Operating Instructions

Descriptions of Parameter Settings
Descriptions of Parameter Settings
164 | 443
Pr.
Explanation
Settings
Default
06-03
Over-current stall prevention
during acceleration
Normal load: 0 to 150%
(100% corresponds to the rated current of the drive)
Heavy load: 0 to 200%
(100% corresponds to the rated current of the drive)
120
180
● In heavy load (Pr.00-16=1), if the DC voltage is higher than the 875 V
DC
(575V series), 700 V
DC
(460V series) or
350 V
DC
(230 series), the maximum value for Pr.06-03 is 185%.
● If the motor load is too large or the drive’s acceleration time is too short, the output current of the drive may be
too high during acceleration, and it may cause motor damage or trigger the drive’s protection functions (OL or
OC). Use this parameter to prevent these situations.
● During acceleration, the output current of the drive may increase abruptly and exceed the setting value of
Pr.06-03. In this case, the drive stops accelerating and keeps the output frequency constant, and then
continues to accelerate until the output current decreases.
● When you enable the over-current stall prevention, the drive’s acceleration time is longer than the setting.
● When the over-current stall prevention occurs because the motor capacity is too small or operates in the
default, decrease the Pr.06-03 setting value.
● If you encounter any problem with the acceleration time, see the following guides for troubleshooting.
1. Increase the deceleration time to a proper value.
2. Set Pr.01-44 Auto-Acceleration and Auto-Deceleration Setting to 1, 3 or 4 (auto-acceleration)
3. Related parameters: Pr.01-12, 01-14, 01-16, 01-18 (Acceleration Time 1–4), Pr.01-44 Auto-Acceleration and
Auto-Deceleration Setting, Pr.02-13 Multi-function Output 1 (Relay 1), Pr.02-16–02-17 Multi-function Output 2–
3 (MO1, MO2)
Fig. 70:
Pr.
Explanation
Settings
Default
06-04
Over-current stall prevention
during operation
Normal load: 0 to 150%
(100% corresponds to the rated current of the drive)
Heavy load: 0 to 200%
(100% corresponds to the rated current of the drive)
120
180