Festo Контроллер позиционирования CPX-CMPX - Manual (Page 88)

3. Installation
3−8
Festo P.BE−CPX−SYS−EN en 0902e
3.1.4 Selecting the power supply unit
Warning
· Use only PELV circuits as per IEC/DIN EN 60204−1 for the
electric power supply (protective extra−low voltage,
PELV).
Also observe the general requirements for PELV circuits
laid down in IEC/DIN EN 60204−1.
· Use only power sources that guarantee reliable electriĆ
cal isolation of the operating voltage as per
IEC/DIN EN 60204−1.
Protection against electric shock (protection against direct
and indirect contact) is guaranteed in accordance with
IEC/DIN EN 60204−1 by using PELV circuits (electrical equipĆ
ment of machines, general requirements).
The current consumption of a CPX terminal depends on the
number and type of integrated modules and components.
Recommendation:
· Use regulated power supply units, to ensure that the load
voltage of the outputs remains within the permitted tolerĆ
ances even during continuous operation.
· Select power supply units that provide sufficient output
reserves for later extensions to the CPX terminal.
Note
When selecting the power supply units, check that they
have sufficient output. If necessary, ascertain the current
consumption according to the following tables.