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 129
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 5.4 Fault Displays
LED Operator
Display
Name Pg.
CE
MEMOBUS/Modbus
Communication Error
130
CoF Current Offset Fault 130
or
<1>
CPF00
or
CPF01
CPF11 – RAM Fault 130
CPF12 – FLASH Memory
Fault
130
CPF14 – Control Circuit
Fault
130
CPF17 – Timing Fault 130
CPF18 – Control Circuit
Fault
130
CPF02 A/D Conversion Error 131
CPF06
Drive specification
mismatch during Terminal
Board or Control Board
replacement
131
CPF08
EEPROM Serial
Communications Fault
131
or
<2>
CPF20
or
CPF21
RAM Fault 131
FLASH Memory Fault 131
Watchdog Circuit
Exception
131
Clock Fault 131
CPF22 A/D Conversion Error 132
CPF23 PWM Feedback Data Fault 132
LED Operator
Display
Name Pg.
CPF24 Drive Capacity Signal Fault 132
EF0 Option Unit External Fault 132
to EF1 to
EF5
External Fault (input
terminal S1 to S5)
132
Err EEPROM Write Error 133
LF Output Phase Loss 133
oC Overcurrent 133
oFA01 Option Disconnected 134
oH1 Heatsink Overheat 135
oL1 Motor Overload 135
oL2 Drive Overload 136
oL3 Overtorque Detection 1 136
oPr Operator Connection Fault 137
ov Overvoltage 143
PF Input Phase Loss 138
rH Dynamic Braking Resistor 138
<3>
Uv1
Undervoltage 139
Uv3 Soft Charge Circuit Fault 139
<1>
Displayed as
when occurring at drive power up. When one of the faults occurs after successfully
starting the drive, the display will show .
<2>
Displayed as
when occurring at drive power up. When one of the faults occurs after successfully
starting the drive, the display will show .
5.3 Drive Alarms, Faults, and Errors
128
YASKAWA ELECTRIC TOEP C710606 26B YASKAWA AC Drive – J1000 Quick Start Guide
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