7-57 Process PID Fb. Filter Time
Range:
Function:
0.001 s
*
[0.001 - 1 s]
Set a time constant for the
feedback first-order low-pass filter.
The low-pass filter improves steady-
state performance and dampens
oscillations on the reference/
feedback signals. However, severe
filtering can be detrimental to
dynamic performance.
7-60 Feedback 1 Conversion
Select a conversion for the feedback 1 signal. Select
[0] Linear
to
leave the feedback signal unchanged.
Option:
Function:
[0]
*
Linear
[1]
Square root
7-62 Feedback 2 Conversion
Select a conversion for the feedback 2 signal. Select
[0] Linear
to
leave the feedback signal unchanged.
Option:
Function:
[0]
*
Linear
[1]
Square root
4.9 Parameters: 8-** Communications and
Options
4.9.1 8-0* General Settings
8-01 Control Site
The setting in this parameter overrides the settings in
parameter 8-50 Coasting Select
to
parameter 8-56 Preset Reference
.
Option:
Function:
[0]
Digital and
ctrl.word
Use both digital input and control
word.
[1]
Digital only
Use digital inputs only.
[2]
Controlword
only
Use control word only.
8-02 Control Word Source
Select the source of the control word: 1 of 2 serial interfaces or 4
installed options. During initial power-up, the frequency
converter automatically sets this parameter to
[3] Option A
if it
detects a valid fieldbus option installed in slot A. When the
option is removed, the frequency converter detects a configu-
ration change, sets
parameter 8-02 Control Word Source
to default
setting
[1] FC RS485
, and trips. If an option is installed after initial
power-up, the setting of
parameter 8-02 Control Word Source
does
not change, but the frequency converter trips and shows:
Alarm
67, Option Changed
.
When retrofitting a bus option into a frequency converter that
did not have a bus option installed earlier, change the control to
bus-based. This change is required for safety reasons to avoid an
unintended change.
Option:
Function:
NOTICE
This parameter cannot be
adjusted while the motor is
running.
[0]
None
[1]
FC RS485
[2]
FC USB
[3]
Option A
[30]
External Can
8-03 Control Word Timeout Time
Range:
Function:
1 s
*
[0.1 -
18000.0 s]
Enter the maximum time expected to pass
between the reception of 2 consecutive
telegrams. If this time is exceeded, it indicates
that the serial communication has stopped.
The function selected in
parameter 8-04 Control Word Timeout Function
is then carried out. A valid control word
triggers the timeout counter.
Parameter Descriptions
Programming Guide
MG06J202
Danfoss A/S © 03/2019 All rights reserved.
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Summary of Contents for VLT AutomationDrive FC 361
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