YASKAWA A1000 HHP Programming Manual page 207

Digital Operator Display
Both Safe Disable Inputs H1 and H2 are
open.
Internally, both Safe Disable channels are
broken.
<1> Terminals H1, H2, DM+, and DM- on 600 V class models are designed to the functionality, but are not certified to IEC/EN 61800-5-1, ISO/EN
13849 Cat. 3, IEC/EN 61508 SIL2, Insulation coordination: class 1.
Digital Operator Display
HbbF
Cause
The signals to the Safe Disable inputs are
wrong or the wiring is incorrect.
One of the Safe Disable channels is faulty.
<1> Terminals H1, H2, DM+, and DM- on 600 V class models are designed to the functionality, but are not certified to IEC/EN 61800-5-1, ISO/EN
13849 Cat. 3, IEC/EN 61508 SIL2, Insulation coordination: class 1.
Digital Operator Display
HCA
Cause
Load is too heavy.
Acceleration and deceleration times are too
short.
A special-purpose motor is being used, or
the drive is attempting to run a motor
greater than the rated output current.
The current level increased due to Speed
Search after a momentary power loss or
while attempting to perform a fault restart.
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.
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
• 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, determine if terminals H1-HC, and H2-HC are linked.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
<1>
Safe Disable Signal Input
One Safe Disable channel is open while the other channel is closed.
Check signal status at the input terminals H1 and H2. If the Safe Disable function is not utilized, terminals
H1-HC, and H2-HC must be linked.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
Current Alarm
Drive current exceeded overcurrent warning level (150% of the rated current).
Reduce the load for applications with repetitive operations (i.e., stops and starts), or use a larger drive.
• Calculate the torque required during acceleration and for the moment of inertia.
• 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).
• Use a larger drive.
• Check the motor capacity.
• Use a motor appropriate for the drive. Ensure the motor is within the rated output current range.
The alarm will only appear briefly. There is no need to take action to prevent the alarm from occurring in
such instances.
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.
Minor Fault Name
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
2.5 Alarm Detection
207
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