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u
Alarm and Error Displays
n
Faults
When the drive detects a fault, the ALM indicator LEDs remain lit without flashing. If the LEDs flash, the drive has detected
a minor fault or alarm.
Refer to Minor Faults and Alarms on page 265
for more information. Conditions such as overvoltage
or external faults can trip both faults and minor faults, therefore it is important to note whether the LEDs remain lit or if the
LEDs flash.
Table 6.5 Fault Displays
Digital Operator
Display
Name
Pg.
bUS
Option Communication Error
CE
MEMOBUS/Modbus
Communication Error
CF
Control Fault
CoF
Current Offset Fault
CPF02 A/D Conversion Error
CPF03 PWM Data Fault
CPF06
Drive Specification Mismatch during
Terminal Board or Control Board
Replacement
CPF07 Terminal Board Communication
Fault
CPF08 EEPROM Serial Communications
Fault
CPF11 RAM Fault
CPF12 FLASH Memory Fault
CPF13 Watchdog Circuit Exception
CPF14 Control Circuit Fault
CPF16 Clock Fault
CPF17 Timing Fault
CPF18 Control Circuit Fault
CPF19 Control Circuit Fault
or
<1>
CPF20 or
CPF21
RAM Fault
FLASH Memory Fault
Watchdog Circuit Exception
Clock Fault
CPF22 A/D Conversion Error
CPF23 PWM Feedback Data Fault
CPF24 Drive Capacity Signal Fault
CPF25 Terminal Board Not Connected
dEv
Excessive Speed Deviation (for
Simple V/f with PG)
dWAL DriveWorksEZ Program Error
Output
dWFL
DriveWorksEZ Fault
E5
MECHATROLINK Watchdog
Timer Error
EF0
Option External Fault
to
EF1 to
EF7
External Fault (input terminal S1 to
S7)
Err
EEPROM Write Error
FbH
Excessive PID Feedback
FbL
PID Feedback Loss
Digital Operator
Display
Name
Pg.
GF
Ground Fault
LF
Output Phase Loss
LF2
Current Imbalance
nSE
Node Setup Error
oC
Overcurrent
<3>
oFA00 Option Card Connection Error
<3>
oFA01 Option Unit Fault
oFA03 Option Card Fault
oFA04 Option Card Fault
to
oFA30 to
oFA43 Option Card Fault
oH
Heatsink Overheat
oH1
Heatsink Overheat
oH3
Motor Overheat 1 (PTC input)
oH4
Motor Overheat 2 (PTC input)
oL1
Motor Overload
oL2
Drive Overload
oL3
Overtorque Detection 1
oL4
Overtorque Detection 2
oL5
Mechanical Weakening Detection 1
oL7
High Slip Braking oL
oPr
Operator Connection Fault
oS
Overspeed (for Simple V/f with PG)
ov
Overvoltage
PF
Input Phase Loss
PGo
PG Disconnect (for Simple V/f with
PG)
rH
Dynamic Braking Resistor
rr
Dynamic Braking Transistor
<2>
SC
IGBT Short Circuit
SEr
Too Many Speed Search Restarts
STo
Pull-Out Detection
UL3
Undertorque Detection 1
UL4
Undertorque Detection 2
UL5
Mechanical Weakening Detection 2
<3>
Uv1
Undervoltage
<3>
Uv2
Control Power Supply Undervoltage
Uv3
Soft Charge Circuit Fault
6.3 Drive Alarms, Faults, and Errors
264
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual