35
OPERATION
(1) Monitor description list (Pr. 1)
(2) Cumulative energization time carrying-over time (Pr.1
="3", Pr.78
)
• Cumulative energization time monitor (Pr.1
="3") accumulates energization
time from shipment of the brake unit every one hour.
Time is not accumulated if power is turned off within one hour.
• If the cumulative value exceeds 65535h (monitor display is up to "655"), it
is added up from 0. Use Pr.78
to check the number of cumulative
energization time monitor exceeded "655".
Pr.1
setting
Monitor item
Incre
ments
Description
0
Regeneration
status display
1%
Indicates the ratio of brake unit operation during the
specified time
1 DC bus voltage 1V DC bus voltage is displayed.
2
DC current
voltage peak
value
1V
Holds the peak value of the DC bus voltage monitor
(
Pr.1
="1"). (clears at every inverter power on)
3
Cumulative
energization time
100h
Accumulated energization time (power on time) after
shipment of the brake unit is displayed. Energization
time is stored in EEPROM every one hour. However,
the displayed increments is 100h and "100h" is
indicated as "1" and "200h" as "2".
The value is cleared to 0h when the accumulated
value exceeds 65535h and one count is added to
Pr.78. (up to "655" is displayed on the panel)
4
Regenerative
brake duty
(%ED)
0.1%
Heat amount currenctly accumulated is displayed in
% as brake duty. A value less than 0.1% is rounded
up to display.
• FR-BU2 mode (Pr.0 ="0" (initial value))
MT-BU5 mode (
Pr.0 ="2")
If the brake duty exceeds 10%, regenerative brake
is not operated. When the brake duty has fallen to
or below 10%, brake operation starts.
• BU mode (Pr.0 ="1")
Thermal heat cumulative value is displayed. A
value less than 1 is rounded up to display.
(Thermal alarm ( ) is activated when the
value reaches 100%.)
5
Regenerative
brake duty peak
value
0.1%
Holds the peak value of the regenerative brake duty
(%ED) monitor (
Pr.1
="4").
A value less than 0.1% is rounded up to display.
Clamped at 100%.
A peak value since power on is held and cleared at
every reset.
The amount of thermal heat peak value is displayed
in the BU mode (
Pr.0="1"). Clamped at 100%.
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