ABB IMDSO14
ABB IMDSO14 - Image 2

ABB IMDSO14

Product Brief:​ The IMDSO14 is a 16-channel digital output module for the INFI 90 / Harmony DCS. Each channel is a high-side MOSFET sourcing 24 V DC to the field load (solenoid valve, indicator lamp, contactor coil, interposing relay). Outputs are grouped in two groups of 8 with separate process voltage (UP) sense terminals. The module provides short-circuit protection, open-load detection (on some FW revs), and configurable safe-state on C.W. communication loss or module fault (Off / Last State / On). It mounts in IEMMU21 rack.

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Category: SKU: ABB IMDSO14

Description

ABB IMDSO14

  • Technical Specifications:
    • Output Channels: 16 (2 groups × 8 ch)
    • Output Type: High-side MOSFET, current sourcing (PNP) — supplies +24 V DC to load
    • Rated Output Current: 0.5 A per channel continuous; total per group ≤4 A (thermal limit)
    • Output Voltage Range: 12–32 V DC (nominal 24 V DC process supply UP)
    • On-State Voltage Drop: <0.5 V @ 0.5 A
    • Short-Circuit Protection: Current-limited; auto-recovery when fault removed
    • Open-Load Detection: Available on later firmware — flags when load current < threshold with output ON
    • Process Voltage Supervision: One sense input per group; module warning if UP absent
    • Safe-State (OSP): Configurable per channel — Off / Last / On upon C.W. loss or module fault
    • Isolation: Group-to-backplane 500 V DC; channel-to-channel within group common
    • Module Power: 5 V DC from backplane (typ. 200 mA)
    • Indicators: Module Ready (green), Fault (red), C.W. Active (green), per-group Output Active LED
    • Operating Temp.: 0 °C to +60 °C
    • Dimensions: Single-slot INFI 90 module
  • Functional Features:
    • Individual channel status readable by controller (feedback of actual output state)
    • Diagnostics: short-circuit, open-load, process voltage loss reported as module alarms
    • Supports forced output (from operator console) for commissioning/test
    • Compatible with redundant C.W. and hot-swap
  • Application Scenarios:
    • 24 V DC solenoid valve control (pneumatic / hydraulic actuators)
    • Stack light / beacon / annunciator lamp drive
    • Interposing relay coil for starting motor contactors or larger AC loads
    • Packaging / converting line actuator control via remote I/O rack
  • Material & Structure / Working Principle / Installation / Precautions:​ Same INFI 90 module form factor — plugs into IEMMU21; wire load between output terminal (O0…O15) and 0 V return; connect UP (+24 V) and ZP (0 V) to termination assembly (TA568 or equivalent).
    • Precautions:
      • Do NOT exceed 0.5 A/channel or group thermal limit — use DO815 (2 A/ch) equivalent or interposing relay for larger 24 V DC loads
      • For inductive AC loads (contact coil via interposing relay) fit flyback diode across DC coil or RC snubber across AC contacts
      • Verify sourcing (PNP) wiring — load completes circuit to 0 V; NPN sensors are not directly compatible
      • Set OSP per process safety requirement — typically “Off on error” for ESD-related outputs

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