Datasheet

2.4.2.1. External Power Stage Interface Signal Definitions
The following provides a short explanation of the external power stage interface connections
Please refer to the circuit schematics for full details.
Analogue Signals
The analog signals are inputs and should always be in the range 0V to 5V. It may be necessary to adjust when
a different motor is used and the value of the shunt resistor is changed
Drive Signals
The driving signals are outputs and are at logic (5V) level, and can be set as active high or active low
(This can be defined in the motor control project)
Alarm Signal
The alarm is an input and it is active low (no alarm level = 5V).
A pull-up is included on the board in case there is no connection to J10
Hall and Encoder Signals
The hall and the encoder signals are logic inputs and all have appropriate pull-up resistors
Supplementary Signals
Signal “SUP1”, connector pins 24 and 25 can be connected to:
1. The internal power stage bus voltage (VBUS) by connecting Jumper 9 pins 1 - 2
2. The internal power stage 12V drive voltage (VDRV12V) by connecting Jumper 9 pins 2 - 3
3. Unconnected. Jumper 9 left open.
Signal “SUP-2” connector J10 pins 26 and 30 can be connected to
1. The logic supply +5V by connecting jumper JP8
2. Left unconnected
NOTE:
Care should be taken with the connections of Jumpers 8 and 9, when using the external interface
as these supply the local board 5V and either the VBUS or VDRV voltages to the external power stage.
It is recommended that the jumpers are removed to avoid shorting the power supplies together when an
external power unit is used, unless it is necessary to either supply or these voltages to the