7.2
Torque ramp
When using the Torque ramp, the output voltage is
controlled, so that the output torque will follow a
predefined optimal torque curve during start and stop
ramp.
For Torque start ramp there is four different adjustable
torque curves. See description of torque profile
parameters for examples on when to use which curve.
The curves are:
•
Constant
•
Linear
•
High inertia
•
Progressive
When using the Torque start ramp start, the rotational
speed is constant if the set torque curve corresponds to
the actual load curve. The output voltage will not increase
linearly, as when using the voltage start ramp,
see Figure
80
.
The Torque ramp benefits the mechanical starting
behaviour of the equipment driven by the motor, to be
softer than when using the Voltage start ramp.
For Torque stop ramp there is one fixed torque curve. This
fixed torque curve is optmimized for pump applications.
Figure 80: Torque start ramp
80
1SFC132081M0201
rpm
Time
Start
U
Time
Start
7
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
Summary of Contents for PSTX30
Page 4: ...Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 6: ...Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 10: ...1 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 16: ...2 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 26: ...3 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 32: ...4 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 44: ...5 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 64: ...6 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 124: ...7 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 128: ...8 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 131: ...9 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 132: ...9 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 142: ...10 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
Page 145: ...11 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com...
