NXS Form 63-2600, Users Manual, Technical Data - CONTROL ...

Honeywell Description of Parameters 191
Output frequency
Output frequency
Start delay of the aux.
drives (par. ID1010)
Start freq. of aux. drive 1 (par. ID1002 + 1 Hz)
Frequency after starting
the aux. drive1
is par. ID1003 - 1 Hz
Start freq. of aux. drive 1
(par. ID1002 + 1 Hz)
Frequency
increase
during the
start delay
Stop freq. of aux.
drive 1
(par. ID1003 - 1 Hz)
Fmin
par. ID101
Stop freq. of aux. drive 1
(par. ID1003 - 1 Hz)
Frequency after starting
the aux. drive1
is par. ID1003 + 1 Hz
Flow
Frequency
decrease during
Fmin the stop delay
par. ID101
NX12k89
Stop delay of the aux.
drives (par. ID1011)
Figure 8-54. Example of parameter setting; Variable speed drive and one auxiliary drive
Flow
1012 Reference step after start of auxiliary drive 1 7 (2.9.12)
1013 Reference step after start of auxiliary drive 2 7 (2.9.13)
1014 Reference step after start of auxiliary drive 3 7 (2.9.14)
1015 Reference step after start of auxiliary drive 4 7 (2.9.15)
The reference step will be automatically added to the reference value always when the
corresponding auxiliary drive is started. With the reference steps e.g. the pressure loss
in the piping caused by the increased flow can be compensated. See Figure 8-55.
Reference for PI-controller
Reference step 3
par. ID1014
Reference step 1
par. ID1012
Reference step 2
par. ID1013
Reference
(analogue
input)
Time
Aux. drive 1
Aux. drive 2
stop
start
stop
start
Aux. drive 3
stop
start
Figure 8-55. Reference steps after starting auxiliary drives
NX12k90
Automation and Control Solutions
Honeywell
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MIN 55422 Scarborough, Ontario 63-2600-1
MIV 4Z9
www.honeywell.com