Overview
Key Features
- 8 analog input channels for field signal collection.
- Supports current and millivolt voltage signals.
- Provides channel-to-bus electrical isolation.
- Connects field instruments and sensors to the control system.
- Uses an I/O baseplate for installation and power supply.
- Compact plug-in design for cabinet-mounted systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AMM25T |
| Brand | Yokogawa |
| Product Type | Analog Input Multiplexer Module |
| Number of Channels | 8 |
| Signal Types | Current and millivolt voltage |
| Input Range | 0-20 mA, 0-50 mV (reported typical values) |
| Accuracy | +/-0.1% FS (reported typical value) |
| Electrical Isolation | Channel-to-bus isolation |
| System Compatibility | CENTUM VP, CENTUM CS/CS 3000 |
| Power Supply | Via I/O baseplate |
| Mounting | I/O baseplate slot |
| Dimensions (W x H x D) | 45 x 97 x 103 mm |
| Weight | Approx. 0.3 kg |
Signal Acquisition and Isolation
The AMM25T collects analog signals from field instruments and passes the acquired signals to the control system. Its multiplexer function supports the handling of multiple input channels through a shared signal acquisition arrangement.
Channel-to-bus electrical isolation separates the input channels from the internal bus. This isolation helps limit the transfer of electrical disturbances between the field signal circuits and the system bus.
Installation and Power Supply
The module installs in an I/O baseplate slot, which provides its mounting interface and power supply connection. The baseplate also serves as the connection point between the installed module and the control system architecture.
Before installation, verify the baseplate configuration and signal input requirements against the actual system hardware documentation.
Frequently Asked Questions
Q: How many analog input channels does the AMM25T support?
A: The AMM25T supports 8 analog input channels for collecting field signals.
Q: What input signals does the AMM25T handle?
A: The listed signal types include current and millivolt voltage signals. The reported typical input ranges are 0-20 mA and 0-50 mV. Confirm the applicable ranges before connecting field instruments.
Q: How is the AMM25T installed and powered?
A: The module installs in an I/O baseplate slot and receives power through the baseplate. Confirm the required baseplate configuration before replacement or installation.
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