Description
‑ Power Supply：Power supplied by Harmony rack back‑plane, 5VDC back‑plane power supply
‑ Mechanical Structure：Rack plug‑in module for Symphony Harmony rack；overall weight approx 0.34kg
‑ On‑board Resources：INFI‑NET signal transformer isolation circuit, ring‑network terminal matching resistance, surge suppression protection circuit, link state detection circuit.
‑ Communication Interface：Two groups of INFI‑NET dual‑ring coaxial external interfaces; internal rack back‑plane bus connects with processor/gateway module.
‑ Galvanic Isolation：Transformer‑type isolation between external coaxial ring‑network side and rack internal system side.
‑ Core Function：INFI‑NET dual‑ring network physical signal termination, coaxial cable impedance matching, signal isolation, surge protection, ring link status detection, complete physical connection between rack internal modules and INFI‑NET ring network.
‑ Protection：Coaxial port surge and over‑voltage protection.
‑ Status LED Indicators：Ring A communication LED, Ring B communication LED, fault status LED.
‑ Weight：approx 0.34kg
‑ INIIT13 is physical interface termination unit of INFI‑NET dual redundant ring network. Each station must be equipped with INIIT13 to access INFI‑NET ring. Two independent ring channels Ring A and Ring B realize dual‑ring redundancy.
‑ Built‑in precise impedance matching circuit for coaxial cable, guarantee signal integrity of INFI‑NET high‑speed ring communication, restrain signal reflection distortion. Transformer isolation isolates external ring‑network interference from rack internal system circuit.
‑ Detect link status of Ring A and Ring B in real‑time. When ring break, cable fault or signal abnormality occurs, LED gives indication and upload fault alarm information to DCS operator station.
‑ Installed on Symphony Harmony standard rack, communicate with station processor or INICT03A gateway module via back‑plane bus, cannot work independently without matching ring‑network coaxial cable.
Difference compared with INIIT02：INIIT13 is upgraded dual‑ring termination module, better anti‑surge performance; INIIT02 is early‑generation INFI‑NET termination unit.
‑ Process physical‑layer signal of INFI‑NET dual‑ring network, provide impedance matching and isolation protection.
‑ Monitor Ring A / Ring B link running status, ring break fault information upload to DCS system.
‑ No data protocol parsing and no process control logic function.
‑ Back‑plane：Rack internal back‑plane bus, interact with station processor or gateway module.
‑ External interfaces：Two groups INFI‑NET coaxial connectors for Ring A and Ring B ring‑network wiring.
‑ Mounting：Plug‑in installation on Symphony Harmony standard rack
‑ Operating Temperature：‑20 ℃ ~ +60 ℃
‑ Storage Temperature：‑40 ℃ ~ +85 ℃
‑ Relative Humidity：5‑95 %RH, non‑condensing
‑ Pollution degree：Degree 2
‑ Protection Class：IP20, cabinet‑internal installation.
- INIIT13 INFI‑NET interface termination module（3BSE008592R1）
Complementary parts: Symphony Harmony rack, INFI‑NET coaxial communication cable, IMMFP03 / BRC series processor, INICT03A gateway module, system rack power supply, operator station.
‑ Insert module into dedicated INFI‑NET slot of Harmony rack, tighten front‑panel screws to ensure reliable back‑plane connector contact.
‑ Strictly distinguish Ring A and Ring B coaxial ports, follow ring‑network wiring sequence; coaxial connectors shall be fastened tightly, loose connectors easily cause ring‑network communication jitter or ring break.
‑ Module replacement recommends power‑off operation. After replacement, check Ring A and Ring B LED status, confirm INFI‑NET dual‑ring network no ring‑break alarm, verify cross‑station data exchange normal.
‑ Do not short‑circuit coaxial core wire and shielding layer, avoid module hardware burnout.
Power plant, petrochemical, pulp‑and‑paper industry Symphony INFI90 DCS control cabinets; physical termination spare‑part for INFI‑NET dual redundant ring network.
- ABB Symphony Harmony INIIT13 INFI‑NET interface termination module (3BSE008592R1), physical‑layer termination unit for INFI‑NET dual‑ring network.
- Dual independent Ring A / Ring B channel, built‑in impedance matching, transformer isolation and surge suppression for coaxial ring‑network signal.
- Real‑time dual‑ring link monitoring, ring‑break fault LED indication and alarm upload function.
- Rack plug‑in structure, cabinet‑internal IP20 application, each INFI90 control station needs to configure this module to access ring network.
- Only physical‑layer signal processing, no protocol parsing and control logic.
- Discontinued legacy DCS spare‑part, used for old‑system maintenance and retrofit projects。
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