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Adjustment of the output torque
(current) of the motor
Parameter
Name
Number
Zero current
152
detection level
Stall prevention
165
operation level for
restart
High-speed setting
271
maximum current
Middle-speed setting
272
minimum current
Brake opening
279
current
Current average value
557
monitor signal output
reference current
Energy saving
893
monitor reference
(motor capacity)
*1
The rated current differs according to the inverter capacity. Refer to rated specifications (page 446).
CAUTION
When Pr. 570 = "0 or 1", Pr. 260 PWM frequency automatic switchover becomes valid. (Refer to page 288.)
When using the FR-A720-02150 with LD or SLD set, always use a DC reactor (option FR-HEL-75K).
When using the FR-A740-01100 with LD or SLD set, always use a DC reactor (option FR-HEL-H90K).
(2) Precautions for the FR-A720-02150 (FR-A740-01100) or less and FR-A720-02880 (FR-
A740-01440) or more
If Pr. 570 is set to "0 (SLD) or 1 (LD)" when using FR-A720-02150 (FR-A740-01100), specifications of the inverter
change to that of the FR-A720-02880 (FR-A740-01440). Setting change of Pr. 570 is made valid after inverter reset
and all parameter clear.
Multiple Rating
Inverter
Setting
SLD
LD
A720-02150
ND
HD
SLD
LD
A720-02880
ND
HD
SLD
LD
A740-01100
ND
HD
SLD
LD
A740-01440
ND
HD
For example, when using the FR-A740-01100, setting "0" in Pr. 570 and performing all parameter clear after inverter
reset will change the setting range of Pr. 9 from "0 to 500A" to "0 to 3600A" and the minimum setting increments
from "0.01A" to "0.1A". (Refer to the parameter list for other parameters.)
158
0
0 to 120%
Setting Range
Initial Value
5%
Setting Range
0 to 120%
Initial Value
110%
Setting Range
0 to 120%
50%
Initial Value
0 to 120%
Setting Range
Initial Value
100%
Setting Range
0 to 220%
130%
Initial Value
SLD rated
Initial Value
current
*1
SLD value of
applied motor
Initial Value
capacity
*1
The inverter operates in the same manner as the FR-A720-02880 or more.
Parameter setting range, minimum setting increments, initial values, etc. change to those
of the 02880 or more. Refer to the parameter list for parameters whose values change.
No change
No change
The inverter operates in the same manner as the FR-A740-01440 or more.
Parameter setting range, minimum setting increments, initial values, etc. change to those
of the 01440 or more. Refer to the parameter list for parameters whose values change.
No change
No change
Pr. 570 Setting
2
1
(initial value)
0 to 150%
0 to 220%
5%
5%
0 to 150%
0 to 220%
120%
150%
0 to 150%
0 to 220%
50%
50%
0 to 150%
0 to 220%
100%
100%
0 to 220%
0 to 220%
130%
130%
LD rated
ND rated
current
current
*1
*1
LD value of
ND value of
applied motor
applied motor
capacity
capacity
*1
*1
Parameter Setting
Refer
to
3
Page
0 to 280%
252
5%
0 to 280%
270
200%
0 to 280%
382
50%
0 to 280%
382
100%
0 to 280%
221
130%
HD rated
398
current
*1
HD value of
applied motor
283
capacity
*1
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