Parameters: 8-** Communications And Options - Danfoss VLT AutomationDrive FC 301 Programming Manual

Parameter Descriptions
7-97 Position PI Max Speed Above Master
Range: Function:
the actual master speed. Valid only
in synchronization mode.
7-98 Position PI Feed Forward Factor
Range: Function:
NOTICE
98 % [0 - 110 %]
*
This parameter is only
available with software version
48.XX.
Enter the amount by which the
speed reference calculated by the
profile generator is allowed to
bypass the position PI controller.
7-99 Position PI Minimum Ramp Time
Range: Function:
NOTICE
0.010 s [0.000 -
*
3600.000 s]
This parameter is only
available with software version
48.XX.
Enter the shortest ramp time for
the output of the Position PI
controller. Use this parameter to
limit acceleration when correcting
large position deviations, for
example when starting synchroni-
zation with a running master or
after recovering from an overload
situation during positioning.
3.9 Parameters: 8-** Communications and
Options
3.9.1 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
Select.
Option: Function:
[0] Digital and Use both digital input and control
*
ctrl.word word.
[1] Digital only Use digital inputs only.
[2] Controlword Use control word only.
only
M0013101
Programming Guide
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:
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[30]
[35]
[37]
8-03 Control Word Timeout Time
Range:
1 s
*
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Function:
NOTICE
This parameter cannot be
adjusted while the motor is
running.
None
FC RS485
FC USB
Option A
Option B
Option C0
Option C1
External Can
Option A Fast Not applicable for current release.
Option C0 Fast Same as option [5] Option C0. The
reference is transferred faster and
without jitter, which ensures more
stability and dynamic control. In
addition, all other references are
ignored which means that the drive
is controlled by the C-option
reference only.
Function:
[ 0.1 - 18000 Enter the maximum time expected
s] 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.
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