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FL SWITCH EP74…
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PHOENIX CONTACT 4083_en_A
4.4.2 Power supply module installation
The FL SWITCH EP74… switch accepts up to two (for redundancy) FL SWITCH EP7400-
PS-… power supply modules. A slot cover is provided if the switch is operated with only one
power supply module.
WARNING:
CONS
OLE
MGM
T
PS 2
PS2
PS1
RESE
T
1
2
SD CA
RD
PS 1 ALA
RM
1
2
3
Never install or operate the device with an open power supply module slot. Always
have a cover or power module installed.
Never connect AC power cables to a 24 or 48 V DC power supply terminal block.
Always install equipment according to applicable federal, state, and local laws.
Figure 4-3 Power supply module installation
Voltage supply conductors connect to the terminal block on the rear of the switch, not di-
rectly to the power supply modules.
The power supply modules are hot-swappable and accessible from the front of the switch
when mounted in a rack for maximum uptime.
WARNING:
Before installing or replacing a power supply module, ensure that the rated voltage of
the module matches the voltage from the supply source.
1. Remove the screws securing the cover plate over the power slot on the front of the
switch.
2. Insert the desired power supply module (1) into the slot (2) until the connectors are firm-
ly seated.
3. Secure the module with the module retaining screws (3).
4. Repeat the process for the other PS slot.
Removal
To remove a power supply module, remove the screws securing the module in the slot. If a
replacement module will not be installed, a blank cover (Order No. 1144428) must be in-
stalled on the slot.