sh030051g.pdf - 第228页

11 - 23 11. OPTIONS AND AUXILI ARY EQUIPMENT (b) Losses of servo motor and servo amp lifier in regenerative mode The following table lists the efficiencies and other da ta of the servo motor and servo amplifier in the re…

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11 - 22
11. OPTIONS AND AUXILIARY EQUIPMENT
(2) Selection of the regenerative option
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 option.
(a) Regenerative energy calculation
Use the following table to calculate the regenerative energy.
M
Friction
torque
U
n
b
a
l
a
n
c
e
t
o
r
q
u
e
TF
T
U
S
e
r
v
o
m
o
t
o
r
s
p
e
e
d
G
e
n
e
r
a
t
e
d
t
o
r
q
u
e
Time
Up
No
tf(1 cycle)
Down
( )
( )
(Driving)
(Regenerative)
Tpsd2
t2 t3 t4t1
T
psa2Tpsd1
T
psa1
1)
2)
3)
4)
5)
6)
7)
8)
Formulas for calculating torque and energy in operation
Regenerative power Torque applied to servo motor [N m] Energy [J]
1)
T
1
(J
L
J
M
)
9.55
10
4
N0
1
T
psa1
T
U
T
F
E
1
2
0.1047
N
0
T1 Tpsa1
2)
T
2
T
U
T
F
E
2
0.1047 N
0
T
2
t
1
3)
T
3
(JL JM)
9.55
10
4
N0
1
Tpsd1
TU TF
E
3
2
0.1047
N
0
T
3
T
psd1
4), 8)
T
4
T
U
E
4
0 (No regeneration)
5)
T5
(J
L
J
M
)
9.55
10
4
N0
1
Tpsa2
TU TF
E
5
2
0.1047
N
0
T5 Tpsa2
6)
T
6
T
U
T
F
E
6
0.1047 N
0
T
6
t
3
7)
T
7
(JL JM)
9.55
10
4
N0
1
Tpsd2
TU TF
E7
2
0.1047
N
0
T
7
T
psd2
From the calculation results in 1) to 8), find the absolute value (Es) of the sum total of negative energies.
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.
00
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)
FA
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.