Omron VARISPEED G7 Instruction Manual page 304

Characteristic
Select the high startup torque V/f pattern
only in the following cases.
• The wiring distance between Inverter and
motor is large (approx. 150 m min.)
High Startup
• A large torque is required at startup (ele-
Torque (See
vator loads, etc.)
*
Note)
• An AC reactor is inserted in the Inverter
input or output.
• You are operating a motor that is less
than optimum.
Fixed Output This pattern is used for frequencies of 60
Operation Hz or higher. A fixed voltage is applied.
* The torque is protected by the fully automatic torque boost function, so normally there is no need to use this pattern.
When you select these patterns, the values of constants E1-04 to E1-10 are changed automatically. There are
three types of values for E1-04 to E1-10, depending on the Inverter capacity.
0.4 to 1.5 kW V/f pattern
•
2.2 to 45 kW V/f pattern
•
55 to 300 kW V/f pattern
•
The characteristics diagrams for each are shown in the following pages.
Application
Set
Specifications
Value
50 Hz specifications, medium startup
8
torque
9 50 Hz specifications, large startup torque
60 Hz specifications, medium startup
A
torque
B 60 Hz specifications, large startup torque
90 Hz specifications, voltage saturation at
C
60 Hz
120 Hz specifications, voltage saturation at
D
60 Hz
180 Hz specifications, voltage saturation at
E
60 Hz
Individual Functions
109
6-