Functional Safety Over EtherCAT Controlled Safety Drive System

Renesas’ FSoE controlled reference design features a safety motor drive with a safety industrial network control

Image of Renesas' FSoE Controlled Safety Drive SystemRenesas’ functional safety over EtherCAT (FSoE) controlled safety drive system includes two independent RX72N 32-bit microcontrollers (MCUs) so if the system hits an unwanted state, control is maintained and it can safely cut power to the motor. The FSoE safety network is one of the most well-known safety protocols in industrial systems.

The safety data, such as the emergency stops, comes from the safety sensor or safety programmable logic controller (PLC) through the EtherCAT communication block. This safety data is checked by both RX72N MCUs individually, and if either shows an emergency, either one (or both) RX72N MCUs can cut off the motor power to avoid dangerous situations.

The safety control block consists of two RX72N MCUs, which manage motor emergency, stop control, and safety protocol data processing. According to the international safety standards (IEC 61508, ISO 13849-1), redundancy in the system is required. This redundancy is achieved by having dual RX72N MCUs. Each RX72N MCU operates the same process and can check each other through the cross-monitoring interface.

Renesas supports required software for the safety control block, such as self-test software and control software system (self-test software kit and SIL3 system software kit). By using these safety solutions, customers can shorten their development and certification times and reduce costs. By separating the functional safety block from the non-safety block (network device or motor control device), customers can easily design their applications.

Features
  • RZ/N1L MPU
    • Industrial Ethernet MPU with Arm® Cortex®-M3 core
  • RX66T MCU
    • 160 MHz RXv3 MCU with advanced motor control and optimal for motor control in industrial, home appliances, and robotics applications
  • RX72N MCU
    • RX flagship MCU with the highest performance
    • RXv3 core with high performance and operates at 240 MHz
  • ISL85425 buck regulator
    • 0.5 A regulator with integrated high side FET
    • Supports 3 V to 36 V input voltage range for buck output
  • ISL6144 ORing MOSFET controller
    • High voltage ORing MOSFET controller
  • ISL88017 voltage supervisor
    • Six lead voltage supervisor pin selectable voltage trip points

RZ/N1L MPU

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
SOC ARM CORTEX RZ/N1L 196PINR9A06G034VGBA#AC1SOC ARM CORTEX RZ/N1L 196PIN0View Details

RX66T MCU

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC MCU 32BIT 512KB FLASH 64LFQFPR5F566TEADFM#30IC MCU 32BIT 512KB FLASH 64LFQFP0View Details
IC MCU 32BIT 512KB FLASH 80LFQFPR5F566TEEDFN#30IC MCU 32BIT 512KB FLASH 80LFQFP333 - ImmediateView Details
IC MCU 32BIT 1MB FLASH 144LFQFPR5F566TKGDFB#30IC MCU 32BIT 1MB FLASH 144LFQFP0View Details

RX72N MCU

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC MCU 32BIT 4MB FLASH 224LFBGAR5F572NNDDBD#20IC MCU 32BIT 4MB FLASH 224LFBGA0View Details
RX72N ENVISION KITRTK5RX72N0C00000BJRX72N ENVISION KIT5 - ImmediateView Details
RX72N FUNCTIONAL SAFETY REFERENCRTK0EF0058D02001BJRX72N FUNCTIONAL SAFETY REFERENC4 - ImmediateView Details
IC MCU 32BIT 2MB FLASH 145TFLGAR5F572NDDDLK#20IC MCU 32BIT 2MB FLASH 145TFLGA50 - ImmediateView Details
IC MCU 32BIT 4MB FLASH 145TFLGAR5F572NNHDLK#20IC MCU 32BIT 4MB FLASH 145TFLGA416 - ImmediateView Details
IC MCU 32BIT 4MB FLASH 176LFBGAR5F572NNDDBG#20IC MCU 32BIT 4MB FLASH 176LFBGA0View Details
IC MCU 32BIT 4MB FLASH 176LFQFPR5F572NNHDFC#30IC MCU 32BIT 4MB FLASH 176LFQFP0View Details
IC MCU 32BIT 4MB FLASH 176LFBGAR5F572NNHDBG#20IC MCU 32BIT 4MB FLASH 176LFBGA0View Details

ISL85425 Buck Regulator

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC REG BUCK ADJ 500MA 12DFNISL85415FRZ-T7AIC REG BUCK ADJ 500MA 12DFN0View Details

ISL6144IxZA High Voltage ORing MOSFET Controller

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC OR CTRLR N+1 16TSSOPISL6144IVZA-T7AIC OR CTRLR N+1 16TSSOP0View Details
IC OR CTRLR N+1 16TSSOPISL6144IVZAIC OR CTRLR N+1 16TSSOP0View Details
IC OR CTRLR N+1 20QFNISL6144IRZAIC OR CTRLR N+1 20QFN0View Details

ISL88017 Voltage Supervisor

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC SUPERVISOR 1 CHANNEL TSOT23-6ISL88017IHTZ-T7AIC SUPERVISOR 1 CHANNEL TSOT23-6250 - ImmediateView Details
Published: 2021-03-12