5
Electrical installation
Installation instructions (all versions)
Operating Instructions – MOVIFIT
®
MC
39
5.3.5
Definition PE, FE
WARNING
Electric shock due to incorrect connection of PE to the terminals marked with "FE"
(functional earth). The FE connections are not designed for this purpose. This
means electrical safety is not guaranteed.
Severe or fatal injuries.
• The permitted tightening torque for the retaining screw is 2.0 to 2.4 Nm.
• Observe the following notes regarding the PE connection:
•
PE
refers to the mains-side protective earth connection. The PE conductor in the
mains connection cable may only be connected with terminals marked with "PE".
These are dimensioned for the max. permitted line connection cross section.
•
FE
refers to connections for "functional earth". You can connect any existing
grounding conductor in the 24 V connection lead.
5.3.6
Meaning of the 24 V voltage levels
MOVIFIT
®
has a total of 4 different 24 V potential levels, which are electrically isolated
from each other:
• 1) 24V_C: C = Continuous
• 2) 24V_S: S = Switched
• 3) 24V_P: P = Power section
• 4) 24V_O: O = Option
Depending on the requirements of the application, these can either be isolated, sup-
plied externally, or connected to each other via a X29 distributor terminal.
24V_C = Electronics and sensor supply
The 24V_C voltage level supplies:
• MOVIFIT
®
control electronics
• The sensors connected to the sensor supply outputs VO24_I, VO24_II and
VO24_III.
Do not disconnect the 24V_C voltage level during operation. If you do this, you can no
longer control the MOVIFIT
®
unit via fieldbus or network, and the sensor signals are
no longer processed.
When restarted, the MOVIFIT
®
unit needs a certain amount of time to boot.
19484828/EN – 01/2015
