Description

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