Description

The IMASO11 is a high-density analog output slave card for ABB Bailey INFI 90 and Harmony Symphony DCS. It delivers 14 independent analog outputs to valve positioners, actuators and other final control elements. Each channel is jumper-selectable for 4–20 mA current or 1–5 VDC voltage, with built-in signal readback for diagnostic verification. It communicates with multifunction controllers (IMMFP12) over the slave I/O bus. Its Symphony Plus replacement is SPASO11. It is widely stocked for power, chemical, pulp & paper and refinery closed-loop regulation loops.

Technical Specifications

• Brand: ABB Bailey
• Model: IMASO11
• Warranty: One Year
• Condition: 100% New & Original
• Channels: 14 independent analog output channels
• Output Types: 4–20 mA / 1–5 VDC, per-channel jumper configuration
• D/A Resolution: 10‑bit
• Accuracy: ±0.25% FS (4–20 mA); ±0.15% FS (1–5 VDC)
• Load Limits: Max 750 Ω for current output; min 22 kΩ for voltage output
• Protection: Per-channel 50 mA current limiting / short-circuit protection
• Backplane Supply: +5 V, ±15 VDC from IEMMU rack; +24 VDC supplied by termination unit
• Operating Temp: 0°C to +60°C
• Communication: INFI 90 slave bus to MFP / MFC controllers
• Matching Termination: NTDI01
• Mounting: Standard Harmony single rack slot
• Hot Swap: Supported
• Diagnostics: Front status LEDs; channel-level output readback fault checking
• Differentiation: IMASO01 = older low-density analog output variant; SPASO11 = Symphony Plus successor
• Weight: Approx. 0.61 kg
• Origin: Sweden
• Certifications: CE, UL
• Lifecycle: Obsolete legacy spare