Rockwell Automation 9VT201-007HTNNN, User Manual, Page: 125 / 224

Programming and Parameters 3-63
Publication 9VT-UM001D-EN-P
INPUTS
&
OUTPUT
S
Di
gi
ta
l In
put
s
Cont.
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OIM Control This input provides a mean to override the logic control source
selection and can be used to override control from any port,
including the All Ports selection.
An open-to-closed transition of this input sets the control source
to the local OIM. If no local OIM is present, the control source is
set to the remote OIM. If no OIM is present at all, the drive stops.
When control is set to the OIM, the OIM is granted Hand
(manual) reference (the Man Ref Preload (193) configuration is
enforced). Subsequent Auto/Hand commands will toggle the
OIM in and out of Hand (manual) mode. The drive’s active or
stopped state is not affected unless no OIM is present.
On a closed-to-open transition, manual control is released if
active, and the selected auto reference is used. The logic source
select override is removed. The edge/level-sense start
configuration is imposed (LevelSense Start).
PI Enable If this input function is closed, the operation of the Process PI
loop will be enabled.
If this input function is open, the operation of the Process PI loop
will be disabled.
PI Hold If this input function is closed, the integrator for the Process PI
loop will be held at the current value; that is, it will not increase.
If this input function is open, the integrator for the Process PI
loop will be allowed to increase.
PI Reset If this input function is closed, the integrator for the Process PI
loop will be reset to 0.
If this input function is open, the integrator for the Process PI
loop will integrate normally.
Pwr Loss Lvl When the DC bus level in the drive falls below a certain level, a
“powerloss” condition is created in the drive logic. This input
allows the user to select between two different “power loss”
detection levels dynamically. If the physical input is closed, then
the drive will take its power loss level from a parameter. If the
physical input is open (de-energized), then the drive will use a
power loss level designated by internal drive memory, typically
82% of nominal. If the input function is not configured, then the
drive always uses the internal power loss level.
Precharge En This input function is used to manage disconnection from a
common DC bus.
If the physical input is closed, this indicates that the drive is
connected to common DC bus and normal precharge handling
can occur, and that the drive can run (start permissive). If the
physical input is open, this indicates that the drive is
disconnected from the common DC bus, and thus the drive
should enter the precharge state (precharge relay open) and
initiate a coast stop immediately in order to prepare for
reconnection to the bus.
If this input function is not configured, then the drive assumes
that it is always connected to the DC bus, and no special
precharge handling will be done.
F
ile
Gr
oup
No
.
Parameter Name and Description
See page 3-2 for symbol descriptions
Values
Re
lated