sh030051g.pdf - 第234页

11 - 29 11. OPTIONS AND AUXILI ARY EQUIPMENT (d) MR-J3-11KB(4)-PX to MR-J3-22KB(4)- PX (when using the regenerative option) The MR-J3-11KB(4)-PX to MR-J3-22KB(4)-PX servo amplifiers are not supplied with regenerative res…

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11 - 28
11. OPTIONS AND AUXILIARY EQUIPMENT
(c) MR-J3-11KB(4) to MR-J3-22KB(4) (when using the supplied regenerative resistor)
CAUTION
The regenerative resistor supplied with 11 kW to 22 kW servo amplifiers does not
have a protect cover. Touching the resistor (including wiring/screw hole area) may
cause a burn injury and electric shock. Even if the power was shut-off, be careful
until the bus voltage discharged and the temperature decreased because of the
following reasons.
It may cause a burn injury due to very high temperature without cooling.
It may cause an electric shock due to charged capacitor of the servo amplifier.
When using the regenerative resistors supplied to the servo amplifier, the specified number of resistors
(4 or 5 resistors) must be connected in series. If they are connected in parallel or in less than the
specified number, the servo amplifier may become faulty and/or the regenerative resistors burn. Install
the resistors at intervals of about 70mm. Cooling the resistors with two cooling fans (92
92, minimum
air flow : 1.0m
3
) improves the regeneration capability. In this case, set " FA" in parameter No.PA02.
Coolin
g
fan
P
C
Servo amplifie
r
(Note) Series connection
P
1
Do not remove
the short bar.
5m or less
Note. The number of resistors connected in series depends on the resistor type. The thermal sensor is not mounted on the
attached regenerative resistor. An abnormal heating of resistor may be generated at a regenerative circuit failure. Install a
thermal sensor near the resistor and establish a protective circuit to shut off the main circuit power supply when abnormal
heating occurs. The detection level of the thermal sensor varies according to the settings of the resistor. Set the thermal
sensor in the most appropriate position on your design basis or use the thermal sensor built-in regenerative option (MR-
RB5E, 9P, 9F, 6B-4, 60-4 and 6K-4) provided by Mitsubishi Electric Corporation.
Servo amplifier
Regenerative
resistor
Regenerative power [W]
Resistance
[
]
Number of
resistors
Normal Cooling
MR-J3-11KB GRZG400-1.5 500 800 6 4
MR-J3-15KB GRZG400-0.9 850 1300 4.5 5
MR-J3-22KB GRZG400-0.6 850 1300 3 5
MR-J3-11KB4 GRZG400-5.0 500 800 20 4
MR-J3-15KB4 GRZG400-2.5 850 1300 12.5 5
MR-J3-22KB4 GRZG400-2.0 850 1300 10 5
11 - 29
11. OPTIONS AND AUXILIARY EQUIPMENT
(d) MR-J3-11KB(4)-PX to MR-J3-22KB(4)-PX (when using the regenerative option)
The MR-J3-11KB(4)-PX to MR-J3-22KB(4)-PX servo amplifiers are not supplied with regenerative
resistors. When using any of these servo amplifiers, always use the MR-RB5E, 9P, 9F, 6B-4, 60-4 and
6K-4 regenerative option.
The MR-RB5E, 9P, 9F, 6B-4, 60-4 and 6K-4 are regenerative options that have encased the GRZG400-
1.5
, GRZG400-0.9 , GRZG400-0.6 , GRZG400-5.0 , GRZG400-2.5 , GRZG400-2.0 respectively.
When using any of these regenerative options, make the same parameter setting as when using the
GRZG400-1.5
, GRZG400-0.9 , GRZG400-0.6 , GRZG400-5.0 , GRZG400-2.5 , GRZG400-2.0
(supplied regenerative resistors or regenerative option is used with 11kW or more servo amplifier).
Cooling the regenerative option with cooling fans improves regenerative capability.
The G3 and G4 terminals are for the thermal protector. G3-G4 is opened when the regenerative option
overheats abnormally.
G3
G4
C
P
C
P
P
1
Servo amplifier
Do not remove
the short bar.
Configure up a circuit which
shuts off main circuit power
when thermal protector operates.
(Note)
Regenerative option
Note. Specifications of contact across G3-G4
Maximum voltage : 120V AC/DC
Maximum current : 0.5A/4.8VDC
Maximum capacity : 2.4VA
Servo amplifier
Regenerative option
model
Resistance [ ]
Regenerative power [W]
Without
cooling fans
With
cooling fans
MR-J3-11KB-PX MR-RB5E 6 500 800
MR-J3-15KB-PX MR-RB9P 4.5 850 1300
MR-J3-22KB-PX MR-RB9F 3 850 1300
MR-J3-11KB4-PX MR-RB6B-4 20 500 800
MR-J3-15KB4-PX MR-RB60-4 12.5 850 1300
MR-J3-22KB4-PX MR-RB6K-4 10 850 1300
When using cooling fans, install them using the mounting holes provided in the bottom of the
regenerative option. In this case, set "
FA" in parameter No.PA02.
Mounting screw
4-M3
(92 92, minimum air flow: 1.0m
3
)
MR-RB5E 9P 9F 6B-4 60-4 6K-4
Top
Bottom
TE1
G4 G3 C P
TE
2 cooling fans
11 - 30
11. OPTIONS AND AUXILIARY EQUIPMENT
(5) Outline drawing
(a) MR-RB032
MR-RB12
[Unit: mm (in)]
LA
5
LB
TE1
6
6
1
5
6
1
6
8
1
4
4
1
2
A
p
p
r
o
x
.
6
A
p
p
r
o
x
.
1
2
Approx. 20
LD
1.6
LC
G3
G4
P
C
6 mounting hole
MR-RB
TE1
Terminal block
G3
G4
P
C
Terminal screw: M3
Tightening torque: 0.5 to 0.6 [N
m]
(4 to 5 [lb
in])
Mounting screw
Screw size: M5
Tightening torque: 3.24 [N
m]
(28.7 [lb
in])
Regenerative
option
Variable dimensions Mass
LA LB LC LD [kg] [lb]
MR-RB032 30 15 119 99 0.5 1.1
MR-RB12 40 15 169 149 1.1 2.4