Danfoss FCM305 56 Instruction Manual page 78

The possibility of choosing a unit in parameter 416
will depend on the choices made in the following
parameters:
Par. 002 Local/remote control.
Par. 013 Local control/config. as par. 100.
Par. 100 Configuration.
Select parameter 002 as Remote control
If parameter 100 is selected as Speed regulation,
open loop, the unit selected in parameter 416 can be
used in displays (par. 009-12 Feedback [unit]) of
process parameters.
Note: The reference can only be shown in Hz
(Speed regulation, open loop).
If parameter 100 is selected as Process regulation,
closed loop, the unit selected in parameter 416 will
be used when displaying both reference (par. 009-
12: Reference [unit]) and feedback (par. 009-12:
Feedback [unit]).
Select parameter 002 as Local control
If parameter 013 is chosen as LCP control and open
loop or LCP digital control and open loop, the
reference will be given in Hz, regardless of the
choice made in parameter 416. If parameter 013 is
chosen as LCP control/as par. 100 or LCP digital
control/as par. 100, the unit will be as described
above under parameter 002, Remote-control.
NOTE!
The above applies to display of Reference [unit] and
Feedback [unit]. If Reference [%] or Feedback [%] is
selected, the value displayed will be in the form of a
percentage of the selected range.
Description of choice:
Select the desired unit for the reference/feedback
signal.
438 Process PID anti windup
(PROC ANTI WINDUP)
Settings:
Disable (DISABLE)
Enable (ENABLE)
= General factory setting - also applying to spare part unit, H H H H H = HVAC setting, I I I I I = Industrial setting, ( ) = parameter
window text. [ ] = value for use in communication via serial communication port
12-4
FCM 300 Series
Function:
It is possible to select whether the process regulator
is to continue regulating on an error even if it is not
possible to increase/reduce the output frequency.
Used together with Process, closed loop mode
(parameter 100).
Description of choice:
The factory setting is Enable [1], which means that
the integration link is adjusted in relation to the
actual output frequency if either the current limit or
the max./min. frequency has been reached. The
process regulator will not engage again until either
the error is zero or its sign has changed.
Select Disable [0] if the integrator is to continue
integrating on an error, even if it is not possible to
remove the fault by such regulation.
NOTE!
If Disable [0] is selected, it will mean that when the
error changes its sign, 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.
439 Process PID start frequency
(PROC START VALUE)
Settings:
f -f (parameter 201 and 202)
MIN MAX
parameter 201
Function:
When the start signal comes, the FCM 300 will
react in the form of Speed, open loop mode
following the ramp. Only when the programmed
start frequency has been obtained, will it change
over to Process, closed loop mode. In addition, it is
possible to set a frequency that corresponds to the
speed that the process normally rung which will
enable the required process conditions to be
[0]
reached sooner.
[1]
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