E70ACMSE0204SA1ETR Lenze i700 Double Inverter Module

Product Overview

The E70ACMSE0204SA1ETR (E70ACMSE0204SA1ETR) is a high-density "Double Inverter" module from the Lenze i700 series, designed specifically for multi-axis systems powered by a common DC bus. This state-of-the-art unit integrates two independent drive power stages into a single compact housing, each capable of a 5 A rated current. Engineered for DC-coupled drive architectures operating between 565 and 675 VDC, the E70ACMSE0204SA1ETR significantly reduces the installation footprint and wiring complexity compared to traditional single-axis drives. It comes standard with dual resolver feedback interfaces, making it an ideal solution for synchronized motion in robotic handling, multi-stage packaging lines, and textile processing. As an active part of the Lenze 9400-series ecosystem, it combines German engineering precision with the "Safe Torque Off (STO)" safety function to ensure maximum operational security and system uptime.

Technical Configuration

The E70ACMSE0204SA1ETR architecture is optimized for centralized control via EtherCAT, providing deterministic synchronization between the two internal axes. The "Double Inverter" design allows both axes to share a single DC bus connection, facilitating energy exchange between motoring and regenerating axes. The unit features integrated resolver evaluation for high-accuracy position feedback and is built with a robust IP20 chassis. The "SA" designation typically refers to the integrated Safety Address or specific safety configuration, while the "ETR" suffix denotes the EtherCAT communication protocol, which is native to the i700 series for seamless integration into high-speed automation networks.

Technical Specifications

Technical FAQs

What are the primary advantages of the i700 Double Inverter over single-axis drives?

The double inverter configuration reduces the number of DC bus supply components and occupies up to 50% less space on the DIN rail. It also simplifies the thermal management of the cabinet by consolidating heat dissipation into fewer units.

Does this unit require a separate power supply for the control electronics?

Yes, while the power stage runs off the 565/675 VDC bus, the control electronics and safety circuits typically require a separate 24 VDC supply to maintain communication and safety monitoring even when the high-voltage DC bus is discharged.

How is the STO safety function implemented on a double-axis unit?

The STO (Safe Torque Off) mechanism on the E70ACMSE0204SA1ETR is designed to safely prevent the drive from restarting by cutting power to the motor's rotating field. Depending on the configuration, STO can often be triggered independently for each axis or globally for the entire module.

Engineering & Installation Guide

• DC Bus Connection and Fusing: Ensure that the DC bus connections (typically labeled +UG and -UG) are made with short, low-inductance wires. Given the 565/675 V operating range, high-speed semiconductor fuses must be used on the DC supply side to protect the inverter's power stage against bridge-layer faults.

• Resolver Feedback Wiring: To maintain signal integrity for the 2 x 5 A outputs, resolver cables must be high-quality, double-shielded twisted pairs. Route these cables away from the DC bus and motor power lines to prevent electromagnetic interference from causing position "jitter" or feedback faults.

• Cooling and Mounting: The i700 series is designed for vertical mounting. Ensure the top and bottom ventilation slots are not obstructed. Since this module houses two inverters, monitor the total heat loss (approx. 100-150W at full load) and ensure the cabinet’s internal circulation is sufficient to keep the intake air below 45 Celsius.