Mitsubishi Electric FR-F800, Instruction Manual

Page: 230 / 834

(E) Environment setting parameters Parameters
5 - 68
5.4.10 Multiple rating setting
Two rating types of different rated current and permissible load can be selected. The optimal inverter
rating can be chosen in accordance with the application, enabling equipment size to be reduced.
Changing the parameter initial values and setting ranges
●
When inverter reset and all parameter clear are performed after setting Pr. 570, the parameter
initial values are changed according to each rating, as shown below.
The rated current and motor capacity differ depending on the inverter capacity. Refer to the
inverter rated specifications (page 8-1).
Pr. Name
Initial value
Setting
range
Description (overload current rating,
surrounding air temperature)
FM CA
570
E301
Multiple rating setting 1 0
0
SLD rating
110% 60 s, 120% 3 s (inverse-time
characteristics)
Surrounding air temperature 40 °C
1
LD rating
120% 60 s, 150% 3 s (inverse-time
characteristics)
Surrounding air temperature 50 °C
Pr. Name
Pr. 570 setting
Refer to
0 1
9 Electronic thermal O/L relay SLD rated current LD rated current 5-145
22 Stall prevention operation level 110% 120% 5-175
48 Second stall prevention operation level 110% 120% 5-175
56 Current monitoring reference SLD rated current LD rated current 5-206
148 Stall prevention level at 0 V input 110% 120% 5-175
149 Stall prevention level at 10 V input 120% 150% 5-175
150 Output current detection level 110% 120% 5-238
165 Stall prevention operation level for restart 110% 120% 5-409
557
Current average value monitor signal output
reference current
SLD rated current LD rated current 5-94
874 OLT level setting 110% 120% 5-175
893 Energy saving monitor reference (motor capacity)
SLD rated motor
capacity
LD rated motor
capacity
5-57
Tab. 5-26: Influence of Pr. 570 on other parameters
NOTES When Pr. 570 = "0" (SLD rating), carrier frequency automatic reduction is enabled regardless of the
setting in Pr. 260 "PWM frequency automatic switchover".
Parameters referred to
Pr. 260 PWM frequency automatic switchover => page 5-85