User’s Manual
97
Figure B-11 shows the stepper-motor driver circuit.
Figure B-11. Stepper-Motor Driver Circuit
The stepper motor(s) can be powered either from the onboard power supply or from an
external power based on the jumper settings on headers JP1 and JP2.
Table B-3. Stepper Motor Power-Supply Options
Header
Pins Connected
Factory
Default
JP1
1–2
9–10
Onboard power supply to U2
×
3–4
7–8
External power supply to U2
JP2
1–2
9–10
Onboard power supply to U3
×
3–4
7–8
External power supply to U3
J3
2
3
4
U2
5
1
6
3
6
11
14
2
1
7
10
9
15
ENABLE1
ENABLE2
MOTOR +
{
MOTOR
{
27 k
W
27 k
W
L293DN
VMA+
MDA1
MDA2
MDA3
MDA4
VMA-
OUT1
OUT2
OUT3
OUT4
IN1
IN2
IN3
IN4
27 k
W
27 k
W
J4
2
3
4
U3
5
1
6
3
6
11
14
2
1
7
10
9
15
ENABLE1
ENABLE2
MOTOR +
{
MOTOR
{
27 k
W
27 k
W
L293DN
VMB-
MDB1
MDB2
MDB3
MDB4
VMB+
®
OUT1
OUT2
OUT3
OUT4
IN1
IN2
IN3
IN4
27 k
W
27 k
W
®
PF4
PF5
PF6
PF7
Summary of Contents for RCM3365
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