YASKAWA L1000V Technical Manual page 168

6.2 Drive Alarms, Faults, and Errors
n
Minor Faults and Alarms
Refer to Table 6.3 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 167
Digital Operator Display
LED Operator LCD Operator
bb
boL
CrST
dEv
EF
to
EF3 to EF7
Hbb
HbbF
HCA
LT-1
LT-2
LT-3
LT-4
oH
oL3
oL4
oS
ov
PGo
TrPC
UL3
UL4
Uv
voF
168
= 10). A fault (not an alarm) is present if the ALM LED lights without blinking.
for information on fault codes.
Table 6.3 Minor Fault and Alarm Displays
Drive Baseblock
Braking Transistor Overload
Cannot Reset
Speed Deviation (simple PG feedback control modes)
Up/Down Command Error
External Fault (input terminal S3 to S7)
Safe Disable Signal Input
Safe Disable Circuit Fault Signal Input
High Current Alarm
Cooling Fan Maintenance Time
Capacitor Maintenance Time
Soft Charge Bypass Relay Maintenance Time
IGBT Maintenance Time (90%)
Heatsink Overheat
Overtorque Detection 1
Overtorque Detection 2
Overspeed (for Control Mode with Encoder)
DC Bus Overvoltage
Encoder Disconnected (for Control Mode with Encoder)
IGBT Maintenance Time (90%)
Undertorque Detection 1
Undertorque Detection 2
Undervoltage
Output Voltage Detection Error
YASKAWA EUROPE SIEP
Name
Minor Fault Output
(H2- = 10)
No output
YES
YES
YES
YES
YES
L8-88 = 0: YES
L8-88 = 1: No (default)
L8-88 = 0: YES
L8-88 = 1: No (default)
YES
No output
No output
No output
No output
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YASKAWA AC Drive L1000V Technical Manual
Page
177
177
177
177
177
177
178
178
178
178
178
178
178
178
179
179
179
180
180
180
180
180
181
181