User Manual

PD-1140 Hardware Manual (Rev. 1.01 / 2012-JUL-27) 15
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In contrast OUT_0 is able to supply +5V (100mA max.) to an external load. An integrated P-channel
MOSFET allows to switch on / off this +5V supply in software (see figure below). This output might be
used in order to supply +5V to an external encoder circuit.
+5V
microcontroller
GND
OUT_0
GND
100pF
10k
Figure 4.10 General purpose output OUT_0
4.3.3 Motor Connector
As motor connector a 4pin JST PH-series 2mm pitch single row connector is available. The motor
connector is used for connecting the four motor wires of the two motor coils of the bipolar stepper
motor to the electronics.
4
1
Pin
Label
Direction
Description
1
OB2
Output
Pin 2 of motor coil B
2
OB1
Output
Pin 1 of motor coil B
3
OA2
Output
Pin 2 of motor coil A
4
OA1
Output
Pin 1 of motor coil A
Table 4.5 Motor connector
Example for connecting the QSH4218 NEMA 17 / 42mm stepper motors:
M
A
black
green
B
blue
red
TMCM-1140
QS4218 Motor
Motor connector pin
Cable color
Coil
Description
1
Red
B
Motor coil B pin 1
2
Blue
B-
Motor coil B pin 2
3
Green
A-
Motor coil A pin 2
4
Black
A
Motor coil A pin 1