YASKAWA A1000 Series Quick Start Manual page 199

Digital Operator Display
Feedback sensor has malfunctioned.
Feedback input circuit is damaged.
Digital Operator Display
FbL
Cause
Parameter settings for b5-13 and b5-14 are
incorrect.
PID feedback wiring is faulty.
Feedback sensor has malfunctioned.
Feedback input circuit is damaged.
Hbb
HbbF
HCA
Digital Operator Display
LT-1
Cause
The cooling fan has reached 90% of its
expected performance life.
Digital Operator Display
LT-2
Cause
The main circuit and control circuit
capacitors have reached 90% of their
expected performance lives.
Digital Operator Display
LT-3
Cause
The DC bus soft charge relay has reached
90% of expected performance life.
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
Check the sensor and replace it if damaged.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or a Yaskawa representative.
PID Feedback Loss
The PID feedback input is lower than the level set to b5-13 for longer than the time set to b5-14.
Check parameters b5-13 and b5-14.
Correct the wiring.
Check the sensor and replace it if damaged.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or a Yaskawa representative.
Safe Disable Signal Input
Both Safe Disable Input channels are open.
Safe Disable Signal Input
One Safe Disable channel is open while the other channel is closed.
Current Alarm
Drive current exceeded overcurrent warning level (150% of the rated current).
Cooling Fan Maintenance Time
The cooling fan has reached its expected maintenance period and may need to be replaced.
Note: The signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close
if H2-oo = 10.
Replace the cooling fan and set o4-03 to 0 to reset the Maintenance Monitor.
Capacitor Maintenance Time
The main circuit and control circuit capacitors are nearing the end of their expected performance life.
Note: The signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close
if H2-oo = 10.
Replace the drive.
Soft Charge Bypass Relay Maintenance Time
The DC bus soft charge relay is nearing the end of its expected performance life.
Note: The signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close
if H2-oo = 10.
Replace the drive.
Minor Fault Name
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
5.3 Alarm Detection
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