Parameters vacon • 153
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7.2.6 Motor Potentiom.
P3.3.4.1 M
OTPOT UP
P3.3.4.2 M
OTPOT DOWN
With a motor potentiometer, the user can increase and decrease the output frequency. By connect-
ing a digital input to parameter P3.3.4.1 (
MotPot UP) and having the digital input signal active, the
output frequency will rise as long as the signal is active. The parameter P3.3.4.2 (
MotPot DOWN)
works vice versa, decreasing the output frequency.
The rate how the output frequency either rises or falls when Motor Potentiometer Up or Down is
activated is determined by the
Motor potentiometer ramp time (P3.3.4.3) and the Ramp accelera-
tion/deceleration times (P3.4.1.2/P3.4.1.3).
The Motor potentiometer reset parameter (P3.3.4.4) will set the frequency reference to zero if ac-
tivated.
P3.3.4.4 M
OTPOT RESET
Defines the logic for resetting the motor potentiometer frequency reference.
Figure 46. Motor potentiometer parameters
Selection
number
Selection name Note
0 No reset The previous motor potentiometer frequency reference is kept past
the stop state and stored to memory in case of power down.
1 Stop state Motor potentiometer frequency reference is set to zero when the drive
is in stop state or the drive is powered down.
2 Powered down Motor potentiometer frequency reference is set to zero only in a
power down situation.
9122.emf
Time [s]
Max
Frequency
Min
Frequency
UP
Motor potentiometer
Motor potentiometer
Motor potentiometer
ramp time
DOWN
Frequency
Reference
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