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 + Stepper drives	RED +5V to pots and RED stepper opto inputs common +
J3	2	power J11	GREY DGnd
	4	power J11	GREY Din 6 read state of door guard switch
	9	power J11	PURPLE Din 1 read state of front panel vac switch
	11	power J11	PURPLE DGnd
J4		J4 pin	Link
		J4 pin	Link
J5	2	J6 pin 7	GREY DGnd
	9	J6 pin 9	PURPLE DGnd
	11	VFD pin 7	BLUE Analog Gnd
	12	VFD pin 6	RED Analog out spindle speed
J6	2	Example	BLUE DGnd estop chain
	6	Example	RED Din 11 estop chain in
	7	?? limit to J5 pin 2	GREY Din 12
	8	?? limit to pin 11	PINK Din 13
	9	?? limit to J5 pin 9	PURPLE Din 14
	11	?? limit to pin 8	PINK DGnd
J7	9	power ??	RED Dout 15 Brake enable low to free Z axis
J8	2	power J10 pin1	WHITE
	8	power J10 pin2	YELLOW vacuum pump low to enable
	9	power J10 pin 3	PURPLE door lock low to enable
	10	power J10 pin 4	RED relay common +ve
	11	power J10 pin 5	BLACK DGnd
J9	1	Front panel pots	GREEN/YELLOW Shield
	2	Spindle pot slider	GREEN Ain0
	3	pot gnd	BLUE AGnd
	4	Feedrate pot slider	YELLOW Ain1
	5	pot gnd	BLUE AGnd
	6	pot gnd	BLUE AGnd

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 mains out unused
J4	Example	Bridge rectifier	AC out / DC in
J5	Example	Example	AC
J6	Example	control board	DC power out to controller
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
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
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 File:Baldor-VS1ST-Micro-Series-Manual.pdf

{ add configuration parameters }

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

Stepper drive (MSD 556)

Microstep driver File:MSD556-V2.0 stepper-drive-datasheet-v3.0.pdf

pin assignment

Connector	pin	destination	description
1	1	Control board	+5V opto common in
	2	Control board	Step opto low to assert
	3	Control board	+5V opto common in
	4	Control board	Dir opto low to assert
2	1	Power J6	RED +37V in
	2	Power J6	BLACK 0v
	3	motor	BLACK
	4	motor	ORANGE
	5	motor	RED
	6	motor	YELLOW