Milo V2.0 Emergency Stop

Diagram

Milo V2.0 utilises 2 emergency stop circuits, implemented using 2 normally closed switches on each emergency stop button. The first circuit is used to trigger the contactor, which cuts power to the VFD and motors. The second circuit is used to send an emergency stop signal to the mainboard, which triggers a stop or pause in RepRapFirmware and allows the operator to investigate before rebooting.
%3 24V-PSU 24V-PSU 24V Power Supply 9-pin GD +24V 8 GND 9 __FT_1 Insulated Fork 1.5 mm2 RD 24V-PSU:e--__FT_1:w __FT_5 Insulated Fork 1.5 mm2 RD 24V-PSU:e--__FT_5:w __ES1_1 1x 1 m OG       1:OG       __FT_1:e--__ES1_1:w __FT_2 Insulated Fork 1.5 mm2 RD EMERGENCY-STOP EMERGENCY-STOP Emergency Stop 4-pin GD 1 COM 1 2 NC 2 3 COM 3 4 NC 4 __FT_2:e--EMERGENCY-STOP:w __FT_3 Insulated Fork 1.5 mm2 RD EMERGENCY-STOP:e--__FT_3:w __FT_7 Insulated Fork 1.5 mm2 RD EMERGENCY-STOP:e--__FT_7:w __FT_8 Insulated Fork 1.5 mm2 RD EMERGENCY-STOP:e--__FT_8:w __ES1_2 1x 1 m OG       1:OG       __FT_3:e--__ES1_2:w __FT_4 Insulated Fork 1.5 mm2 RD CONTACTOR CONTACTOR AC Contactor with 24V DC Coil 8-pin GD 7 ABC+ 8 ABC- __FT_4:e--CONTACTOR:w __ES1_3 1x 1 m OG       1:OG       __FT_5:e--__ES1_3:w __FA_1 Crimp Ferrule 0.25 mm2 GY MAINBOARD MAINBOARD BigTreeTech Scylla V1.0 GD 39 IO-IN 39 41 IO-IN-VCC 41 48 RELAY-COM 48 49 RELAY-NO 49 __FA_1:e--MAINBOARD:w __FA_2 Crimp Ferrule 0.25 mm2 GY MAINBOARD:e--__FA_2:w __ES1_4 1x 1 m OG       1:OG       __FA_2:e--__ES1_4:w __FT_6 Insulated Fork 1.5 mm2 RD __FT_6:e--CONTACTOR:w __ES2_1 1x 1 m YE       1:YE     IO-IN:1:SIG   __FT_7:e--__ES2_1:w IO-IN IO-IN 3 Pin JST 3-pin VT 1 SIG 1 2 GND 2 3 VCC 3 IO-IN:e--MAINBOARD:w IO-IN:e--MAINBOARD:w __ES2_2 1x 1 m YE       1:YE     IO-IN:2:GND   __FT_8:e--__ES2_2:w __ES1_1:e--__FT_2:w __ES1_2:e--__FT_4:w __ES1_3:e--__FA_1:w __ES1_4:e--__FT_6:w __ES2_1:e--IO-IN:w __ES2_2:e--IO-IN:w

Bill of Materials

Id Description Qty Unit Designators
1 Cable, 1 wires, OG 4 m
2 Cable, 1 wires, YE 2 m
3 Connector, 24V Power Supply, 9 pins, GD 1 24V-PSU
4 Connector, 3 Pin JST, 3 pins, VT 1 IO-IN
5 Connector, AC Contactor with 24V DC Coil, 8 pins, GD 1 CONTACTOR
6 Connector, Crimp Ferrule, 0.25 mm2, GY 2
7 Connector, Emergency Stop, 4 pins, GD 1 EMERGENCY-STOP
8 Connector, Insulated Fork, 1.5 mm2, RD 8