Siemens 6ES5464-8MB11 Analog Input | 8 Ch, 12‑bit, 4‑20 mA

This analog input module captures eight channels of industrial process signals. The Siemens 6ES5464-8MB11 belongs to the SIMATIC S5 product family. You can connect thermocouples, transmitters, and sensors directly. Its high-precision design suits temperature monitoring and process control applications.

Physical Dimensions and Hardware Layout

The Siemens 6ES5464-8MB11 measures 25.0 cm in overall width. Its total depth reaches 21.5 cm including the front connector. This analog input module weighs approximately 0.95 kg. A metal housing provides excellent shielding against electrical noise. One green LED indicates backplane power status. Additionally, eight yellow LEDs show each channel’s active conversion state.

Input Specifications and Signal Ranges

Each channel accepts 0 to 10V or ±10V voltage signals. The Siemens 6ES5464-8MB11 also handles 0 to 20 mA and 4 to 20 mA currents. You can configure each channel independently for voltage or current mode. Built‑in 24V DC loop power supports two‑wire transmitters on channels 0 to 3. The module provides cold junction compensation for external thermocouples.

Parameter	Specification
Number of Channels	8
Product Family	SIMATIC S5
Voltage Ranges	0 to 10V, ±10V
Current Ranges	0 to 20 mA, 4 to 20 mA
Resolution	12 bits
Accuracy	±0.2% of full scale
Conversion Time	25 ms per channel
Update Time (all channels)	200 ms
Loop Power Output	24V DC, 25 mA on channels 0‑3
Input Impedance (Voltage)	> 200 kΩ
Input Impedance (Current)	250 Ω
Dimensions (W x H x D)	250 mm x 75 mm x 215 mm
Weight	0.95 kg (2.09 lbs)
Terminal Type	20‑pin front connector (sold separately)
Wire Size	0.5 to 2.5 mm²
Backplane Current Draw	280 mA @ 5V DC
Power Dissipation	1.8 W typical
Internal Energy Storage	150 µF capacitor bank
Isolation Voltage	500 Vrms channel‑to‑backplane
Common Mode Rejection	70 dB at 50/60 Hz
Number of Components	1 main board, 1 resistor network
LED Indicators	1 green (power), 8 yellow (active)
Operating Temperature	0°C to +60°C

Energy Storage and Measurement Stability

Internal capacitors stabilize the analog reference voltage locally. The Siemens 6ES5464-8MB11 maintains reading accuracy during brief power dips. This storage prevents false measurements from supply fluctuations. Consequently, process readings remain reliable in industrial environments.

Configuration and Channel Programming

You configure each channel using jumpers on the module board. The Siemens 6ES5464-8MB11 stores channel settings in hardware. Select voltage or current mode for each channel independently. Enable loop power on channels 0 to 3 via jumper settings. Therefore, mixed signal types can connect to the same module.

Wiring and Installation Guidelines

Use the 20‑pin front connector (6ES5498-1AA61) for field wiring. The Siemens 6ES5464-8MB11 requires shielded twisted‑pair cables for optimal noise rejection. Connect the shield drain wire to the ground terminal only. Proper grounding improves measurement accuracy significantly. Avoid running analog cables parallel to high‑power AC lines.