u
U4: Maintenance Monitors
No.
(Addr.
Hex)
Name LCD Display Description
Analog
Output Level
Unit
U4-01
(004C)
<1>
Cumulative Operation
Time
Drv Elapsed Time
Displays the cumulative operation time of the drive. The value
for the cumulative operation time counter can be reset in
parameter o4-01. Use parameter o4-02 to determine if the
operation
time should start as soon as the power is switched on
or only while the Run command is present. The maximum
number displayed is 99999, after which the value is reset to 0.
No signal
output available
1 h
U4-02
(0075)
Number of Run
Commands
RUN Cmd Counter
Displays the number of times the Run command is entered.
Reset the number of Run commands using parameter o4-13.
This value will reset to 0 and start counting again after reaching
65535.
No signal
output available
1 Time
U4-03
(0067)
<2>
Cooling Fan Operation
Time
Fan Elapsed TIme
Displays the cumulative operation time of the cooling fan. The
default value for the fan operation time is reset in parameter
o4-03. This value will reset to 0 and start counting again after
reaching 99999.
No signal
output available
1 h
U4-04
(007E)
Cooling Fan
Maintenance
Fan Life Mon
Displays main cooling fan usage time as a percentage of its
expected
performance life. Parameter o4-03 can be used to reset
this monitor.
Replace the fan when this monitor reaches 90%.
No signal
output available
1%
U4-05
(007C)
Capacitor Maintenance Cap Life Mon
Displays main circuit capacitor usage time as a percentage of
their expected performance life. Parameter o4-05 can be used
to reset this monitor.
Replace the capacitor when this monitor reaches 90%.
No signal
output available
1%
U4-06
(07D6)
Soft Charge Bypass
Relay Maintenance
ChgCirc Life Mon
Displays the soft charge bypass relay maintenance time as a
percentage of its estimated performance life. Parameter o4-07
can be used to reset this monitor.
Replace the soft charge bypass relay when this monitor reaches
90%.
No signal
output available
1%
U4-07
(07D7)
IGBT Maintenance IGBT Life Mon
Displays IGBT usage time as a percentage of the expected
performance life. Parameter o4-09 can be used to reset this
monitor.
Replace the IGBT when this monitor reaches 90%.
No signal
output available
1%
U4-08
(0068)
Heatsink Temperature Heatsink Temp
Displays the heatsink temperature.
10 V: 100 °C 1 °C
U4-09
(005E)
LED Check LED Oper Check
Lights all segments of the LED to verify that the display is
working properly.
No signal
output available
–
U4-10
(005C)
kWh, Lower 4 Digits kWh Lower 4 dig
Monitors the drive cumulative output power usage. The value
is shown as a 9-digit number displayed across two monitors
U4-10 and U4-11.
Example:
12345678.9 kWh is displayed as:
U4-10: 678.9 kWh
U4-11: 12345 MWh
No signal
output available
1 kWh
U4-11
(005D)
kWh, Upper 5 Digits kWh Upper 5 dig
No signal
output available
1 MWh
U4-13
(07CF)
Peak Hold Current Current PeakHold
Displays the highest current value that occurred during run.
Note: The unit is expressed in 1 A for models 4A0930
and 4A1200.
No signal
output available
0.01 A
<3> <4>
<5>
U4-14
(07D0)
Peak Hold Output
Frequency
Freq@ I PeakHold
Displays the output frequency when the current value shown in
U4-13 occurred.
No signal
output available
0.01 Hz
U4-16
(07D8)
Motor Overload
Estimate (oL1)
Motor OL1 Level
Shows the value of the motor overload detection accumulator.
100% is equal to the oL1 detection level.
10 V: 100% 0.1%
B.13 U: Monitors
324
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
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