Parker 690+ series - SEQUENCING LOGIC STATES; Principle State Machine

Sequencing Logic 4-1
690+ Series Frequency Inverter
4SEQUENCING LOGIC STATES
Principle State Machine
The Inverter’s reaction to commands is defined by a state machine. This determines which
commands provide the demanded action, and in which sequence.
Main Sequencing States
The main sequencing state of the unit is indicated by an enumerated value given by the
parameter SEQUENCER STATE under SEQUENCING LOGIC menu at level 3.
Enumerated
Value
Main Seq State Standard Name Description
0 START DISABLED Switch On Disabled The Inverter will not accept a
switch on command
1 START ENABLED Ready To Switch On The Inverter will accept a switch
on command
2 SWITCHED ON Switched On The Inverter’s stack is enabled
3 READY Ready Waiting for Contactor to be
closed
4 ENABLED Enabled The Inverter is enabled and
operational
5 F-STOP ACTIVE Fast-Stop Active Fast stop is active
6 TRIP ACTIVE Trip Active The Inverter is processing a trip
event
7 TRIPPED Tripped The Inverter is tripped awaiting
trip reset
Table 4-1 Enumerated Values for the SEQUENCING LOGIC Function Block
State Outputs of the SEQUENCING LOGIC Function Block
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 4-2 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