Instruction manual

Characteristics Specifications
MELSERVO J2-Super 10 - 1
10 Specifications
10.1 Characteristics
10.1.1 Load diagram
An electronic thermal relay is built into the servo amplifier to protect the servo motor and servo
amplifier from overloads. The working diagrams for load monitoring are presented in the
following figures. Overload 1 alarm (50) occurs if overload operation performed is above the
electronic thermal relay protection curve. Overload 2 alarm (51) occurs if the maximum current
flowed continuously for several seconds due to machine collision, etc. In the diagrams the area
underneath the solid or dotted lines represents the normal working range. The dotted line
represents the load curve when the servo motor has stopped. In a machine like the one for
vertical lift application where unbalanced torque will be produced, it is recommended to use the
machine so that the unbalanced torque is 70% or less of the rated torque.
S000932C
Fig. 10-1: Load diagrams MR-J2S-10B to MR-J2S-100B, MR-J2S-60B4 and MR-J2S-100B4
S000933C
Fig. 10-2: Load diagrams MR-J2S-200B, MR-J2S-350B, MR-J2S-200B4 and MR-J2S-350B4
0,1
1
10
100
1000
0 50 100 150 200 250 30
Load ratio [%]
Operation time [s]
HC-KFS
HC-MFS
HC-SFS
Rotation
Servo lock
0,1
1
10
100
1000
0 50 100 150 200 250 30
Load ratio [%]
Operation time [s]
HC-SFS
HC-RFS
Rotation
Servo lock