Description
‑ Power Supply：Input 24VDC，operating range 19.2‑30VDC
‑ Mechanical Structure：Plug‑in module for IEMMU rack；overall weight approx 0.32kg
‑ On‑board Resources：DC‑DC conversion circuit, over‑current, over‑voltage protection circuit; no processor, no storage chip.
‑ Communication Interface：No external communication port, power supplied to internal ModuleBus backplane bus.
‑ Galvanic Isolation：Internal power domain isolation between input side and station backplane side.
‑ Core Function：Power conversion, provide stable working power for S800 I/O station back‑plane bus and I/O modules, over‑current and over‑voltage fault protection.
‑ Protection：Over‑voltage protection, over‑current protection, short‑circuit protection.
‑ Status LED Indicators：Power OK indicator LED.
‑ Weight：approx 0.32kg
‑ IEPAS01 inserts into dedicated slot of IEMMU11 / IEMMU21 mounting unit, converts external 24VDC input and distributes power to rack back‑plane ModuleBus, supplies power for all I/O modules on the station.
‑ Real‑time monitor internal power operating status, trigger protection when short‑circuit, over‑current or over‑voltage occurs, avoid damage to back‑plane and I/O modules.
‑ When IEPAS01 fails, the whole S800 I/O station loses power, all I/O modules stop working, communication with controller breaks off.
‑ Must be used matched with IEMMU series mounting unit, cannot work independently.
Difference compared with IEPAS02：IEPAS01 is standard power module for S800 station, IEPAS02 is enhanced power version for more I/O modules load.
‑ Module own power status displayed by front‑panel LED.
‑ Power fault diagnostic information can be uploaded to AC800M controller through ModuleBus bus, realized by upper system diagnosis.
‑ Without local logic processing function.
‑ Back‑plane：Contact with rack back‑plane for power output.
‑ External interfaces：24VDC power input terminal.
‑ Mounting：Plug‑in on IEMMU mounting unit
‑ Operating Temperature：0 ℃ ~ +55 ℃
‑ Storage Temperature：‑40 ℃ ~ +70 ℃
‑ Relative Humidity：5‑95 %RH, non‑condensing
‑ Pollution degree：Degree 2
‑ Protection Class：IP20, cabinet‑internal installation.
- IEPAS01 power supply unit（3BSE008554R1）
Complementary parts: 24VDC power source, IEMMU11 / IEMMU21 mounting unit, S800 series I/O modules, CI series communication interface module, ModuleBus cable, System 800xA controller.
‑ Insert module into dedicated power slot of IEMMU rack, ensure good contact with back‑plane connector.
‑ Input 24VDC wiring should follow cabinet power distribution specification, match correct polarity.
‑ When replacing module, cut off station power supply first. After replacement, check power indicator light, confirm whole station I/O can communicate normally.
‑ Do not exceed maximum load quantity of I/O modules supported by IEPAS01.
Power plant, petrochemical, paper‑making industry 800xA DCS control cabinets; S800 remote I/O station power supply module; industrial spare‑part for ABB S800 I/O system.
- ABB S800 I/O IEPAS01 station power supply unit (3BSE008554R1), plug‑in power module for IEMMU mounting rack.
- Complete DC‑DC power conversion, provide power for station back‑plane bus and each I/O module.
- Built‑in multiple fault protection: over‑voltage, over‑current, short‑circuit protection.
- Simple plug‑in installation, status LED indication, IP20 for cabinet inside application.
- No independent control function, must cooperate with IEMMU mounting unit and S800 I/O modules.
- Mature discontinued DCS spare‑part, used for old‑system maintenance and retrofit projects。
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