Yaskawa L1000E AC Drive Technical Manual for CIMR-LE Models for Elevator Applications - Manual (Page 291)

6.4 Alarm Detection
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Multi-function contact inputs are set incorrectly.
• Check if the unused terminals have been set for H1-†† = 2C to 2F (External Fault).
• Change the terminal settings.
Digital Operator Display Minor Fault Name
Hbb
Safe Disable Circuit Fault Signal (H1-HC, H2-HC) Release
Both Safe Disable Input channels are open.
Cause Possible Solutions
Both Safe Disable Inputs H1 and H2 are open.
• Check signal status at the input terminals H1 and H2.
• Check the Sink/Source Selection for the digital inputs.
• If the Safe Disable function is not utilized, check if the terminals H1-HC, and H2-HC are linked.
Internally, both Safe Disable channels are broken.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
Digital Operator Display Minor Fault Name
HbbF
Safe Disable Circuit Fault Signal (H1-HC, H2-HC) Release
One Safe Disable channel is open while the other one is closed.
Cause Possible Solutions
The signals to the Safe Disable inputs are wrong or
the wiring is incorrect. Check signal status at the input terminals H1 and H2. If the Safe Disable function is not utilized, the terminals H1-HC, and H2-HC
must be linked.
One of the Safe Disable channels is faulty.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
Digital Operator Display Minor Fault Name
HCA
High Current Alarm
Drive current exceeded overcurrent warning level (150% of the rated current).
Cause Possible Solutions
Load is too heavy. Either reduce the load for applications with repetitive operation (repetitive stops and starts, etc.), or replace the drive.
Accel/decel ramp is too short.
Calculate the amount of torque required for the desired acceleration and/or deceleration ramp relative to the inertia moment of the
load.
If the torque level is not right for the load, take the following steps:
• Increase the acceleration and deceleration times (C1-01 through C1-08).
• Increase the capacity of the drive.
A special-purpose motor is being used, or the drive is
attempting to run a motor greater than the maximum
allowable capacity.
• Check the motor capacity.
• Use a motor appropriate for the drive. Ensure the motor is within the allowable capacity range.
The current level increased due to a momentary
power loss or while attempting to perform a fault
reset.
The alarm will appear only briefly. There is no need to take action to prevent the alarm from occurring in such instances.
Digital Operator Display Minor Fault Name
LT-1
Cooling Fan Maintenance Time
The cooling fan has reached its expected maintenance period and may need to be replaced.
Note: An alarm output (H2-†† = 10) will only be triggered if H2-†† = 2F.
Cause Possible Solutions
The cooling fan has reached 90% of its expected
performance life.
Replace the cooling fan and reset the Maintenance Monitor by setting o4-03 to 0.
Digital Operator Display Minor Fault Name
LT-2
Capacitor Maintenance Time
The main circuit and control circuit capacitors are nearing the end of their expected performance life.
Note: An alarm output (H2-†† = 10) will only be triggered if H2-†† = 2F.
Cause Possible Solutions
The main circuit and control circuit capacitors have
reached 90% of their expected performance life. Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
Digital Operator Display Minor Fault Name
LT-3
Soft Charge Bypass Relay Maintenance Time
The DC bus soft charge relay is nearing the end of its expected performance life.
Note: An alarm output (H2-†† = 10) will only be triggered if H2-†† = 2F.
Cause Possible Solutions
The DC bus soft charge relay has reached 90% of
expected performance life. Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
Digital Operator Display Minor Fault Name
LT-4
IGBT Maintenance Time (90%)
IGBTs have reached 90% of their expected performance life.
Note: An alarm output (H2-†† = 10) will only be triggered if H2-†† = 2F.
Cause Possible Solutions
IGBTs have reached 90% of their expected
performance life.
Check the load, carrier frequency, and output speed.
NOTICE:
Optimize Performance Life. To maximize drive performance life, make sure the drive output current does not exceed 150% of the
drive rated current. Expected performance life estimates the number of drive starts at three million times if output current does not
exceed 150%. This assumes the carrier frequency is at its default setting (8 kHz for models 2A0018 to 2A0144, 4A0009 to 4A0114, 5
kHz for models 2A0181 to 2A0354, 4A0140 to 4A0260, and 2 kHz for model 2A0432) and a peak current of less than 150% of the
drive rated current.