
19
“e” Encoder State
This fault is indicated by the display showing what appears to be a lower case “e”. It
indicates a fault involving the Encoder feedback.
Potential causes for the “e” Encoder State fault
• Any Encoder Output and its Compliment in same state
• Poor Shielding (Use “E” Fault Flow Chart)
• Custom Cable
“e” “Encoder State Fault”
"e"
Encoder State Fault
Check PowerTools Pro
Advanced Tab
Enabled
Yes
No
Recycle
Power
Returns to
Normal Operation
End
Invalid
Encoder State
Reporting
Check +5 VDC
J7 pin 7 to pin 17 (Gnd) EN
J6 pin 7 to pin 17 (Gnd) Epsilon
Should be 4.9 to 5.15 vdc
No
End
Yes
Replace
Cable
End
Return Drive
to Factory
Check Continuity
Encoder Phases
Motor to Drive Cable
Power Off
Cable
OK?
No
End
Contact
Tech Support
Yes
Use Emerson CT Feedback Cable
or
Cable with A, B, and Z shielded
Noise Check Cable
Routing
Contact
Tech Support
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