The Yokogawa AAM51 operates as a Current/Voltage Output Module designed to deliver 4-20 mA DC signals with software‑defined ranges, insulated outputs, and high‑speed update capability for distributed control systems.
Hardware Specifications
Model: AMM51
Brand: Yokogawa
Origin: Japan
Weight: Not specified
Shipping Weight: 1 Kg
Dimensions: Not specified
Operating Temp: Not specified
Product Type: Current Voltage Output Module
Rated Output Range: 4-20 mA DC
Output Voltage Limit: ≤25.5 V DC
Data Update Period: 2 ms (A2SAM505 alone); step response 22 ms
Current Consumption: ≤38 mA at 24 V DC system supply; ≤10 mA at 5 V DC internal supply
Signal Insulation: Outputs insulated between field and system
Withstanding Voltage: 1500 V AC for 1 min; 42 V DC
Mounting: I/O adaptor nest (A2BA3D)
Output Signal Settings: Configurable via software
4-20 mA HART Loop Protocol
The AAM51 supports 4-20 mA HART loop protocol, enabling deterministic current signal transmission with rapid update periods. Outputs are insulated between field and system, with withstand voltage of 1500 V AC/min. Software configuration allows precise definition of output ranges, ensuring compatibility with distributed control environments.
Frequently Asked Questions (FAQ)
Q: What is the fastest update period supported by the AAM51? A: The module achieves a 2 ms update period when used with A2SAM505, with a step response of 22 ms.
Q: How does the module handle insulation between field and system? A: Outputs are insulated with a withstand voltage of 1500 V AC/min, ensuring isolation integrity.
Q: Can output ranges be customized? A: Yes, output signals and ranges are configured via software.
Field Installation Guidelines
Mount the module securely into the I/O adaptor nest (A2BA3D).
Connect wiring to terminal blocks using M4 screws with proper torque.
Maintain shield grounding at a single point to prevent ground loops.
Separate signal wiring from high‑voltage cabling to minimize interference.
Configure output signal ranges via software before commissioning.
