Troubleshooting
42
S811+ Soft Starter
MN03900001E—November 2012
Define the Problem
1.
If the S811+ Soft Starter fails to respond in any way to a start command., look at the
Digital Interface Module of the S811+ Soft Starter and determine the fault status of the
unit. The following troubleshooting flowcharts provide a logical sequence to determine
issues and suggest probable solutions to each problem.
Start Command Troubleshooting Flowchart
Troubleshooting—S811+ Does Not START
a. With the Status LED illuminated RED, the device
will not start. Attempt to reset the S811+ Soft
Starter by pressing the S811+’s RESET button for
one second. If the Status LED remains RED, use
the Digital Interface Module (DIM) to determine
the fault and fault code and go to the
Troubleshooting Fault Table in
Appendix I
to find
the corrective action for the fault.
b. If the Status LED is GREEN, the S811+ Soft Starter
is ready to start. Determine the Start source in
table above to aid in determining the appropriate
corrective action. Verify that the
Permissive
input
terminal is at 24 Vdc. Then start the S811+ the
Control Input terminal block. If the S811+ does
not start, verify that the
Start
input terminal is at
24 Vdc.
Start Source Attempted
Suggested Corrective Action
Digital Interface Module
Terminal Block
Verify that the Status LED is GREEN prior to the Start attempt.
Verify that the Status LED is not RED.
Verify that the 24 Vdc Permissive signal is at the proper voltage.
Verify that the 24 Vdc Start signal is at the proper voltage.
If the Start Control parameter is set to Edge, verify that the 24 Vdc Start signal is transitioned from 0 Vdc after a fault trip.
Network
Determine if the S811+ can be started locally from TB1 or the DIM.
Verify that the 24 Vdc Permissive signal is at the proper voltage.
Verify that the Status LED is GREEN.
Start
No
Check 24 Vdc
Power
Supply 24 Vdc
Power
Check
Protection
LEDs and
fault code
and attempt
to clear
Check 24V
Permissive
Check 24V
Start Signal
Are any
LEDs Lit?
24 Vdc
Supply
Present
Is the
Fault LED
Lit?
Is the
Ready
LED Lit?
No
No
End
Yes
Yes
Yes
Yes
Yes
