Parker AC890PX Series, Product Manual

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B-3
Sequencing Logic
AC890PX AC Drive
SEQUENCING LOGIC Function Block - State Outputs
The following table shows the states of individual parameters for the SEQUENCING LOGIC function block required to
produce the condition of the MAIN SEQ STATE parameter.
START
DISABLED
START
ENABLED
SWITCHED
ON
READY ENABLED
F-STOP
ACTIVE
TRIP
ACTIVE
TRIPPED
Tripped FALSE FALSE FALSE FALSE FALSE FALSE TRUE TRUE
Running FALSE FALSE FALSE FALSE TRUE FALSE FALSE FALSE
Jogging FALSE FALSE FALSE FALSE Note 1 FALSE FALSE FALSE
Stopping FALSE FALSE FALSE FALSE Note 2 TRUE FALSE FALSE
Output
Contactor
Depends on
previous
state
Depends on
previous
state
TRUE TRUE TRUE TRUE TRUE FALSE
Switch On
Enable
FALSE TRUE TRUE TRUE TRUE TRUE TRUE FALSE
Switched On FALSE FALSE TRUE TRUE TRUE TRUE TRUE FALSE
Ready FALSE FALSE FALSE TRUE TRUE TRUE TRUE FALSE
Healthy TRUE TRUE TRUE TRUE TRUE TRUE FALSE
FALSE
Note 3
Table B-2 Parameter States for the MAIN SEQ STATE Parameter
NOTE
1. JOGGING is set TRUE once the jog cycle has started, and remains TRUE until the jog cycle has finished which is
when either the stop delay has finished or another mode is demanded.
2. STOPPING is set TRUE during the stopping cycles commanded by either RUNNING going low, JOGGING going
low or if Fast Stop is active, i.e. SEQUENCING LOGIC is F-STOP ACTIVE.
3. Once Run and Jog are both FALSE, HEALTHY O/P will be set TRUE.