YASKAWA T1000V, Техническое руководство

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6.5 Alarm Detection
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 259
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LED Operator Display Minor Fault Name
Hbb
Safe Disable Signal Input
Safe Disable Input channel is open.
Cause Possible Solutions
Minor Fault
Output
(H2- †† = 10)
There is no signal at terminal H1.
Check if external safety circuit tripped and disabled the drive. If the Safe Disable
function is not utilized, check if the terminals HC and H1 are linked.
YES
Internally, both Safe Disable channels
are broken.
Replace the drive. YES
LED Operator Display Minor Fault Name
HCA
Current Alarm
Drive current exceeded overcurrent warning level (150% of the rated current).
Cause Possible Solutions
Minor Fault
Output
(H2- †† = 10)
Load is too heavy.
• Measure the current flowing through the motor.
• Reduce the load or increase the capacity of the drive.
YES
Acceleration and deceleration times are
too short.
• Calculate the torque required during acceleration and for the inertia moment.
• 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.
YES
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.
YES
The current level increased due to Speed
Search after a momentary power loss or
while attempting to perform a fault
restart.
The alarm will appear only briefly. There is no need to take action to prevent the alarm
from occurring in such instances.
YES
LED Operator Display Minor Fault Name
oH
Heatsink Overheat
The temperature exceeded the maximum allowable value.
Cause Possible Solutions
Minor Fault
Output
(H2- †† = 10)
Surrounding temperature is too high
• Check the surrounding temperature.
• Improve the air circulation within the enclosure panel.
• Install a fan or air conditioner to cool surrounding area.
• Remove anything near drive that may cause extra heat.
YES
Internal cooling fan has stopped.
• Replace the cooling fan. Refer to Cooling Fan Replacement on page 288 .
• After replacing the drive, reset the cooling fan maintenance parameter to (o4-03 =
“0”).
YES
Airflow around the drive is restricted.
• Provide proper installation space around the drive as indicated in the manual. Refer
to Installation Orientation (Heatsink-Cooled Drive, Finless Drive) on page 34 .
• Allow for the specified space and ensure that there is sufficient circulation around
the control panel.
YES
• Check for dust or foreign materials clogging cooling fan.
• Clear debris caught in the fan that restricts air circulation.
YES
LED Operator Display Minor Fault Name
oH2
Drive Overheat Warning
“Drive Overheat Warning” was input to a multi-function input terminal, S1 through S6 (H1-
†† = B)
Cause Possible Solutions
Minor Fault
Output
(H2- †† = 10)
An external device triggered an overheat
warning in the drive. • Search for the device that tripped the overheat warning.
• Solving the problem will clear the warning.
YES