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6.3 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC
SIEP C710636 02B YASKAWA U1000 Technical Manual
351
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6
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Minor Faults and Alarms
give an overview of possible alarm codes. As conditions such as overvoltage can trip both a fault and alarm, it
is important to distinguish between faults and alarms in order to find the right corrective action.
If an alarm is detected, the ALM LED will blink and the alarm code display flashes. The majority of alarms will trigger a
digital output programmed for alarm output (H2-
= 10). If the ALM LED lights without blinking, this means that a
fault has been detected (not an alarm). Information on fault codes can be found in
Table 6.11 Minor Fault and Alarm Displays
Digital Operator Display
Name
Minor Fault Output
(H2-
= 10)
Page
LED Operator
LCD Operator
AEr
Station Address Setting Error (CC-Link, CANopen, MECHATROLINK)
YES
AUv
Power Supply Undervoltage
YES
bb
Baseblock
No output
bUS
Option Communication Error
YES
CALL
Serial Communication Transmission Error
YES
CE
MEMOBUS/Modbus Communication Error
YES
CrST
Cannot Reset
YES
CyC
MECHATROLINK Comm. Cycle Setting Error
YES
dEv
Speed Deviation (when using a PG option card and PM Open Loop Vector Control
Mode without PG)
YES
dnE
Drive Disabled
YES
doH
Damping Resistor Overheat
YES
dWAL
DriveWorksEZ Fault
YES
E5
MECHATROLINK Watchdog Timer Error
YES
EF
Forward/Reverse Run Command Input Error
YES
EF0
Option Card External Fault
YES
to
EF1 to EF8
External Fault (input terminal S1 to S8)
YES
FAn
Fan Fault
YES
FbH
Excessive PID Feedback
YES
FbL
PID Feedback Loss
YES
Fdv
Power Supply Frequency Fault
YES
Hbb
Safe Disable Signal Input
YES
HbbF
Safe Disable Signal Input
YES
HCA
Current Alarm
YES
LT-1
Cooling Fan Maintenance Time
No output
LT-2
Capacitor Maintenance Time
No output
LT-3
Soft Charge Bypass Relay Maintenance Time
No output
oH
Heatsink Overheat
YES
oH2
Heatsink Overheat Warning
YES
oH3
Motor Overheat
YES
oL3
Overtorque 1
YES
oL4
Overtorque 2
YES
oL5
Mechanical Weakening Detection 1
YES
SIEP_C710636_02B_1_0.book 351 ページ 2015年11月25日 水曜日 午後4時56分