HV580L Series Frequency Inverter
163
stop command.
Simple PLC can be either the frequency source or V/F separated voltage source.
When simple PLC is used as the frequency source, whether parameter values of PC-00 to PC-15 are positive
or negative determines the running direction. If the parameter values are negative, it indicates that the AC
drive runs in reverse direction.
Figure 6-32 Simple PLC when used as frequency source
PC-17
Simple PLC
retentive selection
Default
00
Setting range
Unit's
digit
Retentive upon power failure
0
No
1
Yes
Ten's
digit
Retentive upon stop
0
No
1
Yes
PLC retentive upon power failure indicates that the AC drive memorizes the PLC running moment and running
frequency before power failure and will continue to run from the memorized moment after it is powered on
again. If the unit's digit is set to 0, the AC drive restarts the PLC process after it is powered on again.
PLC retentive upon stop indicates that the AC drive records the PLC running moment and running frequency