Rottler SG7, Operation And Maintenance Manual, Page: 62 / 102

Section 7 Troubleshooting SG7 Manual
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7-3
Problem Possible Cause Solution
Eccentricity Problems when
Cutting Three Angle Seats
Worn or improperly selected pilot Check pilot for wear and straightness
Dull or damaged cutter insert Replace insert
Incorrect pilot selection Follow directions in manual for
selecting pilots
Worn tool holder Check tool holder with bore gauge to
determine if there wear
Worn valve guide Service valve guides before attempting
to cut valve seats
SG Fault and Error Codes
Errors are sensed by the SG controller. The left display shows Err.
Faults are sensed by the motor driver. The left display shows FLt.
Alarms are sensed by the motor driver. The left display shows ALr.
To clear an error requires the condition be resolved (correct wiring...) and cycle the e-stop.
To clear fault requires the condition be resolved (correct wiring...), press the reset key on the drive front
panel, and cycle the e-stop. If e-stop is cycled long enough the drive will power down and that will clear
the fault too.
Alarms clear as the condition that caused them disappears (the over torque is relieved...).
Error Display Description
C bUS Communications lost with drive
Fault Display Description
Uv1 Undervoltage
Uv2 Control Power Supply Undervoltage
Uv3 Soft Charge Circuit Fault
GF Ground Fault
oC Overcurrent
ov Overvoltage
oH Heatsink Overheat
oH1 Heatsink Overheat
oH3 Motor Overheat (PTC input)
oH4 Motor Overheat (PTC input)
rH Braking Resistor Overheat
oL1 Motor Overload
oL2 Drive Overload
oL3 Overtorque Detection 1