Application Scenario
Safety interlock for high-pressure polymerization reactors.
System Configuration
ARMxy Explosion-Proof Controller
X-DI Module (monitors pressure switches and emergency stop buttons)
X-DO Module (controls pressure relief solenoid valves)
Implementation
Digital Input Monitoring:
Mechanical pressure switches (normally closed contacts)
Dual-channel temperature switches (redundant design for enhanced safety)
When the set pressure threshold is reached, the X-DO Module triggers a three-stage pressure relief process.
All event records are transmitted to the DCS (Distributed Control System) via RS485 communication.
Advantages
Safety personnel can remotely access interlock event logs.
Fully compliant with IEC 61511 SIL3 safety integrity level requirements.
Combined with BLRAT and OpenPLC, enables remote control and operation, reducing the need for on-site human intervention and enhancing personnel safety.
