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Phone: +86 16626708626Description
3. Key Technical Specifications
- Model: D201190
- Also known as: AO4H (4-Channel HART Output Module)
- Manufacturer: Metso Automation (now Valmet)
- Type: Analog Output Module
- Channels: 4 analog outputs
- Communication: HART protocol support
- System Compatibility: Metso DNA / Valmet Distributed Control System (DCS) and related platforms
- Common Version: Ver. G
- Form Factor: Standard industrial I/O module
- Application: Precision analog output control with HART field device communication
Note: Exact output signal ranges (e.g., 4-20 mA), isolation, and power requirements should be verified against the module label or system documentation.
4. Product Introduction
The Metso / Valmet D201190 is a 4-channel analog output module with HART capability (AO4H). It provides analog control signals to field devices while supporting HART digital communication for device configuration and diagnostics.
These modules are used in Metso and Valmet automation systems where precise analog outputs and smart field device integration are required. Maintenance teams replace the D201190 when an output card fails or when expanding analog output capacity. Available units are typically New Surplus or residual stock.
D201190
D201190
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Outputs not responding | Power, configuration, or module fault | ✅ High | Check supply voltage and output status | Verify power and channel configuration |
| HART communication failure | Wiring, grounding, or module issue | ✅ High | Check HART loop integrity and device status | Verify cabling and termination |
| Incorrect output value | Calibration or signal scaling issue | ✅ High | Compare commanded vs. measured output | Recalibrate or check scaling parameters |
| System does not recognize module | Seating or addressing problem | ✅ High | Reseat module and check configuration | Confirm slot and system setup |
| Channel stuck or erratic | Field device or output circuit fault | ✅ Medium | Test with known load | Isolate field device vs. module failure |
If the issue persists, record the exact version (e.g., Ver. G), any diagnostic codes, and the system configuration before contacting support.
6. Frequently Asked Questions (FAQ)
Q: What does AO4H mean on the D201190?
A: AO4H indicates a 4-channel Analog Output module with HART communication support.
Q: What systems is the D201190 compatible with?
A: It is designed for Metso Automation and Valmet control systems (legacy DNA / DCS platforms and related I/O architectures).
Q: Is the D201190 still in production?
A: It is a legacy module. Current availability is primarily through New Surplus or residual stock channels.
Q: Can I substitute a different analog output module?
A: Only if the replacement is confirmed form-fit-function compatible (including HART support if required). Incorrect substitution can cause control or communication issues.
Q: Why is pricing lower than a current Valmet I/O module?
A: This is a discontinued or low-volume legacy module sold as New Surplus stock. Pricing reflects remaining inventory rather than current production cost. All units are functionally verified before shipment. Standard warranty is typically 12 months or as stated by the seller.
Q: What should I check before ordering a replacement?
A: Confirm the complete part number and version on the existing module, note whether HART functionality is required, and verify the system it is installed in.
