Terminal block assignment (4-pin)
Table 6-4
Pinout of the 24 to 48 V safety extra-low voltage (SELV)
Pin number
Assignment
Pin 1
L1+ (24...48 VDC)
Pin 2
M1
Pin 3
M2
Pin 4
L2+ (24...48 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.
6.7.1.4
Connecting a redundant power supply to the XR300-EEC
Device variants with 1 or 2 power supply units
There are devices variants with one power supply unit or with two power supply units. With
device variants with two power supply units, the 2nd power supply unit is also known as the
redundant power supply unit.
The connection is made using a 4-terminal plug-in terminal block to which two power supply
units can be connected (connected redundantly).
If two power supply units are connected, this is known as a redundant power supply.
Connect two power supplies as described below to achieve a correlation between the pin
assignment and LED display.
Connecting a redundant power supply to 1 power supply unit
Use "PS1" to connect the power supply of the terminal block.
L1
L2
L1
M1
L2
M2
L1
L2
L1
M1
L2
M2
F1
F2
PS1
Figure 6-2
Assignment of the LED display to the pins for redundant power supply with devices with one
power supply unit
Connecting
6.7 Power supply
SCALANCE XR-300M EEC
52
Compact Operating Instructions, 11/2019, A5E02661176-14
Содержание SCALANCE XR324-4M EEC
Страница 10: ...Introduction SCALANCE XR 300M EEC 10 Compact Operating Instructions 11 2019 A5E02661176 14 ...
Страница 12: ...Safety notes SCALANCE XR 300M EEC 12 Compact Operating Instructions 11 2019 A5E02661176 14 ...
Страница 84: ...Index SCALANCE XR 300M EEC 84 Compact Operating Instructions 11 2019 A5E02661176 14 ...