Yaskawa Z1000 AC Drive HVAC - Manual (Page 166)

Frequency
Reference
Output
Frequency
Jump
Frequency
Width (d3-04)
Jump
Frequency 3
d3-03
Jump
Frequency 2
d3-02
Jump
Frequency 1
d3-01
Frequency
reference
decreases Frequency
reference
increases
Jump
Frequency
Width (d3-04)
Jump
Frequency
Width (d3-04)
Figure 4.33 Jump Frequency Operation
Note: 1. The drive will use the active accel/decel time to pass through the specified dead band range, but will not allow continuous operation in
that range.
2. When setting more than one Jump frequency, make sure that d3-01≥ d3-02 ≥ d3-03.
n E1-03: V/f Pattern Selection
Selects the V/f pattern for the drive and motor from 15 predefined patterns or creates a custom V/f pattern.
No. Parameter Name Setting Range Default
E1-03 V/f Pattern Selection 0 to F <1> F <2>
<1> Settings 0 through E are not available in OLV/PM (A1-02 = 5).
<2> Parameter is not reset to the default value when the drive is initialized using A1-03.
Setting a Predefined V/f Pattern (Setting 0 to F)
Choose the V/f pattern that best meets the application demands from the table below. These settings are available only in
V/f Control modes. Set the correct value to E1-03. Parameters E1-04 to E1-13 can only be monitored, not changed.
Note: 1. Setting an improper V/f pattern may result in low motor torque or increased current due to overexcitation.
2. Drive initialization does not reset parameter E1-03.
Table 4.25 Predefined V/f Patterns
Setting Specification Characteristic Application
0 50 Hz
Constant torque
For general purpose applications. Torque remains constant
regardless of changes to speed.
1 60 Hz
2 60 Hz (with 50 Hz base)
3 72 Hz (with 60 Hz base)
4 50 Hz, Variable torque 1
Variable torque
For fans, pumps, and other applications where the required
torque changes as a function of the speed.
5 50 Hz, Variable torque 2
6 50 Hz, Variable torque 3
7 50 Hz, Variable torque 4
8 50 Hz, Mid starting torque
High starting torque
Select high starting torque when:
• Wiring between the drive and motor exceeds 150 m.
• A large amount of starting torque is required.
• An AC reactor is installed.
9 50 Hz, High starting torque
A 60 Hz, Mid starting torque
B 60 Hz, High starting torque
C 90 Hz (with 60 Hz base)
Constant output
Output voltage is constant when operating at greater than
60 Hz.
D 120 Hz (with 60 Hz base)
E 180 Hz (with 60 Hz base)
4.13 Advanced Drive Setup Adjustments
166 YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual