The Yokogawa AAM50 operates as a Current Output Module designed to deliver 4-20 mA DC signals with software‑defined output ranges, insulated outputs, and system‑level integration for distributed control.
Hardware Specifications
Model: AAM50
Brand: Yokogawa
Origin: Japan
Weight: Not specified
Dimensions: Not specified
Operating Temp: Not specified
Power Consumption: ≤250 mA at 5.0 V DC
Output Signal: 4-20 mA DC
Output Resistance: ≥500 kΩ
Allowable Load Resistance: 0-750 Ω
Output Range: 1.0-21.5 mA DC
Output Voltage Limit: ≤25.5 V DC
Output Open Detection: ≤0.65 mA
Accuracy Rating: ±48 µA
Effect of Ambient Change: 10 deg C → ±32 µA
Effect of Load Resistance Change: 0-75 Ω → ±16 µA
Data Update Period: 20 ms; step response 100 ms
Signal Insulation: Outputs insulated between systems
Withstanding Voltage: 1500 V AC/min
Installation: I/O Module Nest
Wiring: M4 screw terminal connection
Output Signal Settings: Configurable via software
4-20 mA HART Loop Protocol
The AAM50 supports 4-20 mA HART loop protocol, enabling deterministic current signal transmission. Outputs are insulated between systems with 1500 V AC/min withstand voltage. Software configuration allows precise definition of output ranges, while open detection ensures fault identification at ≤0.65 mA.
Frequently Asked Questions (FAQ)
Q: What is the step response time for the AAM50? A: The module specifies a step response of 100 ms, with a data update period of 20 ms.
Q: How does ambient temperature affect output accuracy? A: A 10 deg C change results in ±32 µA drift in current output.
Q: Can output ranges be customized? A: Yes, output signal specifications and ranges are set via software configuration.
Field Installation Guidelines
Install the module securely into the I/O Module Nest.
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.
