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12. OPTIONS AND AUXILIARY EQUIPMENT
For the MR-RB50 MR-RB51 install the cooling fan as shown.
82.5 40 (1.58)
82.5
133
Fan installation screw hole dimensions
2-M3 screw hole
(for fan installation)
Depth 10 or less
(Screw hole already
machined)
Recommended fan:
Toyo Denki's TL396A or equivalent
Fan Terminal block
Thermal relay
Installation surface
Horizontal installation
Vertical
installation
Top
Bottom
(3.25)
(5.24)
(3.25)
[Unit : mm(in)]
(c) MR-J2S-11KB to MR-J2S-22KB (when using the supplied regenerative brake resistor)
When using the regenerative brake 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 brake
resistors burn. Install the resistors at intervals of about 70mm. Cooling the resistors with fans
(1.0m
3
/min, 92 ( about two fans) improves the regeneration capability. In this case, set "0E "
in parameter No. 2.
P
C
Servo amplifier
(Note) Series connection
Fan
P
1
Do not remove
the short bar.
5m or less
Note: The number of resistors connected in series depends on the resistor type. Install a thermal sensor
or like to configure a circuit that will shut off the main circuit power at abnormal overheat.
Regenerative Power [W]
Servo Amplifier
Regenerative
Brake Resistor
Normal Cooling
Resistance
[
]
Number of
Resistors
MR-J2S-11KB GRZG400-2 500 800 8 4
MR-J2S-15KB GRZG400-1 850 1300 5 5
MR-J2S-22KB GRZG400-0.8 850 1300 4 5