Delta VP3000 Series - Page 490

Chapter 8 Troubleshooting｜VP3000
481
ID No.
Warning Name
Descriptions
159
Safe torque off 1
(STO1)
The action time difference between Channel 1 and Channel 2 are too large and
Channel 1 activates.
Action and Reset
Action Condition
There is action time difference between two channels
Action Time
Pr. H0-12
Warning Setting Parameter
Pr. H0-11
0: STO Fault
1: Fault at Run; Warning at Stop
2: STO Warning
3: No STO Display at Stop
Reset Method
It is “Warning”, which will be automatically reset
Reset Condition
Channel 1 and Channel 2 return to no action level
Record
No
Cause
Corrective Actions
Channel external appliance
problems
1. Check whether Channel 1 and Channel 2 use appliance as input, and
whether there is time difference in the appliance action time; replace the
appliance with the same action time.
2. Check whether the appliance is broken.