Danfoss VACON NX, Application Manual

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10.406 (ID 1002) Start Frequency, Auxiliary Drive 1
Location in the menu:
P2.9.2
(Pump and Fan Control Application)
Use this parameter to set the limit for the frequency of the AC drive that starts the auxiliary drive.
The frequency of the drive controlled by the AC drive must exceed the limit defined with these parameters with 1 Hz before the
auxiliary drive is started. The 1 Hz overdraft makes a hysteresis to avoid unnecessary starts and stops.
Flow Flow
f
out
f
out
Start delay of the
aux.drives
(par. ID1010)
Frequency
increase
during the
start delay
Stop freq. of aux. drive 1
(par. ID1003 - 1 Hz)
Frequency after starting
the aux. drive1
is par. 1 Hz
F
min
par. ID101
Start freq. of aux. drive 1
par. 1 Hz) Start freq. of aux. drive 1
par. 1 Hz)
Frequency after
starting the
aux. drive1 is
par. ID1003-1 Hz
F
min
par. ID101
Frequency decrease
during the stop delay
Stop delay of the aux.
drives (par. ID1011)
Stop freq.
of aux. drive 1
(par. ID1003-1 Hz)
e
3
0
b
h
0
6
9
.1
0
Illustration 82: Example of Parameter Setting; Variable Speed Drive and One Auxiliary Drive
10.407 (ID 1003) Stop Frequency, Auxiliary Drive 1
Location in the menu: P2.9.3 (Pump and Fan Control Application)
Use this parameter to set the limit for the frequency of the AC drive that stops the auxiliary drive.
The frequency of the drive controlled by the AC drive must fall with 1 Hz below the limit defined with these parameters before the
auxiliary drive is stopped. The stop frequency limit also defines the frequency to which the frequency of the drive controlled by the
AC drive is dropped after starting the auxiliary drive. See
Illustration 82 .
10.408 (ID 1004) Start Frequency, Auxiliary Drive 2
Location in the menu: P2.9.4 (Pump and Fan Control Application)
Use this parameter to set the limit for the frequency of the AC drive that starts the auxiliary drive. See parameter ID 1002 .
10.409 (ID 1005) Stop Frequency, Auxiliary Drive 2
Location in the menu: P2.9.5 (Pump and Fan Control Application)
Use this parameter to set the limit for the frequency of the AC drive that stops the auxiliary drive. See parameter ID 1003 .
10.410 (ID 1006) Start Frequency, Auxiliary Drive 3
Location in the menu: P2.9.6 (Pump and Fan Control Application)
Use this parameter to set the limit for the frequency of the AC drive that starts the auxiliary drive. See parameter ID 1002 .
10.411 (ID 1007) Stop Frequency, Auxiliary Drive 3
Location in the menu:
P2.9.7
(Pump and Fan Control Application)
Use this parameter to set the limit for the frequency of the AC drive that stops the auxiliary drive. See parameter ID 1003 .
10.412 (ID 1008) Start Frequency, Auxiliary Drive 4
Location in the menu: P2.9.8 (Pump and Fan Control Application)
Use this parameter to set the limit for the frequency of the AC drive that starts the auxiliary drive. See parameter ID 1002 .
10.413 (ID 1009) Stop Frequency, Auxiliary Drive 4
Location in the menu: P2.9.9 (Pump and Fan Control Application)
Use this parameter to set the limit for the frequency of the AC drive that stops the auxiliary drive. See parameter ID 1003 .
AB296635287482en-000301 / DPD00903 268 | Danfoss A/S © 2023.02
Parameter Descriptions
VACON® NX All-in-One
Application Guide