Requirements to the motor cable
The maximum admissible length of the motor cable is 100 m. The capacity must not
exceed 5.2 nF.
Example: If the cable capacity is 0.26 nF per meter, the maximum admissible length of
the motor cable is 20 m.
11.2.2
Communication Cable
Please connect the communication interfaces only with high-quality cables according
to the relevant standards.
NOTICE
Ungrounded test setups
So-called "flying test systems" that are not or not sufficiently grounded can cause
damage to the communication interfaces or to the connected devices.
USB
The USB cable must have a maximum length of 5 m according to the USB regulations.
We recommend high-quality cables with integrated ferrite cores (available at
SIEB & MEYER).
Trouble-free USB communication is also highly dependent on the quality of
the USB interface 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.
11.2.3
Cables for the Rotor Position Detection
Use shielded lines and shielded Submin D shells for wiring the different measuring
systems. The shield must be connected to the Submin D shell at the servo module side
and to the housing of the measuring system.
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.
Conductors: shielded, twisted in pairs. Twist mode: sine/sine, cosine/cosine, rotor/
rotor and, if necessary, thermal contact/thermal contact.
For delicate applications we recommend to additionally shield 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 effect sensors and tachometer generator
LIYCY 9 x 0.14 or 12 x 0.14 for motors with integrated thermal contact.
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