Siemens NCU 7x0.3 PN Series - Connecting the Power Supply

Connecting
7.4 Power supply
NCU 7x0.3 PN
48 Manual, 09/2011, 6FC5397-1EP40-0BA0
7.4.3 Connecting the power supply
Wiring the screw-type terminal block
The required 24 V DC load current supply is wired to screw-type terminal block X124.
DANGER
The 24 V direct voltage is to be configured as a protective extra low voltage - DVC A or
PELV.
Supply system lines
Table 7- 5 Cable specification for X124
Characteristics Version
Connector type Screw-type terminals
Connection option Up to 2.5 mm
2
Current carrying capacity incl. looping through the
cable
max. 30 A
*)
Max. cable length 10 m
*)
This value must be taken into consideration for the current-carrying capacity of the power supply
cable.
Use flexible cables with a cross section of 0.25 to 2.5 mm
2
(or AWG 23 to AWG 13) for wiring
the power supply.
If you only use one wire per connection, an end sleeve is not required.
You can use end sleeves without an insulating collar in accordance with DIN 46228, Form A
long version.