Multiple Rating (Pr. 570) - Mitsubishi Electric FR-A720-00030-NA Instruction Manual

4.8.5

Multiple rating (Pr. 570)

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
Name
Number
570 Multiple rating setting
* This function is valid for V/F control only. This parameter can be set only when "9999" is set in Pr. 80, Pr. 81, Pr. 453, and Pr. 454.
(1) Parameters whose initial value and setting range are changed by Pr. 570 Multiple rating
setting
• 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.
Parameter
Name
Number
Electronic thermal
9
O/L relay
Stall prevention
22
operation level
Stall prevention operation
23 level compensation factor
at double speed
Second stall
48 prevention operation
current
Current monitoring
56
reference
Reference value at
62
acceleration
Reference value at
63
deceleration
Third stall prevention
114
operation current
Stall prevention level
148
at 0V input
Stall prevention level
149
at 10V input
Output current
150
detection level
Initial Value
2
0
SLD rated
Initial Value
current
*1
Setting Range 0 to 400%
Initial Value 110%
0 to 150%,
Setting Range
9999
Initial Value 9999
0 to 120%
Setting Range
110%
Initial Value
SLD rated
Initial Value
current
*1
Setting Range 0 to 120%
Initial Value 9999
Setting Range 0 to 120%
9999
Initial Value
Setting Range 0 to 120%
Initial Value 110%
0 to 120%
Setting Range
110%
Initial Value
0 to 120%
Setting Range
120%
Initial Value
0 to 120%
Setting Range
110%
Initial Value
Adjustment of the output torque
(current) of the motor
Setting
Description
Range
SLD
Surrounding air temperature 40°C (104°F),
0 *
Overload current rating 110% 60s, 120% 3s
(Inverse time characteristics)
LD
Surrounding air temperature 50°C (122°F),
1 *
Overload current rating 120% 60s, 150% 3s
(Inverse time characteristics)
ND
Surrounding air temperature 50°C (122°F),
2
Overload current rating 150% 60s, 200% 3s
(Inverse time characteristics)
HD
Surrounding air temperature 50°C (122°F),
3
Overload current rating 200% 60s, 250% 3s
(Inverse time characteristics)
Pr. 570 Setting
2
1
(initial value)
LD rated ND rated
current current
*1 *1
0 to 400% 0 to 400%
120% 150%
0 to 200%, 0 to 200%,
9999 9999
9999 9999
0 to 150% 0 to 220%
120% 150%
LD rated ND rated
current current
*1 *1
0 to 150% 0 to 220%
9999 9999
0 to 150% 0 to 220%
9999 9999
0 to 150% 0 to 220%
120% 150%
0 to 150% 0 to 220%
120% 150%
0 to 150% 0 to 220%
150% 200%
0 to 150% 0 to 220%
120% 150%
Refer
to
3
Page
HD rated
185
current
*1
0 to 400%
99,
152
200%
0 to 200%,
9999
152
9999
0 to 280%
152
200%
HD rated
263
current
*1
0 to 280%
182
9999
0 to 280%
182
9999
0 to 280%
152
200%
0 to 280%
152
200%
0 to 280%
152
250%
0 to 280%
252
200%
157
4