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Setting of unit's digit (connection circuit
selection)
Breaking-resistor
Number
Connection circuit
of Rs
0
1
1
2
2
2
3
4
4
3
5
6
6
9
7
4
8
8
1) Limited by the %ED value of the braking
transistor inside the inverter.
Set the function code both " F13" and "U59 " before
operating the inverter, and don't change the functions
during operation. The integrated thermal data is cleared
immediately, when function code " F13" or "U59 " are
changed. The overheat protection of resistor becomes
invalid. When function codes " F13" or "U59 " are
changed in the state where temperature has risen, the
overheat protection of resistor becomes invalid also.
As there is a possibility of damaging the inverter, a
resistor value less than standard value should not be
connected.
When designing a network of braking resistors for
higher %ED, construct so that power is consumed
equally in each resistor.
When resistors are used of other values to those in
the table, function code F13 should be set to "0".
When resistor values less than Standard applied
resistor value is set to the function code, regeneration
operation is invalid. OU alarm will be occurred.
If connection of resistor and setting value of resistor
is not corresponded, there is a possibility of damaging
the resistor and the inverter.
Failure may result.
5 Function Selection
**1)
Power
Total
Duty
consumption per
resistance
cycle
resistance
[Ω]
[%ED]
(comparatively)
10%
R
100%
20%
2R
50%
20%
(1/2)R
50%
40%
R
25%
30%
3R
33%
50%
(3/2)R
17%
50%
R
11%
40%
4R
25%
50%
2R
12.5%
123
U60 Regeneration avoidance at declaration
This function is available, when torque limit
(brake) of F41( or E17) is set to "0%".
U 6 0
U S E R
Setting range: 0, 1
Set value
Torque limit operation
0
(for high response use)
OU alarm avoidance operation
1
(for only deceleration or Large inertia use)
If function code U60 is set to "0", braking
torque is kept to about 0% under acceleration,
deceleration, and constant speed states.
Output frequency is controlled to correspond
to a rapid change in motor load to prevent OU
trip. Deceleration time becomes longer than
the set deceleration time (F08).
In case of setting value U60 to "1", compared
with setting value "0", torque limiting is
applied only during deceleration time and to
prevent the rise of the DC voltage of the main
circuit, and avoid OU trip.
Although deceleration time becomes longer
than the set value of F08, it becomes shorter
than setting value "0" of U60. OU trip may
occur if load changes rapidly during
deceleration.
U61 Voltage detect offset and gain
adjustment
30kW or more only.
For adjustment only when a printed circuit
board is replaced during maintenance, etc. If
not necessary, do not use this function.
U 6 1
U S E R
Setting range: 0, 1, 2
Inverter
Operation
capacity
22kW or more 0 : Inactive(fixed)
0 : Inactive
30kW or less
1 : Voltage detect offset adjustment
2 : Voltage detect gain adjustment
6 0
Operation
6 1
5-71
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