EVS9321-ES - Servo controller - LENZE

Lenze EVS9321-ES brushless controller - 9300 Series

The EVS9321-ES brushless controller from the Lenze 9300 series is a positioning servo drive designed for industrial environments demanding fine control of position, speed and torque. Engineered to drive brushless and 4-pole asynchronous motors of low power, it covers applications such as packaging, conveying, assembly, printing and light material handling. Its architecture ensures stable dynamic response, precise closed-loop control and consistent integration into automation architectures. The three-phase supply 320 to 440 V AC and the DC bus 450 to 620 V DC provide an operating range compatible with 400 V and 480 V networks, while the 8 kHz switching frequency ensures smooth motor control. With a typical power of 0.37 kW (≈ 0.5 HP) and a nominal current of 1.5 A, the EVS9321-ES is a reliable solution for compact axes requiring integrated positioning functions and repeatable implementation across a machine fleet.

Technical specifications

• Manufacturer reference: EVS9321-ES
• Range: Lenze 9300 Series, servo drives
• Manufacturer: Lenze
• Type: Brushless controller, positioning drive for synchronous and asynchronous motors
• Supply voltage: 320 to 440 V AC three-phase, 50/60 Hz, DC bus 450 to 620 V DC
• Rated power: 0.37 kW (≈ 0.5 HP)
• Rated output current: 1.5 A
• Maximum current: up to 2.25 A for short-duration overcurrent conditions
• Output voltage: up to 94% of Un with line choke
• Control mode: position, speed and torque control, integrated positioning functions
• Switching frequency: 8 kHz
• EMC compliance: EN 61000-3-2, EN 61800-3

Overview of the Lenze 9300 series

The Lenze 9300 series groups servo drives dedicated to motion control applications where precision, repeatability and axis synchronization are critical. Deployed across a wide installed base, the range meets the needs of integrators and maintenance teams looking for a homogeneous platform for positioning, indexing and speed control. The control architecture can drive brushless and 4-pole asynchronous motors, making migration and standardisation simpler in heterogeneous workshops. The EVS9321-ES sits in the low-power segment of this series, ideal for auxiliary axes, precision conveyors, low-inertia winders and mechanical assemblies requiring controlled dynamics. The integrated positioning functions simplify implementation of indexing or synchronization applications without needing an external CNC for every elementary action. Lenze application diagrams, EVS/9300 documentation and the manufacturer's commissioning tools speed up configuration of control loops and enhance repeatability across the production cycle.

• Axis positioning: management of motion and indexing profiles with closed-loop feedback
• Speed and torque regulation: stable setpoint holding for sustained cycle rates

The EVS9321-ES targets applications where precision and stability requirements outweigh installed power. It provides a robust foundation for new machines as well as retrofits, with consistent parameter logic across the entire 9300 family.

Industrial applications

This brushless controller integrates into many machine configurations where compactness, motion accuracy and availability are required.

• Packaging: tray indexing, gripper drives, synchronization of belts and rollers
• Conveying and intralogistics: orientation axes, balancers, variable-speed conveyors
• Assembly and light robotics: manipulators, tool changers, low-inertia indexing stations
• Printing and labelling: reel drives, registration, web tension control
• Process automation: motorised valves, volumetric dispensers, step dosing systems

Integration and communication

The EVS9321-ES integrates into architectures controlled by programmable logic controllers, with I/O exchanges and motion setpoints. The 9300 series accepts optional communication cards according to infrastructure needs, easing interfacing with common fieldbuses at cell level. This modularity supports integration on new installations as well as modernisations while retaining existing maintenance practices.

Commissioning is carried out via the operator panel and the manufacturer's software tools, with parameter organisation by function, access to control loops and EMC diagnostics. The integrated positioning functions allow creation of motion profiles and management of setpoints without overloading the PLC. Compatibility with brushless and asynchronous motors simplifies spare parts stocking and rationalises gain settings, reducing downtime during planned replacements.

Availability and warranty

The Lenze EVS9321-ES brushless controller is available as supply, exchange unit or repair depending on the condition of your equipment. Each refurbished supply unit is bench-tested according to quality procedures and delivered with warranty. Standard Exchange Industry ships within 24 to 72 hours to over 120 countries and provides a technical team to verify electrical and functional compatibility with your motor and installation. In case of obsolescence, an equivalent from the 9300 series or a suitable replacement solution can be proposed to maintain service continuity. For any request, specify the exact reference, motor power, supply range and required control mode to ensure a reliable selection and smooth commissioning.