IndraControl L40
Installation and Maintenance
8-9
DOK-CONTRL-IC*L40*****-PR03-EN-P
8.3 Electric
Installation
The following rules for setting up a system, in which the electrical
equipment like control systems are used, must be adhered to:
•
DIN VDE 0100
•
DIN EN 60 204-1
•
DIN EN 50 178
DANGER
Danger of personal injury and material damage!
⇒
Any dangerous states of the system which might
cause personal injury or material damage must be
prevented!
⇒
The rules and regulations for setting up
EMERGENCY STOP equipment in accordance with
EN 60 204-1 must be adhered to!
⇒
Any automatic restart of machines after power
return, e. g. after an EMERGENCY STOP, must be
excluded!
⇒
Protection for direct and indirect contact must be
ensured by the measures prescribed (connection to
protective conductor, isolation, etc.).
External Power Supply Unit
All components of the IndraControl L40 are supplied with 24 V supply
voltages.
The power supply unit must be safety-separated in accordance with
DIN EN 50 178, section 5.2.18.1. Transformers must be designed with
safety separation in accordance with DIN EN 60 742.
If these requirements are complied with, the 24 V supply voltage is rated
as safety-separated extra-low voltage in accordance with DIN EN 50 178,
section 5.2.8.1. This voltage is designed either as safety extra-low voltage
(SELV) without ground connection of the reference conductor or as
protective extra-low voltage (PELV) with ground connection of the
reference conductor.
A three-phase power supply unit with easy full-bridge rectification is
appropriate. The ripple voltage content must not exceed 5 %.
All 24 V voltage supply lines have to
•
be laid such that they are isolated from lines carrying higher voltages,
or
•
be insulated to a particularly high degree, with the insulation having to
be designed for the highest voltage present (see EN 60 204-1: 1997,
section 14.1.3).
Any peripherals, such as digital sensors/actuators, which are connected
to the interfaces of the IndraControl L40, have to comply also with the
criteria of safety-separated circuits.
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