描述
ABB PM645A产品详情解析
ABB PM645A是AC500系列PLC的高端CPU模块，属于PM600系列，专为大型复杂工业自动化系统设计，具备四核高性能处理器、高实时性、强扩展性及功能安全支持，广泛应用于轨道交通、电力能源、智能制造、智能建筑等领域。以下从核心参数、功能特性、扩展能力、典型应用、选型对比五个维度展开解析：
1.核心参数与硬件规格
1.1基础参数
参数项PM645A规格
处理器Intel Atom E3950四核处理器（主频1.6GHz，睿频2.0GHz，支持Hyper-Threading技术）
内存Flash：2GB（程序存储，支持FAT32/EXT4文件系统）
RAM：1GB DDR4（数据缓存，带ECC纠错）
实时性硬实时任务周期：50μs~1s（软实时任务：<1ms），支持确定性控制（如多轴同步、高速响应）
电源输入24VDC±20%（典型值19.2~30VDC，需搭配PS600系列电源模块，支持冗余供电）
功耗<80W（典型值，含扩展模块功耗）
机械尺寸175mm×120mm×100mm（与AC500系列其他CPU模块兼容）
防护等级IP20（需安装在控制柜内，避免直接暴露于粉尘/水滴）
1.2通信接口
内置接口：
以太网口：2个10/100/1000Mbps端口（支持PROFINET S2 Redundancy、EtherCAT Master/Slave、Modbus TCP Server/Client、OPC UA Server）。
USB 3.0：2个（支持高速程序下载、日志导出、USB-to-Serial调试，速率5Gbps）。
SD卡槽：1个（最大支持128GB，用于数据记录、配方存储、固件升级）。
可选扩展通信模块：
CM695-5G：支持5G NR无线通信（峰值速率2Gbps），实现超低延迟远程控制（如智能电网、自动驾驶测试）。
CM685-TSN：集成时间敏感网络（TSN），支持确定性以太网通信（时间同步精度<1μs）。
CM675-CAN FD：支持CAN FD协议（最大速率5Mbps，兼容新一代汽车电子、工业机器人）。
1.3环境适应性
工作温度：-40℃~+70℃（工业级宽温设计，适用于极寒/高温环境，如北极风电场、沙漠光伏站）。
抗干扰能力：
符合IEC 61000-4-6（传导抗扰15V/m）、IEC 61000-4-4（快速瞬变脉冲群8kV）标准。
耐受20kV静电放电（ESD）、15V/m射频电磁场辐射，适用于强电磁干扰场景（如轨道交通牵引系统）。
ABB PM645A Product Details
The ABB PM645A is a high-end CPU module for the AC500 series PLCs.It belongs to the PM600 series and is designed specifically for large,complex industrial automation systems.Featuring a quad-core high-performance processor,high real-time performance,strong scalability,and functional safety support,it is widely used in rail transit,electric power,smart manufacturing,smart buildings,and other fields.The following analysis focuses on five dimensions:core parameters,functional features,expansion capabilities,typical applications,and model comparison.
1.Core Parameters and Hardware Specifications
1.1 Basic Parameters
Parameter Item PM645A Specifications
Processor:Intel Atom E3950 quad-core processor(1.6GHz base frequency,2.0GHz turbo frequency,supports Hyper-Threading technology)
Memory:Flash:2GB(program storage,supports FAT32/EXT4 file systems)
RAM:1GB DDR4(data cache with ECC)
Real-time Performance:Hard real-time task cycle:50μs to 1s(soft real-time tasks:<1ms),supports deterministic control(such as multi-axis synchronization and high-speed response)
Power Input:24VDC±20%(typical:19.2 to 30VDC,requires a PS600 series power supply module,supports redundant power supply)
Power Consumption:<80W(typical,including expansion module power consumption)
Dimensions:175mm×120mm×100mm(compatible with other AC500 series CPU modules)
IP20 protection rating(must be installed in a control cabinet to avoid direct exposure to dust and water droplets)
1.2 Communication Interfaces
Built-in Interfaces:
Ethernet Ports:Two 10/100/1000Mbps ports(supporting PROFINET S2 Redundancy,EtherCAT Master/Slave,Modbus TCP Server/Client,and OPC UA Server).
USB 3.0:Two(supports high-speed program downloads,log exports,and USB-to-Serial debugging,up to 5Gbps).
SD Card Slot:One(supports up to 128GB,for data logging,recipe storage,and firmware upgrades).
Optional Expansion Communication Modules:
CM695-5G:Supports 5G NR wireless communication(peak rate of 2Gbps),enabling ultra-low-latency remote control(e.g.,for smart grid and autonomous driving testing).CM685-TSN:Integrated with Time-Sensitive Networking(TSN),it supports deterministic Ethernet communication(time synchronization accuracy<1μs).
CM675-CAN FD:Supports the CAN FD protocol(maximum rate of 5Mbps,compatible with next-generation automotive electronics and industrial robots).
1.3 Environmental Adaptability
Operating Temperature:-40°C to+70°C(industrial-grade wide-temperature design,suitable for extremely cold and high-temperature environments,such as Arctic wind farms and desert photovoltaic plants).
Interference Immunity:
Complies with IEC 61000-4-6(conducted immunity 15V/m)and IEC 61000-4-4(fast transient burst 8kV)standards.
Withstands 20kV electrostatic discharge(ESD)and 15V/m radiated radio frequency electromagnetic fields,making it suitable for use in scenarios with strong electromagnetic interference(such as rail transit traction systems).
ABB Model: GBU72 3BHE055094R0002 Model: 3BHE055094R0002 GBU72 Model: GBU72 Model: 3BHE055094R0002 Model: 3BHE031197R0001 Model: 3BHB030310R0001 Model: 73BHE055094R0002 GBU72 Model: 73BHE055094R0002 Model: GBU72 Model: ABB PCS6000 PRODUCT FAMLIY ABB 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101
