Connecting The Temperature Sensor; Connection To A Converter - Siemens SIMOTICS M-1PH8 Operating Instructions & Installation Instructions

6.4.7

Connecting the temperature sensor

● The temperature sensor is connected to the signal connector together with the speed
● For the version without speed encoder, the temperature sensor is connected at the terminal
● The motor has a reserve temperature sensor, which is also connected at the auxiliary
6.4.8

Connection to a converter

Selecting and connecting the cable
● Use Motion Connect cables or symmetrically constructed, shielded cables to connect the
● The shield must be connected at both ends to the motor and the converter; unshielded
● To ensure effective discharge of high-frequency currents, make the shield contact over the
Measures to reduce bearing currents
To specifically reduce and prevent damage caused by bearing currents, you must consider
the system as a whole, which comprises the motor, converter, and driven machine. The
following precautions help to prevent bearing currents:
● Setting up a properly meshed grounding system in the system as a whole, with low
● No potential difference between the motor, converter, and working machine.
● Use iron cores mounted above the motor connecting cable at the converter output. These
● Limit the voltage rate of rise by using an output filter to dampen harmonic components in
SIMOTICS M-1PH8
Operating Instructions 05/2012 A5E03986435A AA
encoder signal.
strip.
terminal strip. Reconnect the temperature sensor as needed, e.g. if the previous
temperature sensor fails.
motor to a converter. The cable shielding, made up of as many strands as possible, must
have good electrical conductivity. Braided shields made of copper or aluminum are well
suited.
cable ends must be kept as short as possible.
largest possible area, i.e. as a 360° contact on the converter and motor, e.g. using EMC
glands at the cable entry points.
impedance for high-frequency currents
– Use symmetrical, shielded connecting cables.
– Connect the cable shield at both ends over the greatest possible surface area (360°
contact).
– Use equipotential bonding conductors between the motor and the driven machine as
well as between the motor and the converter
help to reduce common-mode components. The Siemens sales representative is
responsible for selection and dimensioning.
the output voltage
Electrical connection
6.4 Auxiliary circuits
71