Power a Pi3B+ from the 5V controller supply voltage pin (k40 power supply)

End Goal : power RPi from K40 Power Supply.

Question : What is the Laser Power Supply current capability on the 5V controller supply Pin?
is there enough headroom to power a Rpi ? (on top of the k40 controller card )

the specifications i have managed to find state a 20mA limitation on the 5V line

  • I am presuming that is for the safety interlocks and voltage divider supply ( laser power)
    but no information regarding the 24V (stepper motors) and 5V controller power outputs.

many thanks

Both the 24VDC and 5VDC supplies have little extra capacity when running the machine.
The 5V supply is 1A. All the 5V taps on the LPS come from the same power IC.
The 24 supply is < 4amps

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thanks for confirming,