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FL SWITCH MM HS
2-10
PHOENIX CONTACT
6874_en_16
2.7
Installing the MMS or MCS
2.7.1
Connecting the supply voltage to the MMS/MCS
24 V DC
The system is operated using a 24 V DC voltage, which is applied at the head station or
MCS. If required, the voltage can also be supplied redundantly (see Figure 2-16).
Figure 2-15
Supplying the system using one voltage source
Redundant 24 V DC supply
Figure 2-16
Supplying the system using two voltage sources
If redundant power supply monitoring is active (default setting), an error is indicated if only
one voltage is applied. A bridge between US1 and US2 (dotted line connection) prevents
this error message. It is also possible to deactivate monitoring in web-based management
or via SNMP.
6 8 7 4 0 0 0 5
U S 2
U S 1 G N D
G N D
R 1
R 2
V . 2 4
2 4 V D C
X 5
X 6
X 7
2 4 V D C
6 8 7 4 0 0 0 6
2 4 V D C
U S 2
U S 1 G N D
G N D
R 1
R 2
V . 2 4
X 5
X 6
X 7
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
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