Lenze EVS9323-EP 9300-Series Servo Position Controller

Designed for precise motion control and dynamic positioning tasks in automated industrial environments, the Lenze EVS9323-EP serves as a high-performance servo position controller within the 9300-Series family. This unit integrates seamlessly into centralized or decentralized control architectures, providing robust closed-loop control for synchronous and asynchronous AC servo motors. Engineered with an IP20 protection rating, it is optimized for vertical installation within protected electrical control cabinets, ensuring reliable thermal management and long-term operational stability in demanding manufacturing processes.

Key Features

• Integrated Positioning Control: Built-in profile generators and position registers support complex motion profiles, homing runs, and target-positioning sequences without requiring external high-speed PLC modules.
• System Bus Interface: Native CAN system bus integration enables high-speed communication between multiple drives, controllers, and supervisory HMI systems.
• Flexible Feedback Support: Compatible with standard resolver systems and high-resolution encoders for precise speed and position feedback.
• Thermal Management: Designed for vertical mounting with optimized heatsink geometry to facilitate efficient natural or forced convection cooling.
• Modular Expansion: Supports pluggable communication modules (AIF) for integration into PROFIBUS, Interbus, or other industrial fieldbus networks.

Applications

• Packaging Machinery: High-speed indexing, rotary cutters, and electronic gearing systems.
• Material Handling: Automated storage and retrieval systems (ASRS), gantry cranes, and high-speed transfer carriages.
• Assembly & Robotics: Multi-axis pick-and-place systems, Cartesian robots, and precise rotary indexing tables.
• Textile Processing: Tension-controlled winding, unwinding, and synchronized feed-axis control.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

The EVS9323-EP is specifically configured as a position controller. It should not be confused with the EVS9323-ES (speed controller variant) or the EVF9323 (frequency inverter). When replacing older hardware revisions, verify that the firmware version of the replacement unit matches or exceeds the original to ensure compatibility with existing Global Drive Control (GDC) parameter sets and fieldbus configurations.

Application Pitfalls & Engineering Notes

In applications involving rapid deceleration cycles or high-inertia loads, the internal DC-bus capacitance may be insufficient to absorb regenerative energy. To prevent overvoltage faults (typically indicated by fault code OU), an external brake resistor must be sized and connected across the appropriate power terminals. Ensure adequate clearance of at least 100 mm above and below the drive inside the cabinet to prevent thermal accumulation.

Commissioning & Wiring Tips

Always use double-shielded twisted-pair cabling for the resolver feedback (X11) and CAN system bus (X4) interfaces. The shield must be grounded with low-impedance connections directly to the mounting plate using grounding clamps. Avoid routing control and feedback cables parallel to high-voltage motor power cables to mitigate electromagnetic interference (EMI) issues.

Installation Guidelines