Connecting The (24 V) Dc Power Supply - Siemens Simatic box pc 627b Operating Instructions Manual

Connecting

6.3 Connecting the (24 V) DC power supply

6.3 Connecting the (24 V) DC power supply
6.3
Note before connecting
Warning
Only connect the device to 24 V DC power supply systems which meet the requirements of a
safe extra-low voltage (SELV); in addition, a protective conductor must be connected. The
conductors must withstand the short-circuit current of the 24 V DC power source, so that a
short-circuit will not damage the cable. Only connect cables with a minimum cross-section of
1.3 mm
Notice
The 24V DC power source must be adapted to the input data of the device (see
specifications).
Connecting
Steps for connecting the device to the 24 V DC power supply
1.
2.
3.
6-4
(AWG16) and a maximum cross-section of 3.3 mm
2
Ensure that the ON/OFF switch is in the '0'
(OFF) position to prevent unintentional startup
of the device when connecting it to the 24 V
power supply.
Switch off the 24 V DC power source.
Insert the DC power plug.
(1) 24 V DC
(2) ground
(3) protective conductor
(AWG12).
2
Operating Instructions, Release 05/2006, A5E00362052-03
SIMATIC Box PC 627