CHAPTER 12: DESCRIPTION OF PARAMETER SETTINGS
63-4528—04 176
• If the motor load is too large or drive acceleration time is too short, the VFD output current may increase abruptly during
acceleration and it may cause motor damage or trigger protection functions (OL or OC). This parameter is used to prevent this
situation
• During acceleration, the VFD output current may increase abruptly and exceed the value specified by Pr.06-02 due to rapid
acceleration or excessive load on the motor. When this function is enabled, the VFD will stop accelerating and keep the output
frequency constant until the current drops below the maximum value.
• When the over-current stall prevention is enabled, drive deceleration time will be larger than the setting
• When the Over-Current Stall Prevention occurs due to too small motor capacity or in the factory setting, please decrease
Pr.06-02 setting.
• When there is any problem by using acceleration time, refer to the following items to solve it
• Related parameters: Pr.01-12, 01-14, 01-16, 01-18 (settings of accel. time 1~4), Pr.01-36
1. Add the suitable acceleration time.
2. Related parameters: Pr01-12, 01-14, 01-16, 01-18 for Acceleration Time 1, Time 2, Time 3 and Time 4; Pr.01-36 for
Optimal Acceleration/Deceleration Setting to 1, 3 or 4 (auto accel.), Pr.02-13~02-14 for (Multi-function Output 1 RY1,
RY2), Pr. 02-16~02-17 for Multi-function Output (MO1, 2)
a
06 - 02 Over-current Stall Prevention during Acceleration
Settings Heavy duty: 0~160%; 100% drive’s rated current Factory Setting: 120
Normal duty: 0~130%; 100% drive’s rated current Factory Setting: 120
PREVIOUS DECELERATION TIME
M33666
OUTPUT
FREQUENCY
DECELERATION CHARACTERISTIC
WHEN OVER-VOLTAGE STALL
PREVENTION ENABLED
REQUIRED TIME FOR DECELERATION TO 0 Hz WHEN
OVER-VOLTAGE STALL PREVENTION IS ENABLED.
HIGH-VOLTAGE
AT DC SIDE
OVER-VOLTAGE
DETECTION
LEVEL
TIME
TIME
FREQUENCY
HELD
To Next Page
Loading...
