VLT
®
6000 HVAC
118
★ = factory setting. ( ) = display text [ ] = value for use in communication via serial communication port
MG.60.B1.02 - VLT is a registered Danfoss trade mark
421 PID anti windup
(PID ANTI WINDUP)
Value:
Off (DISABLE) [0]
★ On (ENABLE) [1]
Function:
It is possible to choose whether the process
regulator is to continue regulating on a deviation even
if it is not possible to increase/reduce the output
frequency.
Used in Closed loop [1] (parameter 100).
Description of choice:
The factory setting is On [1], which means that the
integration link is adjusted to the actual output
frequency if either the current limit, the voltage limit or
the max./min. frequency has been reached. The
process regulator will not be engaged again, until
either the deviation is zero or its prefix has changed.
Select Off [0] if the integrator is to continue
integrating to the deviation even if it is not possible to
remove the deviation by regulation.
NB!
If Off [0] is selected, it will mean that when the
deviation changes its prefix, the integrator will
first have to integrate down from the level obtained as
a result of the former error, before any change to the
output frequency occurs.
422 PID start-up frequency
(PID START VALUE)
Value:
f
MIN
-f
MAX
(parameter 201 and 202) ★ 0 Hz
Function:
When the start signal comes, the VLT frequency con-
verter will react in the form of Open loop [0] following
the ramp. Only when the programmed start frequency
has been obtained, will it change over to Closed loop
[1]. In addition, it is possible to set a frequency that
corresponds to the speed at which the process
normally runs, which will enable the required process
conditions to be reached sooner.
Used in Closed loop [1] (parameter 100).
419 Setpoint 2 (SETPOINT 2)
Value:
Ref
MIN
- Ref
MAX
★ 0.000
Function:
Setpoint 2 is used in closed loop as the reference to
compare the feedback values with. See description of
parameter 417 Feedbackfunction.
The setpoint can be offset with digital, analog or bus
signals, see reference handling.
Used in Closed loop [1] parameter 100 Configura-tion
and only if 2-zone minimum/maximum is selected in
parameter 417 Feedbackfunction.
Description of choice:
Set the required value. The process unit is selected in
parameter 415 Process units.
420 PID normal/inverse control
(PID NOR/INV. CTRL)
Value:
★ Normal (NORMAL) [0]
Inverse (INVERSE) [1]
Function:
It is possible to choose whether the process regulator
is to increase/reduce the output frequency if there is a
deviation between reference/setpoint and the actual
process state.
Used in Closed loop [1] (parameter 100).
Description of choice:
If the VLT frequency converter is to reduce the output
frequency in case the feedback signal increases,
select Normal [0].
If the VLT frequency converter is to increase the
output frequency in case the feedback signal
increases, select Inverse [1].
(124 paginas)
(1 paginas)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales