YASKAWA L1000A Technical Manual page 254

6.2 Drive Alarms, Faults, and Errors
oFC51
oFC52
oFC53
oFC54
oH
oH1
oL1
oL2
oL3
oL4
oPr
oS
ov
PF
PF5
<1> Displayed as ,
will show , .
■
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-
Refer to Faults on page 253
AEr
bb
boL
bUS
CALL
CE
CrST
dEv
EF
EF0
EF3 to EF8
to
Hbb
HbbF
254
Table 6.3 Fault Displays (2)
Encoder Option Analog Circuit Error
Encoder Communication Timeout
Encoder Communication Data Error
Encoder Error
Heatsink Overheat
Heatsink Overheat
Motor Overload
Drive Overload
Overtorque Detection 1
Overtorque Detection 2
Operator Connection Fault
Overspeed (for Control Mode with
Encoder)
DC Bus Overvoltage
Input Phase Loss
Rescue Operation Power Supply
Deterioration Error
when occurring at drive power up. When one of the faults occurs after successfully starting the drive, the display
= 10). A fault (not an alarm) is present if the ALM LED lights without blinking.
for information on fault codes.
Table 6.4 Minor Fault and Alarm Displays
Node ID Setting Error (CANopen)
Drive Baseblock
Braking Transistor Overload
Option Communication Error
Serial Communication Stand By
MEMOBUS/Modbus Communication Error
Cannot Reset
Speed Deviation (for Control Mode with Encoder)
Up/Down Command Error
Option Card External Fault
External Fault (input terminal S3 to S8)
Safe Disable Signal Input
Safe Disable Circuit Fault Signal Input
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YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Encoder Disconnected (for Control Mode
PGo
with Encoder)
Encoder Disconnected (when using
PGoH
encoder)
rr Dynamic Braking Transistor Fault
SE1 Motor Contactor Response Error
SE2 Starting Current Error
SE3 Output Current Error
SE4 Brake Response Error
SvE Position Lock Error
UL3 Undertorque Detection 1
UL4 Undertorque Detection 2
Uv1 DC Bus Undervoltage
Uv2 Control Power Supply Voltage Fault
Uv3 Soft Charge Circuit Fault
voF Output Voltage Detection Error
– –
YES
No output
YES
YES
YES
YES
YES
YES
YES
YES
YES
L8-88 = 0: YES
L8-88 = 1: No (default)
L8-88 = 0: YES
L8-88 = 1: No (default)
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