YASKAWA U1000 - Page 365

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Minor Faults and Alarms
Refer to Table 6.10 for an overview of possible alarm codes. Conditions such as overvoltages can trip faults and alarms. It is
important to distinguish between faults and alarms to determine the proper corrective actions.
When the drive detects an alarm, the ALM indicator LED blinks and the alarm code display flashes. Most alarms trigger a
digital output programmed for alarm output (H2-oo = 10). A fault (not an alarm) is present if the ALM LED lights without
blinking. Refer to Faults on page 363 for information on fault codes.
Table 6.10 Minor Fault and Alarm Displays
Digital Operator
Display
Name
Minor Fault
Output
(H2-oo =
10)
Page
AEr
Station Address Setting Error
(CC-Link, CANopen,
MECHATROLINK)
YES 384
AUv Power Supply Undervoltage YES 367
bb Baseblock
No output
<2>
384
bUS
Option Card Communications
Error
YES 384
CALL
Serial Communication
Transmission Error
YES 385
CE
MEMOBUS/Modbus
Communication Error
YES 385
CrST Cannot Reset YES 385
CyC
MECHATROLINK Comm.
Cycle Setting Error
YES 385
dEv
Excessive Speed Deviation
(for Control Mode with PG)
YES 386
dnE Drive Disabled YES 386
doH Damping Resistor Overheat YES 369
dWAL DriveWorksEZ Fault YES 370
E5
MECHATROLINK Watchdog
Timer Error
YES 370
EF
Forward/Reverse Run Command
Input Error
YES 386
EF0 Option Card External Fault YES 386
to EF1 to
EF8
External Fault
(input terminal S1 to S8)
YES 386
FAn Fan Fault YES 371
FbH Excessive PID Feedback YES 387
FbL PID Feedback Loss YES 387
Fdv Power Supply Frequency Fault YES 372
Hbb Safe Disable Signal Input YES 388
HbbF Safe Disable Signal Input YES 388
Digital Operator
Display
Name
Minor Fault
Output
(H2-oo =
10)
Page
HCA Current Alarm YES 388
LT-1 Cooling Fan Maintenance Time
No output
<1>
388
LT-2 Capacitor Maintenance Time
No output
<1>
388
LT-3
Soft Charge Bypass Relay
Maintenance Time
No output
<1>
389
oH Heatsink Overheat YES 389
oH2 Heatsink Overheat Warning YES 389
oH3 Motor Overheat YES 389
oL3 Overtorque 1 YES 389
oL4 Overtorque 2 YES 390
oL5
Mechanical Weakening
Detection 1
YES 390
oS Overspeed YES 390
ov Control Circuit Overvoltage YES 390
PASS
MEMOBUS/Modbus Test Mode
Complete
No output 390
PGo
PG Disconnect
(for Control Mode with PG)
YES 391
PGoH
PG Hardware Fault
(when using PG-X3)
YES 391
rUn Motor Switch during Run YES 391
SE
MEMOBUS/Modbus Test Mode
Fault
YES 391
SrC Phase Order Detection Fault YES 381
UL3 Undertorque Detection 1 YES 391
UL4 Undertorque Detection 2 YES 391
UL5
Mechanical Weakening
Detection 2
YES 382
Uv Control Circuit Undervoltge YES 392
<1>
Output when H2-oo = 2F.
<2>
Baseblock alarm “bb” will not activate a digital output programmed for minor fault H2-0o= 10. Set H2-0o = 8 or 1B to activate a digital otuput
for “bb”.
6.3 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
365
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Troubleshooting