YASKAWA T1000A - Page 115

5.2 b: Application
YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual 115
Parameter Details
5
The wait time t is determined by the output frequency when the Run command is removed and by the active deceleration
time.
Figure 5.7
Figure 5.7 Run Wait Time Depending on Output Frequency
n b1-04: Reverse Operation Selection
For some applications, reverse motor rotation is not appropriate and may cause problems (e.g., air handling units, pumps,
etc.). Setting parameter b1-04 to 1 instructs the drive to ignore any Reverse run commands.
Setting 0: Reverse operation enabled
Possible to operate the motor in both forward and reverse directions.
Setting 1: Reverse operation disabled
Drive disregards a Reverse run command or a negative frequency reference.
n
b1-05: Action Selection below Minimum Output Frequency (CLV and CLV/PM)
Parameter b1-05 sets the operation when the frequency reference is lower than the minimum output frequency set in
parameter E1-09.
Setting 0: Follow the Frequency Reference
The drive adjusts the motor speed following the speed reference, even if the frequency reference is below the setting of
parameter E1-09. When the Run command is removed and the motor speed is smaller than the setting of b2-01, Zero
Speed Control (not position lock) is performed for the time set in parameter b2-04 before the drive output shuts off.
Figure 5.8
Figure 5.8 Run at the Frequency Reference
No. Parameter Name Setting Range Default
b1-04 Reverse Operation Selection 0 or 1 0
No. Parameter Name Setting Range Default
b1-05 Action Selection below Minimum Output Frequency 0 to 3 0
Min output
frequency
100%
(Max output
frequency)
Output frequency
when Stop command
was entered
Run wait time t
Active deceleration time
Min Baseblock Time (L2-03)
Zero Speed
Control
b2-01 Zero
Speed Level
Run
Command
Frequency
reference
Motor
Speed
OFF ON
Zero Speed
Control
E1-09 Min.
Frequency
b2-04
Zero Speed Time at Stop
E1-09
b2-03
Zero Speed Time at Start
IM: Initial Excitation
PM: Zero Spd. Contr.