14. USING A LINEAR SERVO MOTOR
14 - 30
14.4 Characteristics
14.4.1 Overload protection characteristics
An electronic thermal is built in the servo amplifier to protect the linear servo motor, servo amplifier and
linear 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. 14.2. [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-side area of the continuous or broken
line in the graph.
Use the linear servo motor with 70% or less of the effective load ratio when it is in the servo lock state or in a
small reciprocating motion.
This servo amplifier has solid-state linear 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.)
1000
100
10
1
0.1
0
50
150
200
250
300
100
Operation time [s]
Load ratio [%]
Servo-lock
Operating
1000
100
10
1
0.1
0
200
300
400
100
Operation time [s]
Load ratio [%]
Operating
Servo-lock
a. LM-H3 series
LM-K2 series
b. LM-U2 series
1000
100
10
1
0.1
0
100
300
400
500
600
200
Operation time [s]
Load ratio [%]
Operating
Servo-lock
1000
100
10
1
0.1
0
50
150
200
250
300
100
Operation time [s]
Load ratio [%]
Operating
Servo-lock
c. LM-F series (natural cooling)
d. LM-F series (liquid cooling)
Fig. 14.2 Electronic thermal protection characteristics
Summary of Contents for MR-J4-100B(-RJ)
Page 17: ...8 MEMO ...
Page 143: ...4 STARTUP 4 20 MEMO ...
Page 199: ...5 PARAMETERS 5 56 MEMO ...
Page 227: ...6 NORMAL GAIN ADJUSTMENT 6 28 MEMO ...
Page 281: ...8 TROUBLESHOOTING 8 16 MEMO ...
Page 303: ...9 DIMENSIONS 9 22 MEMO ...
Page 319: ...10 CHARACTERISTICS 10 16 MEMO ...
Page 429: ...11 OPTIONS AND PERIPHERAL EQUIPMENT 11 110 MEMO ...
Page 435: ...12 ABSOLUTE POSITION DETECTION SYSTEM 12 6 MEMO ...
Page 483: ...14 USING A LINEAR SERVO MOTOR 14 34 MEMO ...
Page 531: ...16 FULLY CLOSED LOOP SYSTEM 16 26 MEMO ...
Page 613: ...17 APPLICATION OF FUNCTIONS 17 82 MEMO ...
Page 654: ...APPENDIX App 41 ...