11.14 U: Monitors
274 YASKAWA SIEPYEULA5001C LA500 Technical Manual
No.
(Hex.)
Name Description MFAO Signal Level
U3-19
(0812)
ElapsedTime@9thFault
Shows the cumulative operation time when the ninth most recent fault occurred.
Unit: 1 h
No signal output available
U3-20
(0813)
ElapsedTime@10 Fault
Shows the cumulative operation time when the tenth most recent fault occurred.
Unit: 1 h
No signal output available
◆ U4: Maintenance Monitors
No.
(Hex.)
Name Description MFAO Signal Level
U4-02
(0075)
Num of Run Commands
Shows how many times that the drive has received a Run command.
Use parameter o4-13 [RUN Command Counter @ Initialize] to reset this monitor. The maximum
value that the monitor will show is 65535. After this value is more than 65535, the drive
automatically resets it and starts to count from 0 again.
Unit: 1
10 V: 65535 times
U4-04
(007E)
Cool Fan Maintenance
Shows the cumulative operation time of the cooling fans as a percentage of the estimated
performance life of the cooling fans.
The default value is 0. The value counts up from 0.
Use o4-03 [Fan Operation Time Setting] to reset this monitor.
Unit: 1%
Note:
Replace the cooling fans when this monitor is at 90%.
10 V: 100%
U4-05
(007C)
CapacitorMaintenance
Shows the operation time of the electrolytic capacitors for the main circuit and control circuit as a
percentage of the estimated performance life of the electrolytic capacitors.
The default value is 0. The value counts up from 0.
Use o4-05 [Capacitor Maintenance Setting] to reset this monitor.
Unit: 1%
Note:
Replace the electrolytic capacitor when this monitor is at 90%.
10 V: 100%
U4-06
(07D6)
PreChargeRelayMainte
Shows the operation time of the soft charge bypass relay as a percentage of the estimated
performance life of the soft charge bypass relay.
The default value is 0. The value counts up from 0.
Use o4-07 [Softcharge Relay Maintenance Set] to reset this monitor.
Unit: 1%
Note:
Replace the drive when this monitor is at 90%.
10 V: 100%
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
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