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* These are values of operation levels for braking transistors built in Inverters of 0.4 to 18.5 kW. Refer to
FOR VARISPEED-600 SERIES INVERTER BRAK-
ING UNIT BRAKING RESISTOR UNIT INSTRUCTIONS (TOBPC720600000)
for operation levels for separately-installed type Braking Resistor Units.
If selecting a fixed V/f pattern (E1-03 = 0 to E) in V/f control the values of the max. voltage (E1-05), the mid.
Output frequency voltage (E1-08), and the min. output frequency voltage (E1-10) will change if the value for
the input voltage setting (E1-01) is changed.
Setting V/f Pattern
Set the V/f pattern in E1-03 when using V/f control (with or without a PG). There are two methods of setting
the V/f pattern: Select one of the 15 pattern types (set value: 0 to E) that have been set beforehand, or set a
user-defined V/f pattern (set value: F).
The factory setting for E1-03 is F. The contents of E1-03 when factory-set to F are the same as when E1-03 is
set to 1.
To select one of the existing patterns, refer to the following table.
* 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.
Inverter Class
E1-01 Setting
OV Detection Level
BTR Operation Level
∗
200 V Class
All values
Approx. 410 V
Approx. 394 V
400 V Class
400 V or more
Approx. 820 V
Approx. 788 V
Less than 400 V
Approx. 720 V
Approx. 682 V
Characteristic
Application
Set
Value
Specifications
Constant Torque
Characteristic
This pattern is used in general applications.
Used when the load torque is fixed, regard-
less of rotation speed, for linear transport
systems.
0
50 Hz specifications
1 (F)
60 Hz specifications
2
60 Hz specifications, voltage saturation at
50 Hz
3
72 Hz specifications, voltage saturation at
60 Hz
Variable torque
characteristic
This pattern is used for loads with torque
proportional to two or three times the rota-
tion speed, such as fans and pumps.
4
50 Hz specifications,
×
3 decrement
5
50 Hz specifications,
×
2 decrement
6
60 Hz specifications,
×
3 decrement
7
60 Hz specifications,
×
2 decrement
High Startup
Torque (See
Note)
*
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.)
• A large torque is required at startup (ele-
vator loads, etc.)
• An AC reactor is inserted in the Inverter
input or output.
• You are operating a motor that is less
than optimum.
8
50 Hz specifications, medium startup
torque
9
50 Hz specifications, large startup torque
A
60 Hz specifications, medium startup
torque
B
60 Hz specifications, large startup torque
Fixed Output
Operation
This pattern is used for frequencies of 60
Hz or higher. A fixed voltage is applied.
C
90 Hz specifications, voltage saturation at
60 Hz
D
120 Hz specifications, voltage saturation at
60 Hz
E
180 Hz specifications, voltage saturation at
60 Hz