V/F Pattern Selection: E1-03 - YASKAWA VARISPEED-616G5 Instruction Manual

6.3.2 V/f Pattern Selection: E1-03

6.3.2 V/f Pattern Selection: E1-03
6
User User
Constant Name
Number
E1-03 V/f pattern selection
The V/f pattern can be set to any of the following:
D
One of 15 preset patterns (settings 0 through E)
•
A custom user-set pattern (setting F)
•
The factory setting for E1-03 is "F" (user-defined V/f pattern), but the default contents of this setting
D
are the same as setting "1."
Selecting a Preset V/f Pattern: E1-03 = "0" through "E"
J
Refer to the following table to set one of the 15 preset patterns.
D
Characteristics
These patterns are for general-purpose
applications applications.
Use these patterns when the load torque Use these patterns when the load torque
Fixed torque Fixed torque
is to remain constant for any rotational
speed, such as in straight-line convey- speed such as in straight-line convey-
ors.
Use these patterns when there is a qua- U
dratic or cubic relationship between the dratic or cubic relationship between the
Variable torque Variable torque
rotational speed and load, such as in
fans or pumps. fans or pumps
Select a high starting torque V/f pattern
only in the following cases:
S The wiring distance between the In S The wiring distance between the In-
High starting High starting
S A large torque is required at startup S A large torque is required at startup
torque*
S An AC or DC reactor is connected to
S A motor less than the maximum appli-
These patterns are for applications that These patterns are for applications that
High-speed op-
must rotate at frequencies greater than
eration eration
60 Hz. A fixed voltage is applied at fre- 60 Hz. A fixed voltage is applied at fre-
quencies greater than 60 Hz.
* Normally it isn't necessary to use these patterns because starting torque is ensured by auto-
matic torque boost functions.
The constant settings for E1-04 through E1-10 will be changed automatically when one of these pat-
D
terns is selected. There are three possible settings for these constants depending on the Inverter's ca-
pacity:
A 0.4 to 1.5 kW V/f pattern
•
A 2.2 to 45 kW V/f pattern
•
A 55 to 300 kW V/f pattern
•
The characteristics for these patterns are shown in the diagrams on the following pages.
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Change g
during during Setting Setting
Opera- Range
tion
0 to F
×
Applications
th tt h th i
verter and motor is relatively large
(greater than 150 m).
(such as for heavy axis loads).
the Inverter's input or output the Inverter's input or output.
cable motor is being used.
6 - 22
Valid Access Levels
Unit Factory Factory
V/f V/f with
Setting
Control PG
− F Q Q
Setting Specifications
0 50 Hz
1 60 Hz
2 60 Hz, Voltage saturation at 50 Hz
3 72 Hz, Voltage saturation at 60 Hz
4 50 Hz, cubic
5 50 Hz, quadratic
6 60 Hz, cubic
7 60 Hz, quadratic
8 50 Hz, low starting torque
9 50 Hz, high starting torque
A 60 Hz, low starting torque
b 60 Hz, high starting torque
C 90 Hz, Voltage saturation at 60 Hz
d 120 Hz, Voltage saturation at 60 Hz
E 180 Hz, Voltage saturation at 60 Hz
Open
Flux
Loop
Vector
Vector
× ×