Connecting
5.4 Power supply
SCALANCE X-300M
40
Compact Operating Instructions, 10/2014, A5E02630801-06
Terminal block assignment (4-pin)
Table 5- 3
Pinout of the safety extra-low voltage (SELV)
Pin number
Assignment (24 VDC)
Assignment (12 VDC)
Labeling (example)
Pin 1
L1+ (24 VDC)
L1+ (12 VDC)
Pin 2
M1
M1
Pin 3
M2
M2
Pin 4
L2+ (24 VDC)
L2+ (12 VDC)
To wire up the power connector, use a copper cable of category 18-12 AWG or cable with a
cross-section of 0.75 to 2.5 mm².