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CHAPTER 3 - Installation of the drive
3.2.2 Electrical installation
The electrical installation consists of the connection to "motor & sensors" (see paragraph
1.2.5) of the following:
a) inside the connection box of the servomotor:
a1) power supply cables of the servomotor, coming from the convertor
a2) supply cables of the brake (only if this option has been chosen);
a3) connection of the thermal contact (only if it is employed);
b) to the connector mounted on the connection box of the servomotor:
connections to the resolver.
Connections, convertor side, are described in paragraphs 4.3 and 4.4 of this manual; it is
important to remember that it is also important to respect scrupulously what described in
paragraph 3.3 "Guidelines on the application of Electromagnetic compatibility".
Fig. 3-5 shows the drawing of the connection box of servomotors SERIES 861 and Fig. 3-6
the drawing of the connection box of servomotors SERIES 864 and 865.
A kit of nuts and washers of a type suitable for all kinds of connection screws is supplied
inside the connection box for the connection of cables.
3.2.2.1 Power supply connections of the servomotor
The power supply cables to the motor, of a section adequate to nominal current (see Table
4/1 in paragraph 4.4.1 in this respect), must be connected to the terminals marked with the
letters U, V and W. For servomotors SERIES 864 and 865, the terminal marked with A (Fig.
3-6) must not be connected.
CAUTION
It is necessary to respect the correspondence of the connections between
motor and convertor without fail. A mistake in phase connection will not
make drive operation possible.
The yellow-green connection cable between the ground of the motor and the ground of the
convertor must be connected to the terminal marked with the symbol
For these connections, a shielded power cable or (see paragraph 3.3) cables contained in
metal shields can be used. In any case, the external shield must be connected to the ground
of the motor; it can be useful to employ the extra M5 tapped hole, outside the connection box
and marked by the symbol
Cables must be inserted in the box through the hole PG21 with the use of a suitable cable
gland.
3.2.2.2 Connections to the resolver
On the connection box of the motor there is a suitable 12-pin connector, 7 of which are used
(see Fig. 3-5 and Fig. 3-6). For the connection of the resolver between "motor & sensors"
(see paragraph 1.2) and convertor prepared standardized cables are available, equipped
with connector both on motor side and on convertor side. Such cables can be purchased
together with the drive, by specifying the code, according to the length needed (see Table
3/2).
Table 3/2
Length [m]
2
2,5
5
10
15
20
25
30
MANIU04.9607 GB 03/97
Code
BRS5CBSGN2L02XX
BRS5CBSGN2L52XX
BRS5CSSGN5L02XX
BRS5CSSGNL102XX
BRS5CBSGNL1S2XX
BRS5CBSGNL202XX
BRS5CBSGNL252XX
BRS5CBSGNL302XX
.
NOTE: In position 13 of the code the type of
connector motor side is indicated:
2 -connectort ype MS 3106A18 1S
4 - connector type CONNEI /
CONINVERS.
Cabling diagrams are available on request.
Page 3.6
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