Template: RPi Zero Relay Spec

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Overview

Industrial 6-Channel Relay Module For Raspberry Pi Zero, RS485/CAN Bus, Power Supply Isolation, Photocoupler Isolation.

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, and needs no extra power supply for the isolated terminal.
  • Onboard photocoupler isolation, prevents interference from external high-voltage circuit connected to the relay.
  • Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic.
  • Onboard resettable fuses and protection diodes, ensuring current/voltage stable output, preventing over current/voltage, and 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.

Specifications

  • Supply voltage: 7V~36V
  • CAN control chip: MCP2515
  • CAN transceiver: SN65HVD230
  • 485 transceiver: SP3485
  • Product size: 123mm x 87.92mm
  • Fixed hole diameter: 3.5mm

Pinouts

  • CAN bus
PIN Raspberry Pi (BCM) Description
GND GND Ground
SCK SCK SPI clock input
MOSI MOSI SPI data input
MISO MISP SPI Data output
CS CE0 Data/Command Selection
INT 25 Interrupt output
  • RS485 bus
PIN Raspberry Pi (BCM) Description
GND GND Ground
RXD RXD UART receive
TXD TXD UART transimit
  • Relay interfaces
PIN Raspberry Pi (BCM) Description
GND GND Ground
IN_CH1 GPIO5 Relay Channel 1
IN_CH2 GPIO6 Relay Channel 2
IN_CH3 GPIO13 Relay Channel 3
IN_CH4 GPIO16 Relay Channel 4
IN_CH5 GPIO19 Relay Channel 5
IN_CH6 GPIO20 Relay Channel 6