Digital Operator
Display
Name Page
oS
Overspeed
(for Control Mode with PG)
311
ov Overvoltage 311
PF Input Phase Loss 312
PGo
PG Disconnect
(for Control Mode with PG)
312
PGoH
PG Hardware Fault
(when using PG-X3)
312
rF Braking Resistor Fault 313
rH Dynamic Braking Resistor 313
rr Dynamic Braking Transistor 313
SEr Too Many Speed Search Restarts 313
Digital Operator
Display
Name Page
STo Pull-Out Detection 313
SvE Zero-Servo Fault 314
UL3 Undertorque Detection 1 314
UL4 Undertorque Detection 2 314
UL5 Mechanical Weakening Detection 2 314
Uv1 Undervoltage 314
Uv2 Control Power Supply Undervoltage 315
Uv3 Soft Charge Circuit Fault 315
voF Output Voltage Detection Fault 315
<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>
Displayed as when occurring at drive power up. When one of the faults occurs after successfully starting the drive, the display will show
.
n
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 296 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
SI-T Station Number Setting
Error (CC-Link, CANopen,
MECHATROLINK-II)
YES 316
bb Drive Baseblock No output 316
boL
Braking Transistor Overload
Fault
YES 316
bUS
Option Card Communications
Error
YES 316
CALL
Serial Communication
Transmission Error
YES 316
CE
MEMOBUS/Modbus
Communication Error
YES 317
CrST Cannot Reset YES 317
dEv
Excessive Speed Deviation
(for Control Mode with PG)
YES 317
dnE Drive Disabled YES 317
dWAL DriveWorksEZ Alarm YES 303
E5 SI-T3 Watchdog Timer Error YES 303
EF Run Command Input Error YES 318
EF0 Option Card External Fault YES 318
to EF1 to
EF8
External Fault
(input terminal S1 to S8)
YES 318
FbH Excessive PID Feedback YES 318
FbL PID Feedback Loss YES 319
Hbb
Safe Disable Signal Input
<2>
YES 319
HbbF
Safe Disable Signal Input
<2>
YES 319
Digital Operator
Display
Name
Minor Fault
Output
(H2-oo =
10)
Page
HCA Current Alarm YES 319
LT-1 Cooling Fan Maintenance Time
No output
<1>
319
LT-2 Capacitor Maintenance Time
No output
<1>
320
LT-3
Soft Charge Bypass Relay
Maintenance Time
No output
<1>
320
LT-4 IGBT Maintenance Time (50%)
No output
<1>
320
oH Heatsink Overheat YES 320
oH2 Drive Overheat YES 320
oH3 Motor Overheat YES 320
oL3 Overtorque 1 YES 321
oL4 Overtorque 2 YES 321
oL5
Mechanical Weakening
Detection 1
YES 321
oS
Overspeed
(for Control Mode with PG)
YES 321
ov Overvoltage YES 321
PASS
MEMOBUS/Modbus Test Mode
Complete
No output 322
PGo
PG Disconnect
(for Control Mode with PG)
YES 322
PGoH
PG Hardware Fault
(when using PG-X3)
YES 322
6.3 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
297
6
Troubleshooting