14.OPTIONS AND AUXILIARY EQUIPMENT

(b)To make selection according to regenerative energy

Use the following method when regeneration occurs continuously in vertical motion applications or when it is desired to make an in-depth selection of the regenerative brake option:

a.Regenerative energy calculation

Use the following table to calculate the regenerative energy.

M

Friction torque

TF

TU

Unbalance torque

Servomotorspeed

(

)

Generatedtorque

(

)

 

tf(1 cycle)

 

 

Up

N0

 

 

 

 

 

 

 

Down

Time

 

 

 

t1

t2

t3

t4

Tpsa1

Tpsd1

Tpsa2

Tpsd2

1)

(Driving)

4)

 

8)

2)

5)

 

 

 

 

 

 

 

 

 

 

6)

3)

 

 

7)

(Regenerative)

 

Formulas for calculating torque and energy in operation

Regenerative power

Torque applied to servo motor [N

m]

 

 

 

 

 

 

 

 

 

 

Energy [J]

 

 

1)

T1

 

 

 

(JL

JM)

N0

1

 

 

 

TU

TF

E1

 

 

 

 

0.1047

 

 

N0

T1

 

Tpsa1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9.55

104

 

 

 

 

Tpsa1

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2)

T2

 

 

 

TU

TF

 

 

 

 

 

 

 

 

 

 

 

E2

 

 

 

0.1047

 

N0

T2

 

t1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3)

T3

 

 

 

(JL

JM)

N0

1

 

 

 

TU

TF

E3

 

 

 

 

0.1047

 

 

N0

T3

Tpsd1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9.55

104

 

 

 

 

Tpsd1

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

4), 8)

T4

 

 

 

TU

 

 

 

 

 

 

 

 

 

 

 

 

E4

 

 

 

0 (N0 regeneration)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5)

T5

 

 

 

(JL

JM)

N0

 

 

1

 

 

 

TU

TF

E

5

 

 

 

 

 

0.1047

 

 

N

0

T

5

T

psa2

9.55

104

 

 

 

 

Tpsa2

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6)

T6

 

 

 

TU

TF

 

 

 

 

 

 

 

 

 

 

 

E6

 

 

 

0.1047

 

N0

T6

 

t3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7)

T7

 

 

 

(JL

JM)

N0

1

 

 

 

TU

TF

E7

 

 

 

 

0.1047

 

 

N0

T7

Tpsd2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9.55

104

 

 

 

 

Tpsd2

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

From the calculation results in 1) to 8), find the absolute value (Es) of the sum total of negative energies.

b. Losses of servo motor and servo amplifier in regenerative mode

The following table lists the efficiencies and other data of the servo motor and servo amplifier in the regenerative mode.

Servo amplifier

Inverse efficiency[%]

Capacitor charging[J]

MR-J2S-10CL (1)

55

9

MR-J2S-20CL (1)

70

9

MR-J2S-40CL (1)

85

11

MR-J2S-60CL

85

11

MR-J2S-70CL

80

18

MR-J2S-100CL

80

18

MR-J2S-200CL

85

40

MR-J2S-350CL

85

40

MR-J2S-500CL

90

45

MR-J2S-700CL

90

70

Inverse efficiency ( )

:Efficiency including some efficiencies of the servo motor and servo

 

amplifier when rated (regenerative) torque is generated at rated speed.

 

Since the efficiency varies with the speed and generated torque, allow for

 

about 10%.

Capacitor charging (Ec)

:Energy charged into the electrolytic capacitor in the servo amplifier.

 

14 - 2

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Mitsubishi Electronics MR-J2S- CL specifications 1047, Servo amplifier Inverse efficiency% Capacitor chargingJ
Page 254 Page 256

MR-J2S- CL specifications

Mitsubishi Electronics has long been a pioneer in automation and control technology, and one of its prominent offerings is the MR-J2S-CL servo amplifier. Designed to enhance the performance of servo motors, the MR-J2S-CL is a critical component in various applications, ranging from industrial machinery to robotics.

One of the standout features of the MR-J2S-CL is its high-performance control capabilities. This servo amplifier supports both position and speed control, enabling precise movement and responsiveness in dynamic applications. The MR-J2S-CL boasts a sophisticated control algorithm that ensures superior torque response, making it ideal for applications that require quick and accurate motion control.

The MR-J2S-CL employs advanced features such as the Auto-Tuning function, which automatically adjusts the servo settings to optimize performance for the specific load conditions. This automation simplifies setup processes and reduces downtime, allowing users to quickly configure the system to their needs.

In terms of connectivity, the MR-J2S-CL is equipped with various communication options, including the CC-Link and Mitsubishi's own MELSEC communications. These options facilitate seamless integration with other devices and control systems, enhancing the overall interoperability of factory automation setups.

Another critical aspect of the MR-J2S-CL is its built-in safety features. The amplifier includes functionalities like safe torque off (STO) and overcurrent protection, which contribute to the overall safety of the operation. These safety measures are essential in reducing the risk of accidents in environments where human interaction occurs alongside machinery.

The MR-J2S-CL is designed with durability and reliability in mind. It has a robust construction that is capable of withstanding harsh industrial environments, including high temperatures and dust exposure. This resilience ensures a long service life, reducing maintenance needs and operational costs.

Furthermore, the MR-J2S-CL is compatible with a wide range of Mitsubishi servo motors, making it a versatile choice for various applications. Its comprehensive capabilities, combined with user-friendly interface options, allow for easy programming and monitoring of performance.

In summary, the Mitsubishi Electronics MR-J2S-CL servo amplifier stands out for its high-performance control, advanced safety features, and robust design. It effectively meets the demands of various industrial applications, making it a valuable asset in modern automation and manufacturing environments. With its blend of precision, reliability, and flexibility, the MR-J2S-CL continues to be a preferred choice for engineers and manufacturers alike.
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