Delta VFD2A8MS21ANSAA User Manual

Chapter 14 Fault CodesMS300
600
ID
Display on LCD Keypad
Fault Name
Fault Descriptions
77
S2 internal loop
detection error
(STL2)
S2–DCM internal loop detection error
Action and Reset
Action Condition
Hardware detection
Action Time
Immediately act
Fault Treatment Parameter
N/A
Reset Method
Hardware failure, and cannot reset. Cycle the power.
Reset Condition
N/A
Record
Yes
Cause
Corrective Actions
S2 and DCM short circuit lines are
not connected
Re-connect the short circuit lines
Hardware failure
After you make sure all the wiring is correct, if STL2 fault still exists after cycling
the power, return to the factory for repair.

Delta VFD2A8MS21ANSAA Specifications

General

Brand	Delta
Model	VFD2A8MS21ANSAA
Category	DC Drives
Language	English