Mitsubishi MR-J4-40A User Manual

10. CHARACTERISTICS
10 - 1
10. CHARACTERISTICS
POINT
For the characteristics of the linear servo motor and the direct drive motor, refer
to sections 14.4 and 15.4.
10.1 Overload protection characteristics
An electronic thermal is built in the servo amplifier to protect the servo motor, servo amplifier and servo
motor power wires from overloads.
[AL. 50 Overload 1] occurs if overload operation performed is above the electronic thermal protection curve
shown in fig. 10.1 [AL. 51 Overload 2] occurs if the maximum current is applied continuously for several
seconds due to machine collision, etc. Use the equipment on the left-hand side area of the continuous or
broken line in the graph.
When unbalanced torque is generated, such as in a vertical lift machine, it is recommended that the
unbalanced torque of the machine be kept at 70% or less of the motor's rated torque.
This servo amplifier has solid-state servo motor overload protection. (The servo motor overload current (full
load current) is set on the basis of 120% rated current of the servo amplifier.)
The following table shows combinations of each servo motor and graph of overload protection
characteristics.
Rotary servo motor
HG-KR HG-MR HG-SR HG-UR HG-RR HG-JR
HG-JR
(at maximum torque
400%)
Graph of overload
protection
characteristics
053
13
053
13
72 Characteristics a
23
43
73
23
43
73
51
81
52
102
53
73
103
53 Characteristics b
121
201
152
202
301
352
152
202
103
153
203
153
203
353
73
103
153
203
Characteristics c
421
502
702
352
502
353
503
503
703
353
503
Characteristics d
903
11K1M
15K1M
22K1M
Characteristics e
524
1024
534
734
1034
534 Characteristics b
1524
2024
3524
1534
2034
3534
734
1034
1534
2034
Characteristics c
5024
7024
5034
7034
3534
5034
Characteristics d
9034
11K1M4
15K1M4
22K1M4
Characteristics e

Mitsubishi MR-J4-40A Specifications

General

Brand	Mitsubishi
Model	MR-J4-40A
Category	Amplifier
Language	English