Introduction

Introduction 1:
EL7201-901x
Introduction 2:
EL7211-901x, EL7221-901x

Servo motor terminals with OCT and STO input

The servo-motor EtherCAT terminals EL7201-901x (48 VDC, 2.8 Arms), EL7211-901x (48 VDC, 4.5 Arms) and EL7221-901x (48 VDC, 7 … 8 Arms) with integrated absolute value interface, offer high servo performance in a very compact design. The EL72x1-901x were designed for the motor types of the AM81xx series from Beckhoff Automation.

The fast control technology, based on field-orientated current and PI speed control, supports fast and highly dynamic positioning tasks. The monitoring of numerous parameters, such as overvoltage and undervoltage, overcurrent, terminal temperature or motor load via the calculation of an I²T model, offers maximum operational reliability.

EtherCAT, as a high-performance system communication, and CAN-over-EtherCAT (CoE), as the application layer, enable ideal interfacing with PC-based control technology.
The latest power semiconductors guarantee minimum power loss and enable feedback into the DC link when braking.

The LEDs indicate status, warning and error messages as well as possibly active limitations.

With the One Cable Technology (OCT) the encoder cable is omitted by transmitting the signals of the encoder digitally via the existing motor cable. The option to read the electronic type plates of suitable motors from the AM81xx series enables a plug-and-play solution for maximum convenience during commissioning.

The EL72x1-901x provides an STO input with which the motor connected to the terminal can be switched torque-free. This STO input is connected to a safe output of an EL2904.

Performance Level d, Category 3 according to DIN EN ISO 13849-1:2015 is attained for the SFO safety function of the EL72x1-901x together with an EL2904.

Introduction 3:

Recommended TwinCAT version

In order to be able to utilize the full power of the EL72x1-901x, we recommend using the EL72x1-901x with TwinCAT 2.11 R3 or higher!

Introduction 4:

Mandatory hardware

The EL72x1-901x must be operated with a real-time capable computer and distributed clocks!

Introduction 5:

Approved motors

The EL72x1-901x may be operated only with the following Beckhoff motors.

- AM8111-xF1x, AM8112-xF1x, AM8113-xF1x, AM8121-xF1x, AM8122-xF1x, AM8131-xF1x, AM8132-xJ1x, AM8133-xJ1x, AM8141-xJ1x

- AM8111-xF2x, AM8112-xF2x, AM8113-xF2x, AM8121-xF2x, AM8122-xF2x, AM8131-xF2x, AM8132-xJ2x, AM8133-xJ2x, AM8141-xJ2x

Introduction 6:

Operation of the EL7221-901x with fan cartridge ZB8610

Due to the increased thermal load, the EL7221-091x must only be operated in conjunction with the fan cartridge ZB8610 in order to avoid malfunctions.

Quick links

Connection instructions

Configuration instructions

Application example