B.3 Parameter Table
434 YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
■ U4: Maintenance Monitors
No. (Addr.) Name Description
Analog Output
Level
Unit Page
U4-01
(4CH, 98H,
99H)
<41>
Cumulative Operation 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 Up/Down command is
present. The maximum number displayed is 99999, after which the value is reset to 0.
No signal output
available
1 h –
U4-03
(67H, 94H,
9BH)
<42>
Cooling Fan Operation 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
(7EH)
Cooling Fan Maintenance
Displays main cooling fan usage time in as a percentage of its expected performance life.
Parameter o4-03 can be used to reset this monitor. The fan should be replaced when this
monitor reaches 90%.
No signal output
available
1% –
U4-05
(7CH)
Capacitor Maintenance
Displays main circuit capacitor usage time in as a percentage of their expected performance life.
The capacitors should be replaced when this monitor reaches 90%. Parameter o4-05 can be used
to reset this monitor.
No signal output
available
1% –
U4-06
(7D6H)
Soft Charge Bypass Relay
Maintenance
Displays the soft charge bypass relay maintenance time as a percentage of its estimated
performance life. The soft charge relay should be replaced when this monitor reaches 90%.
Parameter o4-07 can be used to reset this monitor.
No signal output
available
1% –
U4-07
(7D7H)
IGBT Maintenance
Displays IGBT usage time as a percentage of the expected performance life. The IGBTs should
be replaced when this monitor reaches 90%. Parameter o4-09 can be used to reset this monitor.
No signal output
available
1% –
U4-08
(68H)
Heatsink Temperature
Displays the heatsink temperature.
10 V: 100°C1°C–
U4-09
(5EH)
LED Check
Lights all segments of the LED to verify that the display is working properly.
No signal output
available
––
U4-10
(5CH)
kWh, Lower 4 Digits
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
(5DH)
kWh, Upper 5 Digits
No signal output
available
1 MWh –
U4-13
(7CFH)
Peak Hold Current
Displays the highest current value that occurred during a ride.
No signal output
available
0.01 A
<40>
–
U4-14
(7D0H)
Peak Hold Output Frequency
Displays the output frequency when the current value shown in U4-13 occurred.
No signal output
available
0.01 Hz –
U4-16
(7D8H)
Motor Overload Estimate
(oL1)
Shows the value of the motor overload detection accumulator. 100% is equal to the oL1
detection level.
10 V: 100% 0.1% –
U4-17
(7D9H)
Drive Overload Calculations
(oL2)
Displays the level of the drive overload detection (oL2). A value of 100% is equal to the oL2
detection level.
10 V = 100% 0.1% –
U4-18
(7DAH)
Speed Reference Selection
Results
Displays the source for the speed reference as XY-nn.
X: indicates which reference is used:
1 = Reference 1 (b1-01)
Y-nn: indicates the reference source
0-01 = Digital operator
1-01 = Analog (terminal A1)
1-02 = Analog (terminal A2)
2-02 to 8 = Digital Inputs (d1-02 to 8)
3-01 = MEMOBUS/Modbus communications
4-01 = Communication option card
No signal output
available
––
U4-19
(7DBH)
Speed Reference from
MEMOBUS/Modbus Comm.
Displays the speed reference provided by MEMOBUS/Modbus (decimal).
No signal output
available
0.01%
<29>
–
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
SIEP_C710616_38F_5_0.book 434 ページ ２０１５年１１月９日 月曜日 午後３時３６分
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