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4-27
Catalyst 2955 Hardware Installation Guide
78-14944-03
Chapter 4 Installation in a Hazardous Environment
Verifying Switch Operation
Note If you plan to connect external alarm devices to the alarm relays, go to the “Wiring
the External Alarm Device Relays” section on page 4-32. Otherwise, go to the
next sections.
Add the Ferrite to the Power and Relay Connector Wiring
Before you connect the power and relay connector to the front panel, follow these
steps to add a ferrite to the power and relay connector wiring.
Step 1 Position the opened ferrite around the wiring within 3 inches of the power and
relay connector.
Step 2 Loop the wiring around the ferrite (see Figure 4-10).
Figure 4-10 Wire Looped Through the Ferrite
Step 3
Press the ferrite closed until the clasp snaps shut (see Figure 4-11).
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