Cabinet Wiring

Original (Baldor) interface wiring

No obvious connector numbering on the board, so these are numbered clockwise starting from the bottom right hand corner (power) with pins numbered consecutively in the same direction - ie pin 1 to pin n run clockwise.

Baldor pin assignment

Connector	pin	destination	description
J1	1	power J6	BLACK 0V
	2	power J6	RED +24 logic supply
	4	power J6	0V
	5	power J6	YELLOW +37 stepper supply (redundant since external stepper drives fitted)
J2	1	Front panel pots	GRN/YELLOW shield
	5	Front panel pots	BLUE 0V
	6	Front panel pots	RED +5V to pots and stepper opto inputs common +
J3	2	power J11	GREY DGnd
	4	power J11	GREY Din 6 connect to DGnd to
	9	power J11	Purple Din 1 connect to Dgnd to enable vac pump
	11	power J11	Purple DGnd
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Estop / power relay board

Connector and pin numbering taken from File:Schematic Design MRP-0850B.pdf

Power board pin assignment

Connector	pin	destination	description
J1	1	mains filter	mains in to relay board
	Example	Example	Example
	Example	Example	Example
J2	Example	mains transformer	in/out windings
	Example	Example	Example
	Example	Example	Example
J3	Example	n/c	AC LV supply out
	Example	Example	Example
J4	Example	Bridge rectifier	AC out / DC in
	Example	Example	Example
J5	Example	Example	AC
	Example	Example	Example
J6	Example	control board	DC power out to controller
	Example	Example	Example
J7	Example	VFD	switched mains supply
	Example	VFD	switched mains supply
	Example	Vacuum pump	switched mains supply
	Example	Vacuum pump	switched mains supply
J8	1	Example	RED estop
	2	Example	RED estop
	3	Example	WHITE Guard switch and door lock
	4	Example	PURPLE Guard switch and door lock
	5	Example	BLACK Guard switch and door lock
	6	Example	BROWN Guard switch and door lock
	7	Example	YELLOW Guard switch and door lock
	8	Example	RED Guard switch and door lock
J9	Example	front panel switch	vacuum pump control
	Example	Example	Example
J10	1	controller J8	WHITE input ?? disable Z axis brake when low
	2	Example	GREY input enable vacuum pump when low
	3	Example	input unlock door when low
	5	Example	estop
	6	Example	estop
Example	Example	Example	Example
J11	1	controller J3	GREY
	2	controller J3	GREY
	3	controller J3	PURPLE
	4	controller J3	PURPLE
J12	1	brake actuator	releases z axis brake when energised
	2	brake actuator	0V
	4	brake actuator	+24
J13	1	J13 pin 4	link
	2	VFD pin 1,2	spindle enable
	3	VFD pin 1,2	spindle enable
	4	J13 pin 1	link
	5	control board J7	input grounded to energise (release) Z axis brake

Spindle drive (Baldor VS1ST)

VFD pin assignment

Connector	pin	destination	description
1	1	Power board	+24V out
	2	Power board	D IN 1 - connect to to pin 1 to enable drive
	6	Control board	An IN 1 - speed control voltage
	7	Control board	0V
	10	estop chain	Relay contacts n/o
	11	estop chain	Relay contacts n/o