11.17 U: Monitors
452 YASKAWA SIEPC71061753C GA500 Technical Manual
No.
(Hex.)
Name Description MFAO Signal Level
U4-07
(07D7)
IGBT Maintenance
Shows the operation time of the IGBTs as a percentage of the estimated performance life of the
IGBTs.
The default value is 0. The value counts up from 0.
Use o4-09 [IGBT Maintenance Setting] to reset this monitor.
Unit: 1%
Note:
Replace the drive when this monitor is at 90%.
10 V: 100%
U4-08
(0068)
Heatsink Temperature
Shows the heatsink temperature of the drive.
Unit: 1 °C
10 V: 100 °C
U4-09
(005E)
LED Check
Turns on all of the keypad LEDs to make sure that the LEDs operate correctly.
1. With U4-09 displayed, press .
All LEDs on the keypad will turn on.
Note:
When Safety input 2 CH is open (STo), READY will flash.
No signal output available
U4-10
(005C)
kWh, Lower 4 Digits
Shows the lower 4 digits of the watt hour value for the drive.
Unit: 1 kWh
Note:
The watt hour is displayed in 9 digits. Monitor U4-11 [kWh, Upper 5 Digits] shows the upper
5 digits and U4-10 shows the lower 4 digits.
Example for 12345678.9 kWh:
U4-10: 678.9 kWh
U4-11: 12345 MWh
No signal output available
U4-11
(005D)
kWh, Upper 5 Digits
Shows the upper 5 digits of the watt hour value for the drive.
Unit: 1 MWh
Note:
Monitor U4-11 shows the upper 5 digits and U4-10 [kWh, Lower 4 Digits] shows the lower 4
digits.
Example for 12345678.9 kWh:
U4-10: 678.9 kWh
U4-11: 12345 MWh
No signal output available
U4-13
(07CF)
Peak Hold Current
Shows the hold value of the peak value (rms) for the drive output current.
Use U4-14 [PeakHold Output Freq] to show the drive output frequency at the time that the drive
holds the output current.
The drive will hold the peak hold current at the next start up and restart of the power supply. The
drive keeps the value that was under hold during baseblock (during stop).
The keypad shows the value of U4-13 in amperes (A). When looking at the monitor through
MEMOBUS/Modbus communications, the current is “8192 = drive rated current (A)”. Calculate
the current from the monitor value that is in at MEMOBUS/Modbus communications using
“Numerals being displayed / 8192 × drive rated current (A).
Unit: When the drive model changes, the display units for this parameter also change.
• 0.01 A units: B001 - B018, 2001 - 2042, 4001 - 4023
• 0.1A units: 2056 - 2082, 4031 - 4060
No signal output available
U4-14
(07D0)
PeakHold Output Freq
Shows the output frequency at which the peak value (rms) of the drive output current is held.
The peak hold current can be monitored by U4-13 [Peak Hold Current].
The peak hold output frequency will be cleared at the next startup and restart of the power supply.
The drive keeps the value that was under hold during baseblock (during stop).
Unit: 0.01 Hz
No signal output available
U4-16
(07D8)
Motor oL1 Level
Shows the integrated value of oL1 [Motor Overload] as a percentage of oL1 detection level.
Unit: 0.1%
10 V: 100%
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