of the backgauge (X-axis) and the mechanical depth stop block (Y-axis).

Its proprietary unilateral positioning routine completely compensates for ballscrew mechanical play, maintaining bending depth repeatability down to ±0.02 mm.

An internal non-volatile flash memory stores up to 40 distinct bending programs with up to 25 programmable bending steps each, accommodating independent position parameters, pressure-dwell timers, and programmable backgauge retract delays (Retract).

The retract function prevents workpiece distortion by automatically retreating the backgauge fingers prior to punch engagement.

We supply genuine Estun E21 and E21S controller units, sealed membrane keypads, internal flat cables, and relay interface boards for rapid field repair of damaged CNC panels.

ED3L, ED3S, ED5L & ED5E Intelligent AC Servo Drives with EtherCAT Bus Integration

Estun’s flagship ED3L and ED5L AC servo drive portfolio delivers precision closed-loop dynamic performance tailored for multi-axis CNC machine tools, fiber laser cutting heads, and robotic articulated arms.

The drives feature native support for EtherCAT (ED5E, ED3E) and CANopen industrial fieldbuses operating down to 250 µs cycle intervals, complying with the standardized CiA 402 drive motion profile (CoE).

Velocity loop bandwidth reaches 3.2 kHz with current loop response under 50 µs, assuring immediate dynamic compensation during sudden cutting tool engagement or severe acceleration profiles.

Real-time online inertia identification and adaptive multi-band Notch filters dynamically identify and damp high-frequency mechanical resonances in compliant mechanical transmissions.

We supply complete ED3L/ED5L servo drives rated from 2.5A to 50A, STO (Safe Torque Off, SIL3) hardware safety modules, AC line EMI filters, and external regenerative braking resistors.

EM3 & EM5 Synchronous AC Servo Motors with Battery-Free Absolute Encoders

The EM3 (models EM3A, EM3J, EM3G, EM3L) and EM5 permanent-magnet synchronous AC servo motor lineup spans power ratings from 50W to 15kW with continuous torque delivery scaling to 100 N·m and overload torque capability up to 300%.

Machine builders can select low-inertia rotors (EM3A) for rapid dynamic indexing or medium/high-inertia configurations (EM3J, EM3G) for smooth motion across heavy CNC gantry axes.

Motors feature advanced 23-bit multi-turn absolute encoders with battery-free mechanical revolution counters (EM3-BF series).

The magnetic gear mechanism permanently retains absolute machine coordinates through extended plant power shutdowns, eliminating periodic battery maintenance and loss of homing points.

We supply EM3/EM5 servo motors in 40, 60, 80, 100, 130, and 180 mm flange sizes equipped with optional 24V DC failsafe electromagnetic holding brakes for vertical gravitational axes.

ER Series 6-Axis Articulated Robots & iER3 SCARA Robots for Production Automation

Estun ER series industrial 6-axis articulated robots accommodate payloads from 3kg to 700kg with operating reach envelopes spanning 600mm to 3200mm.

The ER family is purpose-engineered for robotic arc and laser welding (ER16-1600, ER20-1700), heavy-payload palletizing (ER50, ER100, ER220), and machine tending of press brakes and punch presses.

The robotic arm incorporates proprietary high-precision RV cycloidal and zero-backlash harmonic drive reducers.

Estun robot controllers feature embedded process technology packages offering automated trajectory smoothing, active vibration damping, and dynamic inertia compensation under maximum load envelopes.

We supply factory spare components for Estun ER robot arms: joint reducers, internal arm cable harnesses, counterbalance cylinders, force-torque sensors, and protective foundry suits.

ProNet, ProNet-E & ProNet-Plus AC Servo Amplifiers for CNC Machinery

The legacy Estun ProNet servo amplifier family (including ProNet-08AMC, ProNet-10AMC, ProNet-15AMC, ProNet-20AMC, and ProNet-E) is renowned for proven stability in harsh industrial environments subject to airborne dust and severe plasma arc electrical interference.

The platform utilizes high-speed 32-bit digital signal processors (DSP), supporting Step/Dir pulse positioning, ±10V analog speed/torque control, and internal multi-step torque limiting.

Standard RS-485 interfaces support Modbus RTU communication for seamless supervisory integration with PLC and HMI screens. The drives interface reliably with line-driver incremental optical encoders as well as heavy-duty brushless resolvers resistant to elevated thermal and shock profiles.

We supply replacement ProNet amplifiers, driver control boards, intelligent IGBT inverter power stages, and external programming keyboards.

Trio Motion Technology & Estun FLEX Multi-Axis Synchronized Controllers

Combining the engineering heritage of British motion pioneer Trio Motion Technology with Estun’s automation architecture, the FLEX-6-NANO, MC6N, MC664-X, MCS, and EMP motion control platforms coordinate up to 64 servo axes over deterministic EtherCAT bus networks with cycle rates down to 125 µs.

The Trio Motion Perfect programming suite supports multi-tasking Trio BASIC alongside the international standard IEC 61131-3 (ST, LD, FBD).

Built-in mathematical kinematics libraries manage multi-axis 3D spatial interpolation, virtual electronic camming (E-Cam), synchronized electronic gearing (E-Gear), and Cartesian coordinate transformations for Delta and SCARA robot cells.

We supply Trio MC6N processor engines, compact DIN-rail FLEX-6-NANO controllers, remote slice I/O modules, and multi-protocol industrial gateways.

Genuine Estun Spare Parts, Handheld Teach Pendants & Robotic Cable Assemblies

To ensure ongoing preventative maintenance and rapid recovery from unscheduled downtime, SpareX provides direct factory sourcing of genuine Estun replacement parts from Nanjing.

Our catalog covers handheld Teach Pendant operator terminals with industrial color touchscreens, 3-position safety deadman grips, high-flex robotic power and feedback cable assemblies designed for dynamic drag chain applications, distributed I/O modules, cabinet filter fans, and dynamic braking

resistors.

All replacement items ship in sealed manufacturer packaging with factory warranties and verified serial tracking, backed by complete commercial documentation and global freight logistics.

Equipment configurations, factory production lead times, and export pricing for Estun products are calculated individually upon technical inquiry; public retail price lists are not published by the manufacturer.

We operate as an independent international supplier and are not an exclusive agent of Nanjing Estun Automation Co., Ltd.