Electrical Connection Of The Product; Interference Suppression; Fig. 48: Noise Suppression Examples - Bosch Rexroth PRC 7000 Betriebsanleitung

R911172834 / 02 | PRC7000
7.2

Electrical connection of the product

7.2.1

Interference suppression

+
Diode, suitable for small DC voltage re­
DIODE AND ZENER DIODE
+
DI-ZD attenuation element for large DC voltage con­
tactors and defined dropout times

Fig. 48: Noise suppression examples

" Please note the safety instructions relevant for electrical connection
in Section 2.6.4 starting on page 184 and in Sect. 3.3 starting on
page 196.
" Make sure that all respective plant sections are de­energized before
and during the electrical connection work.
Make sure that the required conditions for electrical connection are
"
complied with. Refer to Section 15 starting on page 305.
The maximum possible connection cross­sections and tightening
torques for mains and transformer cables are provided there.
Noise is caused by switching peaks and can interfere with the timer di­
rectly or through coupling with connecting lines. Therefore, measures
must be taken to suppress noise.
Eliminate all noise at its very source. Where this is not possible, the
"
noise suppression elements must be attached as close as possible
to the source of noise.
First make sure that proper noise suppression is available for all
"
components containing inductive elements or switchgear.
" Noise suppression equipment must be installed resistant to fracture
because strong vibration may occur on machines.
DIODE
GND
lays
GND
The following table serves as an example only. The rating of the ne­
cessary components depends on the actual load situation.
Bosch Rexroth AG
RC ELEMENT
∼
RC element for AC voltage relays and
AC motors
RC ELEMENT
RC element for spark quenching with
inductive load
269 / 334
Assembly
MP