6.3 Drive Alarms, Faults, and Errors
240 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Table 6.5 Fault Displays
Note: Errors Uv1 and Uv2 are not saved to the drive's fault history.
LED Operator Display
<1> This fault is valid from software version 6000 or later.
Name Page LED Operator Display Name Page
bUS Option Communication Error 243 LF2 Current Imbalance 247
CE
MEMOBUS/Modbus
Communication Error
243 nSE
<1> Node Setup Error 247
CF Control Fault 243 oC Overcurrent 248
CoF Current Offset Fault 243 oFA00 Option Card Fault (Port A) 248
CPF02 A/D Conversion Error 244 oFA01 Option Unit Fault 248
CPF03 PWM Data Fault 244 oFA03 Option Card Fault (Port A) 249
CPF06
Drive specification mismatch
during Terminal Board or
Control Board replacement
244 oFA04 Option Card Fault (Port A) 249
CPF07
Terminal Board
Communication Fault
244
to
oFA30 to
oFA43
Option Card Fault (Port A) 249
CPF08
EEPROM Serial
Communications Fault
244 oH Heatsink Overheat 249
CPF11 RAM Fault 244 oH1 Heatsink Overheat 249
CPF12 FLASH Memory Fault 244 oH3 Motor Overheat 1 (PTC input) 249
CPF13 Watchdog Circuit Exception 244 oH4 Motor Overheat 2 (PTC input) 250
CPF14 Control Circuit Fault 244 oL1 Motor Overload 250
CPF16 Clock Fault 245 oL2 Drive Overload 251
CPF17 Timing Fault 245 oL3 Overtorque Detection 1 251
CPF18 Control Circuit Fault 245 oL4 Overtorque Detection 2 251
CPF19 Control Circuit Fault 245 oPr Operator Connection Fault 251
or CPF20 or
CPF21
RAM Fault 245 oS
Overspeed (for Simple V/f with
PG)
251
FLASH Memory Fault 245 ov Overvoltage 252
Watchdog Circuit Exception 245 PF Input Phase Loss 253
Clock Fault 245 PGo
PG Disconnect (for Simple V/f
with PG)
253
CPF22 A/D Conversion Error 245 rH Dynamic Braking Resistor 253
CPF23 PWM Feedback Data Fault 245 rr Dynamic Braking Transistor 253
CPF24 Drive Capacity Signal Fault 245 SEr
Too Many Speed Search
Restarts
254
dEv
Excessive
Speed Deviation (for
Simple V/f with PG)
245 STo Pull-Out Detection 254
EF0 Option Card External Fault 258 UL3 Undertorque Detection 1 254
to
EF1 to
EF6
External Fault (input terminal
S1 to S6)
246 UL4 Undertorque Detection 2 254
FbH Excessive PID Feedback 246 Uv1 Undervoltage 255
FbL PID Feedback Loss 246 Uv2
Control Power Supply
Undervoltage
255
GF Ground Fault 247 Uv3 Soft Charge Circuit Fault 255
LF Output Phase Loss 247
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