Description
Power Control Board
This device is designed to control the AC power of a CNC machine, contains the following features:
- Inrush current limit with selected time 2.5s/5s
- Built-in fuses
- Full LEDs indication(AC input and output, relays, 12V power input)
- Auto-on function for work without control input signal, the device turns on when voltage is applied to the 12V power input
- Power ready output
- Opto isolated control input and output
- Control input support 3.3V and 5V level signals
LinuxCNC HAL code for connection Machine Power(F2) button:
net machine-is-on <= halui.machine.is-on
net machine-is-on => hm2_7i93.0.gpio.030.out
hm2_7i93.0.gpio.030.out - Mesa output connected to power enable input
Schematic and Layout
Circuit and wiring diagram
soft_start_v1.2.7_circuit.zip
Wiring diagram:
soft_start_v1.2.7-wiring-diagram.jpg
Wiring diagram2:
soft_start_v1.2.7-wiring-diagram2.gif
CAD-Custom parts and enclosures
Relay isolator fr4 shim
soft_start_relay_isolator_v1.2.7.zip
Bottom images
soft_start_v1.2.7_bottom_images.zip
In cnc box photo
in_box_photo.zip
Board drawing:
drawing.gif
Jun 29,2021
1,058 views
Power Control Board
2 Layers PCB 58 x 90 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen
CNC machine power control with soft start function(inrush current limit).
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Published: Jun 29,2021
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