ABB KUC755AE106 (3BHB005243R0106) Controller Unit
KUC755AE106 (also known as PM865A) is an ABB AC 800M series high-performance controller, which is the core module of the 800xA DCS control layer. It is designed for process industries such as power, petrochemicals, and metallurgy, providing high reliability redundant control and complex algorithm computing capabilities.

1、 Product Information
Model: KUC755AE106 (complete order number 3BHB005243R0106)
Alias: PM865A
Series: ABB AC 800M (800xA DCS platform)
Manufacturer: ABB (Made in Sweden/Hungary)
Core functions: logic/motion control, PID regulation, data acquisition, network communication, redundant hot standby
Programming standard: IEC 61131-3 (ladder diagram/structured text/FBD, etc.)
Engineering software: Control Builder M (v4.1+)
2、 Technical parameters and specifications
1) Core performance
Processor: PowerPC architecture, clock speed 96 MHz (MPC862)
Memory: 64 MB RAM (program/data), 512 MB Flash (firmware/configuration)
Calculation speed: Boolean 0.01 μ s/instruction, floating-point 0.1 μ s/instruction
Task scheduling: up to 64 tasks, with adjustable cycles from 1 ms to 1000 s
2) Electrical and Communication
Power supply: Backpanel power supply (+5 V/+24 V), power consumption ≤ 20 W
Ethernet: 2 × 10/100 Mbps (RJ45, independent MAC), supports Modbus TCP/Profinet
Serial port: 2 × RS-232C (RJ45), supports HART/traditional devices
Expansion bus: CEX Bus, connecting S800/S900 I/O, maximum 2048 points
Redundancy: 1:1 hot standby (fiber optic synchronization, switching<100 ms)
3) Environment and Physics
Working temperature: 0 ℃~+60 ℃ (industrial grade)
Storage temperature: -40 ℃~+70 ℃
Protection level: IP20 (installed inside the cabinet)
Dimensions (width x height x depth): 119 mm x 186 mm x 135 mm
Weight: Approximately 1.1 kg (including base)
3、 Usage scenarios
Power industry: thermal power DCS, substation automation, generator excitation control, power grid monitoring
Petrochemical industry: compressor/pump control, reactor temperature/pressure closed-loop, SCADA for oil and gas pipelines
Metallurgy: Rolling mill/continuous casting line motion control, blast furnace/heating furnace process optimization
Industrial drive: turbine/gas turbine speed regulation, large motor soft start/frequency conversion control
High reliability redundancy: 1:1 hot standby for critical equipment to avoid downtime risks
4、 Related models (AC 800M series)
PM864 (KUC755AE104): Basic model, no redundancy, small and medium-sized system
PM865K02 (KUC755AE107): Enhanced, redundant+Gigabit Ethernet
PM867 (KUC755AE108): High end model, SIL3 safety certification, 1oo2 redundancy
BC810/BC820: CEX Bus expansion unit, multi I/O segment isolation
SM810/SM811: Security monitoring module, combined with PM865 to achieve SIL2/SIL3
5、 Core advantages
High reliability redundancy: native 1:1 hot standby, switch without disturbance, suitable for critical processes
Strong computing capability: PowerPC+large memory, supporting complex PID/model predictive control
Multi protocol interoperability: dual Ethernet+serial port, seamless integration with third-party PLC/SCADA
Wide temperature anti-interference: industrial grade temperature and EMI protection, suitable for harsh environments
Seamless integration of 800xA: integrated with DCS platform, efficient configuration/operation and maintenance