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Adjustment of the output torque (current) of the motor
4.3.5 Multiple rating (Pr. 570)
• The initial value and setting range of the following parameters are changed by performing reset and all parameter
clear after changing this parameter setting.
• Reflect the Pr. 570 setting in the following procedure.
1) Change the Pr. 570 setting.
2) Reset the inverter.
3) Perform all parameter clear.
*1 The rated current differs according to the inverter capacity. Refer to rated specifications (page 370).
*2 For the FR-F720-02330(FR-F740-01160) or less, SLD/LD value of applied motor capacity is the same. Refer to rated specifications (page 370).
You can use the inverter by changing the overload current rating specifications according to load applications.
Note that the control rating of each function changes.
Parameter
Number
Name Initial Value
Setting
Range
Description
570 Multiple rating setting 0
0
SLD
Surrounding air temperature 40°C (104°F),
Overload current rating 110% 60s, 120% 3s
(Inverse time characteristics)
1
LD
Surrounding air temperature 50°C (122°F),
Overload current rating 120% 60s, 150% 3s
(Inverse time characteristics)
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 190)
Parameter
Number
Name
Pr. 570 Setting
Refer to
Page
0
(initial value)
1
9
Electronic thermal O/L
relay
Initial Value SLD rated current *1 LD rated current *1 107
22
Stall prevention operation
level
Setting Range 0, 0.1 to 120%, 9999 0, 0.1 to 150%, 9999
81
Initial Value 110% 120%
23
Stall prevention operation
level compensation factor
at double speed
Setting Range 0 to 150%, 9999 0 to 200%, 9999
81
Initial Value 9999 9999
48
Second stall prevention
operation current
Setting Range 0, 0.1 to 120% 0, 0.1 to 150%
81
Initial Value 110% 120%
56
Current monitoring
reference
Initial Value SLD rated current
*1 LD rated current *1 147
148
Stall prevention level at
0V input
Setting Range 0 to 120% 0 to 150%
81
Initial Value 110% 120%
149
Stall prevention level at
10V input
Setting Range 0 to 120% 0 to 150%
81
Initial Value 120% 150%
150
Output current detection
level
Setting Range 0 to 120% 0 to 150%
135
Initial Value 110% 120%
165
Stall prevention operation
level for restart
Setting Range 0 to 120% 0 to 150%
152
Initial Value 110% 120%
557
Current average value
monitor signal output
reference current
Initial Value SLD rated current
*1 LD rated current *1 305
893
Energy saving monitor
reference (motor
capacity)
Initial Value
SLD value of applied
motor capacity
*2
LD value of applied
motor capacity
*2
164
CAUTION
When Pr. 570 = "0" (initial value), Pr.260 PWM frequency automatic switchover becomes invalid. (Refer to page 169.)