Mitsubishi Electric MDS-B-SPJ2 Series Specification Manual page 38

2.4.3 Regenerative resistor
(1) "FCUA-RB Series" Regenerative Resistor
The regenerative resistor is not built into the spindle unit.
The following regenerative resistor must be installed.
Regenerative
resistor
model
FCUA-RB04
FCUA-RB075
FCUA-RB15
FCUA-RB22
FCUA-RB37
FCUA-RB55
FCUA-RB75/2
(Note 1) The FCUA-RB04/075 has ribs (grooves) 1.5mm deep and 1.5mm
wide on the top and bottom.
(Note 2) The FCUA-RB55/75/2 is installed with two installation points of
each side (total four points).
The installation pitch is 80.5mm.
Precautions for installation
(1) When using an operation pattern in which the regenerative resistor is used at a high
frequency, the surface of the resistor may exceed 300°C, so take care to the installation and
the heat radiation. Do not install the resistor where it can be easily touched by hand or body
parts as touching could lead to burns. Install a well-ventilated protective cover (punched metal,
etc.) if body parts might come in contact.
(2) Installation of the regenerative resistor on a metallic surface outside the panel is
recommended to improve the heat radiating effect.
(3) Install the regenerative resistor so that the section where the lead wires are led out is not at
the top of the resistor.
2. Specifications
A± 2
B± 1
C
Mod el d isplay
Toler- Outline dimensions (mm)
ance
A B C
(W)
60 140 125 100 40
80 215 200 175 40
120 240 225 200 50
155 215 200 175 60
185 335 320 295 60
380 400 385 360 80
380 400 385 360 80
2 − 17
500 +20
- 0
2-FN2-M4
2-Silicon rubber glass braided wires
2.0m m 2 (white)
D
Installation Remarks
D E F
20 2.5 2 points
20 2.5 2 points
25 2.0 2 points
30 2.5 2 points
30 2.5 2 points
40 2.5 4 points
40 2.5 4 points
φ 4.3mm
Note 1
Note 2