Motorola M68HC08 - Manual (Page 135)

User Guide
Tuning for Customer Motor
DRM028 — Rev 0 Designer Reference Manual
MOTOROLA User Guide 135
/* MUST_IF_HW_CHANGE_1: */
#define DUTY_PWM_MAX 0.96
Range: <0,1>
Proportional value of maximal PWM duty cycle is determined by
power stage boards used.
DUTY_PWM_MAX must be set for any hardware customizing. Some
hardware boards need maximal duty cycle<1, in order to charge high
side drivers for power inverters.
6.5.3.3 Voltage Setting Hardware Customizing
Maximal measurable voltage determined by hardware voltage sensing
[V]:
/* MUST_IF_HW_CHANGE_2: */
# define VOLT_HW_MAX 407.0
Range: <0,infinity)
VOLT_HW_MAX must be changed when voltage sensing range is
different from default hardware.
Maximum limit of dc-bus voltage allowable for the hardware [V]:
/* MUST_IF_HW_CHANGE_3 */
#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 constant
VOLT_MAX_FAULT_V must be set according to maximal voltage
limit of the power stage or the motor, using the lower value. Therefore,
setting this constant is also mentioned in
Maximal and Minimal
Voltage Limits Setting under a different label (CAN_CHANGE_1).
6.5.3.4 Current Setting Hardware Customizing
Maximal measurable current determined by hardware current sensing
[A]:
/* MUST_IF_HW_CHANGE_4: */
#define CURR_HW_MAX_A 2.93
Range: <0,infinity)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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