Delta VP3000 Series - Page 114

Chapter 3 Electrical Wiring｜VP3000
105
2. Pr.H0-14 STO Auto Reset = 1 Enable, auto-reset is valid)
The STO function is triggered after the drive runs, STO1 changes from ON (conducting) to OFF
(non-conducting), the drive stops output immediately, and starts counting after the filter time, and
then the STO2 is OFF. When the counting time of two circuits of STO are less than then
allowable difference time of STO1 / STO2 (Pr.H0-12), and the STO indication delay time (Pr.H0-
13) is reached, the drive displays STO fault message.
Since the STO fault message is invalid under the manual RESET command when the two STO
channels are both OFF (non-conductive), the drive still cannot run after receiving the RUN
command.
Figure 3-50
STO1–SCM
(Through filter)
STO2–SCM
(Through filter)
STO1–SCM
STO2–SCM
Drive status
Filter Time
No error
Drive output
STO
error/warn
ON
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
Reset command
RUN
RUN command
RUN
STOP
H0-14 STO Auto resets = 1 (STO fault automatically resets)
H0-13 STO Indn Delay time
H0-12 STO1/2 Allowable Duration
H0-13 STO Indn Delay Time
H0-12 STO1/2 Allowable Duration