6.3
Connection technique
6.3.1
Power connection
General
Motor destruction by direct connection to the
50/60 Hz power grid (three-wire or single-
phase power supply)!
CAUTION
The motors described here can only be operated with suitable drive control‐
lers with variable output voltage and frequency (converter mode) as specified
by Rexroth.
The stators in standard design are provided with an approx. 1.5m long con‐
nection strand (single wires within a protective conduit). The connection
strand consists of three power wires or three power wire pairs and two up to
six wire pairs for the cold conductors in the winding head.
D
Diameter of connection strand
Fig. 6-2:
1MS Connection strand
Wire designation in connection
strand
At cross-sections exceeding 10 mm², the power wires in the connection
strand of the motor are marked with U-V-W.
Smaller power wire cross-sections can be color-coded:
●
U = Yellow (YE)
●
V = Green (GN)
●
W = Blue (BU)
For the designation of the temperature sensors refer to
Connection wires in connection
strand
The connection strand is a motor-internal connection. For this reason, the in‐
sulation of the connection strand is designed for higher temperatures than the
power cables (connection between stator and controller). For this reason, the
minimum cross-sections for power wires specified in the motor data sheet
may deviate from the power wire cross-sections in the connection strand
specified below.
The cross-section of the conductor pairs of the temperature sen‐
sors is AWG 22 (KTY84) or 0.5 mm² (NTC and bimetal).
1MB Asynchronous Spindle Motors
27/53
Assembly
R911337309_Edition 03 Bosch Rexroth AG
Содержание Rexroth 1MB
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