Danfoss vlt FC 102 Programming Guide

2-17 Over-voltage Control
Overvoltage control (OVC) reduces the risk of the frequency
converter tripping due to an overvoltage on the DC link caused
by generative power from the load.
Option: Function:
NOTICE
The ramp time is automatically
adjusted to avoid tripping of
the frequency converter.
[0] Disabled No OVC required.
[2] * Enabled Activates OVC.
2-19 Over-voltage Gain
Range: Function:
100 %* [10 - 200 %] Select overvoltage gain.
3.5 Parameters: 3-** Main Menu -
Reference/Ramps
3.5.1 3-0* Reference Limits
Parameters for setting the reference unit, limits, and
ranges.
See also parameter group 20-0* FC Closed Loop for
information on settings in closed loop.
3-02 Minimum Reference
Range: Function:
Size
related*
[ -999999.999
- par. 3-03
Reference-
FeedbackUnit]
Enter the minimum reference. The
minimum reference is the lowest
value obtainable by summing all
references. The minimum reference
value and unit match the congu-
ration made in
parameter 1-00 Conguration Mode
and parameter 20-12 Reference/
Feedback Unit.
NOTICE
This parameter is used in open
loop only.
3-03 Maximum Reference
Range: Function:
Size
related*
[ par. 3-02 -
999999.999
Reference-
FeedbackUnit]
Enter the maximum reference. The
maximum reference is the highest
value obtainable by summing all
references.
The maximum reference unit
matches:
3-03 Maximum Reference
Range: Function:
•
The conguration selected
in parameter 1-00 Congu-
ration Mode: For [1] Speed
closed loop, RPM; for [2]
Torque, Nm.
•
The unit selected in
parameter 3-00 Reference
Range.
If [9] Positioning is selected in
parameter 1-00 Conguration Mode,
this parameter denes the default
speed for positioning.
3-04 Reference Function
Option: Function:
[0] Sum Sums both external and preset
reference sources.
[1] External/Preset Use either the preset or the
external reference source.
Shift between external and preset
via a command on a digital input.
3.5.2 3-1* References
Select the preset references. Select Preset ref. bit 0/1/2 [16],
[17], or [18] for the corresponding digital inputs in
parameter group 5-1* Digital Inputs.
3-10 Preset Reference
Array [8]
Range: Function:
0 %* [-100 -
100 %]
Enter up to 8 dierent preset
references (0-7) in this parameter,
using array programming. The
preset reference is stated as a
percentage of the value Ref
MAX
(parameter 3-03 Maximum Reference,
for closed loop, see
parameter 20-14 Maximum
Reference/Feedb.). When using
preset references, select preset
reference bit 0/1/2 [16], [17], or [18]
for the corresponding digital inputs
in parameter group5-1* Digital
Inputs.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
74 Danfoss A/S © 10/2019 All rights reserved. M0010001
33

Danfoss vlt FC 102 Specifications

General

Brand	Danfoss
Model	vlt FC 102
Category	DC Drives
Language	English