Endress+Hauser SOP300, Brief Operating Instructions, Page: 20 / 32

Electrical connection Overfill Prevention System SOP300
20 Hauser
6.2 Connecting the system
6.2.1 Supply voltage electrical connection
The supply voltage must meet the following requirements:
• L / N / PE
• 100 to 240 V AC
• 45 to 65 Hz
• Wire cross-section: min. 2.5 mm 2 , observe country-specific standards
If the control cabinet of the Overfill Prevention System is fitted with an optional, redundant
power supply, the supply voltage can be redundant. If a redundant supply voltage is not
available, you can bridge the existing supply voltage in the control cabinet . Refer to the
separate wiring diagram.
L
N
1 N PE
PE
–1X1
U
1
2
1
2
 8 Supply voltage connection without a redundant power supply in the control cabinet SOP300
1 Customer side
2 Supply voltage U
1
L
N
PE
1 N PE –1X1
L
N
PE
1 N PE –1X3
U
1
U
2
1
2 3
 9 Supply voltage connection with a redundant power supply in the control cabinet SOP300 – with a
redundant supply voltage
1 Customer side
2 Supply voltage U
1
3 Supply voltage U2