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METSO A413139
Product Name: Metso A413139 AOH4 (Analog Output High) Module
Product Introduction: The Metso A413139 AOH4 is a high-precision analog output module designed for driving field actuators in process automation systems. It provides isolated current or voltage outputs to control valves, positioners, frequency inverters, and other final control elements within the Valmet DNA I/O family.
Detailed content
Technical Specifications:
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Parameter
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Value
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Brand
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METSO (Valmet Automation)
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Model
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A413139
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Module Designation
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AOH4 (Analog Output High)
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Product Type
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Analog Output Module
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Channels
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4 channels (independent configuration)
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Output Range
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4–20 mA, 0–20 mA, 0–10 V, ±10 V
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Resolution
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16-bit (0.0015% of full scale)
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Accuracy
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±0.05% of reading at 25°C
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Temperature Drift
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<50 ppm/°C
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Isolation
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1500 V DC (channel-to-channel and to system logic)
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Load Capacity
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Up to 750 Ω (current), 2 kΩ (voltage)
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Communication
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High-speed serial backplane (SPI bus), proprietary protocol
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Update Rate
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Up to 1 kHz cyclic updates
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Operating Temperature
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-20°C to +60°C
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Dimensions
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35 × 140 × 120 mm (W × H × D)
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Weight
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0.25 kg
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Compliance
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CE, ISO 9001, RoHS
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Functional Features:
- Each channel independently configurable for current or voltage output
- Built-in ramp function for smooth output transitions
- Watchdog timer forces outputs to predefined safe state on communication loss
- Short-circuit and overvoltage protection on output terminals
- On-board DC-DC converter for isolated output power
- Real-time status registers for channel health monitoring
Material Composition:
- Multi-layer FR-4 PCB
- Surface-mount components for reduced crosstalk
- Galvanic isolation barriers between channels
- Industrial-grade DAC and operational amplifiers
Structural Characteristics:
- Single-height Eurocard form factor
- 64-pin connector for backplane access
- 20-pin front connector for field wiring
- Individual LED indicators per channel
Working Principle:
The module receives digital output commands from the host controller via the high-speed serial backplane. The 16-bit DAC converts digital values to precise analog voltages/currents. Galvanic isolation barriers ensure ground loop immunity. Outputs are monitored by diagnostic circuits that detect open-circuit, overload, and under-range conditions.
Installation Requirements:
- Insert into compatible Valmet I/O rack
- Secure with locking screws
- Use twisted-pair shielded cables for current loops
- Terminate on removable screw terminal block
Usage Notes:
- Configure channel parameters via engineering software
- Perform loop test with precision resistor or multimeter after commissioning
- In-situ calibration available via software-triggered routines
- Store output range, ramp time, and fault values in non-volatile memory
