Lenze EVS9321-EP Position Controller 9300

Lenze EVS9321-EP Servo Position Controller

Product Introduction

The Lenze EVS9321-EP functions as a dedicated servo position controller. It belongs to the well-known 9300 series. You can mount this unit inside a standard industrial panel.

Mains voltage ranges from 320 to 528 V AC. Rated voltages are 400V and 480V. Therefore, the Lenze EVS9321-EP works globally without additional transformers. Motor power reaches 0.37 kW or 0.5 HP for a 4-pole asynchronous motor.

Technical Specifications

Mains current depends on filtering. With a mains filter installed, current draws 1.5 A. Without the filter, it draws 2.1 A.

Output power on terminals U, V, W at 8 kHz switching frequency equals 1.0 kVA for 400V and 1.2 kVA for 480V. Meanwhile, the DC bus output power (+UDC, -UDC) reaches 2.0 kW for both voltage levels.

Output current also varies with switching frequency. At 8 kHz, output current is 1.5 A for both 400V and 480V. At 16 kHz, it drops to 1.1 A.

Power loss measures 100 watts. This allows natural convection cooling in most panel layouts.

Performance Features

The EVS9321-EP operates as a built-in unit. It provides precise position control for servo systems. Typical applications include indexing tables, pick-and-place machines, and winding stations.

Switching frequency selection gives you flexibility. Use 8 kHz for higher output current. Switch to 16 kHz for quieter motor operation, but with reduced current capacity.

Mechanical and Environmental Data

Mass of the Lenze EVS9321-EP is 3.5 kg. For shipping, gross weight is 4.2 kg including protective packaging.

Mounting is straightforward. The panel-mounted design uses four screws through the chassis flanges. Ensure adequate clearance for airflow and cable entry.

Ambient temperature for full rating ranges from 0°C to 45°C. Above this, derating applies at 1.5% per degree Celsius up to 55°C maximum.

Installation Guidelines

First, mount the EVS9321-EP vertically on a flat metal backplate inside the control panel. Second, connect the 400V or 480V mains to terminals L1, L2, L3. Third, attach the motor leads to terminals U, V, W.

Additionally, decide whether to use a mains filter. For EMC compliance in residential or light industrial areas, install the filter. Without it, the Lenze EVS9321-EP draws higher current but may emit more interference.

Finally, wire the encoder feedback and control signals using shielded cables. Ground the shield at both ends for best noise immunity.

Packaging List

• 1 x EVS9321-EP servo position controller unit

• 1 x quick start guide

• 4 x chassis mounting screws

• 1 x terminal label sheet

No certificate or warranty document is included in the package.

Shipping Methods

We ship worldwide via Fedex, UPS, or DHL. Tracking numbers are provided within 24 business hours.

Frequently Asked Questions (FAQ)

1. Can the EVS9321-EP run a synchronous servo motor?
Yes, the Lenze EVS9321-EP controls both asynchronous motors and permanent magnet synchronous motors. Change the motor type parameter accordingly.

2. What is the difference between 8 kHz and 16 kHz operation?
At 8 kHz, output current is 1.5 A. At 16 kHz, it drops to 1.1 A. However, the higher frequency reduces audible motor noise. The EVS9321-EP lets you choose based on your priority.

3. Do I absolutely need a mains filter?
No. The Lenze EVS9321-EP runs without a filter. Mains current then becomes 2.1 A instead of 1.5 A. Use a filter only if your site requires strict EMC compliance.

4. What is the maximum output frequency of this controller?
The EVS9321-EP can output up to 599 Hz. This allows motor speeds well above base speed in field weakening range.

5. How do I reset a fault on the EVS9321-EP?
Apply a rising edge to the reset input terminal. Alternatively, cycle the 24 V control supply. The Lenze EVS9321-EP clears most faults immediately after removing the cause.