Parameters: 4-** Limits/Warnings - Danfoss VLT AutomationDrive FC 301 Programming Manual

Parameter Descriptions
3-91 Ramp Time
Range:
3 3
3-92 Power Restore
Option:
[0] Off
*
[1] On
3-93 Maximum Limit
Range:
100 %
*
200 %]
3-94 Minimum Limit
Range:
-100 %
*
200 %]
3-95 Ramp Delay
Range:
Size
related
*
102
Function:
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 parameter 3-95 Ramp
Delay, the actual reference is
ramped up/down according to this
ramp time. The ramp time is
defined as the time used to adjust
the reference by the step size
specified in parameter 3-90 Step
Size.
Function:
Resets the digital potentiometer
reference to 0% after power-up.
Restores the most recent digital
potentiometer reference at power-
up.
Function:
[-200 - Set the maximum allowed value for
the resulting reference. This is
recommended if the digital potenti-
ometer is used for fine-tuning of
the resulting reference.
Function:
[-200 - Set the minimum allowed value for
the resulting reference. This is
recommended if the digital potenti-
ometer is used for fine-tuning of
the resulting reference.
Function:
[ 0 - 0 ] Enter the delay required from
activation of the digital potenti-
ometer 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 parameter 3-91 Ramp Time.
Danfoss A/S © 10/2019 All rights reserved.
®
VLT AutomationDrive FC 301/302

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.
4-10 Motor Speed Direction
Option:
[0]
[1]
[2]
4-11 Motor Speed Low Limit [RPM]
Range:
Size
related
*
Function:
NOTICE
This parameter cannot be
adjusted while the motor is
running.
Select the motor speed direction(s)
required. Use this parameter to
prevent unwanted reversing. When
parameter 1-00 Configuration Mode
is set to [3] Process,
parameter 4-10 Motor Speed
Direction is set to [0] Clockwise as
default. The setting in
parameter 4-10 Motor Speed
Direction does not limit options for
setting parameter 4-13 Motor Speed
High Limit [RPM].
Clockwise The reference is set to CW rotation.
Reversing input (default terminal
19) must be open.
Counter The reference is set to CCW
clockwise rotation. Reversing input (default
terminal 19) must be closed. If
reversing is required with reverse
input open, the motor direction can
be changed by
parameter 1-06 Clockwise Direction.
Both Allows the motor to rotate in both
directions directions.
Function:
[ 0 - par. 4-13 Enter the minimum limit for motor
RPM] speed. The motor speed low limit
can be set to correspond to the
manufacturer's recommended
minimum motor speed. The motor
speed low limit must not exceed
the setting in parameter 4-13 Motor
Speed High Limit [RPM].
M0013101