1. General Information

• Manufacturer: ABB (Switzerland)

• Model Number: PM783F

• Part Number: 3BDH000364R0002

• Product Name: Central Processing Unit Module

• Series: Freelance 800F DCS Control System

• Module Type: Medium-end Redundant CPU Controller Module

• Application: Core processing controller for Freelance DCS system; widely used in traditional thermal power, water supply, cement plant and general chemical industry; responsible for process control, analog regulation, interlock protection and field I/O data collection.

• Installation Rule: Installed in Freelance standard controller rack, dedicated CPU slot

• Compliance: CE, IEC 61131, Industrial EMC Certification

2. Functional Description

• Processor Core: 32-bit High-performance RISC Processor

• Control Logic: Continuous process control, analog loop regulation, sequence interlock logic

• Redundancy Function: Support dual CPU hot redundant backup, bumpless switching

• Task Cycle: Minimum 10ms standard scanning cycle

• Expandability: Matches S800 I/O series, supports large-scale remote I/O expansion

3. Electrical Specifications

• Power Supply: 24 VDC ±15% Industrial DC Power

• Power Consumption: ≤ 16 W typical

• Onboard Memory: 128 MB RAM + 64 MB Flash Memory

• Communication Port: 1×Ethernet + 1×RS485 Fieldbus Interface

• Industrial Protocol: Modbus TCP, Profibus DP, Freelance internal bus

• Storage Design: With replaceable backup battery for data retention

• Isolation Voltage: 1000 VAC electrical isolation protection

4. Environmental Specifications

• Operating Temperature: 0 °C ~ +60 °C (32 °F ~ +140 °F)

• Storage Temperature: -40 °C ~ +85 °C (-40 °F ~ +185 °F)

• Relative Humidity: 5% ~ 95% (Non-condensing)

• Anti-vibration: Compliant with IEC 60068 industrial vibration standard

5. Mechanical Specifications

• Structure: Industrial plastic reinforced shell, compact module structure

• Dimensions (H × W × D): 235 × 105 × 125 mm

• Weight: Approximately 0.78 kg

• Mounting: Standard Freelance rack installation, hot-swap capable

6. Compatible Devices

• System Rack: Freelance 800F Standard Controller Rack

• Matched Module: SD812 Power Module, TU810 Terminal Base

• Matching I/O Series: S800 Digital & Analog I/O Modules

• Upper Software: ABB Freelance Engineering Tool

7. Key Features

• Stable 32-bit processor for continuous industrial process control

• Ethernet + fieldbus dual communication for flexible network topology

• Dual redundant configuration ensures system uninterrupted operation

• Built-in backup battery prevents data loss during power failure

• High compatibility with S800 I/O for diversified signal acquisition

8. Core Definition (Freelance VS AC800M)

• PM783F (Freelance): Traditional DCS, Process-oriented, Cement/Water plant, S800 I/O.

• PM866/PM891 (AC800M): Modern DCS, Logic+Process, Power plant, AX800 I/O.