The Trip Condition; Logic Stopping - Parker AC890 Product Manual

Operating the Drive

The Trip Condition

When a trip condition is detected, a similar stopping method to NOT COAST STOP is used. The power
stack cannot be re-enabled until the trip condition has been cleared and successfully reset.
Refer to Chapter 9: "Trips and Fault Finding" for further details.

Logic Stopping

The drive can be stopped by setting the NOT STOP to FALSE for a short time, (>100 ms). The stop
sequence continues even if the NOT STOP signal goes inactive before the drive is stopped. Various
combinations of stop logic are shown below.
RUN FORWARD
RUN REVERSE
NOT STOP
REMOTE SETPOINT
REMOTE SETPOINT
Figure 3.9 Interaction between RUN FORWARD, RUN REVERSE and NOT STOP Parameters
6-13
Page
RUN FORWARD ignored
as already running
Speed 0%
RUN FORWARD not
ignored as now stopping
RUN FORWARD not
ignored as now stopping
SPEED DEMAND
890SD (Standalone) Drive: Frame G, H & J