Preparations For Use; Safety-Related Aspects To Consider When Configuring The Plant; Observing The Operating Mode; Cooling Air Quality - Siemens SIMOTICS 1PQ8 Operating Instructions Manual

Preparations for use

Good planning and preparation of machine applications are essential in terms of keeping
installation simple and avoiding errors, ensuring safe operation, and allowing access to the
machine for servicing and corrective maintenance.
This chapter outlines what you need to consider when configuring your plant in relation to this
machine and the preparations you need to make before the machine is delivered.
4.1

Safety-related aspects to consider when configuring the plant

A number of residual risks are associated with the machine. These are described in the chapter
titled "Safety information" (Page 15) and in related sections.
Take appropriate safety precautions (covers, barriers, markings, etc.) to ensure the machine
is operated safely within your plant.
4.2

Observing the operating mode

Observe the machine's operating mode. Use a suitable control system to prevent overspeeds,
thus protecting the machine from damage.
4.3

Cooling air quality

The cooling air is only permitted to have weak chemically aggressive properties and must only
have low levels of oil or dust.
4.4

Interlock circuit for the external fan motor

For machines with external fans, install an interlock circuit that prevents the main machine
being switched on if the external fan is not operational.
See also
Connecting an external fan motor (Page 86)
4.5

Thermal motor protection

The machine is equipped with PTC thermistors for direct monitoring of the motor temperature
to protect the machine against overheating during operation. Plan a corresponding circuit for
monitoring.
SIMOTICS TN Series N-compact 1PQ8
Operating Instructions 11/2018
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