1-136 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
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