3-89 Ramp Lowpass Filter Time
Range:
Function:
1 ms
*
[1 - 2000 ms] Use this parameter to set how smoothly
the speed changes.
3.4.10 3-9* Digital Pot.Meter
The digital potentiometer enables increase or decrease of
the actual reference by adjusting the set-up of the digital
inputs using the functions increase, decrease, or clear. To
activate the function, set at least 1 digital input to increase
or decrease.
Speed
Time (s)
Inc
130BA158.11
P 3-95
Illustration 3.29 Increase Actual Reference
Speed
Time (s)
Dec
Inc
130BA159.11
P 3-95
Illustration 3.30 Increase/Decrease Actual Reference
3-90 Step Size
Range:
Function:
0.10 %
*
[0.01 -
200 %]
Enter the increment size required for
increase/decrease as a percentage of the
synchronous motor speed, n
s
. If increase/
decrease is activated, the resulting reference
is increased or decreased by the value set in
this parameter.
3-91 Ramp Time
Range:
Function:
1
s
*
[0 -
3600 s]
Enter the ramp time, that is the time for
adjustment of the reference 0–100% of the
specified digital potentiometer function (increase,
decrease, or clear).
If increase/decrease is activated for longer than the
ramp delay period specified in
, the actual reference is
ramped up/down according to this ramp time. The
ramp time is defined as the time used to adjust the
3-91 Ramp Time
Range:
Function:
reference by the step size specified in
.
3-92 Power Restore
Option: Function:
[0]
*
Off Resets the digital potentiometer reference to 0% after
power-up.
[1]
On Restores the most recent digital potentiometer
reference at power-up.
3-93 Maximum Limit
Range:
Function:
100 %
*
[-200 -
200 %]
Set the maximum allowed value for the
resulting reference. This is recommended if
the digital potentiometer is used for fine-
tuning of the resulting reference.
3-94 Minimum Limit
Range:
Function:
-100 %
*
[-200 -
200 %]
Set the minimum allowed value for the
resulting reference. This is recommended if
the digital potentiometer is used for fine-
tuning of the resulting reference.
3-95 Ramp Delay
Range:
Function:
Size
related
*
[ 0 -
0 ]
Enter the delay required from activation of
the digital potentiometer function until the
frequency converter starts to ramp the
reference. With a delay of 0 ms, the reference
starts to ramp when increase/decrease is
activated. See also
3.5 Parameters: 4-** Limits/Warnings
3.5.1 4-1* Motor Limits
Define torque, current, and speed limits for the motor, and
the reaction of the frequency converter when the limits are
exceeded.
A limit may generate a message in the display. A warning
always generates a message in the display or on the
fieldbus. A monitoring function may initiate a warning or a
trip, after which the frequency converter stops and
generates an alarm message.
Parameter Descriptions
Programming Guide
MG33MP02
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