Description

ABB PU410K01 3BSE051826R1

I. Basic Information

Model: PU410K01 | Part Code: 3BSE051826R1

Product Overview: This is an RTA redundant MB300 token bus communication kit for ABB 800xA/AC800M DCS systems. It enables cross-generation protocol communication and dual-channel redundant fiber-optic links between AC800M master controllers and legacy Advant MB300 fieldbus devices, supporting round-the-clock redundant networking for critical facilities in thermal power, petrochemical and metallurgical industries. It serves as a direct drop-in upgrade replacement for legacy PU515A/PU516 communication modules on original standard racks.

Brand: ABB DCS | Origin: Sweden
Product Type: RTA Redundant Bus Protocol Conversion Communication Gateway (Complete kit with external communication unit)
Compatibility: AC800M (PM866/PM867) controllers, legacy MB300 token-bus I/O stations, in-service Advant OCS retrofit projects and 800xA V5.0/V5.1 platforms
Installation: Snap-on mounting onto standard 35mm DIN rails inside control cabinets; Overall dimensions: 235×128×52mm; Net weight: approx. 0.8kg; Aluminum alloy housing for thermal dissipation, PCB coated with three-proof protective paint; IP30 protection rating for installation within sealed control cabinets.
Standard Kit Contents: External RTA main communication unit, 24VDC power cable, dual fiber ports, RJ45 Ethernet ports, status indicator LEDs and OEM installation manual.

II. Technical Specifications

(1) Electrical & Communication Parameters

Power Supply: 24VDC±10% cabinet DC power; total power consumption ≤12W; built-in hardware protection against reverse polarity, surge voltage and port overvoltage.
Bus Configuration: Dual redundant MB300 token bus plus dual fiber-optic channels; fiber communication rate: 10Mbps, bus cycle synchronization＜1ms; supports HSR/PRP fault-tolerant redundancy protocols with lossless automatic switchover upon link faults.
Interface Layout: 2×ST multi-mode fiber ports (820nm wavelength), 2×Gigabit RJ45 Ethernet ports, RS232 debugging serial port; single-channel isolation withstand voltage ≥2500VAC; galvanic isolation between high-power and low-voltage circuits to eliminate ground loop interference.
Supported Protocols: Native MB300 token bus protocol with AF100/Profibus-DP compatibility to realize bidirectional protocol conversion between new and legacy DCS systems.

(2) Environmental Parameters

Operating Temperature: -25℃～+60℃ for continuous long-term operation; Storage Temperature: -40℃～+85℃
Humidity: 5%~95% RH non-condensing; Compliant with IEC61000 industrial EMC standards to withstand VFD harmonic interference, dust and high-temperature conditions; CE industrial safety certification approved.

III. Key Features

Cross-platform protocol interconnection between new and legacy DCS
Seamlessly connects modern 800xA & AC800M systems to legacy on-site I/O modules of early Advant MB300 systems. Existing production units avoid full replacement of old I/O hardware to significantly cut renovation costs.
Full-redundant dual-channel link architecture
Adopts dual-fiber plus dual-bus redundant design. Automatic seamless switchover to standby links occurs if a fiber is broken or bus is short-circuited, without interrupting DCS data acquisition and interlock control, satisfying SIL safety requirements for power plant applications.
Hardware-level link self-diagnosis
Four indicator LEDs (RUN/ERR/CH1/CH2) provide local alarm for abnormal links; fault codes are transmitted to the 800xA upper HMI via Ethernet for quick troubleshooting of faulty fiber or bus segments.
Modular replacement without extra configuration
Backward compatible with legacy PU515A/PU516 communication modules. No changes to rack layout or field bus wiring are needed during retrofit; direct DIN rail mounting without modifying underlying controller configuration.
Remote online firmware upgrade
Firmware can be remotely downloaded from an 800xA engineering workstation via RJ45 Ethernet port; no unit disassembly or on-site programming required, facilitating later system version optimization.

IV. Working Principle

After 24VDC power-up: The unit runs self-check on internal power circuit, fiber transceivers and bus chips, then completes Ethernet handshake communication with AC800M master controller.

Downlink path: Control commands issued by AC800M → PU410K01 converts commands into MB300 token bus frames → Data transmitted via fiber/bus to field MB300 I/O modules.

Uplink path: Field measurement data collected by MB300 I/O → Data encapsulated by gateway into Ethernet packets → Packets uploaded to AC800M master controller.

Fault handling: A faulty single channel automatically switches to redundant backup channel; fault information is latched and uploaded to the DCS monitoring system.

V. Application Scenarios

Upgrade projects from legacy Advant DCS to 800xA for 300MW~1000MW thermal power generating units;
Retrofit spare parts for domestic replacement or system upgrade of MB300-bus DCS devices in petrochemical and coal chemical plants;
Capacity expansion and renovation of outdated ABB Advant OCS systems for blast furnaces and sinter furnaces in metallurgical industry;
Compatibility transformation between new and legacy DCS for large-scale papermaking and cement production lines.

Version Classification

PU410K01 (Current Version, PN:3BSE051826R1): Dual-fiber redundant design with enhanced EMC performance; mainstream model for new 800xA projects and existing system retrofits.
Legacy PU515A/PU516: Single-channel bus without fiber redundancy; original equipment for early Advant systems and gradually phased out for replacement.