Troubleshooting; Fault Detection - YASKAWA L1000A Quick Start Manual

5 Troubleshooting

5 Troubleshooting

◆ Fault Detection

Fault Displays, Causes, and Possible Solutions
■
Faults are detected for drive protection, and cause the drive to stop while triggering the fault output terminal
MA-MB-MC. Remove the cause of the fault and manually clear the fault before attempting to run the drive again.
Digital Operator Display
or
CPF00 or CPF01
<1>
to ,
CPF11 to CPF14,
to
CPF16 to CPF21
<1>
CPF26 to CPF34
to
132
Table 35 Detailed Fault Displays, Causes, and Possible Solutions
Braking Transistor Overload
boL
The braking transistor has reached its overload level.
Option Communication Error
bUS
• The connection was lost after establishing initial communication.
• Only detected when the Up/Down command speed reference is assigned to an option card.
MEMOBUS/Modbus Communication Error
CE
Communication data was not received for the amount of time set in parameter, H5-09
Communication Fault Detection Time.
Control Fault
CF
The torque limit was reached continuously for three seconds or longer while ramping to stop in OLV
Control.
Current Offset Fault
CoF
The current sensor is damaged or there was residual induction current in the motor (e.g., during
sudden deceleration or when coasting) when the drive attempted to start the motor.
Control Circuit Error
A/D Conversion Error
CPF02
An A/D conversion error or control circuit error occurred.
Control Board Connection Error
CPF03
Connection error between the control board and the drive
EEPROM Memory Data Error
CPF06
An error in the data saved to EEPROM
CPF07
Terminal Board Connection Error
CPF08
Control Circuit Error
CPF22
Hybrid IC Failure
Control Board Connection Error
CPF23
Connection error between the control board and the drive
Drive Unit Signal Fault
CPF24
The drive capacity cannot be detected correctly (drive capacity is checked when the drive is powered
up).
Terminal Board not Connected
CPF25
Control Circuit Error
CPU error
A/D Conversion Error
CPF35
An A/D conversion error or control circuit error occurred.
Fault Name
YASKAWA ELECTRIC TOEP C710616 38H YASKAWA AC Drive-L1000A Quick Start Guide