Description

Yokogawa AAM10 Current/Voltage Input Module

Configured for acquisition of 4-20 mA DC and 1-5 V DC process signals in Yokogawa CENTUM CS/VP I/O architectures, the Yokogawa AAM10 (AAM10 Current/Voltage Input Module) provides direct physical and electrical signal conversion into DCS digital input data streams.

Suffix Breakdown & Model Matrix

The AAM10 is defined as a single fixed hardware model. No factory-published suffix segmentation or option code matrix is specified in the provided documentation.

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa AAM10
PowerConsumption	250 mA or less at 5.0 VDC
Input Signal	4-20 mA DC, 1-5 V DC
Input Resistance (Voltage)	1 MOhm (100 kOhm at power-down)
Input Resistance (Current)	250 Ohm
Allowable Input Range	-10 VDC to 30 VDC, 40 mA DC max
Transmitter Power Supply	25.0 to 25.5 VDC, 60 mA current limit
Data Update Period	50 ms
Isolation	Input-to-system galvanic isolation
Withstanding Voltage	1500 VAC for 1 minute

Yokogawa DCS Channel-to-Channel Signal Conditioning Behavior

The Yokogawa AAM10 implements DCS-grade analog front-end conditioning with software-selectable voltage/current acquisition paths. In current loop mode, the 250 Ohm shunt conversion path enables direct 4-20 mA DC signal translation into measurable voltage levels for A/D conversion. The integrated transmitter power supply (25.0 to 25.5 VDC) supports 2-wire loop-powered devices without external excitation hardware.

Channel isolation design separates field input circuitry from internal CENTUM backplane logic, reducing ground loop propagation through the I/O nest structure. The module maintains stable measurement behavior under ambient temperature variation, with defined drift limits in both voltage and current acquisition channels.

Frequently Asked Questions

Q: Can the AAM10 module directly power 2-wire transmitters?
A: Yes. It provides an integrated 25.0 to 25.5 VDC loop supply with 60 mA current limitation for 2-wire field instruments.

Q: What is the analog conversion cycle of the module?
A: The data update period is fixed at 50 ms, representing the module-level sampling refresh interval.

Q: Is input isolation implemented per channel or per module?
A: Isolation is implemented between field inputs and the internal DCS system domain at module level.

Field Installation Guidelines

• Install the module into the designated I/O Module Nest or Node Interface Unit only.
• Use M4 screw terminals for field wiring termination with controlled torque per site standard practice.
• Maintain shield continuity and terminate cable shields at a single ground point to reduce loop-induced noise.
• Verify correct configuration of voltage vs current input mode before energizing field loops.
• Ensure loop-powered transmitters do not exceed the 60 mA supply limit per channel group.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems