Control Word Source; Control Word Timeout Time; Control Word Timeout Function - Danfoss VLT AutomationDrive FC 302 Programming Manual

Parameter Descriptions

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
3 3
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] None
[1] FC RS485
[2] FC USB
[3] Option A
[4] Option B
[5] Option C0
[6] Option C1
[30] External Can

8-03 Control Word Timeout Time

Range:
1 s [ 0.1 -
*
18000 s]

8-04 Control Word Timeout Function

Select the timeout function. The timeout function activates when
the control word fails to be updated within the time period
specified in parameter 8-03 Control Word Timeout Time.
Option:
154
VLT
Function:
NOTICE
This parameter cannot be adjusted
while the motor is running.
Function:
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.
Function:
NOTICE
To change the set-up after a timeout,
configure as follows:
1. Set parameter 0-10 Active Set-up
to [9] Multi set-up.
2. Select the relevant link in
parameter 0-12 This Set-up
Linked to.
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®
AutomationDrive FC 301/302
8-04 Control Word Timeout Function
Select the timeout function. The timeout function activates when
the control word fails to be updated within the time period
specified in parameter 8-03 Control Word Timeout Time.
Option:
[0] Off
[1] Freeze
output
[2] Stop
[3] Jogging
[4] Max. speed Runs the motor at maximum frequency until
[5] Stop and
trip
[6] Qstop and
trip
[7] Select
setup 1
[8] Select
setup 2
[9] Select
setup 3
[10] Select
setup 4
[26] Trip
Function:
Resumes control via fieldbus (fieldbus or
standard), using the most recent control word.
Freezes output frequency until communication
resumes.
Stops with auto restart when communication
resumes.
Runs the motor at jog frequency until
communication resumes.
communication resumes.
Stops the motor, then resets the frequency
converter to restart:
•
Via the fieldbus.
•
Via [Reset].
•
Via a digital input.
NOTICE
This option is available only with
software version 48.XX.
Stops the motor with the quick stop ramp
(parameter 3-81 Quick Stop Ramp Time). Perform
a reset to restart the frequency converter.
Changes the set-up after a control word
timeout. If communication resumes after a
timeout, parameter 8-05 End-of-Timeout
Function either resumes the set-up used before
the timeout, or retains the set-up endorsed by
the timeout function.
See [7] Select set-up 1.
See [7] Select set-up 1.
See [7] Select set-up 1.
MG33MP02