This is a 6-ch Relay Module for Raspberry Pi Zero with RS485/CAN. It features embedded protection circuits such as power isolation, Photocoupler Isolation, and TVS diode, etc.
Hardware Analysis Industrial Modbus RTU 6-ch Relay Module
- MCP2515
- SI8642ED-B-IS
- SN65HVD230
- SP3485EN
- LM2596 voltage regulator
- Photocoupler isolation
- 6-channel quality relays
- Power supply isolation
- Resettable fuses
- TVS diodes
- Relay and power indicators
- 40PIN GPIO header
- Relay screw terminals
- Power supply screw terminals
- RS485 bus interface
- CAN bus interface
- RS485 120Ω terminal resistor switch
- CAN 120Ω terminal resistor switch
- Relay control pins
- External power supply jack
- Thickened tracks
Pin Definition:
Features:
- RS485 half-duplex communication: using SP3485, UART control, auto RX/TX switch
- CAN half-duplex communication: using MCP2515 + SN65HVD230 solution, SPI control
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard photocoupler isolation, prevent interference from external high-voltage circuit connected to the relay
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning proof & anti-electrostatic
- Onboard resettable fuses and protection diodes, ensuring current/voltage stable output, preventing over current/voltage, better shock-resistance performance
- High-quality relay, contact rating: ≤10A 250V AC or ≤10A 30V DC
- ABS protection enclosure with rail-mount support, easy to install, safe to use
Package Includes:
1 x ABS protection enclosure (top and bottom)
1 x RPi Zero Relay
1 x Screwdriver
1 x 12V 1A power adapter (OPTIONS)
1 x Screws pack
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