ABB DSMB-01C Analog Output Module / Control Board
ABB DSMB-01C
Part No.: DSMB-01C
Manufacturer: ABB (Sweden)
Series: Symphony Plus / AC 800PEC DCS
Type: Analog Output Module / Control Board
Application: Power Generation, Industrial Process Control
1. General Description
The DSMB-01C is a high-performance 8-channel analog output (AO) module designed for ABB's Symphony Plus and AC 800PEC distributed control systems (DCS). Primarily used in power generation and heavy industrial processes, it provides precise, isolated analog signals to control valves, actuators, and other field devices. It is a critical component for ensuring stable and accurate regulation of process variables.
Status: Legacy/Discontinued (Commonly sourced as refurbished or new surplus for system maintenance).
Status: Legacy/Discontinued (Commonly sourced as refurbished or new surplus for system maintenance).
2. Core Specifications
• Channels: 8 x Analog Outputs (AO), fully isolated
• Signal Types: 4–20 mA (default) or 0–10 V (configurable per channel)
• Load Drive: 4–20 mA: Max 750 Ω; 0–10 V: Min 2 kΩ
• Accuracy: ±0.1% FSR (Full Scale Range) at 25°C
• Isolation: ≥500 Vrms (Channel-to-Channel & Channel-to-Ground)
• Power: 24 VDC (Backplane Powered)
• Dimensions: 77 mm x 22.5 mm x 114 mm
• Weight: Approx. 0.2 kg
• Operating Temp: -20°C to +70°C
3. Key Features
• Hot-Swappable: Allows replacement under power without system shutdown
• Channel Isolation: Prevents cross-talk and protects system from ground loops
• Built-In Diagnostics: Monitors output status, short-circuit, and over-range conditions
• Potentiometer Adjustment: On-board gain and reset trimmers for fine-tuning control loops
• Certifications: CE, UL, CSA (Industrial Safety Standards)
4. Typical Applications
Primarily deployed in ABB control systems for:
- Gas and Steam Turbine Control
- Generator Governor & Excitation Systems
- Valve Position Control
- Industrial Boiler & Process Regulation
- Retrofitting legacy power plant automation
ABB © DCS Industrial Spare Module