IMPULSE•G+/VG+ Series 4 Technical Manual
November 2022
Page 188
Table 5-114: Maintenance Monitors
* Available only for 4810 and 41090 models.
Monitor
Display
Function
Units
U04-01
Drv Elapsed Time
Cumulative operation time of the VFD. The value for the cumulative
operation time counter can be reset in parameter O03-01. Use
parameter O03-02 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.
Hrs
U04-03
Fan Elapsed Time
Cumulative operation time of the cooling fan. The default value for
the fan operation time is reset in parameter O03-03. After the count
reaches 99999, the value will reset to 0 and start counting again.
Hrs
U04-04
Fan Life Mon
Main cooling fan usage time as a percentage of its expected
performance life. Parameter O03-03 can reset this monitor.
%
U04-05
Cap Life Mon
Main circuit capacitor usage time as a percentage of their expected
performance life. Parameter O03-05 can reset this monitor.
%
U04-06
ChgCirc Life Mon
Soft charge bypass relay maintenance time as a percentage of its
estimated performance life. Parameter O04-07 can reset this
monitor.
%
U04-07
IGBT Life Mon
IGBT usage time as a percentage of the expected performance life.
Parameter O03-09 can reset this monitor.
%
U04-08
Heatsink Temp
Heatsink temperature.
°C
U04-09
LED Oper Check
Lights all LED segments to verify the display is working properly.
-
U04-10
kWh Lower 4 dig
VFD output power. The value is a 9 digit number displayed across
two monitors, U04-10 and U04-11.
kWH
U04-11
kWh Upper 5 dig
-
MWH
U04-12
CPU Occup Rate
Amount of space being used in the CPU.
%
U04-13
Current PeakHold
Highest current value that occurred during run.
A
U04-14
Freq@ I PeakHold
Output frequency when the value shown in U04-13 occurred.
Hz
U04-16
Motor OL1 Level
Motor overload detection accumulator. 100% is equal to the OL1
detection level. Accumulator is reset when power is cycled.
%
U04-17
Drive OL2 Level
100% = OL2 detection level
%
U04-18
Reference Source
Source for the frequency reference as XY-nn.
-
U04-19
MEMOBUS Freq Ref
Frequency reference provided by Modbus (decimal).
%
U04-20
Option Freq Ref
Frequency reference input by an option card (decimal).
%
U04-21
Run Cmd Source
Source for the Run command as XY-nn.
-
U04-22
MEMOBUS Ref Reg
VFD control data set by Modbus communications register no.
0001H as a four-digit hexadecimal number.
-
U04-23
Option Ref Reg
VFD control data set by an option card as a four-digit hexadecimal
number.
-
U04-32*
Motor Temp (NTC)
Motor temperature (NTC).
U04-32 will display “20 °C” when an analog input is not set for motor
thermistor input H03-xx = E.
°C
U04-37*
OH Alarm Axis
Module where the oH alarm occurred as a binary number.
BIN
U04-38*
FAN Alarm Axis
Module where the FAn alarm occurred as a binary number.
BIN
U04-39*
VOF Alarm Axis
Module where the voF alarm occurred as a binary number.
BIN
