Chapter 4: AC Drive Parameters
Page 4–163
DURApulse GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
Type Hex Addr Dec Addr
P6.71 STO Alarm Latch
♦R/W 0647 41608
Range/Units (Format: 16-bit binary) Default
0: STO Alarm Latch
1: STO Alarm no Latch
0
Setting Explanations:
0: STO Alarm Latch: After the reason for an STO Alarm is cleared, a Reset command is needed to
clear the STO Alarm unless Fire Mode is turned ON. Once the STO Alarm is cleared, Fire Mode
can run the drive without first having received a reset signal. Fire Mode will also run the drive
after an STL1 or STL2 alarm is cleared without needing a power cycle.
1: STO Alarm no Latch: After the reason for an STO Alarm is cleared, the STO Alarm will be cleared
automatically. Cycling the run command OFF then ON is required, even if P6.29=1 (Line Start
Lockout disabled).
All of the STL1~STL3 errors are “Alarm Latch” mode. (In STL1~STL3 mode, the P6.71 function is not
effective.)
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