Motorola M68HC08 - Manual (Page 137)

User Guide
Tuning for Customer Motor
DRM028 — Rev 0 Designer Reference Manual
MOTOROLA User Guide 137
When the software parameters are set for the hardware, you should
follow the settings in
Software Customizing to Motor — Voltage and
Current Settings .
6.5.4 Software Customizing to Motor — Voltage and Current Settings
The software parameter settings according to customer motor are
described in this section.
NOTE: First of all, voltage and current settings need to be done. For settings
which must be done, follow the labels MUST_CHANGE_nn and
MUST_CHANGE_EXPER_nn in file const_cust_x.h where nn = 1.
For changes which can be done (but usually are not necessary), follow
the labels CAN_CHANGE_nn and CAN_CHANGE_EXPER_nn in file
const_cust_x.h
Detailed description starts here.
6.5.4.1 Maximal and Minimal Voltage Limits Setting
Most of voltage limit settings do not necessarily need to be done:
Maximal limit of dc-bus voltage [V]:
/* CAN_CHANGE_1: */
#define VOLT_MAX_FAULT_V 380.0
Range: <0,VOLT_RANGE_MAX>
VOLT_MAX_FAULT_V determines the maximal voltage when the
drive fault state should be entered. So, the constants
VOLT_MAX_FAULT_V must be set according to maximal voltage
limit of the motor or the power stage, using the lower value. Therefore,
the setting of this constants is also mentioned in
Voltage Setting
Hardware Customizing under a different label
MUST_IF_HW_CHANGE_3. It should be changed when there are
problems with over-voltage.
Minimal limit of dc-bus voltage [V]:
/* CAN_CHANGE_2_EXPER: */
#define VOLT_MIN_FAULT_V 100.0
Range: <0,VOLT_RANGE_MAX>
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Freescale Semiconductor, Inc.
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