2726188 Phoenix Contact, 2726188 Datasheet - Page 31

• Manufacturer Part Number: 2726188
• Description: INTERBUS Bus Coupler
• Manufacturer: Phoenix Contact

Potential jumpers
Carrying capacity of the
jumper contacts
Electrical isolation
Functional earth
grounding (24 V DC)
Required additional
functional earth
grounding (24 V DC)
Protective earth
grounding
(120 V AC/230 V AC)
Additional documentation
6452_en_02
The power terminal interrupts all potential jumpers for the voltages to be reinjected, and
recreates all potential jumpers (see also "Electrical potential and data routing
(Inline Modular IO)" on page 7-1).
The maximum current carrying capacity of the jumper contacts on the side is specified in
"Current and voltage distribution" on page 7-12.
The power terminal is used to create electrically isolated I/O areas within a station.
24 V power terminals are connected to functional earth ground when they are snapped onto
the grounded DIN rail via the FE spring on the bottom of the terminal. This spring is
connected to the FE potential jumper and to the terminal points for an FE connection.
If the previous terminal is a 24 V terminal, the power terminal is connected to the FE potential
jumper of the station when it is snapped onto this terminal.
A 120 V AC and 230 V AC voltage level area interrupts the FE jumper, which is connected
to FE via the additional functional earth grounding at the bus coupler. A 24 V DC power
terminal that is at a different voltage area must therefore be reconnected to functional earth
ground via the FE connection to ensure reliable functional earth grounding of the station
even if the FE spring is dirty or damaged. Connect the terminal points for the FE connection
to a grounded PE terminal (see "Grounding concept" on page 9-8).
The PE terminal point of the power connector connects the 120 V AC and 230 V AC power
terminals to protective earth ground (PE). This terminal point is connected to the PE
potential jumper, which is led through the entire 120 V AC or 230 V AC voltage area.
For more detailed information about the function, properties, and wiring of the individual
terminals, please refer to the terminal-specific documentation.
PHOENIX CONTACT
Inline product groups
4-7