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UM EN ILC 1XX
2-32
PHOENIX CONTACT 7805_en_02
2.15.3 24 V segment supply/24 V main supply
The segment supply and main supply must have the same reference potential. An electrically
isolated voltage area is not possible.
2.15.4 24 V segment supply
There are several ways of providing the segment voltage at connector 1:
1. The segment voltage can be supplied separately at terminal points 1.1 and 2.3 (GND)
(see Figure 2-23 on page 2-30).
2. You can jumper connections 1.1 and 2.1 (or 2.2) to ensure that the segment circuit is
supplied from the main circuit.
3. You can create a switched segment circuit with a switch between terminal points
1.1 and 2.1 (or 2.2).
2.15.5 24 V main voltage
2.15.6 24 V ILC supply
NOTE:
When terminal points 1.1 and 2.1 (or 2.2) are jumpered, the maximum permissible
current of 2.5 A flowing through the potential jumpers U
M
and U
S
(total current) must not
be exceeded.
NOTE:
The 24 V segment supply has protection against polarity reversal and surge voltage.
It does not have short-circuit protection.
The user must provide short-circuit protection. The rating of the preconnected fuse must
be such that the maximum permissible load current of 8 A is not exceeded (total current
at U
M
and U
S
).
NOTE:
The 24 V main supply has protection against polarity reversal and surge voltage.
It does not have short-circuit protection.
The user must provide short-circuit protection. The rating of the preconnected fuse must
be such that the maximum permissible load current of 8 A is not exceeded (total current
at U
M
and U
S
).
NOTE:
The 24 V ILC supply has protection against polarity reversal and surge voltage. These
protective elements are only used to protect the power supply unit.
The rating of the preconnected fuse must be such that the maximum permissible load
current of 2 A is not exceeded.
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