STEP Electric — Variable Frequency Drives, Elevator Automation, Servo Systems & Industrial Robotics

STEP Electric E6, AS, and M Series Low-Voltage Variable Frequency Drives (0.4 kW to 630 kW)

The E6, AS, and M low-voltage variable frequency drive (VFD) portfolio engineered by Shanghai STEP Electric Corporation provides high-performance motor speed and torque regulation for industrial processing lines, fluid handling pumps, heavy HVAC fans, and production conveyors.

Built around dual-core 32-bit digital signal processing architectures, STEP low-voltage inverters support sensorless vector control (SVC) and closed-loop field-oriented vector control (FVC) for induction motors and permanent magnet synchronous motors (PMSM).

The flexible modular platform achieves smooth low-speed starting torque up to 200% at 0.0 Hz, rapid torque response under dynamic load steps, and significant energy conservation across manufacturing facilities.

• Power ratings and electrical configurations: comprehensive series including E6-G/P, AS500, AS600, AS700, and compact M chassis covering 3-phase 380–480 V utility inputs with continuous output capacities from 0.4 kW to 630 kW
• Dynamic motor control performance: starting torque reaching up to 180–200% at zero speed under closed-loop PG feedback, speed regulation accuracy maintained within ±0.02%, and torque response time faster than 10 ms
• Fieldbus connectivity and modular expansions: native support for Profinet, EtherCAT, Ethernet/IP, CANopen, Modbus RTU/TCP protocols alongside universal encoder expansion boards accommodating incremental TTL/HTL, SinCos, and resolver feedbacks
• Harsh environment compliance: conformal circuit board coating meeting IEC 60721-3-3 class 3C3 and 3S3 industrial contamination resistance, integrated DC link chokes, class C3 EMC filters, and certified Safe Torque Off (STO SIL 3 / PL e) functional safety

STEP Electric AS800 Series Medium and High-Voltage Multi-Level Inverters (3 kV, 6 kV, 10 kV up to 10,000 kVA)

Engineered for heavy-duty industrial infrastructure, the AS800 series high-voltage variable frequency drives manufactured by Shanghai STEP Electric Corporation provide multi-megawatt motor control for critical pumps, high-pressure gas compressors, mining exhaust fans, and rubber internal mixers.

The AS800 utilizes a multi-level H-bridge cell topology fed by an integrated dry-type phase-shifting isolation transformer.

This multi-pulse architecture synthesizes virtually pure sinusoidal output waveforms with total harmonic distortion below 2%, enabling direct connection to standard medium-voltage motors without requiring output dv/dt chokes, sine filters, or motor derating.

• Voltage classes and capacity ranges: engineered for 3 kV, 6 kV, and 10 kV utility networks delivering continuous power outputs ranging from 250 kW up to 10,000 kVA
• Harmonic compliance and efficiency: input current and output voltage total harmonic distortion (THD) maintained under 2%, input power factor cos φ ≥ 0.96 across operating bands, and total system efficiency exceeding 96.5%
• Automated cell bypass redundancy: advanced solid-state bypass mechanism isolating faulted power cells in under 5 ms with neutral shift modulation to maintain uninterrupted operation without process disruption
• Heavy process equipment deployment: widely commissioned on municipal waterworks pumps, power plant induced-draft fans, mine ventilation fans, raw material ball mills, and Banbury rubber internal mixers

STEP Electric Intelligent Elevator Control Systems and Cabinets (Over 3,000,000 Systems Operating in 110 Countries)

As a global pioneer in vertical transportation electronics, Shanghai STEP Electric Corporation has deployed more than 3,000,000 elevator electrical control systems and intelligent cabinets across 110 countries and regions worldwide.

The product family integrates integrated elevator drive controllers, microprocessor master boards (SM-01, AS380, and STEP-F5021 series), group dispatch controllers for up to 8 elevators, and destination dispatch passenger terminals.

STEP elevator systems reliably manage high-speed passenger cars, commercial sky-lobby lifts, and heavy freight elevators operating at speeds up to 10 m/s across high-rise buildings with up to 64 floors, seamlessly interconnecting with the Elevator Cloud IoT predictive platform.

