Danfoss VACON 3000 Application Manual page 186

VACON® 3000
Application Guide
Only when the drive is in stop state, it is possible to activate the Jogging function. It is possible use 2 bi-directional frequency refer-
ences. Activate the Jogging function from the fieldbus or by digital input signals. The Jogging function has a ramp time that is used
always when jogging is active.
The Jogging function starts the drive at the set reference. A new start command is not necessary. The control place does not affect
it.
The Jogging function can be activated from the fieldbus in bypass mode with Control Word bits 10 and 11.
Jogging Ref 1
Jogging Ref 2
Enable DI Jogging
(Digital input signal)
Jogging Ref 1 Activation
(Digital input signal)
Jogging Ref 2 Activation
(Digital input signal)
Fieldbus Control Word Bit 10
Fieldbus Control Word Bit 11
Illustration 31: The Jogging Parameters
7.106 (ID 534) I/f Start
Location in the menu:
• INU application: P3.1.4.12.1
Use this parameter to enable the I/f start function.
When the I/f start function is activated, the drive starts to operate in the current control mode. A constant current is led to the motor
until the output frequency increases above the level that is set in P3.1.4.12.2. When the output frequency increases above I/f Start
Frequency level, the operation mode changes back to the normal U/f control mode.
With a PM motor, use the I/f Start function to start the motor with constant current control. A high power motor gives the best
effect. With a high power motor, the resistance is low and it is not easy to change the U/f curve.
The I/f Start function can also give a sufficient torque for the motor at start up.
[A]
A
Illustration 32: The I/f Start Parameters
186 | Danfoss A/S © 2021.09
Output
Frequency
[Hz]
Jogging Ramp
B
C
D
Parameter descriptions
[s]
AB319735759636en-000101 / DPD01822