HIMax System
9 Lifecycle
HI 801 001 E Rev. 4.01
Page 97 of 122
is permitted. Earthing of positive pole L+ is not permitted since a potential earth fault on the
transmitter line would bypass the affected transmitter.
L- can only be earthed on one place within the system. L- is usually earthed directly behind
the power supply unit (e.g., on the busbar). The earthing should be easily accessible and
well separable. The earthing resistance must be
≤
2
Ω
.
Measures for Installing the Control Cabinet in Conformity with the CE Label
In accordance with the EU Council Directive 89/336/EEC, converted in the EMC law for the
Federal Republic of Germany, from the 1st January 1996, all electric equipment within the
European Union must be labeled with the CE conformity marking for electromagnetic
compatibility (EMC).
All modules of the HIMA system family "HIMax" are labeled with the CE conformity
marking.
When installing controllers in control cabinets and support frames, ensure proper and
interference-free electrical installation in the vicinity of the controllers to prevent EMC
problems. For instance, do not lay power lines together with 24 V feed lines.
Earthing the HIMA Controllers
While also taking the EMC aspects into account, implement the following earthing
measures to ensure the safe function of HIMA controllers.
All tangible surfaces of the HIMax components (e.g., base plate), except for pluggable
modules, are electrically conductive (ESD protection, ESD = electrostatic discharge). Use
cage nuts with claw fasteners to ensure the safe electrical connection of components such
as base plates and the control cabinet. The claw fasteners penetrate the components'
surface and ensure safe contact making. The screws and flat washers used prevent electric
corrosion in stainless steel.
Mounting the HIMax on a Support Frame
The roof sheeting is secured to the cabinet frame with four lifting eyes (see ). Earth claw
fasteners are used to electrically connect the side panels and the backplane to the cabinet
frame.
Two M 2500 busbars
are installed in the cabinet by default and connected to the
cabinet frame with 25 mm
2
round cables. After removing the this connection, the busbars
can be used for a earth-isolated potential (e.g., for connecting the field cable shielding).
An M 8 bolt is located on the cabinet frame
to allow customers to connect the protective
earth cable.
Summary of Contents for HIMax
Page 1: ...SYSTEM HIMax System Manual...