• Operational parameters and height scalability: engineered for residential, commercial, and freight elevators supporting speeds from 0.5 m/s to 10 m/s and vertical rises serving up to 64 landings
• Advanced group dispatch intelligence: adaptive destination control system coordinating up to 8 elevators in multi-car groups, optimizing passenger traffic flows and reducing wait times by 30–45%
• Elevator Cloud IoT integration: continuous wireless telemetry monitoring vibration profiles, machine temperatures, brake switch statuses, and door cycles for predictive maintenance scheduling
• Global safety certification: full compliance with European EN 81-20/50 elevator safety directives, integrated unintended car movement protection (UCMP), brake shoe microswitch monitoring, and automatic emergency battery rescue

STEP Electric Integrated Synchronous Elevator Door Operators and Controllers

The elevator car door operator and intelligent controller systems engineered by STEP Electric represent state-of-the-art mechatronic assemblies powered by permanent magnet synchronous motors (PMSM) and integrated vector drives.

The door controller dynamically computes smooth S-curve acceleration and deceleration velocity profiles, ensuring near-silent door travel without mechanical impact at limit stops.

Featuring automated doorway width measurement, continuous car door mass calibration, and adaptive torque compensation against hoistway wind drafts or sill debris resistance, STEP door systems guarantee passenger comfort and rapid elevator boarding cycles.

• Direct-drive synchronous technology: PMSM brushless direct-drive timing belt transmission operating with acoustic noise ratings measured below 48 dBA
• Automated doorway commissioning: one-touch self-learning cycle determining door clear opening width across 600 mm to 3000 mm, door leaf weight, and track rolling friction without requiring hand-held terminals
• Passenger entrapment protection: dynamic kinetic energy and closing force limitation complying with safety codes, integrating infrared multi-beam light curtains and touchless electronic reversal
• Universal electrical interfaces: compatible with discrete I/O signal interfaces, onboard CAN-bus, and Modbus networks accommodating both center-opening and side-opening telescopic elevator doors

STEP Electric Ω6 (Omega 6) Precision AC Servo Drives and Ω6-OMP High-Performance Motors

The 6th generation Ω6 (Omega 6) AC servo drive family by Shanghai STEP Electric Corporation establishes an ultra-responsive motion control platform engineered for CNC machine tools, semiconductor manufacturing, automated packaging machinery, and multi-axis robotics.

The portfolio features flagship Ω6-A high-precision drives, compact Ω6-C general automation units, dual-axis Ω6-W drives designed for synchronized gantry axes, low-voltage DC-fed Ω6-D drives (24–48 VDC) for AGV/AMR autonomous mobile robots, and cost-effective Ω6-E drives.

Paired with Ω6-OMP servomotors integrating 23-bit optical absolute encoders, the platform achieves sub-micron positional repeatability and dynamic stability under rapid reversing duty cycles.

• Loop bandwidth and dynamic response: speed loop bandwidth reaching 3.2 kHz, current loop sampling frequency of 16 kHz, and automatic vibration suppression incorporating 5 adaptive notch filters
• Dual-axis Ω6-W architecture: single modular enclosure driving two independent servomotors with deterministic hardware synchronization, saving up to 40% cabinet enclosure space and sharing DC bus regenerative energy
• Ω6-OMP servomotor performance: rated operating speeds of 1500, 2000, and 3000 rpm across rated torques from 0.64 Nm to 143 Nm, housed in rugged IP67 enclosures rated for 5G vibration endurance
• Industrial motion networking: ultra-fast EtherCAT synchronization cycle times down to 125 µs, compliant with CANopen CiA 402 drive profiles, Profinet RT/IRT industrial Ethernet, and traditional pulse/direction command modes

STEP Electric 6-Axis Articulated Industrial Robots: SR, SP, SA, and SD Series (Payloads from 1 kg to 600 kg)

The articulated multi-axis industrial robot lineup manufactured by Shanghai STEP Electric Corporation encompasses high-rigidity 6-axis robotic arms spanning payloads from 1 kg to 600 kg engineered for metal fabrication, automotive stamping, automated warehousing, and electronic assembly.

