No.
(Addr.
Hex)
Name Description
Analog Output
Level
Unit
U3-48
(3026)
Date Year at 10th Most
Recent Fault
Fault 10 YYYY
Displays the year when the tenth most recent fault occurred.
No signal output
available
–
U3-49
(3027)
Date Month and Day at
10th Most Recent Fault
Fault 10 MMDD
Displays the date and day when the tenth most recent fault occurred.
No signal output
available
–
U3-50
(3028)
Time Hours and Minutes
at 10th Most Recent
Fault 10 HHMM
Displays the time when the tenth most recent fault occurred.
No signal output
available
–
u
U4: Maintenance Monitors
No.
(Addr.
Hex)
Name Description
Analog Output
Level
Unit
U4-01
(4C)
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 65535.
Note: This monitor is only updated every 10 operating hours.
No signal output
available
1 h
U4-02
(75)
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
(67)
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. The maximum
number displayed is 65535.
Note: This monitor is only updated every 10 operating hours.
No signal output
available
1 h
U4-04
(7E)
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.
No signal output
available
1%
U4-05
(7C)
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.
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.
No signal output
available
1%
U4-07
(07D7)
IGBT Maintenance
IBGT Life Mon
Displays IGBT usage time as a percentage of the expected performance
life. Parameter o4-09 can be used to reset this monitor.
No signal output
available
1%
U4-08
(68)
Heatsink Temperature
Heatsink Temp
Displays the heatsink temperature.
Note: This monitor reports the correct value only when the drive is
running.
10 V: 100 °C 1 °C
U4-09
(5E)
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
(5C)
kWh, Lower 4 Digits
kWh Lower 4 dig
Monitors the drive output power. The value is shown as a 9-digit number
displayed across two monitor parameters, 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
(5D)
kWh, Upper 5 Digits
kWh Upper 5 dig
No signal output
available
1 MWh
U4-13
(7CF)
Peak Hold Current
Current PeakHold
Displays the highest current value that occurred during run.
No signal output
available
0.01 A
<1>
U4-14
(7D0)
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
(7D8)
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
344
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
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