sh030051g.pdf - 第229页

11 - 24 11. OPTIONS AND AUXILI ARY EQUIPMENT The following are setting values for regenerative re sistor and regenerative option which are used with a servo amplifier of 11k to 22kW. Regenerative resistor, regenerative o…

11 - 23

11. OPTIONS AND AUXILIARY EQUIPMENT

(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] Servo amplifier Inverse efficiency[%] Capacitor charging[J]

MR-J3-10B 55 9 MR-J3-200B 85 40

MR-J3-10B1 55 4 MR-J3-200B4 85 25

MR-J3-20B 70 9 MR-J3-350B 85 40

MR-J3-20B1 70 4 MR-J3-350B4 85 36

MR-J3-40B 85 11 MR-J3-500B(4) 90 45

MR-J3-40B1 85 10 MR-J3-700B(4) 90 70

MR-J3-60B(4) 85 11 MR-J3-11KB(4) 90 120

MR-J3-70B 80 18 MR-J3-15KB(4) 90 170

MR-J3-100B 80 18 MR-J3-22KB(4) 90 250

MR-J3-100B4 80 12

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.

Subtract the capacitor charging from the result of multiplying the sum total of regenerative energies by

the inverse efficiency to calculate the energy consumed by the regenerative option.

ER [J]

Es Ec

Calculate the power consumption of the regenerative option on the basis of single-cycle operation

period tf [s] to select the necessary regenerative option.

PR [W]

ER/tf

(3) Parameter setting

Set parameter No.PA02 according to the option to be used.

Selection of regenerative option

00: Regenerative option is not used

For servo amplifier of 100W, regenerative resistor is not used.

For servo amplifier of 200 to 7kW, built-in regenerative resistor is used.

Supplied regenerative resistors or regenerative option is used with

the servo amplifier of 11k to 22kW.

For a drive unit of 30kW or more, select regenerative option by the

converter unit.

01: FR-BU2-(H) FR-RC-(H) FR-CV-(H)

02: MR-RB032

03: MR-RB12

04: MR-RB32

05: MR-RB30

06: MR-RB50(Cooling fan is required)

08: MR-RB31

09: MR-RB51(Cooling fan is required)

80: MR-RB1H-4

81: MR-RB3M-4(Cooling fan is required)

82: MR-RB3G-4(Cooling fan is required)

83: MR-RB5G-4(Cooling fanis required)

84: MR-RB34-4(Cooling fanis required)

85: MR-RB54-4(Cooling fanis required)

FA: Whenhe supplied regenerative resistor is cooled by the cooling fan to

increase the ability with the servo amplifier of 11k to 22kW.

Parameter No.PA02

11 - 24

11. OPTIONS AND AUXILIARY EQUIPMENT

The following are setting values for regenerative resistor and regenerative option which are used with a

servo amplifier of 11k to 22kW.

Regenerative resistor, regenerative option

Setting

value

Standard supplied regenerative resistor 00

Standard supplied regenerative resistor

(with a cooling fan to cool it)

MR-RB5E 00

MR-RB5E (with a cooling fan to cool it) FA

MR-RB9P 00

MR-RB9P (with a cooling fan to cool it) FA

MR-RB9F 00

MR-RB9F (with a cooling fan to cool it) FA

MR-RB6B-4 00

MR-RB6B-4 (with a cooling fan to cool it) 00

MR-RB60-4 FA

MR-RB60-4 (with a cooling fan to cool it) 00

MR-RB6K-4 FA

MR-RB6K-4 (with a cooling fan to cool it) 00

(4) Connection of the regenerative option

POINT

When the MR-RB50 MR-RB51 MR-RB3M-4 MR-RB3G-4 MR-RB5G-4

MR-RB34-4

MR-RB54-4 is used, a cooling fan is required to cool it.

The cooling fan should be prepared by the customer.

For the sizes of wires used for wiring, refer to section 11.11.

The regenerative option will cause a temperature rise of

100 relative to the ambient temperature. Fully

examine heat dissipation, installation position, used cables, etc. before installing the option. For wiring, use

flame-resistant wires and keep them clear of the regenerative option body. Always use twisted cables of

max. 5m length for connection with the servo amplifier.

11 - 25

11. OPTIONS AND AUXILIARY EQUIPMENT

(a) MR-J3-350B or less

MR-J3-200B4 or less

Always remove the wiring from across P-D and fit the regenerative option across P-C.

The G3 and G4 terminals act as a thermal sensor. G3-G4 is disconnected when the regenerative option

overheats abnormally.

Regenerative option

5m max.

Servo amplifier

Always remove the lead from across P-D.

(Note 2)

Cooling fan

(Note 1)

Note 1. When using the MR-RB50 MR-RB3M-4 MR-RB3G-4 MR-RB5G-4, forcibly cool it with a cooling fan (92 92, minimum air

flow : 1.0m

2. Make up a sequence which will switch off the magnetic contactor (MC) when abnormal heating occurs.

G3-G4 contact specifications

Maximum voltage: 120V AC/DC

Maximum current: 0.5A/4.8VDC

Maximum capacity: 2.4VA

For the MR-RB50

MR-RB3M-4 MR-RB3G-4 MR-RB5G-4 install the cooling fan as shown.

(for cooling fan installation)

Depth 10 or less

(Screw hole already

machined)

Cooling fan installation screw hole dimensions

82.5

133

2-M3 screw hole

Terminal block

Thermal relay

Installation surface

Horizontal installation

Vertical

installation

Top

Bottom

[Unit : mm]

Cooling fan