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9.CHARACTERISTICS
9-2 Losses generated in the servo amplifier
(1) Amount of heat generated by the servo amplifier
Table 9-1 indicates servo amplifiers' power supply capacities and losses generated under rated
load. For thermal design of an enclosure, use the values in Table 9-1 in consideration for the
worst operating conditions. The actual amount of generated heat will be intermediate between
values at rated torque and zero torque according to the duty used during operation. When the
servo motor is run at less than the maximum speed, the power supply capacity will be smaller
than the value in the table, but the servo amplifier's generated heat will not change.
Table 9-1 Power Supply Capacity and Generated Heat Per Servo Amplifier at Rated Output
Servo Amplifier
Servo Motor
HC-MF053·13
MR-J2-10A(1)
HA-FF053·13
HC-UF13
HC-MF23
MR-J2-20A(1)
HA-FF23
HC-UF23
HC-MF43
HA-FF33
MR-J2-40A(1)
HA-FF43
HC-UF43
HA-FF63
MR-J2-60A
HC-SF52
HC-SF53
HC-MF73
MR-J2-70A
HC-UF72·73
HC-SF81
MR-J2-100A
HC-SF102·103
HC-SF121
HC-SF201
HC-SF152·153
MR-J2-200A
HC-SF202·203
HC-RF103
HC-RF153
HC-UF152
HC-SF301
HC-SF352·353
MR-J2-350A
HC-RF203
HC-UF202
Note: 1. Note that the power supply capacity will vary according to the power supply impedance.
2. Heat generated during regeneration is not included in the servo amplifier-generated heat.
To calculate heat generated by the regenerative brake option, use Equation 6-1 in Sec-
tion 6-1-1.
(Note 2) Servo Amplifier-Generated Heat Area Required for
(Note 1) Power
Supply
At rated torque
Capacity [kVA]
0.3
0.3
0.3
0.5
0.5
0.5
0.9
0.7
0.9
0.9
1.1
1.0
1.0
1.3
1.3
1.7
1.7
2.1
3.5
2.5
3.5
1.7
2.5
2.5
4.8
5.5
3.5
3.5
9– 4
With servo off
[W]
[W]
25
15
25
15
25
15
25
15
25
15
25
15
35
15
35
15
35
15
35
15
40
15
40
15
40
15
50
15
50
15
50
15
50
15
90
20
90
20
90
20
90
20
90
20
90
20
90
20
120
20
130
20
90
20
90
20
Heat Dissipation
2
[m
2
]
[ft
]
0.5
5.4
0.5
5.4
0.5
5.4
0.5
5.4
0.5
5.4
0.5
5.4
0.7
7.5
0.7
7.5
0.7
7.5
0.7
7.5
0.8
8.6
0.8
8.6
1.0
10.8
1.0
10.8
1.0
10.8
1.0
10.8
1.0
10.8
1.8
19.4
1.8
19.4
1.8
19.4
1.8
19.4
1.8
19.4
1.8
19.4
1.8
19.4
2.7
29.1
2.7
29.1
1.8
19.4
1.8
19.4
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