Installing and connecting the device
3.3 Connecting the device
IFP Basic
Operating Instructions, 03/2019, A5E46178354 - AB
33
Location of function earth
The location of function earth for SIMATIC IFP1200 Basic is different from other IFP Basic.
SIMATIC IFP1500/1900/2200 Basic
Connecting devices with 24 VDC 2-pin
You can operate the IFP Basic with the voltage 24 VDC 2-pin.
Note before connecting the device
Safe electrical isolation
The device may only be connected to a 24 VDC power supply that meets the requirements
of a safe extra-low voltage (SELV) according to IEC/EN/DIN EN/UL 61010-1 or the
requirements of a secure extra-low voltage (SELV/PELV) according to IEC 61010-1.
Damage to device due to inadequate cable cross-section
Using power supply cables with cross-sections that are too small can damage the device in
the event of a short circuit. The power supply connector is designed for cables with a cross-
section between 0.75 mm
2
and 2.5 mm
2
.
Note
Siemens recommends you use 5 lb
-in (0.56Nm) to fasten the power supply cable.
Note
The 24 VDC power supply must be adapted to the input data of the device, see section
"
Technical specifications (Page 58)".
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