Siemens 6ES5464-8MD11 Analog Input Module

High-Precision Analog Measurement for S5 Systems

The Siemens 6ES5464-8MD11 analog input module provides high-precision signal acquisition for S5-135U and S5-155U PLC systems. This module converts analog signals from sensors and transmitters into digital values for the CPU. Process control applications depend on this module for accurate and reliable measurement data.

Input Specifications and Electrical Characteristics

This analog input module features 8 differential input channels with 12-bit resolution for high accuracy. The inputs accept standard signals ranging from 0 to 10 V, 0 to 20 mA, or 4 to 20 mA. Each channel includes a dedicated amplifier with software-selectable gain settings. Furthermore, the module provides 1500 V AC isolation between the field signals and the backplane.

Parameter	Specification
Brand	Siemens
Model	6ES5464-8MD11
Number of Inputs	8 (differential)
Input Resolution	12 bits (4096 steps)
Input Ranges (selectable)	0–10 V, 0–20 mA, 4–20 mA
Accuracy (25°C)	±0.1% of full scale
Temperature Drift	±50 ppm/°C
Conversion Time	10 ms (all channels)
Isolation Voltage	1500 V AC
Dimensions (W x H x D)	50 mm x 125 mm x 118 mm
Weight	0.42 kg
Power Consumption	5 V DC at 250 mA
Compatible CPUs	S5-135U, S5-155U
Operating Temperature	0°C to 55°C

Signal Conditioning and Filtering

The Siemens 6ES5464-8MD11 provides software-selectable digital filtering on all input channels. Users can select filter frequencies from 10 Hz to 1 kHz via software parameters. The module also performs automatic offset and gain compensation for accurate readings. Additionally, the inputs include overvoltage protection that clamps signals at safe levels.

Configuration and Calibration

Users can configure each input channel independently for voltage or current operation. The module stores calibration parameters in non-volatile memory, retaining them during power loss. A built-in reference voltage source enables easy recalibration in the field. Furthermore, the module provides diagnostic information for each channel, including overrange detection.

Physical Design and Installation

This analog input module features a 50 mm housing that fits standard S5-135U and S5-155U rack slots. The unit weighs approximately 0.42 kilograms, allowing straightforward installation. A 32-pin front connector provides access to all input terminals. The module uses screw-type terminals that accept wires from 0.5 mm² to 2.5 mm².

System Integration and Addressing

You can install this analog input module in any standard S5-135U or S5-155U rack slot. The module automatically maps its 8 input channels to consecutive addresses in the CPU’s I/O table. Users can read the converted values directly from the assigned addresses. Moreover, the module supports both local and remote rack configurations.

Diagnostic Features and Status Monitoring

Front-panel LEDs indicate power, channel status, and error conditions for each input. The module detects open-circuit and out-of-range signals on all channels. A built-in self-test routine verifies the conversion circuitry during startup. Furthermore, the module stores diagnostic information about channel faults and calibration status.