YASKAWA Z1000U Series Quick Start Manual page 55

The wait time t is determined by the output frequency when the Run command is removed and by the active deceleration time.
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b1-04: Reverse Operation Selection
Enables and disables Reverse operation. For some applications, reverse motor rotation is not appropriate and may cause
problems (e.g., air handling units, pumps, etc.).
No.
b1-04
Setting 0: Reverse Enabled
Possible to operate the motor in both forward and reverse directions.
Setting 1: Reverse Disabled
Drive disregards a Reverse run command or a negative frequency reference.
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C1-01 to C1-04: Accel, Decel Times 1 and 2
Two different sets of acceleration and deceleration times can be set in the drive by digital inputs, motor selection, or switched
automatically.
Acceleration time parameters always set the time to accelerate from 0 Hz to the maximum output frequency (E1-04).
Deceleration time parameters always set the time to decelerate from maximum output frequency to 0 Hz. C1-01 and C1-02
are the default active accel/decel settings.
No.
C1-01
C1-02
C1-03
C1-04
<1> The setting range for the acceleration and deceleration times is determined by the accel/decel time setting units in C1-10. For example, if the time
is set in units of 0.01 s (C1-10 = 0), the setting range becomes 0.00 to 600.00 s.
Switching Acceleration Times by Digital Input
Accel/decel time 1 is active by default if no input is set. Activate accel/decel times 2, 3, and 4 by digital inputs
(H1-oo = 7 and 1A) as explained in
Accel/Decel Time Sel. 1
H1-oo = 7
0
1
Figure i.50 shows an operation example for changing accel/decel. times. The example below requires that the stopping method
be set for "Ramp to stop" (b1-03 = 0).
YASKAWA ELECTRIC TOEP C710636 11E Z1000U HVAC MATRIX Drive Quick Start Guide
Run wait time t
Active deceleration time
Momentary Power Loss
Minimum Baseblock
Time (L2-03)
Min output
frequency
Figure i.49 Run Wait Time Depending on Output Frequency
Parameter Name
Reverse Operation Selection
Parameter Name
Acceleration Time 1
Deceleration Time 1
Acceleration Time 2
Deceleration Time 2
Table i.29.
Table i.29 Accel/Decel Time Selection by Digital Input
Accel/Decel Time Sel. 2
H1-oo = 1A
0
0
i.5 Start-Up Programming and Operation
100%
Output frequency
(Max output
when Stop command
frequency)
was entered
Setting Range
Setting Range
0.0 to 6000.0 s
Acceleration
C1-01
C1-03
Default
0, 1 1
Default
<1>
10.0 s
Active Times
Deceleration
C1-02
C1-04
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