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Duet 3 Mainboard 6XD v1.02 - Mainboard for CNC machines with opto-isolated connections
19240032
€220.21
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HARDWARE SPECIFICATIONS
ProcessorPowerful 32-bit Atmel ATSAME70: ARM Cortex-M7 microcontroller with speeds up to 300 MHz.ExpansionCAN-FD BUS for connecting multiple expansion boards.ConnectivityDedicated SPI bus to the computer (e.g., Raspberry Pi) (SBC).Alternatively, connection via Ethernet network.USB-C connection available for initial configurationSupport for external drivers6 ports with step/direction/enable outputs and error inputs. Communication is 5 V single ended.High-current outputs3 high-current outputs (up to 6A each)Medium-current outputs6 medium-current outputs for PWM fans and similar devices, of which 3 support 4-wire fans with PWM and tacho. Arranged in two banks, each bank has individual fuses with selectable voltage between VIN and 12V.Temperature measurement4 thermistor/PT1000 inputs.Support for two temperature expansions for up to 4 PT100 sensors or thermocouples.Inputs/Outputs.Nine I/O connectors with 3.3 V output signal level and 30 V tolerance inputs.4 of the 9 I/O inputs/outputs also have alternative opto-isolated connections.IO_5 to IO_8 connections are also available as opto-isolated inputs and outputs.
Opto-isolated inputs
Opto-isolated inputs can be wired in NPN or PNP mode, depending on the requirements of the system with which they interface.
On the Duet 3 6XD motherboard the schematic of the IO 5 opto-isolated input port is as follows, IO6-8 are the same:
Opto-isolated outputs
Opto-isolated outputs can be wired in NPN or PNP mode, depending on the requirements of the system they interface with.
On the Duet 3 6XD motherboard, the schematic of the opto-isolated IO 5 output port is as follows, IO6-8 are the same:
Power supply monitoringVIN voltage monitoring allows the status to be saved in case of power failure.FirmwareRuns RepRapFirmware 3.4 or later - Supports all common machine geometries, easily configured for machine-specific requirements.
Some of the expansions compatible with this board:- Supports Raspberry Pi or other Single Board Computer (SBC).
- Supports 6 external drivers, additional drivers can be connected via CAN-FD bus using appropriate expansions
- Supports additional IO/output/thermistor via CAN-FD expansion boards
- Supports PT100 and thermocouple expansions for a total of 2 boards (4 channels)
- Supports servo: features 5V signal level output for hobby servo, laser or VFD converter
- Supports LCD PanelDue or via HDMI touch screen connected to the SBC.
- Supports Neopixel LED strip (max. 60 LEDs) or DotStar
OPERATING LIMITS a bit of data for version v1.0- Input supply voltage 11 V to 30 V (14 V-30 V to use built-in 12 V regulator)
- Input connector current rating 25 A maximum or fused limit (whichever is lower)
- High-current outputs 3 high-current outputs up to 6 A each, total high-current heater limit with fuse at 15 A
- Medium current outputs 3 medium current outputs up to 1 A each, each bank of fused medium current outputs at 2 A (note that when set to 12 V there is a total limit of 800 mA)
- External driver Signal voltage 5V nominal (min. 4.2V @ 20mA)
- External driver Signal current 20 mA maximum
- Non-opto-isolated inputs Permanent pullup resistor 27K to +3.3V included. Input voltage limits: -1V to +30V.
- Non-opto-isolated Outputs 3.3V signal level, 470 ohm series resistor
- Opto-isolated inputs 24V nominal, working range from 12V to 50V. Reverse polarity protection included. Compatible with both PNP and NPN PLC outputs.
- Opto-isolated outputs Maximum voltage 55V, maximum current 50mA
- 15A fuses for V_FUSED, 3A for each bank of medium current outputs/
- Current limit 5V 3A total on 5V and 3.3V, including internal current consumption (about 200-300mA), any PanelDue or other display and any Z limit switches/probes that draw significant power, and any connected SBC powered by the Duet.
- 12V 800mA current limit (used only for fan outputs OUT_3 to OUT_8, when selected)
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