YASKAWA T1000A Technical Manual page 274

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