Performance
CPU: 32-bit RISC processor
Memory: 512 KB (user program), 256 KB (storage)
I/O capacity: up to 32 points (discrete/analog)
Scanning cycle: millisecond level (dedicated for safety interlocking)
Diagnostic coverage:>90% (SFF)
Redundancy: 1:1 hardware redundancy (no master-slave, no disturbance switching)
Power supply and interface
Power supply: 24 VDC (local bus); On site 24 VDC, maximum 4 A
Power consumption: typical 15 W, maximum 20 W
Signal communication:
Dual RJ45 Ethernet (SISnet secure bus)
Supports Modbus TCP/IP and HART protocols
I/O connection: via DeltaV SIS safety I/O module (such as SLS1508 with DI/DO/AI/AO)
Environmental specifications
Working temperature: -40 ° C~+70 ° C
Storage temperature: -40 ° C~+85 ° C
Humidity: 5%~95% (without condensation)
Anti vibration: 5-13.2Hz (1mm peak to peak); 13.2–150Hz（0.7g）
Impact resistance: 10g (11ms half sine wave)
Pollution level: G3 (harsh industrial environment)
Explosion proof: ATEX II 3G Ex ec IIC Gc, IECEx, FM/CSA Class I Div 2
key function
SIL 3 safety interlock: execute emergency stop and safety instrument function (SIF)
Fully redundant architecture: Controller, power supply, and communication are fully redundant with no single point of failure
Intelligent diagnosis: Real time monitoring of module, channel, and wiring faults, early warning
Hot swappable: online module replacement without affecting system operation
HART communication: Bidirectional diagnosis with intelligent field instruments to reduce false trips