Product Overview

The EVS9322-EK (EVS9322-EK) is a high-precision 0.75 kW servo controller from the specialized Lenze 9300-Series, specifically engineered for "Servo Cam" applications. This unit is designed to replace complex mechanical cams with flexible, software-driven electronic cam profiles, making it an essential component for high-speed packaging machines, labeling equipment, and synchronized printing presses. By utilizing the integrated camming logic, the EVS9322-EK allows for non-linear motion synchronization between a master and slave axis with micro-second precision. Although classified in the "Phase-Out" stage, this German-engineered controller remains a mechanical and logic necessity for maintaining the operational integrity of existing production lines that require complex, repeatable motion patterns and high-dynamic response within a compact IP20-rated enclosure.

Technical Configuration

The EVS9322-EK architecture is optimized for the execution of complex mathematical motion laws. The "EK" designation identifies it as the "Electronic Cam" variant, featuring internal firmware capable of storing and interpolating up to 16 cam profiles with 1024 points each. With a rated power output of 0.75 kW, it provides the necessary torque for medium-inertia loads. The hardware is housed in a slim-line chassis measuring 35.00 x 25.00 x 7.80 cm, designed for side-by-side mounting in control cabinets. It supports multiple feedback interfaces and features integrated monitoring for short circuits, DC bus overvoltage, and motor thermal protection. This configuration ensures that even the most complex camming sequences are executed with zero lag and maximum synchronization accuracy between the slave drive and the reference master signal.

Technical Specifications

Technical FAQs

What is the advantage of the "EK" Cam Profiler over a standard servo drive?

The EVS9322-EK allows for the creation of non-linear motion relationships (e.g., a slave axis that speeds up and slows down within a single rotation of the master). This is handled entirely within the drive's firmware, eliminating the need for expensive mechanical cams or high-speed calculations in the PLC.

Can I upload existing cam profiles from a failing unit to a new one?

Yes. By using the Lenze Global Drive Control (GDC) software or a keypad module, you can upload the "Cams" and "Parameter Sets" from your current drive and download them into a replacement unit. This ensures that the mechanical timing of your machine remains identical.

What feedback systems are compatible with the EVS9321-EK?

The 9300-series typically supports resolvers as standard, but it can be configured to work with incremental encoders or SinCos encoders via the X5 and X6 terminal interfaces, which is vital for high-precision camming tasks.

Engineering & Installation Guide

Master-Slave Synchronization and Shielding:

In electronic cam applications, the signal integrity of the master reference (typically an external encoder or a virtual master via fieldbus) is paramount. Use high-quality, twisted-pair shielded cables for all encoder connections. Ensure the shield is grounded at both ends using 360-degree EMC clamps. Any signal jitter on the master line will result in mechanical vibration in the 0.75 kW slave motor, leading to premature wear of the drive train.

Thermal Strategy for High-Dynamic Cycles:

Electronic camming often involves rapid acceleration and deceleration phases. These cycles generate significant heat in the power stage. Ensure a minimum vertical clearance of 100 mm is maintained. If the drive is executing more than 60 cycles per minute, verify that the cabinet cooling can maintain an ambient temperature below 40 deg C to avoid "OH" (Overheat) fault trips.

Braking Energy Considerations:

Because camming profiles frequently involve rapid deceleration, the DC bus of the EVS9322-EK may experience voltage spikes. It is highly recommended to install an external braking resistor. This protects the internal capacitors and ensures that the drive can follow the cam profile's "deceleration curve" without tripping on an overvoltage fault, especially during emergency stop conditions.