Description
‑ Power Supply：Power supplied by Harmony rack back‑plane, 5VDC back‑plane logic power supply
‑ Mechanical Structure：Rack plug‑in module for Symphony Harmony rack；overall weight approx 0.36kg
‑ On‑board Resources：INFI‑NET communication controller, back‑plane bus interface circuit, hardware self‑diagnosis circuit, link monitoring circuit.
‑ Communication Interface：INFI‑NET dual‑ring coaxial interface; internal rack back‑plane module bus communicating with local I/O modules in sub‑rack.
‑ Galvanic Isolation：Transformer isolation between INFI‑NET ring network side and sub‑rack back‑plane system side.
‑ Core Function：Sub‑rack INFI‑NET slave network access, data forwarding between sub‑rack local I/O and INFI‑NET ring network, link status monitoring, hardware self‑diagnosis, fault alarm upload to DCS operator station.
‑ Protection：Coaxial port surge and over‑voltage protection.
‑ Status LED Indicators：Ring A communication LED, Ring B communication LED, module run LED, fault LED.
‑ Weight：approx 0.36kg
‑ INNIS21 is dedicated slave network interface for I/O sub‑rack without own station processor. It enables I/O sub‑rack to join INFI‑NET dual redundant ring network, all I/O point data of sub‑rack is transmitted to main control station processor via ring network.
‑ Support Ring A / Ring B dual‑ring redundancy, single ring fault will not affect sub‑rack I/O normal operation. Real‑time monitor ring communication state and sub‑rack back‑plane bus state. When ring break, hardware failure occurs, trigger fault indication and alarm upload.
‑ Installed in I/O sub‑rack slot, communicate with sub‑rack local I/O modules through rack back‑plane bus. Cannot run independently, must work with main station MFP/BRC processor over INFI‑NET ring network.
Difference compared with INIIT13：INIIT13 serves main control station with processor; INNIS21 is for processor‑free pure I/O sub‑rack, realize sub‑rack accessing INFI‑NET ring.
‑ Complete data forwarding between sub‑rack local I/O modules and INFI‑NET ring network.
‑ Monitor dual‑ring network link and sub‑rack back‑plane bus status, fault information upload to DCS system.
‑ No independent control logic, all control algorithm runs on main‑station processor.
‑ Back‑plane：Rack internal back‑plane module bus, connect sub‑rack local I/O modules.
‑ External interfaces：INFI‑NET Ring A and Ring B coaxial ring‑network interfaces.
‑ 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.
- INNIS21 network interface slave module（3BSE008594R1）
Complementary parts: Symphony Harmony I/O sub‑rack, INFI‑NET coaxial communication cable, main station IMMFP03 / BRC processor, INIIT13 termination module, system rack power supply, Harmony series I/O modules.
‑ Insert module into designated network slot of I/O sub‑rack, tighten front‑panel screws to ensure reliable back‑plane connector contact.
‑ Distinguish Ring A and Ring B coaxial interfaces strictly, coaxial connectors must be fastened reliably, avoid poor contact leading to ring‑network abnormal.
‑ Module replacement recommends power‑off operation. After replacement, check dual‑ring LED status, confirm no ring‑break alarm, verify sub‑rack I/O points data upload normally to main control station.
‑ Prevent short‑circuit between coaxial inner conductor and shielding layer to avoid module damage.
Power plant, petrochemical, pulp‑and‑paper industry Symphony INFI90 DCS control cabinets; network access spare‑part for processor‑free pure I/O sub‑rack.
- ABB Symphony Harmony INNIS21 network interface slave module (3BSE008594R1), INFI‑NET ring slave interface for processor‑less I/O sub‑rack.
- Dual‑ring Ring A / Ring B redundant access, transformer isolation, suppress external interference entering sub‑rack back‑plane.
- Real‑time monitor ring link and sub‑rack bus status, fault LED indication and alarm upload function.
- Rack plug‑in structure, cabinet‑internal IP20 application, specially used for pure I/O sub‑rack accessing INFI‑NET ring network.
- Only undertake network data forwarding, no local control logic, rely on main station processor for control calculation.
- Discontinued legacy DCS spare‑part, used for old‑system maintenance and retrofit projects。
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