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Minor Faults and Alarms
Refer to Table 6.5 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. A fault (not an alarm) is
present if the ALM LED lights without blinking. Refer to Faults on page 226 for information on fault codes.
Table 6.5 Minor Fault and Alarm Displays
HOA
Keypad
Display
Name Page
AL02 BAS Interlock Open 244
AL03 Smoke Purge in Bypass 244
AL04 Smoke Purge in Drive 244
AL13 Loss of Load 244
AL14 Serial Communications Fault 244
AL16
<2>
Input Phase Rotation 245
bAT HOA Keypad Battery Voltage Low 228
bb Drive Baseblock 245
bUS Option Card Communications Error 245
CE MEMOBUS/Modbus Communication Error 245
CrST Cannot Reset 246
EF Run Command Input Error 246
EF0 Option Card External Fault 246
FAn Internal Fan Fault 230
FbH Excessive PI Feedback 246
FbL PI Feedback Loss 247
Fn1 External Fan Fault 235
inTLK
<1>
Interlock Open 247
HOA
Keypad
Display
Name Page
LT-1 Cooling Fan Maintenance Time 247
LT-2 Capacitor Maintenance Time 247
LT-3 Soft Charge Bypass Relay Maintenance Time 247
oH Heatsink Overheat 248
oH2 Drive Overheat 248
oH3 Motor Overheat 248
oL3 Overtorque 1 248
ov Overvoltage 249
PASS MEMOBUS/Modbus Test Mode Complete 249
SAFE Customer Safety 249
SE MEMOBUS/Modbus Test Mode Fault 249
TdE Time Data Error 242
TIM Time Not Set 242
UL3 Undertorque 1 249
UL6 Undertorque 6 249
Uv Undervoltage 250
voF Output Voltage Detection Fault 250
WrUn Waiting for Run 250
<1> ALM LED will not blink.
<2> Available in bypass controller software versions VST800298 and later.
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Operation Errors
Table 6.6 Operation Error Displays
HOA
Keypad
Display
Name Page
oPE01 Drive Unit Setting Error 251
oPE02 Parameter Setting Range Error 251
oPE03 Multi-Function Input Setting Error 251
oPE05 Run Command Selection Error 252
oPE07 Multi-Function Analog Input Selection Error 252
HOA
Keypad
Display
Name Page
oPE09 PI Control Selection Error 252
oPE10 V/f Data Setting Error 252
oPE11 Carrier Frequency Setting Error 252
oPE28 Sequence Timer Error 253
oPE29 Baud Rate Setting Error 253
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Auto-Tuning Errors
Table 6.7 Auto-Tuning Error Displays
HOA
Keypad
Display
Name Page
End3 Rated Current Setting Alarm 254
End4 Adjusted Slip Value Fell Below Lower Limit 254
End5 Resistance Between Lines Error 254
End7 No-Load Current Alarm 254
Er-01 Motor Data Error 254
Er-02 Alarm 254
HOA
Keypad
Display
Name Page
Er-03 OFF Button Input 255
Er-04 Line-to-Line Resistance Error 255
Er-05 No-Load Current Error 255
Er-08 Rated Slip Error 255
Er-09 Acceleration Error 255
Er-12 Current Detection Error 255
6.3 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
227
6
Diagnostics &
Troubleshooting
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