Siemens 6ES5470-7LB11 – Analog Output Module for Process Actuators

The Siemens 6ES5470-7LB11 converts digital commands into continuous analog signals for field devices. This analog output module measures 250 mm in depth and 25 mm in width. It fits standard SIMATIC S5 rack slots without any modifications. The unit weighs 0.49 kg, making installation quick and straightforward.

Channel Configuration and Output Ranges

This analog output module provides 4 isolated output channels on its front panel. The Siemens 6ES5470-7LB11 delivers voltage outputs from 0 to 10V DC. It also provides current outputs from 0 to 20 mA or 4 to 20 mA. Each channel includes individual digital-to-analog converters for precision. Channel-to-channel isolation prevents ground loops between different field devices.

Conversion Accuracy and Response Time

The module uses 12-bit resolution for accurate signal generation across all channels. The Siemens 6ES5470-7LB11 achieves a conversion accuracy of ±0.1 percent of full scale. It updates all four outputs within 5 milliseconds for smooth control. The settling time for a full-scale step change reaches 2 milliseconds. Each channel includes a short-circuit protection circuit for output safety.

Internal Architecture and Component Layout

The module contains three separate circuit boards inside its metal housing. One board handles digital-to-analog conversion, while another manages backplane communication. The third board provides output amplification and isolation. The Siemens 6ES5470-7LB11 includes 8 screw terminals for field wiring connections. A 48-pin edge connector interfaces with the S5 backplane for power and data. The module stores 82 µF of capacitance for power supply filtering.

Power Requirements and Environmental Tolerance

The Siemens 6ES5470-7LB11 draws 150 mA at 5V DC from the backplane supply. It requires external 24V DC power for output circuit operation. The module operates reliably from 0°C to 60°C ambient temperature. It tolerates humidity levels up to 95 percent without any condensation issues. The unit withstands vibration up to 2g from 10 to 500 Hz.

Below is a complete summary of its technical specifications.

The Siemens 6ES5470-7LB11 replaces older analog output cards in SIMATIC S5 systems. You do not need any rewiring or configuration changes during replacement. This module also supports hot-swapping in compatible rack configurations. Consequently, it controls valves, actuators, and drives in continuous process applications.