Purchase now: Wago 750-466 Analog Input Module
Purchase now: Atlantech Drives provides you the Wago 750-466, a 2-channel **Analog Input Module** for the Wago I/O System 750. This module is designed to receive standard industrial signals of **4 to 20 mA**. It is classified as **Single-Ended (S.E.)**, which means both channels share a common ground potential (0V). This design allows for a compact 12mm width while monitoring two sensors, making it cost-effective for applications where ground isolation between channels is not critical.
Technical Specifications and Signal Processing
The 750-466 provides a 12-bit resolution, translating the current signal into a digital value for the bus coupler. It is powered directly via the internal system voltage. The module has a low input resistance (< 160 Ohms), minimizing the voltage drop in the loop. It includes a red error LED that indicates wire breakage or out-of-range values, a crucial diagnostic tool for maintenance personnel.
- Part Number: 750-466.
- Channels: 2 Analog Inputs.
- Signal Type: 4…20 mA.
- Connection: Single-Ended (Common Ground).
- Resolution: 12 bits.
- Conversion Time: ~2 ms.
- Input Resistance: < 160 Ω.
- Bit Width: 2 x 16 bits data.
- Wire Connection: CAGE CLAMP®.
Expert Tips: Single-Ended vs Differential
Choosing the right module saves headaches. Expert Tip: Use the 750-466 (Single-Ended) when your sensors share the same 24V supply ground as the Wago rack. If your sensors are far away in the field (over 50m) or powered by different power supplies with different ground potentials, avoid this module. Ground loops will offset your measurement values. In those cases, use a Differential Input module (like 750-455) to isolate the signal.
Frequently Asked Questions (FAQs)
Q: Does it detect a broken wire?
A: Yes, since the range is 4-20mA, any current below roughly 3mA is interpreted as a wire break or sensor fault, triggering a diagnostic bit.
Q: How do I wire a 2-wire sensor?
A: For a 2-wire loop-powered sensor, connect the 24V directly to the sensor + and the sensor return to the input terminal of the 750-466. The common ground (0V) completes the loop internally.
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