Rockwell Automation 20A PowerFlex 70EC/700VC User Manual
Page 33
Digital Inputs
29
The drive will not jog while the drive is running or while the “Stop-Clear
Faults” input is open. Start has precedence
.
Important: Direction control is an “Exclusive Ownership” function (see
Owners). This means that only one control device (terminal block,
DPI device, HIM, etc.) at a time is allowed to control direction at a
time. The terminal block must become direction “owner” before it
can be used to control direction. If another device is currently the
direction owner (as indicated by [Direction Owner]), it will not be
possible to jog the drive or change direction by using the
terminal block digital inputs programmed for both Run and
Direction control (e.g. Run/Fwd).
If another device is not currently the direction owner (as indicated by [Direction
Owner]) and the terminal block bit is set in the [Direction Mask] and [Logic
Mask] parameters, the terminal block becomes direction owner as soon as one
(or both) of the “Jog Forward” or “Jog Reverse” input functions is closed.
•
Jog 1, Jog 2
These settings are similar to “Jog Forward” and “Jog Reverse” with the only
difference being that direction is determined by another input or another
device’s command (HIM or comm adapter). In addition, these settings will use
either [Jog Speed 1] or [Jog Speed 2], respectively. In unipolar mode, the
absolute value will be used along with a separate direction command. In bipolar
mode, the polarity of [Jog Speed 1] or [Jog Speed 2] will determine the direction
of jog.
•
Speed Select 1, 2, and 3
Up to three digital inputs can be used to select the speed reference. The open/
closed state of all speed select input functions combine to select which source is
the speed reference. Refer to "Speed Reference" on
.
•
Auto/Manual
Refer to "Auto/Manual" on
. The Auto/Manual setting for a digital input
works in conjunction with the overall Auto/Manual function. When this input is
closed, it overrides other speed references, but only if another device (HIM) did
not have ownership of the Manual state. If the digital input is successful in
gaining manual control, the speed reference comes from [TB Man Ref Sel],
which can be set to any of the analog inputs.
•
Accel 2, Decel 2
These digital input functions toggle between primary and secondary ramp rates.
For example, with a digital input programmed for Accel 2, an open digital input
follows [Accel Time 1]. A closed digital input follows [Accel Time 2].
•
Acc2 & Dec2
This setting is similar to the Accel 2 and Decel 2 settings, except that one digital
input will toggle both Accel and Decel at the same time.
!
ATTENTION: If a normal drive start command is received while the
drive is jogging, the drive will switch from jog mode to run mode. The
drive will not stop, but may change speed and/or change direction.