AMM25T Yokogawa Analog Input Module

Yokogawa AMM25T FIO Series Datasheet & Technical Manual

Yokogawa AMM25T FIO Series Datasheet & Technical Manual

Availability: 10 left in stock

YOKOGAWA AMM25T Analog Input Module The YOKOGAWA AMM25T, also cataloged as the AMM25T Analog Input Module, operates as a dedicated...

SKU: AMM25T

Manufacturer: Yokogawa
Product No.: AMM25T
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

YOKOGAWA AMM25T Analog Input Module

The YOKOGAWA AMM25T, also cataloged as the AMM25T Analog Input Module, operates as a dedicated hardware component for high-density signal acquisition and conversion within CENTUM VP and ProSafe-RS Distributed Control System platforms.

Hardware Specifications

Parameter	Specification
Model	AMM25T
Brand	Yokogawa
Origin	Japan
Weight	0.3 kg
Dimensions	150 mm x 20 mm x 100 mm
Operating Temp	-10 deg C to +55 deg C
Power Consumption	8 W
Number of Channels	32 isolated inputs
Input Signals	4-20 mA DC, 1-5 V DC
Accuracy	+/- 0.1 % of span

Process Control and DCS Instrumentation

The AMM25T facilitates signal acquisition through a high-density architecture supporting 32 independent channels. Each channel provides robust channel-to-channel isolation, preventing electrical noise propagation between field loops and ensuring the integrity of the 4-20 mA HART loop protocol implementation. The module performs high-resolution 16-bit analog-to-digital conversion, mapping field inputs to the control system with a 10 ms per channel conversion time. Built-in diagnostic routines continuously monitor for overcurrent conditions and reverse wiring states, reporting status directly to the controller backplane to maintain the operational state of the I/O subsystem.

Frequently Asked Questions

Q: Does the AMM25T module support hot-swapping during active system operation?

A: Yes, the module supports hot-swapping capability. When replacing a module, ensure the system software has been commanded to ignore input data from the slot to prevent transient diagnostic errors from triggering false alarms in the control logic.

Q: How is the isolation voltage maintained across the module?

A: The module utilizes galvanic isolation to provide a 1500 V AC barrier for 1 minute between channels and between the channel and the system backplane. This prevents ground loops and protects the control bus from high-voltage transients on the field side.

Field Installation Guidelines

Mounting: Insert the module into the designated slot of the FIO baseplate. Ensure the module is pushed firmly until the mechanical locking mechanism engages, confirming a secure electrical connection to the backplane.
Wiring: Terminate field cables using the pressure clamp terminal blocks. Ensure all conductors are stripped to the specified length to prevent exposed wiring while maintaining a secure grip.
Shielding: Terminate cable shields at the cabinet ground bar. Minimize the distance between the shield break-out point and the terminal block to maintain maximum electromagnetic immunity.
Verification: After installation, verify the channel signal values in the DCS engineering station. Check for loop continuity and ensure input impedance (250 Ohm for current loops) matches the transmitter requirements.

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