YASKAWA A1000 Series User Manual

Digital Operator Display Minor Fault Name
Feedback sensor has malfunctioned. Check the sensor and replace it if damaged.
Feedback input circuit is damaged.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or a Yaskawa representative.
Digital Operator Display Minor Fault Name
FbL
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.
Cause Possible Solutions
Parameter settings for b5-13 and b5-14 are
incorrect.
Check parameters b5-13 and b5-14.
PID feedback wiring is faulty. Correct the wiring.
Feedback sensor has malfunctioned. Check the sensor and replace it if damaged.
Feedback input circuit is damaged.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or a Yaskawa representative.
Hbb
Safe Disable Signal Input
Both Safe Disable Input channels are open.
HbbF
Safe Disable Signal Input
One Safe Disable channel is open while the other channel is closed.
HCA
Current Alarm
Drive current exceeded overcurrent warning level (150% of the rated current).
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:
The
signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close
if H2-oo = 10.
Cause Possible Solutions
The cooling fan has reached 90% of its
expected performance life.
Replace the cooling fan and set o4-03 to 0 to reset the Maintenance Monitor.
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:
The
signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close
if H2-oo = 10.
Cause Possible Solutions
The main circuit and control circuit
capacitors have reached 90% of their
expected performance lives.
Replace the drive.
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:
The
signal closes when the maintenance period ends if H2-oo = 2F. The signal will not close
if H2-oo = 10.
Cause Possible Solutions
The DC bus soft charge relay has reached
90% of expected performance life.
Replace the drive.
5.3 Alarm Detection
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
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5
Troubleshooting

YASKAWA A1000 Series Specifications

General

Series	A1000
Type	AC Drive
Altitude	Up to 1000m without derating
Output Frequency	0-400 Hz
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Communication Options	Modbus, DeviceNet, Profibus, Ethernet/IP
Ambient Temperature	-10 to 50°C
Storage Temperature	-20 to 60°C
Humidity	5% to 95% (non-condensing)
Enclosure Rating	IP20
Horsepower	0.5 to 1000 HP
Power Range	0.4 - 630 kW (varies by voltage and model)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Cooling Method	Fan Cooled
Safety	Safe Torque Off (STO)