AMS DCB-274 manual Baud Rate Jumpers B1, B2, Typical Wiring Diagrams for Step Motors

ADVANCED MICRO SYSTEMS, INC. HARDWARE

PH-0 PH-1 PH-2 PH-3

VMM GND

	High Torque		High Speed		High Speed
6		6		6
5		5		5
4		4		4
3		3		3
2	+ Power	2	+ Power	2	+ Power
1	- GND	1	- GND	1	- GND
	Bipolar Series		Bipolar Parallel		Bipolar 50% Copper
	FIG A		FIG B		FIG C

Typical Wiring Diagrams for Step Motors

Fig. A: Series winding for higher torque and lower current. The inductance is 4 times that of the parallel mode, reducing the maximum obtainable speed.

Fig. B: Parallel winding for better high-speed performance but requires higher drive current. A 4-wire motor is the same as an 8-wire motor, but it is connected (in either parallel or series) internally. Some motors can be rewired at the factory.

Fig. C: A 6 wire motor is a variation of the 8 wire series configuration, where the “center taps” are available. The 6-wire motor can be used in series mode but cannot be connected in parallel. A compromised 50% copper connection can be used, producing higher speed with reduction of torque.

Note: NEVER connect or disconnect the motor when the power is “ON”. Wait at least two minutes after turning off the power before connecting or disconnecting the motor. This will allow proper dissipation of voltage from the unit. Failure to do so may cause damage and void the warranty.

Baud Rate Jumpers (B1, B2)

Jumpers B1and B2 determine the baud rate. Standard UART properties are no parity, 8 data bits, 1 stop bit.

B1	B2		Baud Rate	Comment
N	N	9600		Factory setting N, 8, 1
Y	N		460k	Requires SIN-10 serial adapter
N	Y		38.6k
Y	Y		19.2k

1 2