Requirements For The Motor Temperature Sensors - Baumuller b maXX 5000 Series Instruction Handbook Manual

7.11

Requirements for the motor temperature sensors

Installation of toroidal cores
h The three phases without shielding and without PE must be lead through the cores.
h When using toroidal cores it is further recommended to use current isolated bearings
7.11 Requirements for the motor temperature sensors
To protect the motor against impermissible overheating, a motor temperature sensor can
be connected to the b maXX device. The device switches off of the motor when a settable
threshold temperature has been exceeded.
1)
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Instruction handbook b maXX 5000
Document No.: 5.09021.16
of 328
The cores must be installed and attached near the motor connection of the 5000.
on the nondrive end for synchronous/asynchronous main drives sizes 180 and higher.
Figure 62: Mounting - single ring core
Type
KTY84/PT1000
1)
MSKL (PTC) R = 1 k at T
Motor protection thermistor (PTC) as per DIN 44080-082
NOTE!
The motor temperature sensor should be installed in such a manner that „electrically
protective separation" is ensured. The motor temperature sensors integrated into
Baumüller motors meet these requirements. If third-party motors are connected, the
operating company must ensure that the temperature sensors used in the motor of a
third-party manufacturer motor comply with the „electrically protective separation"
function.
Figure 63:
Additional requirements:
-
, I
Protection max
Mounting - several ring cores
Isolation
SELV/PELV
< 2 mA SELV/PELV
Baumüller Nürnberg GmbH