User Manual
EM303A General Purpose Inverter
101
acceleration/deceleration terminal).
No.
Function
Range
Unit
Default
Type
F3-21
Acceleration/Deceleration Time Unit
0: S 1: min
0
〇
F3-21=0
The unit of acceleration/deceleration time is second. The
acceleration/deceleration time can be set continuously in the range of 0.00
～
600.00 seconds.
F3-21=1
The unit of acceleration/deceleration time is minute. The
acceleration/deceleration time is can be set continuously in the range of
0.00
～
600.00 minutes.
No.
Function
Range
Unit
Default
Type
F3-22
DC Brake Propotion at Start
0.00
～
30.00 30.01
～
150.00
% 35.00
〇
F3-23
DC Brake Time at Start
0.00
～
30.00 S
0.00
〇
Before inverter starts, the motor may run in low speed or in reverse rotating status. If
inverter starts immediately at mean time, overcurrent may occur. In order to avoid
such faults, start DC brake to stop motor before inverter starts, and then the inverter
runs to setting frequency as per setting direction.
F3-22
Different setting values can define different DC brake torques at start.
★
When the parameter
≤
30.00, the percentage base is the rated output voltage of
inverter. While, the DC brake controls the DC voltage generated by motor
windings.
★
When the parameter
≥
30.01, the percentage base is the rated output current of
inverter. While, the DC brake controls the DC current generated by motor
windings.
F3-23
Set the DC brake time at start. Inverter runs immediately when the time is up.
If F3-23=0.00, DC brake is disabled at start.
★
The DC brake process at start is as shown in Figure 7-10.
The function is applied to that one inverter drives multi-motors.
No.
Function
Range
Unit
Default
Type
F3-24
DC Brake Start Frequency at Stop
0.10
～
60.00 Hz
2.00
〇
F3-25
DC Brake Propotion at Stop
0.00
～
30.00
30.01
～
150.00
% 35.00
〇
F3-26
DC Brake Waiting Time
0.00
～
30.00 S
0.00
〇
F3-27
DC Brake Time at Stop
0.00
～
30.00
S 0.00
〇
F3-24
Set the frequency for DC brake to start in the process of ramp-to-stop. Once the
output frequency is lower than this frequency in the process of ramp-to-stop, if
