Technical Specifications High‑integrity 32‑bit RISC processor with 96 MHz clock frequency. RAM capacity is 32 MB, flash memory is 16 MB for firmware and safety application storage. Nominal power supply 24 V DC, allowable input range 19.2‑30 V DC. Typical power consumption 15.8 W. Operating temperature 0 ℃‑60 ℃, non‑condensing relative humidity 5%‑95%. Equipped with dual 10/100 Mbps Ethernet interfaces, ModuleBus, CEX‑Bus expansion bus, redundancy control link and dual redundant power input terminals. Supports maximum twelve CEX‑Bus peripheral modules. Protection class IP20 for cabinet‑mount installation. It passes SIL3 functional safety certification, complies with IEC61508 safety standard. Satisfies industrial EMC anti‑interference certification requirement.
Functional Features Supports standard and safety‑related IEC61131‑3 programming languages for safety instrumented system. Implements hot‑standby redundancy function when paired with second PM865K01 unit. Dedicated high‑integrity hardware self‑diagnosis mechanism covers CPU, memory, power circuit and every communication channel, includes safety‑related circuit fault detection. Lithium battery maintains RAM safety‑variable data after main power loss. Real‑time clock provides high‑precision time stamp for safety‑related alarm and event log. Supports online partial program download under safety‑compliant operation procedure. 
Application Scenarios SIL3 safety‑related controller for petrochemical process safety system, energy plant safety interlock cabinet and chemical high‑risk process automation. Used for single high‑integrity controller cabinet and safety‑related redundant controller cabinet. Cooperates with S800 safety‑rated I/O modules for safety signal acquisition and safety actuator output. Integrates with System 800xA operator station for safety‑process monitoring, safety event historical recording and safety‑alarm management. Applied to industrial sites where functional safety certification is mandatory.
Installation Requirements Mount the base plate onto cabinet DIN rail or rack bracket, confirm mechanical locking is fully completed. Connect 24 V DC power to detachable screw terminal block strictly following polarity marking.
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