•
•
NX *)
M
e
3
0
b
h
1
0
1
.1
0
Illustration 86: Input and Output Pressure Measuring
*
Input pressure measurement selected with parameter
ID 1021
PI-controller actual value input parameter
ID 333
With parameters
ID 1022
and
ID 1023
the limits for the area of the input pressure, where the output pressure is decreased, can be
selected. The values are in percent of the input pressure measurement maximum value. With parameter
ID 1024
, the value for the
output pressure decrease within this area can be set. The value is in percent of the reference value maximum.
Par. ID1024
Output
pressure
drop value
Par. ID1026
Input pressure
high limit
Par. ID1032
Input pressure
low limit
t
t
output pressure
input pressure
e
3
0
b
h
0
7
6
.1
0
Illustration 87: Output Pressure Behavior Depending on Input Pressure and Parameter Settings
10.429 (ID 1025) Frequency Drop Delay
Location in the menu:
P2.9.21
(Pump and Fan Control Application)
Use this parameter to set the delay time after which the frequency is decreased after the auxiliary drive is started.
See
10.430 (ID 1026) Frequency Increase Delay
10.430 (ID 1026) Frequency Increase Delay
Location in the menu:
P2.9.22
(Pump and Fan Control Application)
Use this parameter to set the delay time after which the frequency is increased after the auxiliary drive is stopped.
If the speed of auxiliary drive increases slowly (for example, in soft starter control), a delay between the start of auxiliary drive and
the frequency drop of the variable speed drive makes the control smoother. This delay can be adjusted with parameter
ID 1025
.
AB296635287482en-000301 / DPD00903
274 | Danfoss A/S © 2023.02
Parameter Descriptions
VACON® NX All-in-One
Application Guide
Summary of Contents for VACON NX
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