Mitsubishi Electric FR-E720-0.1K Instruction Manual page 59

 Environment
Ambient Temperature
Humidity
Maximum Altitude
 For branch circuit protection, select an appropriate UL and cUL listed fuse with a cut-off speed of Class T, Class J, Class
CC, or faster, or a UL 489 molded case circuit breaker (MCCB) in accordance with the following table.
FR-E720-K
Rated fuse voltage(V)
Without power factor
improving reactor
Fuse allowable
rating (A)
With power factor
improving reactor
Molded case circuit breaker (MCCB)
Maximum allowable rating (A) , 
FR-E740-K
Rated fuse voltage(V)
Without power factor
improving reactor
Fuse allowable
rating (A)
With power factor
improving reactor
Molded case circuit breaker (MCCB)
Maximum allowable rating (A) , 
FR-E720S-K
Rated fuse voltage(V)
Without power factor
Fuse allowable improving reactor
rating (A)
With power factor
improving reactor
Molded case circuit breaker (MCCB)
Maximum allowable rating (A) , 

Maximum allowable rating by US National Electrical Code. Exact size must be chosen for each installation.

Select an appropriate molded case circuit breaker with a rating that is suitable for the size of the cable.
 When using the electronic thermal relay function as motor overload protection, set the rated motor current to Pr. 9
"Electronic thermal O/L relay".
Electronic thermal relay function operation characteristic
Pr. 9 = 50% setting of inverter rating∗1, 2
70
30Hz
or more ∗3
20Hz
60
10Hz
6Hz
0.5Hz
50
240
180
120
60
105%
52.5%
50
Inverter output current(%)
(% to the inverter rated current)
 Short circuit ratings
200V class
•
Suitable for use in a circuit capable of delivering not more than 5kA rms symmetrical amperes, 264V maximum.
400V class
•
Suitable for use in a circuit capable of delivering not more than 5kA rms symmetrical amperes, 528V maximum.
55
Running
-10°C to +50°C
90% RH or less
1000m
0.1 0.2 0.4
15 15 15
15 15 15
15 15 15
0.4 0.75 1.5
6 10 15
6 10 10
15 15 15
0.1 0.2 0.4
240V or more
15 20 20
15 20 20
15 15 15
Pr. 9 = 100% setting of inverter rating∗2
30Hz or more ∗3
20Hz
Operation range
10Hz
Range on the right of characteristic curve
6Hz Non-operation range
Range on the left of characteristic curve
0.5Hz
Characteristic when electronic thermal
relay function for motor protection is turned off
(when Pr. 9 setting is 0(A))
Range for
transistor
protection
100
150 230
In Storage During Transportation
-20°C to +65°C -20°C to +65°C
90% RH or less 90% RH or less
1000m
0.75 1.5 2.2 3.7 5.5
240V or more
20 30 40 60 70
20 20 30 50 60
15 20 25 40 60
2.2 3.7 5.5 7.5 11
480V or more
20 30 40 70 80
15 25 35 60 70
15 20 30 40 50
0.75 1.5 2.2
30 40 60
20 30 50
20 25 40
This function detects the overload (overheat)
of the motor, stops the operation of the
inverter's output transistor, and stops the
output. (The operation characteristic is shown
on the left.)
• When using the Mitsubishi Electric
constant-torque motor
1) Set "1" or any of "13" to "16", "50", "53",
2) Set the rated current of the motor in Pr. 9.



10000m
7.5 11 15
80 150 175
70 125 150
80 110 150
15
90
90
70
"54" in Pr. 71. (This provides a 100%
continuous torque characteristic in the
low-speed range.)
When a value 50% of the inverter rated output
current (current value) is set in Pr. 9
The % value denotes the percentage to the
inverter rated output current. It is not the
percentage to the motor rated current.
When you set the electronic thermal relay
function dedicated to the Mitsubishi Electric
constant-torque motor, this characteristic curve
applies to operation at 6Hz or higher.
(For selection of the operation characteristic,
refer to Chapter 4 of the FR-E700 Instruction
Manual.)