ABB Bailey IEPRD02 Communications System

This communications system provides network interface capability for ABB Bailey INFI 90 automation systems. It manages data exchange between the control network and plant-wide information systems. Therefore, it enables integration of turbine controls with higher-level SCADA and DCS platforms.

Physical and Network Specifications

The ABB Bailey IEPRD02 measures 25.0 cm in length and 18.0 cm in width. Moreover, its system weight equals approximately 0.95 kg for rack mounting. A single 48-pin male connector links this system to the INFI 90 backplane. Additionally, the unit includes two independent communication interfaces for network redundancy.

Parameter	Specification
Brand	ABB Bailey
Full Model	IEPRD02
Category	Communications System
Dimensions (L x W x H)	25.0 cm x 18.0 cm x 5.5 cm (9.84″ x 7.09″ x 2.17″)
System Weight	0.95 kg (2.09 lbs)
Backplane Interface	1 x 48-pin Male Connector (INFI 90 Rack)
Power Supply Input	5 VDC from Backplane (1.3 A Typical)
Power Consumption	6.5 W (Typical)
Processor Type	32-bit RISC (50 MHz)
Program Memory	512 kB ROM (Firmware)
Data Memory	256 kB RAM (Battery Backed)
Backup Battery	Internal Lithium (3V, 5 Year Life)
Network Interface 1	1 x 9-pin D-Sub Female (RS-232/RS-422)
Network Interface 2	1 x 10Base-T Ethernet (RJ45)
Protocols Supported (INFI Side)	Bailey PC90 + Multibus Loop
Protocols Supported (Plant Side)	Modbus RTU + Modbus TCP + DNP3 + IEC 60870-5
Ethernet Baud Rate	10 Mbps
Serial Baud Rate Range	1200 to 115200 baud
Maximum Connections	32 Serial Devices + 8 Ethernet Clients
Data Mapping Capacity	4096 Registers (Input + Output + Status)
Redundancy Mode	Hot Standby (Dual Systems)
Configuration Method	Web Interface + Software Tool
On-Board Components	1 CPU IC + 6 Memory Chips + 2 UARTs + 1 Ethernet Controller + 2 Isolated Transceivers + 4 Optocouplers + 2 Isolation Transformers + 8 Protection Diodes + 1 Voltage Regulator + 1 Real-Time Clock + 1 Watchdog Timer IC + 1 Web Server IC
Energy Storage	4 x 220 µF Electrolytic Capacitors (35V) + 3 x 10 µF Tantalum (25V) + 1 x CR2032 Backup Battery
Battery Backup Time	5 Years (Typical for RAM and RTC Retention)
Isolation Rating	2500 Vrms (Serial Port to Backplane)
Operating Temperature	0°C to +55°C (32°F to 131°F)
Storage Temperature	-25°C to +85°C (-13°F to 185°F)
Mounting Type	INFI 90 Rack (Single Slot)
Status Indicators	1 Green LED (Power) + 1 Green LED (Run) + 2 Green LEDs (Port Active) + 2 Yellow LEDs (Data Activity) + 1 Green LED (Ethernet Link) + 1 Yellow LED (Ethernet Activity) + 1 Red LED (Fault)

Communications System Features and Protocol Support

The ABB Bailey IEPRD02 bridges INFI 90 control networks to plant-wide information systems. Specifically, it converts Bailey PC90 and Multibus protocols to open standards like Modbus and DNP3. In addition, the 32-bit RISC processor handles real-time data transformation without communication delays. Moreover, the system supports both serial and Ethernet connections for flexible integration. Furthermore, the embedded web server provides diagnostic pages for remote troubleshooting. Consequently, this communications system connects turbine controls to SCADA, DCS, and ERP platforms.

Dual Network Interfaces and Redundancy

This communications system features two independent network interfaces for plant connectivity. For instance, the serial RS-232/RS-422 port connects to legacy Modbus RTU networks up to 500 meters. In addition, the 10Base-T Ethernet port connects to modern TCP/IP networks for high-speed data transfer. Moreover, the system supports hot standby redundancy with automatic failover between two units. Furthermore, the isolated serial port protects against ground loops and electrical noise. Thus, the ABB Bailey IEPRD02 provides reliable connectivity for critical turbine control systems.

Data Mapping and Configuration Flexibility

This communications system maps up to 4096 registers between INFI 90 and plant networks. Specifically, you can assign input registers, output registers, and status registers for data exchange. In addition, a web-based interface allows easy configuration without special software tools. Moreover, the system supports up to 32 serial devices and 8 Ethernet clients simultaneously. Furthermore, a real-time clock timestamps all data for audit trails and diagnostics. Therefore, this system offers flexible data integration for diverse power plant automation requirements.

Energy Storage and Data Retention

This communications system stores energy using seven onboard capacitors for power filtering. Specifically, four electrolytic capacitors smooth the 5 VDC supply for stable processor operation. In addition, three tantalum capacitors provide high-frequency noise suppression for network circuits. Moreover, a lithium battery retains mapping tables and configuration parameters permanently. Furthermore, a watchdog timer resets the system in case of firmware faults. Thus, the ABB Bailey IEPRD02 preserves communication settings for up to five years without external power.

Installation and Diagnostic Indicators

Nine LED indicators provide operational status at a glance on this system. First, a green Power LED lights when the 5 VDC backplane supply is present. Second, a green Run LED flashes during normal firmware execution. Third, two green Port Active LEDs illuminate when each serial port is operational. Fourth, two yellow Data Activity LEDs flash during data transmission or reception. Fifth, a green Ethernet Link LED lights when the network cable is connected. Sixth, a yellow Ethernet Activity LED flashes during TCP/IP traffic. Finally, a red Fault LED indicates hardware errors, configuration conflicts, or network failures. Additionally, the module includes a locking ejector for secure backplane insertion. Thus, you can diagnose communications status instantly without external tools.