General Information Regarding the Wiring
USB
The USB cable must have a maximum length of 5 m according to the USB regu-
lations. We recommend high-quality cables with integrated ferrite cores (available at
SIEB & MEYER).
Note
Trouble-free USB communication is also highly dependent on the quality of the USB in-
terface at the used PC/laptop.
RJ45
Use only high-quality RJ45 cables.
Low priced RJ45 cables can damage the female RJ45 connector. The dimensions of
the cable connectors deviate frequently from the standard dimensions. Thus, they cause
problems with the electrical contact after only few connecting cycles.
10.2.3 Cables for the Rotor Position Detection
Use shielded lines and shielded D-sub shells for wiring the different measuring systems.
Connect the cable shield to both connector shells: At the drive connect the shield to the
D-sub shell and at the motor to the shell of the measuring system connector.
Examples for the use of conductors:
▶ Motors with resolver
LIYCY 3 x 2 x 0.14 or 4 x 2 x 0.14 for motors with integrated thermal contact. Con-
ductors: shielded, twisted in pairs. Twist mode: sine/sine, cosine/cosine, rotor/rotor
and, if necessary, thermal contact/thermal contact.
For delicate applications we recommend additional shielding of the separate pairs.
▶ Motors with incremental encoder
LIYCY 5 x 0.14 or 7 x 0.14 for motors with integrated thermal contact.
▶ Motors with Hall sensors and tachometer generator
LIYCY 9 x 0.14 or 12 x 0.14 for motors with integrated thermal contact.
10.2.4 Cables for the External Ballast Resistor
The cables of the external ballast resistor of R
EX
and +UB must be twisted. If the cable
is longer than 20 cm a shielded cable must be used.
98 Drive System SD2M - Hardware Description 036228xxF
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