Description
Schneider SXW-DO-FA-12-h 12-channel Type A Contact Digital Output Module
The Schneider Electric SXW-DO-FA-12-H is a high-density digital output module part of the SpaceLogic (formerly SmartX) AS-P and AS-B Automation Server ecosystem. It is designed for precise control in Building Management Systems (BMS).
Product Overview
The SXW-DO-FA-12-H is a 12-channel digital output module featuring Form A (Normally Open) relay contacts. The “-H” designation signifies that it includes Hand-Off-Auto (HOA) overrides, allowing for manual intervention and local control directly from the hardware.
Technical Specifications
Below are the core technical parameters for the module:
| Parameter | Specification |
| Channels | 12 Digital Outputs |
| Output Type | Relay, Form A (Normally Open) |
| Override Switches | Yes (Hand-Off-Auto switches for each channel) |
| Contact Rating | 2.0 A per output (max) |
| Voltage Range | Up to 30 VDC or 250 VAC |
| Status Indicators | LED indicators for each output status |
| Mounting | DIN Rail |
| Communication | Proprietary bus (via Terminal Base) |
Key Product Advantages
-
Manual Overrides (HOA): The front-panel switches allow technicians to manually force an output “On” or “Off” for testing and maintenance, bypassing the software logic.
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High Density: Provides 12 channels in a compact footprint, saving valuable space in control panels.
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Seamless Integration: Fully compatible with EcoStruxure Building Operation (EBO) software for easy configuration and monitoring.
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Hot-Swappable: Designed to be replaced without powering down the entire system (when used with the correct terminal base), reducing downtime.
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Reliability: Robust relay design ensures long-term switching performance for heavy-duty HVAC components.
Important Considerations & Precautions
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Current Limits: Ensure the total load across all channels does not exceed the module’s power dissipation limits.
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Inductive Loads: When switching inductive loads (like motor starters or large solenoids), use external suppression (snubbers or varistors) to protect the relay contacts from arcing.
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Safety Interlocks: Do not rely solely on the software or HOA switches for safety-critical emergency stops; hardware hard-wiring is required for life-safety circuits.
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Terminal Base: This module requires a specific SXW-TB-SBO-1 (or equivalent) terminal base for wiring and mounting.
Product Applications
The SXW-DO-FA-12-H is typically used to control:
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HVAC Equipment: Lighting circuits, small fans, and pumps.
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Staging: Controlling multiple stages of electric heaters or chillers.
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Alarms: Triggering external audible or visual alarm signals.
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Interlocking: Providing dry-contact signals to third-party equipment like Fire Alarm Control Panels or VFD start/stop inputs.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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