User Manual

TMCM-1311 V1.2 Hardware Manual (Rev. 1.12 / 2013-JUL-05) 8
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3.2.1 Power Connector
The module has a single power connector with the option to have separate supplies for driver
electronics and the digital controller part. A single supply voltage is sufficient. All further voltages
required e.g. for the digital components are generated on-board.
1
3
Pin
Label
Direction
Description
1
GND
Power (GND)
Common system supply and signal ground
2
V
DRIVER
Power
(supply input)
Stepper driver supply voltage. Without this voltage
the stepper driver and any motor connected will not
be energized.
3
V
DIGITAL
Power
(supply input)
Supply voltage for everything else apart from the
stepper motor driver. The on-board voltage regulator
generates the necessary voltages for the digital
circuits from this supply. The pin can be left
unconnected. In this case a diode between V
DRIVER
and
V
DIGITAL
ensures the supply for the digital parts.
ATTENTION:
- The diode has a current rating of 3A. As V
DIGTIAL
is
available at the I/O connectors and at the
reference switch connectors also, always connect
this pin to positive supply voltage in case
substantial amount of current is withdrawn from
these pins for external circuits.
- It is expected that V
DIGITAL
and V
DRIVER
are connected
to the same power supply output when both pins
are used. Otherwise please ensure that V
DIGITAL
is
always equal or higher than V
DRIVER
when
connected (due to the diode).
Table 3.1 Power connector
3.2.2 Motor Connector
A 4 pin JST EH series connector is available for motor connection.
1
4
Pin
Label
Direction
Description
1
A1
Output
Pin 1 of motor coil A
2
A2
Output
Pin 2 of motor coil A
3
B1
Output
Pin 1 of motor coil B
4
B2
Output
Pin 2 of motor coil B
Table 3.2 Motor connector