Settings in the CoE register
Adaptation of current and voltage
Notice | |
The motor may overheat! In order to prevent overheating of the connected motor it is important to adapt the current and voltage output from the stepper interface to the motor. |
To this end set the index 0x8010:01 "Maximum current" and 0x8010:03 "Nominal voltage" in the CoE register to suitable values (see Fig. Adaptation of current and voltage).
Reduced current can be set in index 0x8010:02. This reduces the coil current when at a standstill (and therefore the power dissipation). Please note that the torque is also reduced.
Base frequency selection
Microstepping is set to 1/64 and cannot be changed. However, the base frequency can be changed (default: 2000). To this end select the terminal and select the CoE Online tab. Change the base frequency by double-clicking on the index 0x8012:05 "Speed range" (Fig. Setting the base frequency).
Selecting the feedback system (only for the module with encoder connections)
Two feedback system options are available for selection:
- Encoder: Use external encoder for position feedback
- Internal Counter (default): Use internal counter for position feedback
 | CoE "Feedback type" By default, the stepper module is set to internal counter. If an external encoder is used, the setting must be changed by double-clicking on the index 0x8012:08 "Feedback type" in the Enum menu (Fig. Selecting the feedback system). |
KA factor
The KA factor can be used to adapt the current during the acceleration phases. The current increase is calculated as follows.
Current increase in mA = speed difference x K A / 1000
The steeper the speed ramp, the higher the current increase.
This value can be set in index 0x8011:07 "Ka factor (curr.)" (see fig. Setting the KA-factor).
