6.4.5 Connecting the temperature sensor
● The temperature sensor is connected to the signal connector together with the speed
encoder signal.
● For the version without speed encoder, the temperature sensor is connected at the terminal
strip.
● The motor has a reserve temperature sensor, which is also connected at the auxiliary
terminal strip. Reconnect the temperature sensor as needed, e.g. if the previous
temperature sensor fails.
WARNING
Risk of electric shock
The insulation of the temperature sensors for the winding monitoring with respect to the
winding is implemented according to the requirements for basic insulation. The temperature
sensor connections are located in terminal boxes, safe to touch - and have no protective
separation. This is the reason that in the case of a fault, a hazardous voltage can be present
at the measuring sensor cable. When touched, this can result in death, severe bodily injury
and material damage.
● When connecting the temperature sensor to external temperature monitoring devices,
when required, apply additional measures to fully comply with the requirements set out in
IEC 60664-1 or IEC 61800-5-1 "Hazard due to electric shock".
6.4.6 Connecting to a converter
Selecting and connecting the cable
● Use Motion Connect cables or symmetrically constructed, shielded cables to connect the
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.
● The shield is connected at both ends, at the motor and converter. Keep unshielded cable
ends as short as possible.
● In order to ensure that high-frequency currents are efficiently discharged, provide a 360°
contact through a large surface area at the converter and at the motor. Use for instance,
EMC glands at the cable entries.
Electrical connection
6.4 Auxiliary circuits
SIMOTICS M-1PH8 1PH818., 1PH822.
80 Operating Instructions 07/2016
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