Rockwell Automation 20B PowerFlex 70, PowerFlex 700 Reference Manual - Manual (Page 85)

Digital Inputs
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013 85
Table 11 Input function combinations that produce “DigIn CflctB” alarm
“Digin CflctC” indicates that more than one physical input has been configured
to the same input function, and this kind of multiple configuration isn’t allowed
for that function. Multiple configuration is allowed for some input functions and
not allowed for others.
The input functions for which multiple configuration is not allowed are:
There is one additional alarm that is related to digital inputs: the “Bipolar Cflct”
alarm occurs when there is a conflict between determining motor direction using
digital inputs on the terminal block and determining it by the polarity of an
analog speed reference signal.
Note that the drive will assert an alarm when the user sets up a illegal
configuration rather than refusing the first parameter value that results in such a
configuration. This is necessary because the user may have to change several
parameters one at a time in order to get to a new desired configuration, and some
of the intermediate configurations may actually be illegal. Using this scheme, the
user or a network device can send parameter updates in any order when setting up
the digital input configuration.
The “Bipolar Cflct” alarm occurs when there is a conflict between determining
motor direction using digital inputs on the terminal block and determining it by
some other means.
When [Direction Mode] is “Bipolar”, the drive uses the sign of the reference to
determine drive direction; when [Direction Mode] is “Reverse Dis”, then the
drive never permits the motor to run in the reverse direction. In both of these
cases, the terminal block inputs cannot be used to set direction, so this alarm is
asserted if any digital input function that can set motor direction is configured.
Start Stop–CF Run Run Fwd Run Rev Jog Jog Fwd Jog Rev
Fwd/
Rev
Start
Stop–CF
Run
Run Fwd
Run Rev
Jog
Jog Fwd
Jog Rev
Fwd / Rev
Forward/Reverse Run Forward Stop Mode B
Speed Select 1 Run Reverse Bus Regulation Mode B
Speed Select 2 Jog Forward Accel2 & Decel2
Speed Select 3 Jog Reverse Accel 2
Run Decel 2