Danfoss VLT AQUA Drive FC 202 Programming Guide

•
On each start command (parameter 29-11 Derag
at Start/Stop).
•
On each stop command (parameter 29-11 Derag
at Start/Stop).
•
On each start/stop command
(parameter 29-11 Derag at Start/Stop).
•
On digital input (parameter group 5-1* Digital
Inputs).
•
On frequency converter action with the smart
logic controller (parameter 13-52 SL Controller
Action).
•
As timed action (parameter group 23-** Time-
based Functions).
•
On high power (parameter group 29-2* Derag
Power Tuning).
29-10 Derag Cycles
Range: Function:
Size related* [0 - 10 ] The number of cycles the frequency
converter derags.
29-11 Derag at Start/Stop
Option: Function:
Derag function when starting and stopping
the frequency converter.
[0] * O
[1] Start
[2] Stop
[3] Start and stop
29-12 Deragging Run Time
Range: Function:
0 s* [0 - 3600 s] The time that the frequency converter dwells
at the derag speed.
29-13 Derag Speed [RPM]
Range: Function:
Size related* [ 0 - par. 4-13
RPM]
The speed at which the
frequency converter derags in
RPM.
29-14 Derag Speed [Hz]
Range: Function:
Size related* [ 0.0 - par. 4-14
Hz]
The speed at which the
frequency converter derags in
Hz.
29-15 Derag O Delay
Range: Function:
10 s* [1 - 600 s] The time that the frequency converter
remains o before starting another derag
pulse. Allows contents of the pump to settle.
29-16 Derag Counter
Range: Function:
0* [0 - 2147483647 ] Shows the number of deragging events.
29-17 Reset Derag Counter
Option: Function:
[0] * Do not reset
[1] Reset counter Select option [1] Reset counter to reset the
deragging counter.
3.25.3 29-2* Derag Power Tuning
The derag feature monitors frequency converter power in a
similar fashion as no-ow. Based on 2 user-dened points
and an oset value, the monitor calculates a derag power
curve. It uses the exact same calculations as no-ow with
the dierence being that derag monitors for high power
and not low power.
Commissioning the no-ow user points via the no-ow
auto set-up also sets the points of the derag curve to the
same value.
Power [kW/HP]
High Speed
power
Par. 29-30,
Par. 29-31
Low Speed
power
Par. 29-26,
Par. 29-27
Activate Derag
Low Speed
Par. 29-24, Par. 29-25
Speed [Hz/RPM]
High Speed
Par. 29-28, Par. 29-29
The calculated power
+ the power factor (readout)
Par. 29-20, Par. 29-21
Derag power factor
Par. 29-22
130BC370.10
Illustration 3.113 Derag Power Tuning
29-20 Derag Power[kW]
Range: Function:
0 kW* [0 - 0 kW] Readout of calculated derag power at actual
speed.
Parameter Description Programming Guide
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Danfoss VLT AQUA Drive FC 202 Specifications

General

Brand	Danfoss
Model	VLT AQUA Drive FC 202
Category	DC Drives
Language	English