YASKAWA U1000 Series - Page 351

6.3 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual 351
Troubleshooting
6
■ Minor Faults and Alarms
Tabl e 6 .11 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 Faults on page 349.
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 366
AUv Power Supply Undervoltage
YES 354
bb Baseblock No output 366
bUS Option Communication Error YES 366
CALL Serial Communication Transmission Error YES 366
CE MEMOBUS/Modbus Communication Error YES 367
CrST Cannot Reset YES 367
CyC MECHATROLINK Comm. Cycle Setting Error YES 367
dEv
Speed Deviation (when using a PG option card and PM Open Loop Vector Control
Mode without PG)
YES 367
dnE Drive Disabled YES 367
doH Damping Resistor Overheat
YES 367
dWAL DriveWorksEZ Fault YES 356
E5 MECHATROLINK Watchdog Timer Error YES 356
EF Forward/Reverse Run Command Input Error YES 368
EF0 Option Card External Fault YES 368
to
EF1 to EF8 External Fault (input terminal S1 to S8) YES 368
FAn Fan Fault YES 357
FbH Excessive PID Feedback YES 368
FbL PID Feedback Loss YES 368
Fdv Power Supply Frequency Fault
YES 369
Hbb Safe Disable Signal Input YES 369
HbbF Safe Disable Signal Input YES 369
HCA Current Alarm YES 369
LT-1 Cooling Fan Maintenance Time No output
<1> 369
LT-2 Capacitor Maintenance Time No output
<1> 369
LT-3 Soft Charge Bypass Relay Maintenance Time No output
<1> 370
oH Heatsink Overheat YES 370
oH2 Heatsink Overheat Warning YES 370
oH3 Motor Overheat YES 370
oL3 Overtorque 1 YES 370
oL4 Overtorque 2 YES 370
oL5 Mechanical Weakening Detection 1 YES 370
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