Table 4.9 Motor Switching and Accel/Decel Time Combinations
Accel/Decel Time 1 (H1-oo = 7)
Motor 1 Selected
(Terminal set to H1-oo = 16 OFF)
Motor 2 Selected
(Terminal set to H1-oo = 16 ON)
Accel Decel Accel Decel
Open C1-01 C1-02 C1-05 C1-06
Closed C1-03 C1-04 C1-07 C1-08
Switching Accel/Decel Times by a Frequency Level
The drive can switch between different acceleration and deceleration times automatically. The drive will switch from accel/
decel
time 4 in C1-07 and C1-08 to the default accel/decel time in C1-01 and C1-02 (C1-05 and C1-06 for motor 2) when the
output frequency exceeds the frequency level set to parameter C1-11. When the frequency falls below this level, the accel/
decel times are switched back. Figure 4.22 shows an operation example.
Note: Acceleration and deceleration times selected by digital inputs have priority over the automatic switching by the frequency level set to C1-11.
For example, if accel/decel time 2 is selected, the drive will use only accel/decel time 2; it will not switch from accel/decel time 4 to the
selected one.
Output Frequency
C1-11
Accel/Decel Time
Switch Frequency
C1-03
setting
When the output frequency
C1-11, drive uses Accel/Decel Time 1 (C1-01, -02)
When the output frequency < C1-11, drive uses Accel/Decel Time 2 (C1-03, -04)
C1-01
setting
C1-02
setting
C1-04
setting
C1-03 =
(accel time from 0 Hz to C1-11) × (E1-04)
C1-11
C1-01 =
(accel time between C1-11 and E1-04) × (E1-04)
(E1-04 - C1-11)
C1-02 =
(decel time between E1-04 and C1-11) × (E1-04)
(E1-04 - C1-11)
C1-04 =
(decel time from C1-11 to 0 Hz) × (E1-04)
C1-11
Figure 4.22 Accel/Decel Time Switching Frequency
n
C6-01: Drive Duty Mode Selection
The
drive has two different duty modes from which to select based on the load characteristics. The drive rated current, overload
capacity, and maximum output frequency will change depending upon the duty mode selection. Use parameter C6-01 to select
Heavy Duty (HD) or Normal Duty (ND) for the application. Refer to Heavy Duty and Normal Duty Ratings on page 234
for details about the rated current.
No. Parameter Name Setting Range Default
C6-01 Duty Mode Selection 0, 1 1 (ND)
Table 4.10 Differences between Heavy Duty and Normal Duty
Characteristics Heavy Duty Rating (HD) Normal Duty Rating (ND)
C6-01 0 1
Performance
100 %
100 %
0 Motor Speed
Rated Load
Overload
150 %
Motor Speed
0
100 %
100 %
120 %
Rated Load
Overload
Application
Use Heavy Duty Rating for applications requiring a high
overload tolerance with constant load torque, such as
extruders and conveyors.
Use Normal Duty Rating for applications in which the torque
requirements drop along with the speed, such as fans and
pumps where a high overload tolerance is not required.
Overload capability (oL2) 150% of drive rated Heavy Duty current for 60 s 120% of drive rated Normal Duty current for 60 s
Stall Prevention during
Acceleration (L3-02)
150% 120%
Stall Prevention during
Run (L3-06)
150% 120%
Default Carrier Frequency 2 kHz 2 kHz Swing PWM
Note:
Changing the Duty Mode selection automatically changes the maximum size motor that the drive can run, sets the E2-oo parameters to
appropriate values (E4-oo for motor 2), and recalculates parameter settings determined by motor capacity (e.g., b8-04, L2-03, n5-02,
L3-24, C5-17, and C5-37).
4.6 Basic Drive Setup Adjustments
144
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
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