Sequent Microsystems 3 40A/240V Relays RS485 Daisy-Chainable HAT for Raspberry Pi

Description

• Sequent Microsystems 3 40A/240V Relays RS485 Daisy-Chainable HAT for Raspberry Pi
• Manage heavy-duty, three-phase loads with ease
• Integrates seamlessly via I2C, Python, or Node-RED
• Daisy-chain up to 32 cards using RS485
• Compatible with all Raspberry Pi versions
• Features resettable fuse and software self-test

The Sequent Microsystems 3 40A/240V Relays RS485 Daisy-Chainable HAT for Raspberry Pi is designed to enable the Raspberry Pi to manage heavy-duty, three-phase industrial loads. This card integrates seamlessly with the Raspberry Pi through the I2C port and can be operated using command line, Python, or Node-RED drivers. Additionally, it can function independently when mounted on a DIN-rail, controlled via the RS485/MODBUS port from any standard PLC. The card features status LEDs to indicate relay activity and a power LED to show when power is applied. A convenient push-button switch allows for the shutdown of the Raspberry Pi without the need for a keyboard and monitor. Compatibility extends across all Raspberry Pi versions from Zero to 5, ensuring flexibility in application. The card requires a 12V power supply, which is connected through its own pluggable connector, and it includes an internal converter to supply 5V and up to 2A for the Raspberry Pi. Although the large size of the 40A relays prevents stacking multiple cards, up to 32 cards can be daisy-chained using the RS485 port. A DIP switch on the back of the board allows for the selection of the RS485 local address when multiple cards are used. The card also includes a general-purpose push-button that can be programmed for various tasks, such as activating relays. Note: Shutting down the Raspberry Pi by turning off the power can result in SD card failure; a shutdown command should be used before power cut-off.

View moreWhat’s Included

• 1x Sequent Microsystems 3 40A/240V Relays RS485 Daisy-Chainable HAT for Raspberry Pi
• 1x Mounting hardware: four M2.5x18mm male-female brass standoffs, four M2.5x5mm brass screws, four M2.5 brass nuts
• Connector plugs
• DIN-rail mounting brackets and screws

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• Pluggable connectors for 26-16 AWG wires for 12V power and RS485
• Daisy-chainable to 32 cards via RS485 port
• On-board processor included
• Each relay can switch up to 40A and 240VAC, 30VDC
• Heavy-duty 40A/750V terminal block for output contacts
• RS485/MODBUS port with TVS protection and dual connectors
• General-purpose push-button
• LED indicators on each relay
• All mounting hardware included: stand-offs, screws, and nuts
• DIN-Rail mounting clips included
• On-board resettable fuse
• Software self-test capability
• Uses only I2C port; all GPIO pins available
• Compatible with any Raspberry Pi from ZERO to 5
• Power supply: 12V/8A pluggable connector with reverse polarity protection
• Contact configuration: SPST-NO
• Contact rating: 40A/277 VAC inductive load, 40A/VAC resistive load, 40A/30VDC
• On/off time: 20ms maximum each
• Electrical endurance: 600 cycles/hour at full load
• Mechanical endurance: 18,000 cycles/hour with no load
• Electrical life: 50,000 operations minimum at 40A 277VAC
• Mechanical life: 10,000 operations minimum with no load