ABB DSTXW110
ABB DSTXW110 - Image 2

ABB DSTXW110

Product Brief:​ The DSTXW110 is a digital output module in the ABB S100 / MasterPiece 200 I/O family, typically providing 8 or 16 independently isolated electromechanical relay contacts (SPST-NO / SPDT depending on version) for switching AC or DC loads. It is used when the load voltage/current exceeds solid-state capability or when isolation between outputs is required. Some versions are transistor (24 V DC sourcing) — the relay version is most common for DSTXW110 designation.

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Category: SKU: ABB DSTXW110

Description

ABB DSTXW110

  • Technical Specifications (typical relay version — 8 ch SPST-NO):
    • Output Type: Electromechanical relay, SPST-NO (Form A) — some versions SPDT (Form C)
    • Channels: 8 (individually isolated) or 16 (paired groups)
    • Rated Switching Voltage: Max 250 V AC, Max 110 V DC (some versions 125 V DC — check label)
    • Rated Switching Current: 2 A / 5 A resistive @ 250 V AC (verify exact rating on module — common = 2 A or 5 A)
    • Minimum Load: 10 mA / 5 V DC (contact wetting requirement)
    • Contact Material: Silver alloy (AgCdO or AgSnO₂)
    • Operate / Release Time: ≈10 ms / 5 ms
    • Coil Supply: 24 V DC from S100 backplane (internally derived)
    • Isolation: 2000 V AC channel-to-coil and channel-to-channel
    • Power Dissipation: Typ. 2–3 W (all relays energized)
    • Indicators: Per-channel yellow LED (ON = relay energized); module Run / Error LED
    • Operating Temp.: 0 °C to +60 °C
    • Mounting: S100 I/O rack slot
    • Certifications: CE, UL, cUL
  • Functional Features:
    • Fully isolated per channel — mix AC and DC loads safely in same module
    • Relay coil supervision — module warns if 24 V backplane supply lost
    • Suitable for switching motor starter coils, alarm sirens, solenoid valves (AC), indicator beacons
    • Dry-contact closure also usable for signaling to other control systems
  • Application Scenarios:
    • Switching 230 V AC alarm horns / beacons in plant annunciator
    • Controlling 110 V DC / 230 V AC motor starter (contactor) coils
    • Interfacing dry contacts to third-party equipment (e.g., start permit to old relay-based system)
    • Driving AC solenoid valves (irrigation, HVAC dampers)
  • Material & Structure / Working Principle / Installation / Precautions:
    • Same S100 form factor — plug into rack to right of DSTK150
    • Wire load between COM and NO terminal; verify voltage/current rating on nameplate
    • For inductive AC loads (contactor coils) fit external RC snubber across load to extend contact life
    • Electrical life ≈10⁵ ops at rated resistive load — plan replacement in high-cycle applications
    • Do NOT exceed voltage/current rating — contact welding may occur; for >5 A use interposing contactor
    • Minimum load caution — very low current signals (<10 mA) may cause contact oxidation over time (use gold-flashed contacts version for low-level signals)

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