Mitsubishi Electric 800 Series Instruction Manual page 168

5.4.8 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.
Pr. Name
570 Multiple rating setting
E301
 Overload current rating and surrounding air temperature
• The overload current rating of the inverter can be changed by the Pr.570 setting.
Pr.570 Rating
setting
0 SLD 110% 60 s, 120% 3 s (inverse-time characteristics)
1 LD 120% 60 s, 150% 3 s (inverse-time characteristics)
*1 30°C for the FR-F860-00090 or lower.
 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.
Pr. Name
9 Electronic thermal O/L relay
22 Stall prevention operation level
48 Second stall prevention operation level
56 Current monitoring reference
148 Stall prevention level at 0 V input
149 Stall prevention level at 10 V input
150 Output current detection level
165 Stall prevention operation level for restart
557 Current average value monitor signal output
reference current
874 OLT level setting
*1 The rated current and motor capacity differ depending on the inverter capacity. Refer to the inverter rated specifications
NOTE
• 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
Initial value
0
Overload current rating
SLD rated current
110%
110%
SLD rated current
110%
120%
110%
110%
SLD rated current
110%
page 179
Setting range Description (overload current rating,
surrounding air temperature)
0 SLD rating
1 LD rating
Surrounding air temperature
FR-F860-01080 or lower
*1
40°C
40°C
Pr.570 setting
0 1
*1
LD rated current
120%
120%
*1
LD rated current
120%
150%
120%
120%
*1
LD rated current
120%
5.4 (E) Environment setting parameters
FR-F860-01440 or higher
40°C
50°C
Refer to
page
*1 230
257
257
284
*1
257
257
307
448
*1 187
257
(page 612).
167
5. PARAMETERS
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