Yaskawa L1000E AC Drive Technical Manual for CIMR-LE Models for Elevator Applications - Manual (Page 289)

6.4 Alarm Detection
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6.4 Alarm Detection
◆ Alarm Codes, Causes, and Possible Solutions
Alarms are drive protection functions that do not necessarily cause the drive to stop. Once the cause of an alarm is
removed, the drive will return to the same status as before the alarm occurred.
When an alarm has been triggered, the ALM light on the digital operator display blinks and the alarm code display
flashes. If a multi-function output is set for an alarm (H2-†† = 10), that output terminal will be triggered for certain
alarms.
Refer to Minor Faults and Alarms on page 272 for information on alarm that trigger an alarm output.
Note: If a multi-function output is set to close when an alarm occurs (H2-†† = 10), it will also close when maintenance periods are
reached, triggering alarms LT-1 through LT-4 (triggered only if H2-†† = 2F).
Table 6.9 Alarm Codes, Causes, and Possible Solutions
Digital Operator Display Minor Fault Name
AEr
Communication Option Node ID Setting Error (CANopen)
Option card node address is outside the acceptable setting range.
Cause Possible Solutions
Station number is set outside the possible setting
range.
Set parameter F6-35 to the proper value if a CANopen option card is used.
Digital Operator Display Minor Fault Name
bb
Baseblock
Drive output interrupted as indicated by an external baseblock signal.
Cause Possible Solutions
External baseblock signal was entered via one of the
multi-function input terminals (S3 to S8).
Check external sequence and baseblock signal input timing.
Digital Operator Display Minor Fault Name
boL
Braking Transistor Overload
The braking transistor in the drive has been overloaded.
Cause Possible Solutions
The proper braking resistor has not been installed. Select the optimal braking resistor.
Digital Operator Display Minor Fault Name
bUS
Option Communication Error
• After initial communication was established, the connection was lost.
• Assign a Up/Down command or speed reference to the option card.
Cause Possible Solutions
Connection is broken or master controller stopped
communicating.
• Check for faulty wiring.
• Correct the wiring.
• Check for disconnected cables and short circuits. Repair as needed.
Option card is damaged. If there are no problems with the wiring and the fault continues to occur, replace the option card.
The option card is not properly connected to the
drive. • The connector pins on the option card are not properly lined up with the connector pins on the drive.
• Reinstall the option card.
A data error occurred due to noise.
• Check options available to minimize the effects of noise.
• Take steps to counteract noise in the control circuit wiring, main circuit lines and ground wiring.
• Try to reduce noise on the controller side.
• Use surge absorbers on magnetic contactors or other equipment causing the disturbance.
• Use recommended cables or some other type of shielded line. Ground the shield to the controller side or on the input power side.
• All wiring for comm. devices should be separated from drive input power lines. Install an EMC noise filter to the drive input power.
Digital Operator Display Minor Fault Name
CALL
Serial Communication Stand By
Communication has not yet been established.
Cause Possible Solutions
Communications wiring is faulty, there is a short
circuit, or something is not connected properly.
• Check for wiring errors.
• Correct the wiring.
• Check for disconnected cables and short circuits. Repair as needed.
Programming error on the master side. Check communications at start-up and correct programming errors.
Communications circuitry is damaged.
• Perform a self-diagnostics check.
• If the problem continues, replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
Termination resistor setting is incorrect.
A termination resistor must be installed at both ends of a communication line. Slave drives must have the internal termination resistor
switch set correctly. Place DIP switch S2 to the ON position.