YASKAWA CR700, Техническое руководство, Страница: 372 / 886

6.5 Minor Faults/Alarms
372 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Code Name Causes Possible Solutions
TiM Keypad Time Not Set
There is a battery in the LCD keypad, but the date
and time are not set.
Set the date and time with the LCD keypad.
Note:
• Use o4-24 [bAT Detection Selection] to enable/disable TiM detection.
• If the drive detects this error, the terminal assigned to H2-01 to H2-05 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
TrPC IGBT Maintenance Time (90%)
The IGBT is at 90% of its expected performance
life.
Replace the IGBT or the drive. For information about replacing
the control board, contact Yaskawa or your nearest sales
representative.
Note:
If the drive detects this error, the terminal assigned to
H2-01 to H2-05 = 10 [MFDO Function Select = Alarm]
will be ON.
Code Name Causes Possible Solutions
Uv Undervoltage The drive input power voltage is changing too
much.
• Review the power supply voltage so that it matches the drive
rated voltage.
• Make the drive input power stable.
• If the input power supply is good, examine the magnetic
contactor on the main circuit side for problems.
There is a phase loss in the drive input power. Examine for wiring errors or disconnected wires in main circuit
drive input power, and repair problems.
There is loose wiring in the drive input power
terminals.
Tighten the terminal screws to the correct tightening torque.
There was a loss of power. Improve the power supply.
The main circuit capacitors have become
unserviceable.
Examine the capacitor maintenance time in monitor U4-05
[CapacitorMaintenance]
. If
U4-05
is more than 90%, replace the
control board or the drive. For information about replacing the
control board, contact Yaskawa or your nearest sales
representative.
The drive input power transformer is too small and
voltage drops when the power is switched on.
• Examine for an alarm when a molded-case circuit breaker,
Leakage Breaker (ELCB, GFCI, or RCM/RCD) (with
overcurrent protective function), or magnetic contactor is ON.
• Check the capacity of the drive power supply transformer.
Air inside the drive is too hot. Measure the ambient temperature of the drive.
The Charge LED is broken. Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
Note:
• The drive detects this error if one of these conditions is correct when the Run command has not been input while the drive is stopped.
– The DC bus voltage decreased lower than
L2-05 [Undervoltage Detection Lvl (Uv1)]
setting value.
– The Contactor that prevents inrush current in the drive was opened.
– There is low voltage in the control drive input power.
• If the drive detects this error, the terminal assigned to
H2-01 to H2-05 = 10 [MFDO Function Select = Alarm]
will be ON.