Burkert Type 8644 - Manual (Page 38)

34 - 8644/phoenix
S
YSTEM
D
ESCRIPTION
Terminal configuration of the power supply terminal
ATTENTION!
Earth (ground) the bus terminal!
Earth the bus terminal via one of the FE connections of connector 1.3 or 2.4. For this
purpose, connect the relevant contact to an earthing terminal.
Configuration of the terminal points
Terminals
Left Right Colour Abbrev. Meaning
1.1 2.1 black U
S
Segment supply (+24V DC)
1.2 2.2 red U
M
Main, bus, logic and interface supply (+24V DC)
1.3 2.3 blue GND Reference potential
1.4 2.4 --- FE Functional earth
24 V segment power supply / 24 V main power supply
The reference potential of the segment power supply must be the same as that of the main power supply.
Hence no separate potential structure is possible on the periphery side.
The main power supply and the segment power supply are equipped with elements for protection against
false polarity and transient overvoltage.
24 V segment power supply
You can supply or generate the segment voltage at the bus terminal or one of the supply terminals. There
are several options for providing the segment voltage at the bus terminal:
You can supply the segment voltage at the terminal points 1.1/2.1 and 1.3/2.3 (GND) of the power
supply connector separately.
You can bridge the connections 1.1/2.1 and 1.2/2.2 to assure supply of the segment circuit from the
main circuit.
With a switch between terminal points 1.1/2.1 and 1.2/2.2, you can build up a switched segment circuit
(e.g. also an EMERGENCY OFF circuit).
2.1
2.2
2.3
2.4
1.1
1.2
1.3
1.4