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Programming Your Application
690+ Series Frequency Inverter
Quadratic/Constant Torque Selection
When selecting or de-selecting Quadratic Torque mode, several parameter values and their
limits are modified.
The parameters affected are shown in the table below.
Note:
When changing to or from Quadratic Torque mode, you will be requested to
confirm your actions on the MMI. This is intended to remind you of the effects
detailed below.
Change from CONSTANT TORQUE to QUADRATIC TORQUE
Function Block
Parameter
Set to
Note
PATTERN GEN
FREQ SELECT
3 kHz
Cannot be changed
INVERSE TIME
DELAY
60.0 s
High Limit 60.0 s
INVERSE TIME
Max Overload Level
110.0 %
Internal Parameter
CURRENT LIMIT
CURRENT LIMIT
100.0 %
High Limit set 110.0 %
VOLTAGE
CONTROL
BASE VOLTS
115.0 %
High Limit 115.47 %
Change from QUADRATIC TORQUE to CONSTANT TORQUE
Function Block
Parameter
Set to
Note
PATTERN GEN
FREQ SELECT
3 kHz
Can be changed
INVERSE TIME
DELAY
60.0 s
High Limit 60.0 s
INVERSE TIME
Max Overload Level
150.0 %
Internal Parameter
CURRENT LIMIT
CURRENT LIMIT
150.0 %
High Limit set 150.0 %
VOLTAGE
CONTROL
BASE VOLTS
100.0 %
High Limit 115.47 %
MMI Menu Map
1
SETUP
QUADRATIC
TORQUE
or
MMI Menu Map
1
SETUP
2
MOTOR CONTROL
3
FEEDBACKS
QUADRATIC
TORQUE