Description
‑ Power Supply：Power supplied by rack back‑plane 5VDC logic power supply
‑ Mechanical Structure：Rack plug‑in module for Symphony Plus HR rack；overall weight approx 0.476kg
‑ On‑board Resources：Multi‑channel signal conditioning circuit,14‑bit A/D converter, channel open‑circuit burnout detection circuit, hardware self‑diagnosis circuit, on‑board calibration storage
‑ Communication Interface：Internal Harmony Expander back‑plane module bus for communicating with station bridge controller
‑ Galvanic Isolation：Group‑to‑system galvanic isolation, suppress ground‑loop interference introduced by field transmitters
‑ Core Function：Field analog signal acquisition, 14‑bit A/D conversion, channel open‑circuit burnout detection, signal scaling processing, upload digital process value to station controller
‑ Protection：Per‑channel input surge and over‑voltage protection
‑ Status LED Indicators：Power OK LED, Fault alarm LED
‑ Weight：approx 0.476kg
‑ SPFEC12 provides total 15 configurable analog input channels, supports 4‑20mA two‑wire transmitter and 1‑5V voltage signal input, each channel can independently configure signal range and filter parametersABB Group. It adopts 14‑bit A/D conversion, collects pressure, flow, liquid‑level transmitter signals on site.
‑ Built‑in channel burnout/open‑circuit detection function, can identify field instrument broken wiring fault. Supports channel signal scaling, converts raw sampling value into engineering unit value, reduces controller computing load.
‑ Comprehensive self‑diagnosis function: detect module hardware failure, channel over‑range, field loop open‑circuit fault; fault alarm information upload to DCS operator station.
‑ Installed on Symphony Plus HR standard rack, cannot work independently, must cooperate with SPBRC400/SPBRC410 bridge controller and matched analog‑input terminal unit.
Difference compared with SPASI23：SPFEC12 is 15‑channel AI module only for 4‑20mA /1‑5V signal; SPASI23 is universal 16‑channel AI module, additionally supports thermocouple, RTD thermal resistance multi‑type temperature signal input.
‑ Complete field analog signal acquisition, conditioning and A‑D conversion, upload engineering‑converted process value to station bridge controller.
‑ Monitor module hardware operating status and each channel signal health status, fault information upload to DCS system.
‑ No independent process control logic function, control algorithm runs on upper‑level SPBRC series bridge controller.
‑ Back‑plane：Rack internal Harmony Expander back‑plane bus for data communication and module power supply.
‑ External interfaces：Connect field transmitters via supporting matched terminal wiring unit.
‑ Mounting：Plug‑in installation on Symphony Plus HR 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.
- SPFEC12 field equipment communication analog input module（SPFEC12）
Complementary parts: Symphony Plus HR control rack, SPBRC400/SPBRC410 bridge controller, matched analog‑input terminal unit, field 4‑20mA /1‑5V transmitters, shielded signal cable, INFI‑NET network, operator & engineering workstation.
‑ Insert module into correct I/O slot of HR rack, tighten front‑panel locking knobs to guarantee reliable back‑plane contact.
‑ Field analog signal wiring adopts shielded cable, separate layout from high‑voltage power cable to reduce electromagnetic interference. Channel configuration must match field transmitter signal type.
‑ Module replacement recommends power‑off operation. After replacement, download corresponding configuration, verify each channel process value consistent with field instrument indication.
‑ Two‑wire transmitter loop power is supplied by matched terminal unit, check loop power supply when open‑circuit burnout alarm occurs.
Power plant, petrochemical, pulp‑and‑paper industry Symphony Plus DCS control cabinets; analog‑signal acquisition spare‑part, collect pressure, flow, liquid‑level standard transmitter signals.
- ABB Symphony Plus SPFEC12 field equipment communication analog input module (SPFEC12),15‑channel AI slave module for Symphony Plus HR‑series DCSABB Group.
- Support 4‑20mA two‑wire transmitter,1‑5V voltage input,14‑bit A‑D conversion, built‑in channel open‑circuit burnout detection, configurable digital filter and signal scaling.
- Group‑channel galvanic isolation, per‑channel surge & over‑voltage protection, hardware and channel fault self‑diagnosis, alarm upload function.
- Rack plug‑in structure, cabinet‑internal IP20 application, cooperate with special terminal unit for field instrument wiring.
- Only undertake analog signal acquisition and A‑D conversion, control logic executed by SPBRC series bridge controller. Distinguished from multi‑signal universal AI module SPASI23.
- Discontinued legacy DCS spare‑part, used for old‑system maintenance and retrofit projects。
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