ZyXEL Communications MS-7206, User Manual

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Chapter 8 Connections and LEDs
MS-7206 Hardware Installation Guide
65
MP-7203 DC-DC Power Module
Each MP-7203 DC-DC power module has two terminal blocks which allow you to connect to
two power supplys. Use two wires to connect to each terminal block, one wire for the positive
terminal and one wire for the negative terminal.
"
The current rating of the power wires must be greater than 20 Amps.
"
The power supply to which the MP-7203 connects must have a built-in circuit
breaker or switch to toggle the power.
1 Slide the power switch socket cover down.
2 Use a screwdriver to loosen the thumbscrew on the front panel of the power module.
3 Use a screwdriver to loosen the screw on the cover of the terminal block and remove it.
Figure 28 Removing the Terminal Block Cover from the MP-7203 Power Module
4
Grab the handle and slide the module out of the slot slightly untill the screws on the side
of the terminal blocks are exposed.
5 Connect one power wire to the RTN (return) terminal on the MS-7206 power module
and tighten the screw.
6
Connect the other end of the power wire to the positive terminal on the power supply.
7 Connect one power wire to the -48V (input) terminal on the MS-7206 power module and
tighten the terminal screw.
8 Connect the other end of the power wire to the negative terminal on the power supply.