Siemens H-compact PLUS, Operating Instructions Manual

Page: 33 / 83

Connection
6.2 Connecting auxiliary circuits
WOGeneric TEAAC / 2008
Siemens AG Operating Instructions 1.03 1RQ671...-Z
31
6.2 Connecting auxiliary circuits
6.2.1 Connecting the anti-condensation heating and auxiliary circuits
Anti-condensation heating
NOTICE
Only run anti-condensation heating when the motor is shut down
Running anti-condensation heating when the motor is in operation can cause motor
temperatures to increase.
Only run anti-condensation heating when the motor is shut down. Include an appropriate
interlocking circuit with the main switch of the machine when installing the electrical system.
Before switching on the machine you should always check that the anti-condensation
heating is not running.
Connecting the auxiliary circuit
The type designations of the mounted auxiliary terminal boxes, their arrangement, and the
relevant connection terminals are documented in the "Technical specifications" section. The
information required to connect anti-condensation heating and the auxiliary circuits is
provided in the connection diagram, located on the inside of the terminal box cover, and in
the "Technical specifications" section. The terminals are suitable for conductor cross-
sections up to 4 mm
2
.
Selecting the cables
● When choosing connecting cables, you must take into account the rated current and the
plant-specific conditions (e.g., ambient temperature, routing type, etc. to IEC/EN 60204-
1).
Cable entry and routing
A plate is bolted into the terminal box enclosure via a rectangular cut-out, through which the
connecting cables are introduced. Normally, this plate is supplied without threaded holes for
the cable glands, so that the number and size of the cable glands can be adapted to the
application conditions.
1. Unscrew the cable entry plate.
2. Drill the required number of holes or a thread in the required size into the cable entry
plate.
3. Mount the cable entry plate and the cables with the cable glands onto the terminal box.
4. Seal the screwed sockets on the cable glands to conform to the degree of protection.