Controlled by STEP proprietary SRC real-time motion controllers and powered by preloaded cycloidal and harmonic joint drives, the lineup divides into general-purpose SR series robots, arc and laser welding SA series units, heavy-payload SP palletizing manipulators lifting up to 600 kg, and compact

SD tabletop arms featuring repeatable precision down to ±0.02 mm.

• Payload capacity and work envelope: continuous handling capacities from 1 kg up to 600 kg with operating reach radii ranging from 540 mm (desktop SD series) to 3200 mm (heavy-payload SR/SP manipulators)
• SRC modular robot controller: real-time multi-axis motion planning core, integrated PLC ladder logic, fieldbus communications, and an intuitive touchscreen teach pendant supporting online and offline trajectory teaching
• SA dedicated robotic welding package: integrated arc welding software suites supporting wire touch seam location, through-the-arc seam tracking (TAST), multipass welding routines, and coordinated multi-axis welding positioner integration
• Kinematic precision and repeatability: high-rigidity cycloidal and strain wave gearboxes across all six rotational axes delivering dependable pose repeatability between ±0.02 mm and ±0.05 mm

STEP Electric High-Speed SCARA Robots: Yunxia, AR, HR, WR, and YR Series (Payloads up to 50 kg, Cycle from 0.24 s)

The 4-axis SCARA (Selective Compliance Assembly Robot Arm) robotic portfolio engineered by Shanghai STEP Electric Corporation represents an industry benchmark across 3C consumer electronics, lithium battery manufacturing, medical packaging, and high-speed material handling.

The product lineup encompasses the ultra-fast flagship Yunxia series, standard AR and high-speed HR tabletop robots, wall-mounted WR models, ceiling-suspended inverted FR configurations, heavy-duty YR models handling payloads up to 50 kg, cleanroom-certified ARJ variants, and dedicated automated

screwdriving PTR units.

• High-speed throughput and cycle benchmarks: standard pick-and-place cycle times down to 0.24 seconds (25-300-25 mm test path), payload capabilities up to 50 kg, and working reach radii from 400 mm to 1200 mm
• Versatile installation configurations: standard floor/tabletop pedestals (AR/HR series), ceiling-suspended overhead mounting (FR series) for compact workcell layouts, and wall-mounted setups (WR series)
• Specialized operational variants: cleanroom models certified for ISO Class 5 clean manufacturing (ARJ-L10-20) and integrated automated screwdriving heads (PTR series) with closed-loop depth and torque control
• Machine vision coordination: seamless integration with STEP Vision camera systems enabling high-speed conveyor tracking and real-time pick-and-place orientation on continuously running production belts

STEP Electric Semiconductor Wafer Handling Robots: CA, TA, TBA, VA, and AHY Series (2 to 12-Inch Wafers)

Specialized semiconductor wafer-handling robotic systems developed by Shanghai STEP Electric Corporation provide micro-contamination-free automated wafer transfer and carrier pod loading across 2-inch to 12-inch (50 mm to 300 mm) semiconductor silicon, silicon carbide (SiC), and gallium nitride

(GaN) fabrication processes.

The lineup spans atmospheric front-end transfer robots (CA single-axis, DFA dual-axis, FA/FBA finger grippers, TA single-arm, and TBA dual-arm robots paired with optical wafer aligners) alongside vacuum-rated transfer robots (VA and direct-drive AHY series) engineered for ultra-high vacuum

deposition, plasma etching, and epitaxial processing chambers.

• Substrate dimensions and materials: reliable transport of 2, 4, 6, 8, and 12-inch wafers fabricated from single-crystal silicon, silicon carbide (SiC), and gallium arsenide (GaAs)
• Atmospheric wafer handling series: CA, DFA, and high-throughput TBA dual-arm robot configurations equipped with integrated optical notch/flat aligners for EFEM front-end wafer inspection modules
• Vacuum processing manipulators: VA and AHY direct-drive vacuum robots incorporating magnetic fluid rotary feedthroughs operating in high vacuum environments down to 10⁻⁶ Pa and chamber temperatures up to 250 °C
• Ultra-clean environmental compliance: rigorous adherence to SEMI international semiconductor manufacturing standards with particle emission performance certified to ISO Class 1 cleanliness