YASKAWA T1000A, Technical Manual, Page: 274 / 517

6.3 Drive Alarms, Faults, and Errors
274 YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
n
Minor Faults and Alarms
Table 6.10 give an overview of possible alarm codes. As conditions such as overvoltage can trip both a fault and alarm, it
is important to distinguish between faults and alarms in order to find the right corrective action.
If an alarm is detected, the ALM LED will blink and the alarm code display flashes. The majority of alarms will trigger a
digital output programmed for alarm output (H2-
††
= 10). If the ALM LED lights without blinking, this means that a
fault has been detected (not an alarm). Information on fault codes can be found in
Faults on page 273
.
Table 6.10 Minor Fault and Alarm Displays
FbH Excessive PID Feedback 280 rF Braking Resistor Fault 286
FbL PID Feedback Loss 280 rH Dynamic Braking Resistor 287
GF Ground Fault 281 rr Dynamic Braking Transistor 287
LF Output Phase Loss 281 SC Output Short-Circuit or IGBT Fault 287
LF2 Current Imbalance 281 SEr Too Many Speed Search Restarts 287
LSo LSo Fault 281 STo Pull-Out Detection 287
nSE Node Setup Error 281 SvE Zero-Servo Fault 287
oC Overcurrent 282 UL3 Undertorque Detection 1 288
oFA00 Option Card Connection Error (CN5-A) 282 UL4 Undertorque Detection 2 288
oFA01 Option Card Fault (CN5-A) 282 Uv1 Undervoltage 288
oFA02 Option Card Fault (CN5-A) 282 Uv2 Control Power Supply Undervoltage 288
to
oFA03 to oFA06 Option Card Error (CN5-A) 282
Uv3 Soft Charge Circuit Fault 288
voF Output Voltage Detection Fault 288
,
oFA10, oFA11 Option Card Error (CN5-A) 282 – – – –
<1> Displays or if a control circuit error occurs while the drive is starting up.
Displays or if a control circuit error occurs mid-operation.
Digital Operator Display
Name
Minor Fault Output
(H2-
††
= 10)
Page
LED Operator LCD Operator
bb Drive Baseblock No output 289
boL Braking Transistor Overload Fault YES 289
bUS Option Card Communications Error YES 289
CALL Serial Communication Transmission Error YES 289
CE MEMOBUS/Modbus Communication Error YES 289
CrST Cannot Reset YES 290
dEv Excessive Speed Deviation (for Control Mode with PG) YES 290
dnE Drive Disabled YES 290
EF Run Command Input Error YES 290
EF0 Option Card External Fault YES 290
to
EF1 to EF8 External Fault (input terminal S1 to S8) YES 290
FAn Internal Fan Fault YES 291
FbH Excessive PID Feedback YES 291
FbL PID Feedback Loss YES 291
Digital Operator Display
Name Page
Digital Operator Display
Name Page
LED Operator LCD Operator LED Operator LCD Operator