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<1> Displayed as
when occurring at drive power up. When one of the faults occurs after successfully starting the drive, the display will show
.
<2> Available in drive software versions PRG: 1020 and later.
<3> Uv1 and Uv2 faults are not saved to the fault history
n
Minor Faults and Alarms
When a minor fault or alarm occurs, the ALM LED flashes and the text display shows an alarm code. A fault has occurred if
the text remains lit and does not flash.
Refer to Alarm Detection on page 282
. An overvoltage situation, for example, can
trigger both faults and minor faults. It is therefore important to note whether the LEDs remain lit or if the LEDs flash.
Table 6.6 Minor Fault and Alarm Displays
Digital Operator Display
Name
Minor Fault Output
(H2-
oo
= 10)
Pg.
AEr
Station Address Setting Error (CC-Link, CANopen,
MECHATROLINK)
YES
bb
Drive Baseblock
No output
bUS
Option Card Communications Error
YES
CALL
Serial Communication Transmission Error
YES
CE
MEMOBUS/Modbus Communication Error
YES
CrST
Can Not Reset
YES
CyC
MECHATROLINK Comm. Cycle Setting Error
YES
dEv
Excessive Speed Deviation (for Simple V/f with PG)
YES
dnE
Drive Disabled
YES
dWAL
DriveWorksEZ Alarm
YES
E5
MECHATROLINK Watchdog Timer Error
YES
EF
Run Command Input Error
YES
EF0
Option Card External Fault
YES
to
EF1 to EF7 External Fault (input terminal S1 to S7)
YES
FbH
Excessive PID Feedback
YES
FbL
PID Feedback Loss
YES
Hbb
Safe Disable Signal Input
YES
HbbF
Safe Disable Signal Input
YES
HCA
Current Alarm
YES
LT-1
Cooling Fan Maintenance Alarm
No output
<1>
LT-2
Capacitor Maintenance Alarm
No output
<1>
LT-3
Soft Charge Bypass Relay Maintenance Time
No output
<1>
LT-4
IGBT Maintenance Time (50%)
No output
<1>
oH
Heatsink Overheat
YES
oH2
Drive Overheat
YES
oH3
Motor Overheat
YES
oL3
Overtorque 1
YES
oL4
Overtorque 2
YES
oL5
Mechanical Weakening Detection 1
YES
oS
Overspeed (for Simple V/f with PG)
YES
ov
Overvoltage
YES
PASS
MEMOBUS/Modbus Test Mode Complete
No output
PGo
PG Disconnect (for Simple V/f with PG)
YES
rUn
During Run 2, Motor Switch Command Input
YES
6.3 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
265
6
Troubleshooting