WX9 ASD Installation and Operation Manual
81
UP/DOWN Frequency Disposition at Power Down
Program
Frequency
UP/DOWN Frequency Settings
When the
Frequency Mode 1
(
) 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:
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
(
) 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
Command
control source to
Terminal Board
.
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)
.
— Select the outcome (Erase or Store) of the
Frequency Mode 1
setting
when the ASD is powered down, stopped, or tripped.
Direct Access Number — F108
Parameter Type —
Selection List
Factory Default —
Erase
Changeable During Run —
No
UP/DOWN Frequency (up) Mode
UP/DOWN Frequency (down) Mode
Содержание WX9 ASD
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