STEVAL-SILPLC01

STEVAL-SILPLC01 is a PLC solution with 1oo2 architecture, featuring the CLT03-2Q3dual channel digital input and the IPS160HF single channel digital output. The hardware is designed to meet the SIL level. It has been officially assessed by TÜV Italia (TÜV SUD Group) in compliance with SIL 2 / PL d requirements: random failure rates, systematic capability (for the hardware), architectural constraints in accordance with IEC 61508, EN 62061, EN ISO 13849-1, and EN ISO 13849-2 standards. The system is built around the STM32H723VG microcontroller. It is able to manage connectivity, load actuation and system diagnostic check for power management, digital input/output ICs, and temperature monitoring at the same time. The solution integrates DC-DC converters in a buck configuration powered by the L7987L and L7983. Several diagnostic and protection circuits are available on the board to ensure the system proper functionality and meet the IEC61508-2 requirements.

• STM32H723VG Arm® Cortex®-M7 32-bit RISC core operating at up to 550MHz
• CLT03-2Q3 self-powered digital input current limiter, IPS160HF single channel high-side switch
• L7987L 61V 2A asynchronous step-down switching regulator
• ISOSD61 16bit isolated sigma-delta modulator, single-ended and LVDS interfaces
• Main supply voltage of 24÷36V (max 60V)
• Power management circuit for digital circuits voltage reference generation
• Designed to meet IEC61508 SIL 2 level
• Inductive load demagnetization and direct output diagnostics available on board
• Real-time communication with EtherCAT, RS485 PHY
• Six-layer stack-up to improve immunity on real-time communication