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F108
UP/DOWN Frequency Disposition at Power Down
Program Frequency UP/DOWN Frequency Settings
When the Frequency Mode 1 (F004) setting is set to UP/DOWN Frequency,
this parameter determines the outcome of the Frequency Mode 1 setting when
the ASD is powered down, stopped, or tripped.
Settings:
0 — Erase
1 — Store
Note:
If Store is selected, an input terminal must be set to 43:
Data Write
in order to save the UP/DOWN Frequency
Command.
If Erase is selected, then a set of 0.0 Hz is established when restarted and the
ASD will NOT store the frequency setpoint.
If Store is selected, the ASD will retain the current frequency setpoint in
memory while stopped, during fault conditions, or when power is removed.
This setpoint will be used as the initial frequency setpoint when the ASD is
restarted.
An activated discrete input terminal configured as UP/DOWN Frequency
(clear) will establish a frequency setpoint of 0.0 Hz regardless of the UP/
DOWN Frequency Disposition at Power Down setting upon restart.
If running with an activated UP/DOWN Frequency (up or down) terminal,
activation of the UP/DOWN Frequency (clear) terminal forces the ASD
output to the Lower-Limit Frequency (F013) setting.
UP/DOWN Frequency Function
The UP/DOWN Frequency function allows for an externally-supplied discrete
input signal to increase or decrease the output frequency of the ASD.
This method uses the discrete input terminal settings UP/DOWN Frequency
(up), UP/DOWN Frequency (down), and UP/DOWN Frequency (clear).
Activation of the Up or Down terminals increases or decreases the output
frequency for the duration of the activation at the Acceleration 1 or
Deceleration 1 rates, respectively.
To activate-and-hold either terminal will continue the up or down function until
reaching the Upper-Limit Frequency or the Lower-Limit Frequency,
respectively, at which point further activation will be ignored. The UP/DOWN
Frequency (clear) function will clear the stored frequency value if stopped or
command the ASD to output the Lower-Limit Frequency if activated while
running.
Setup Requirements
F003
— Set the Command control source to Terminal Board.
F004
— Set the Frequency Mode 1 control source to UP/DOWN Frequency.
Set an unused discrete input terminal to UP/DOWN Frequency (up).
Set an unused discrete input terminal to UP/DOWN Frequency (down).
Set an unused discrete input terminal to UP/DOWN Frequency (clear).
F108
— Select the outcome (Erase or Store) of the Frequency Mode 1 setting
when the ASD is powered down, stopped, or tripped.
WX9 ASD Installation and Operation Manual
Direct Access Number — F108
Parameter Type — Selection List
Factory Default — Erase
Changeable During Run — No
UP/DOWN Frequency (up) Mode
Binary
UP/DOWN Frequency (down) Mode
F108
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