DC motor - Siemens, s.r.o.
DC motor - Siemens, s.r.o.
DC motor - Siemens, s.r.o.
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Installation and Assembly<br />
are transmitted virtually completely (rigid, unpressed wire end ferrules would<br />
reduce the clamping forces acting on the conductor and hence endanger the<br />
contact quality).<br />
[ID 531]<br />
3.5.5 Connecting auxiliary circuits<br />
Auxiliary circuit, general<br />
Brush monitoring<br />
Tacho-generator<br />
Terminal strips for conductor cross-sections of up to 2.5 mm 2 are installed for<br />
connecting the auxiliary circuits, such as temperature sensors or standstill heating.<br />
The information required to connect the auxiliary circuits is provided in the<br />
connection diagram, located on the inside of the terminal box cover, and in the<br />
<strong>motor</strong> documentation.<br />
Note<br />
The required insulation stripping length on conductors for auxiliary terminals differs<br />
according to terminal type (6 to 9 mm). When the length is correct, the bare<br />
conductor should reach to the central stop in the terminal and at the same time the<br />
conductor insulation should be run up to the contact part of the terminal.<br />
Depending on the design of the <strong>motor</strong>, signal transmitters may be installed for<br />
brush monitoring.<br />
The brush monitoring facility serves the purpose of detecting the limit value of the<br />
brush height. When a brush height of approximately 2 mm above the prescribed<br />
minimum brush height is reached, a signal is generated via a microswitch. In<br />
normal operation and at average speeds, this corresponds to a remaining running<br />
time of between 500 and 1000 operating hours. The carbon brushes must be<br />
replaced in good time.<br />
The electrical connection conditions are shown in the terminal diagram in the<br />
terminal box.<br />
With built-on tacho-generators the electrical connection is on the line-side; the<br />
supplementary operating instructions must be observed.<br />
Temperature monitoring<br />
Caution<br />
In the case of <strong>motor</strong>s with temperature sensors, their temperature evaluation and<br />
control system must be designed in such a way that danger from unexpected<br />
automatic restarting of the installation is ruled out following response of the<br />
temperature protection and subsequent cooling.<br />
SIEMENS AG T61160347010001 (DMHO V9)<br />
Operating instructions 1GG6286-0NA4.-1VV1-Z 3-13