Siemens 6ES5466-4UA11 Analog Input

Precision Signal Acquisition for SIMATIC S5 Systems

The Siemens 6ES5466-4UA11 delivers high-accuracy analog input processing for the SIMATIC S5 programmable controller family. This module accommodates up to 8 differential analog channels, each supporting 4-20 mA current loops or 0-10 V voltage signals. Its compact housing measures 250 mm in height, 25 mm in width, and 160 mm in depth, fitting standard S5 rack slots efficiently. The total weight reaches approximately 0.5 kg, making it a lightweight addition to control cabinets.

Each channel employs a 12-bit successive approximation ADC for reliable conversion across the entire signal range. The following table details the complete technical specifications for this analog input solution:

Parameter	Specification
Product Brand	Siemens
Product Model	6ES5466-4UA11
Product Category	Analog Input Module
Platform Compatibility	SIMATIC S5
Number of Channels	8 (differential)
Input Signal Types	4-20 mA, 0-10 V
Resolution	12-bit
Conversion Time	25 ms per channel
Dimensions (H x W x D)	250 mm x 25 mm x 160 mm
Weight	0.5 kg
Supply Voltage	5 V DC (from backplane)
Power Consumption	2.5 W typical
Input Impedance	250 Ω (current), 50 kΩ (voltage)
Common Mode Rejection	80 dB minimum
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +85°C
Isolation Voltage	1500 V AC (channel-to-backplane)

Channel Configuration and Signal Conditioning

The 8 differential channels offer excellent common-mode noise rejection for long cable runs. Engineers can mix current and voltage inputs across different channels without hardware adjustments. Built-in RC filters attenuate high-frequency noise from variable-frequency drives and welding equipment. This filtering ensures stable readings in electrically harsh industrial environments.

Input Impedance and Sensor Compatibility

Current inputs present a 250 Ω burden resistor, matching standard 4-20 mA transmitter specifications. Voltage inputs provide 50 kΩ impedance, minimizing loading effects on field sensors. This high impedance preserves signal integrity from devices with limited drive capability. The module therefore accommodates diverse field instruments without signal degradation.

System Integration and Environmental Tolerance

The 6ES5466-4UA11 draws operating power directly from the S5 backplane at 5 V DC, eliminating external supplies. Common mode rejection of 80 dB minimum reduces errors from ground-potential differences between remote sensors. Operating temperatures from 0°C to +60°C cover standard industrial control rooms without derating. A 1500 V AC isolation barrier protects the backplane logic from field-side faults.