YASKAWA A1000 Series Quick Start Manual page 190

5.2 Fault Detection
Digital Operator Display
Cause
Parameter settings are not appropriate for the
load
Fault on the machine side (e.g., machine is
locked up)
Digital Operator Display
Cause
External operator is not properly connected to
the drive
190
Overtorque Detection 1
oL3
The current has exceeded the value set for Torque Detection Level 1 (L6-02) for longer than the allowable
time (L6-03).
Check L6-02 and L6-03 settings.
Check the status of the load. Remove the cause of the fault.
Overtorque Detection 2
oL4
The current has exceeded the value set for Torque Detection Level 2 (L6-05) for longer than the allowable
time (L6-06).
Mechanical Weakening Detection 1
oL5
Overtorque occurred, matching the conditions specified in L6-08.
High Slip Braking oL
oL7
The output frequency stayed constant for longer than the time set to n3-04 during High Slip Braking.
External Digital Operator Connection Fault
The external operator has been disconnected from the drive.
oPr
Note: An oPr fault will occur when all of the following conditions are true:
• Output is interrupted when the operator is disconnected (o2-06 = 1).
• The Run command is assigned to the operator (b1-02 = 0 and LOCAL has been selected).
• Check the connection between the operator and the drive.
• Replace the cable if damaged.
• Turn off the drive input power and disconnect the operator. Reconnect the operator and reapply drive
input power.
Overspeed
oS
The motor speed feedback exceeded the F1-08 setting.
Fault Name
Possible Solution
Fault Name
Possible Solution
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide