Installation Guide

The DC power connection at your facility must be made by a qualified electrician, following these
instructions.
Warning
Always make sure that the DC circuit is de-energized before connecting or disconnecting the
DC power cables on the DC power supply.
Caution
Provide proper connection and strain relief on the DC power cables in accordance with all
local and national electrical codes.
1. Verify that the DC circuit is de-energized.
2. Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an
appropriate ground point on the rack.
3. Slide the cover o the terminal block.
4. Connect the DC power input cables as follows:
When connecting the power supply to a +24 V source:
a. On each terminal, loosen the screw enough to so that the spade terminal can slide underneath
the captive square washer.
(+)
(–)
+24V
-24V
Figure 267: Loosening Terminal Screws (Connecting to a +24 V Source)
b. Slide the spade terminal of the negative wire (–24 V) under the captive square washer on the
negative terminal (labeled –24 V).
Installing Switches
Install a 300 W Internal DC Power Supply
Summit Family Hardware Installation Guide 337