Requirements for the motor temperature sensors
Instruction handbook b maXX BM4400, BM4600, BM4700
Document No.: 5.12008.07 Baumüller Nürnberg GmbH
170
of 358
7.8
In order to have EMC-compliant and problem-free use within the framework of the legis-
lation, the following aspects must be taken into account.
In case of any questions, please contact Sales or the Applications department of
Baumüller Nürnberg GmbH.
m Only use Baumüller motor cables and Baumüller components.
m Use suitable mains
filters from Baumüller Nürnberg GmbH.
m M
ount all components on a single mounting plate with a continuously good electrically-
conductive surface (e.g. galvanized steel plate).
m Ke
ep the ground connection device/ground plate as short as possible (< 30 cm) , using
fine-stranded cables with a large cross-section (>10 mm
2
).
m When installing,
be sure to follow the correct sequence:
power supply system - fuse - filter - choke - (ferrite core) - BM
4400, BM4600, BM4700
- (motor filter) - motor.
m En
sure that the motor cable is continuous, without interruption.
Do not interrupt motor cables with terminals, co
ntactors or fuses, for example.
m Ro
ute the cables directly on the surface of the grounded mounting plate.
(smallest possible effec
tive aerial height).
m Wh
en routing in parallel, maintain a minimum clearance of 20 cm between signal and
control cables vis-à-vis the power cables.
m Cro
ss cables with different EMC categories (signal cables - supply cables or motor ca-
bles) only in a 90° angle.
m Contact the
major cable shield when laying cables through walls, which separate dif-
ferent EMC areas.
m Co
ntact all the cable’s shields on both sides surface-to-surface and also well-conduc-
tive with ground.
7.8 Requirements for the motor temperature sensors
Type Additional requirements: Isolation
KTY84 - SELV/PELV
MSKL
1)
(PTC) R = 1 k at T
threshold
, I
max
< 2 mA SELV/PELV
To protect the motor against not permitted overheating, a motor temperature sensor can
b
e connected to the b maXX device. The device switches off of the motor when a settable
threshold temperature has been exceeded.
1)
Motor protection resistor (PTC) as per DIN 44080-082
NOTE!
The motor temperature sensor should be installed in such a manner that „safe elec-
trical separation“ is ensured. The motor temperature sensors integrated into
Baumüller motors meet these requirements. If third-party motors are connected, the
proprietor must ensure that the temperature sensors used in the motor of a third-party
manufacturer motor comply with the „safe electrical separation“ function.
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