Parameter 7-57 Process PID Fb. Filter Time
Table 408: Parameter 7-57 Process PID Fb. Filter Time
7-57 Process PID Fb. Filter Time
Default value: 0.001 s
Parameter type: Range, 0.001 - 1 s
Setup: All setups
Conversion index: -3
Data type: Uint16
Change during operation: True
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.
4.9 Parameter Group 8-** Communications and Options
4.9.1 8-0* General Settings
Parameter 8-01 Control Site
Table 409: Parameter 8-01 Control Site
8-01 Control Site
Default value: [0] Digital and ctrl. word
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
The setting in this parameter overrides the settings in
parameter 8-50 Coasting Select
to
parameter 8-56 Preset Reference Select
.
Option
Name
Description
[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.
Parameter 8-02 Control Word Source
Table 410: Parameter 8-02 Control Word Source
8-02 Control Word Source
Default value: Size related
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
N O T I C E
This parameter cannot be adjusted while the motor is running.
Select the source of the control word: 1 of 2 serial interfaces or 4 installed options. During initial power-up, the drive 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 drive
detects a configuration 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 drive trips and shows:
Alarm 67, Option Changed
. When retrofitting a bus option into a drive 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 Name
Description
[0]
None
[1]
FC RS485
[2]
FC USB
AU373327181955en-000101 / 130R1208 | 203
Danfoss A/S © 2021.08
Parameter Descriptions
VLT® AutomationDrive EZ FC 321
Programming Guide
