Description
Core Product Summary
The Metso D201129 (also designated as the DO8P module) is an 8-channel digital output unit designed for integration within Metso and Valmet DNA distributed control system (DCS) architectures. It bridges internal controller logic signals and field-level actuators, providing dependable switching control for industrial devices such as solenoid valves, indicator lights, contactors, and auxiliary relays.
Featuring channel-specific current-limited voltage supply characteristics and mechanical/solid-state switching versatility, the module is engineered to support high-availability process control environments like power generation plants, pulp and paper processing facilities, and heavy industrial automation networks. It mounts cleanly onto standard rack mounting bases (such as MB2 or MB8 series) within I/O cabinets.
Key Technical Specifications
| Parameter | Specification Details |
| Manufacturer | Metso / Valmet |
| Model / Part Number | D201129 (DO8P) |
| Product Type | 8-Channel Digital Output Module |
| System Compatibility | Valmet DNA DCS / ACN I/O Series |
| Number of Channels | 8 digital output channels |
| Output Voltage Range | 17 to 30 V DC (nominal 24 V DC) |
| Output Current Limits | < 200 mA per channel (short-circuit current < 300 mA) |
| Load Types | Supports DC loads, signal lights, and solenoid valves (via relay or PNP switching) |
| Diagnostic Features | Channel status LED indicators (Channels 0–7) |
| Enclosure Dimensions (H × W × D) | 95 mm × 24 mm × 95 mm (3.74 in × 0.94 in × 3.74 in) |
| Weight | Approximately 90 g |
Detailed Product Overview
The Metso D201129 digital output module serves as an executive link in automated loop controls, translating internal automation commands from ACN controllers into actionable physical signals on the plant floor. Each of its eight channels operates independently, allowing discrete control over localized automation equipment.
The unit integrates physical status LED indicators on the front panel (marked 0 through 7) that illuminate when a respective output channel switches to active state (‘1’), offering engineers instant visual feedback during commissioning and active loop troubleshooting. Designed for seamless insertion into standard Valmet DNA mounting bases, the module supports robust backplane communication while keeping cabinet footprint requirements minimal due to its compact 24 mm width profile.
D201129
D201129
Dimensions, Mounting & Connection Notes
- Physical Dimensions: Compact housing measures 95 mm in height, 24 mm in width, and 95 mm in depth.
- Mounting Configuration: Modular rack-based installation layout intended for standard industrial I/O chassis backplanes.
- Wiring Interface: Utilizes multi-pin backplane connections combined with flat cable headers to route signals safely to cabinet terminal blocks.
- Handling Guidelines: Standard electrostatic discharge (ESD) precautions should be observed when inserting or replacing the module in a live or powered-down rack environment.
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
| Control Architecture | Valmet DNA DCS / ACN I/O rack platform | Designed specifically for native slot installation in ACN I/O node layouts. |
| Mounting Base | MB2 or MB8 series mounting bases | Connects via integrated backplane connectors and flat cable interfaces. |
| Power Distribution | Field power supply (17 to 30 V DC) | External or backplane-routed loop power must match operational voltage limits. |
| Field Cabling | System cross-connection boards (CXS, CXW, CXR) | Interface cables link cabinet terminal blocks directly to field actuators. |
FAQ
What is the primary function of the Metso D201129?
The D201129 is an 8-channel digital output module (commonly referenced as DO8P) used to send control commands from a Valmet DNA DCS to external field actuators like solenoid valves, indicators, and relays.
Which control systems support the D201129 module?
It is engineered natively for Valmet DNA distributed control systems utilizing the ACN I/O hardware series.
How can I visually check channel status on the module?
The unit features eight yellow status LEDs on the front panel corresponding to channels 0 through 7, which light up whenever a specific output channel is driven active.
What are the power supply and load boundaries for the outputs?
The outputs operate on a 17 to 30 V DC range, with individual channel currents restricted to under 200 mA and built-in short-circuit current protection below 300 mA.
Start Chat
