Chapter 3 Hardware Overview
•Keep the power supply switch in the OFF position until you come to the procedure for turning on the power.
Note: Use the included power cord for the AC power connection.
Note: Use only power wires of the required diameter for connecting the Switch DC power input to a power supply (see Chapter 55 on page 455 for the required wire diameter).
3.3.1 AC Power Connections
1Connect the female end of the power cord to the AC power socket.
2Connect the other end of the cord to a power outlet.
3.3.2DC Power Connections
The Switch uses a single ETB series terminal block plug with four pins which allows you to connect up to two separate power supplies. If one power supply fails the system can operate on the remaining power supply. Use two wires to connect to a single terminal pair, one wire for the positive terminal and one wire for the negative terminal.
Note: The current rating of the power wires must be greater than 20 Amps. The power supply to which the Switch connects must have a
Note: When installing the Switch power wire, push the wire firmly into the terminal as deep as possible and make sure that no exposed (bare) wire can be seen or touched.
Exposed power wire is dangerous. Use extreme care when connecting a DC power source to the device.
To connect a power supply:
1Use a screwdriver to loosen the terminal block captive screws.
2Connect one end of a power wire to the Switch’s RTN (return) pin and tighten the captive screw.
3Connect the other end of the power wire to the positive terminal on the power supply.
4Connect one end of a power wire to the Switch’s
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