ABB SPBRC410 Bridge Controller with Modbus‑TCP Interface

‑ Power Supply：Power supplied by rack back‑plane 5VDC logic power supply

‑ Mechanical Structure：Rack plug‑in single‑width module for Symphony Plus HR rack；overall weight approx 0.50kg

‑ On‑board Resources：High‑performance ColdFire processor, expanded RAM & flash memory, lithium backup battery, INFI‑NET ring circuit, Harmony Expander bus controller, 10/100Mbps Modbus‑TCP Ethernet interface, comprehensive hardware self‑diagnosis circuit

‑ Communication Interface：INFI‑NET dual‑ring coaxial interface; Harmony Expander back‑plane bus; independent RJ45 Ethernet port for Modbus‑TCP communication

‑ Galvanic Isolation：Transformer isolation between INFI‑NET ring‑network side and rack internal bus side; Ethernet port isolation, restrain external industrial interference entering control rack.

‑ Core Function：Execute DCS function‑block algorithm, PID closed‑loop control, sequence & interlock logic; manage local Harmony I/O, remote I/O and S800 I/O; INFI‑NET ring data interaction; Modbus‑TCP third‑party device communication; hardware self‑diagnosis, fault alarm upload; lithium battery backup for configuration and RTC clock.

‑ Protection：Module internal over‑temperature, over‑current monitoring protection.

‑ Status LED Indicators：Run LED, fault LED, INFI‑NET Ring A / Ring B communication LED, battery low‑voltage alarm LED, Ethernet link/activity LED.

‑ Weight：approx 0.50kg

‑ SPBRC410 is upgraded bridge controller of Symphony Plus HR series, compared with SPBRC400, adds native Modbus‑TCP Ethernet interface, simplifies access for third‑party intelligent equipment, compatible with INFI90 / Harmony legacy hardware for system renovation upgradeABB Group. Two SPBRC410 modules support 1:1 hot‑standby redundancy, master‑standby bumpless switchover upon main controller failure, no disturbance to field control output.

‑ Real‑time run PID, logic interlock, calculation, batch sequence control function blocks. Collect data from local rack, remote I/O sub‑rack and S800 I/O; send control command to I/O modules. Realize bidirectional data exchange with whole‑plant DCS through INFI‑NET dual‑ring; meanwhile via Modbus‑TCP port communicate with outside PLC, protection IED and 800xA system. Upload process value, alarm and event messages, receive configuration download from engineering workstation.

‑ On‑board lithium battery backs up user configuration and real‑time clock under power‑off condition; low‑battery alarm reminds periodic battery replacement. Comprehensive self‑diagnosis covers processor, memory, INFI‑NET ring link, Ethernet communication, battery health; fault status upload to DCS operator station.

‑ Installed on Symphony Plus HR standard control rack, cannot run independently, must match INIIT series network termination module, various I/O modules and terminal units.

‑ Execute full set of process control algorithm including PID, logic interlock, sequence and batch control for control station.

‑ Manage Harmony local / remote I/O and S800 I/O data; complete bidirectional data interaction over INFI‑NET ring and Modbus‑TCP Ethernet.

‑ Monitor module hardware, dual‑ring network, Ethernet link and backup battery status, upload fault alarm information to DCS system.

‑ Back‑plane：Rack internal Harmony Expander back‑plane bus for I/O data exchange and module power supply.

‑ External interfaces：INFI‑NET Ring A / Ring B coaxial ring‑network interfaces; RJ45 Ethernet port for Modbus‑TCP communication.

‑ 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.

‑ Insert module into controller dedicated slot of HR rack, tighten front‑panel locking knob to guarantee reliable back‑plane contact.

‑ For redundant configuration, two SPBRC410 need correct master‑standby setting; lithium battery will age, replace battery periodically to avoid configuration loss after power‑off.

‑ Module replacement recommends power‑off operation. After replacement, download full station configuration, verify controller running status, INFI‑NET dual‑ring communication, Modbus‑TCP communication, I/O acquisition and control output normal.

‑ Strictly distinguish Ring A and Ring B coaxial wiring; Ethernet wiring adopt shielded cable, separate from high‑voltage power cable to reduce interference.

Power plant, petrochemical, pulp‑and‑paper industry Symphony Plus DCS control cabinets; high‑performance main‑station bridge controller spare‑part, applicable for scenarios needing access third‑party Modbus‑TCP equipment and S800 I/O subsystem.