YASKAWA L1000A - Page 283

6.2 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual 283
Troubleshooting
6
■ Minor Faults and Alarms
Refer to Table 6.4 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- = 10). A fault (not an alarm) is present if the ALM LED lights without blinking.
Refer to Faults on page 281 for information on fault codes.
Table 6.4 Minor Fault and Alarm Displays
Digital Operator Display
Name
Minor Fault Output
(H2- = 10)
Page
LED Operator LCD Operator
AEr Node ID Setting Error (CANopen) YES 299
bb Drive Baseblock No output 299
boL Braking Transistor Overload YES 299
bUS Option Communication Error YES 299
CALL Serial Communication Stand By YES 299
CE MEMOBUS/Modbus Communication Error YES 300
CrST Cannot Reset YES 300
dEv Speed Deviation (for Control Mode with Encoder) YES 300
EF Up/Down Command Error YES 300
EF0 Option Card External Fault YES 300
to
EF3 to EF8 External Fault (input terminal S3 to S8) YES 300
Hbb
<1> Safe Disable Circuit Fault Signal (H1-HC, H2-HC) Release
L8-88 = 0: YES
L8-88 = 1: No (default)
301
HbbF
<1> Safe Disable Circuit Fault Signal (H1-HC, H2-HC) Release
L8-88 = 0: YES
L8-88 = 1: No (default)
301
HCA High Current Alarm YES 301
LT-1 Cooling Fan Maintenance Time No output
<2> 301
LT-2 Capacitor Maintenance Time No output
<2> 301
LT-3 Soft Charge Bypass Relay Maintenance Time No output
<2> 301
LT-4 IGBT Maintenance Time (90%) No output
<2> 301
oH Heatsink Overheat YES 302
oH3 Motor Overheat Alarm (PTC thermistor input) YES 302
oL3 Overtorque Detection 1 YES 302
oL4 Overtorque Detection 2 YES 302
oS Overspeed (for Control Mode with Encoder) YES 302
ov DC Bus Overvoltage YES 303
PASS MEMOBUS/Modbus Comm. Test Mode Complete No output 303
PGo Encoder Disconnected (for Control Mode with Encoder) YES 303
PGoH Encoder Disconnected (when using an encoder) YES 303
SE MEMOBUS/Modbus Self Test Failed YES 303
TrPC IGBT Maintenance Time (90%) YES 303
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