YASKAWA A1000 Series Technical Manual

6.3 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual 303
Troubleshooting
6
E5 SI-T3 Watchdog Timer Error YES 308
EF Run Command Input Error YES 320
EF0 Option Card External Fault YES 320
to
EF1 to EF8 External Fault (input terminal S1 to S8) YES 320
FbH Excessive PID Feedback YES 321
FbL PID Feedback Loss YES 321
Hbb Safe Disable Signal Input YES 321
HbbF Safe Disable Signal Input YES 321
HCA Current Alarm YES 321
LT-1 Cooling Fan Maintenance Time No output
<1> 321
LT-2 Capacitor Maintenance Time No output
<1> 322
LT-3 Soft Charge Bypass Relay Maintenance Time No output
<1> 322
LT-4 IGBT Maintenance Time (50%) No output
<1> 322
oH Heatsink Overheat YES 322
oH2 Drive Overheat YES 322
oH3 Motor Overheat YES 322
oL3 Overtorque 1 YES 322
oL4 Overtorque 2 YES 322
oL5 Mechanical Weakening Detection 1 YES 323
oS Overspeed (for Control Mode with PG) YES 323
ov Overvoltage YES 323
PASS MEMOBUS/Modbus Test Mode Complete No output 323
PGo PG Disconnect (for Control Mode with PG) YES 323
PGoH PG Hardware Fault (when using PG-X3) YES 323
rUn During Run 2, Motor Switch Command Input YES 323
SE MEMOBUS/Modbus Test Mode Fault YES 323
TrPC IGBT Maintenance Time (90%) YES 323
UL3 Undertorque 1 YES 324
UL4 Undertorque 2 YES 324
UL5 Mechanical Weakening Detection 2 YES 317
Uv Undervoltage YES 324
voF Output Voltage Detection Fault YES 324
<1> Output when H2- = 2F.
Digital Operator Display
Name
Minor Fault Output
(H2- = 10)
Page
LED Operator LCD Operator

YASKAWA A1000 Series Specifications

General

Series	A1000
Type	AC Drive
Altitude	Up to 1000m without derating
Output Frequency	0-400 Hz
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Communication Options	Modbus, DeviceNet, Profibus, Ethernet/IP
Ambient Temperature	-10 to 50°C
Storage Temperature	-20 to 60°C
Humidity	5% to 95% (non-condensing)
Enclosure Rating	IP20
Horsepower	0.5 to 1000 HP
Power Range	0.4 - 630 kW (varies by voltage and model)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Cooling Method	Fan Cooled
Safety	Safe Torque Off (STO)