Motorola M68HC08 Software Customizing to Motor Voltage and Current Settings, Range 0,VOLTRANGEMAX

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

User Guide

Tuning for Customer Motor

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>

DRM028 — Rev 0		Designer Reference Manual
MOTOROLA	User Guide	137
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