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7 Troubleshooting
7 Troubleshooting
Problems with the option interface may trigger an operator error.
Refer to the SF-520 Technical Manual for all other errors.
◆
Fault
LED Operator
Display
Fault Name
oPr
Digital operator connection fault
Cause
Possible solution
LED operator is
not properly
connected to the
drive or cables are
damaged
• Check the connection between the LED
operator and the drive
• Replace the cable if damaged
• Turn off the drive input power and
disconnect the LED operator
• Next reconnect the operator and turn the
drive input power back on
