Parameters
vacon • 147
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
P3.1.4.12.2 I/
F
START
FREQ
I/f start function is used when the drive’s output frequency is below this frequency limit. When the
output frequency exceeds this limit, the drive operation mode is changed back to normal U/f control
mode.
This parameter defines the current to be fed to the motor when the I/f start function is activated.
7.2.3
Start/Stop Setup
I/O A
START
LOGIC
Values 0...4 offer possibilities to control the starting and stopping of the AC drive with digital signal
connected to digital inputs. CS = Control signal.
The selections including the text 'edge' shall be used to exclude the possibility of an unintentional
start when, for example, power is connected, re-connected after a power failure, after a fault reset,
after the drive is stopped by Run Enable (Run Enable = False) or when the control place is changed
to I/O control.
The Start/Stop contact must be opened before the motor can be started.
The used stop mode is
Coasting
in all examples.
Table 133.
Selection
number
Selection name
Description
0
Coasting
The motor is allowed to stop on its own inertia. The control by the drive is
discontinued and the drive current drops to zero as soon as the stop com-
mand is given.
1
Ramp to min
frequency
After the Stop command, the speed of the motor is decelerated to minimum
frequency according to the set deceleration parameters.
2
Ramp to zero
frequency
After the Stop command, the speed of the motor is decelerated to zero fre-
quency according to the set deceleration parameters.
Table 134. I/O A Start Logic selections
Selection
number
Selection name
Note
0
CS 1: Start Forward
CS 2: Start Backward
The function takes place when the contacts are closed.
1
CS 1: Start Forward
CS 2: Reverse
The function takes place when the contacts are closed.