EVS9331-EP - Position controller - LENZE

Lenze EVS9331-EP brushless controller, 9300 series

The reference EVS9331-EP belongs to the Lenze 9300 series, known for precise control of synchronous brushless servomotors in automation and robotics applications. Designed for fine regulation of position, speed and torque, this controller integrates into systems where repeatability, dynamics and process stability are critical. For maintenance teams, integrators and engineering departments, the 9300 range offers a robust solution for axis upgrades, replacements in case of obsolescence and uninterrupted service on running lines. The EVS9331-EP brushless controller is used as a dedicated servo drive for synchronous motors, with motion-control-oriented command logic, compatible with architectures driven by a programmable logic controller or numerical control. Implementation follows a standardized procedure for parameterisation, motor identification and loop optimisation to achieve a stable response and positioning consistent with cycle requirements. The availability of series communication modules enables integration into the site's fieldbus, while the mechanical form factor and I/O logic are designed for fast maintenance interventions, limiting unplanned downtime.

Technical specifications

• Manufacturer reference: EVS9331-EP
• Range: Lenze 9300, brushless controllers for synchronous servomotors
• Manufacturer: Lenze
• Type: Servo drive, position, speed and torque control
• Supply voltage: three-phase 50/60 Hz, range according to 9300 series variant
• Rated power: depends on motor configuration and version, refer to the nameplate
• Nominal output current: model-dependent, defined by the EVS variant of the 9300 series
• Output voltage: three-phase for synchronous brushless motors, sized to the axis
• Control mode: open- or closed-loop control, position, speed and torque regulators
• I/O interfaces: digital and analogue inputs for execute commands, status feedback and basic machine safety
• Switching frequency: configurable according to the application and motor noise constraints, model-dependent
• Protection rating: typically IP20 on the chassis, depending on version and cabinet environment

Overview of the Lenze 9300 series

The Lenze 9300 series groups controllers dedicated to synchronous servomotor control in demanding motion control applications. Widely used across industry, it is commonly selected for fast positioning axes, conveyor synchronisation, indexing movements and processes requiring a stable trajectory. Its parameterisation and control logic enable reproducible performance, with clear management of ramps, motion profiles and machine states. The modular architecture of the range allows the addition of I/O and communication cards, facilitating interoperability with the PLC and operation of existing equipment without a complete rewrite of programs. When replacing equipment, maintenance technicians value the continuity of tuning principles and the availability of compatible components, which reduces line downtime.

• Positioning and synchronization functions: suited to repeated movements, indexing and high-cycle applications, with consistent torque and speed regulation.
• Multi-axis integration: coordination of secondary and auxiliary axes possible, interacting with cell logic driven by the programmable logic controller.

The EVS9331-EP model follows this motion-control-oriented approach. It provides a servo drive base for brushless motors when the application requires stable precision and well-controlled dynamics, while remaining compatible with the 9300 series' parameterisation and diagnostic philosophy.

Industrial applications

The EVS9331-EP brushless controller is suitable for many environments where trajectory consistency and cycle-time control are essential. Typical use cases include dosing axes, indexing, feed and roll drives in machines that must maintain repeatable performance and easy maintenance.

• Machine tools and CNC machining: secondary axes, feeds, accessory positioning and tool changers.
• Packaging and filling: indexing, conveyor synchronisation, drive for placing and labelling heads.
• Material handling and intralogistics: control of translation axes, lifts, shuttles and indexing tables.
• Textile and printing: tension control, winding, unwinding and web positioning.
• Light robotics and assembly: tooling actuators, controlled screwdrivers, positioners.

Integration and communication

Integration into existing architectures is eased by the 9300 series' communication modules. Depending on the chosen configuration, the controller can join common industrial fieldbuses via optional cards, for example PROFIBUS-DP, CANopen, DeviceNet or INTERBUS. This approach allows exchange of setpoints, statuses and diagnostics with the programmable logic controller while preserving cell logic and existing HMI. Local I/O enable direct commands, controlled stops and basic interlock handling close to the axis.

Commissioning follows a structured procedure, from motor identification to tuning of the speed and torque controllers. Parameterisation can be performed via a local panel, the manufacturer’s software tool or over the fieldbus, according to the site strategy. This methodology limits performance drift and helps maintain process stability. In contexts where a classic variable frequency drive is insufficient, the 9300 series servo drive provides the command granularity required for demanding motion profiles.

Availability and warranty

Standard Exchange Industry offers the reference EVS9331-EP supplied to match your industrial needs, with units tested on a bench and covered by a warranty. Depending on urgency and maintenance strategy, you can benefit from standard exchange, refurbished supply or a repair of your existing equipment. Shipping is available within 24 to 72 hours to over 120 countries. Our technical teams assist in confirming compatibility with your brushless motor, specifying required communication modules and securing recommissioning. This approach aims to reduce downtime, protect the machine investment and ensure continuity of operations while respecting safety and production quality constraints.