Cooper Wheelock SAFEPATH SPB-160, Инструкция по установке, испытаниям, эксплуатации и техническому обслуживанию

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Chapter 4: Installation
Series SPB Audio Boosters Manual, Revision A
4-12
Expansion Out and
Trouble Contacts
Figure 4-9 Alarm and Trouble Connections
The Trouble relay changes state whenever a trouble condition occurs on the Audio Booster circuit
board and when the TROUBLE LED D73 lights. As shown in Figure 4-14, connecting to the
common terminal (C) and the normally open terminal (NO) would prevent current flow through
the relay contacts in the normal operating condition. A trouble condition causes the relay to
switch states, allowing current to flow. When there is no power (DC IN or BATTERY) the
common and normally open contacts are shorted.
1. If required, connect the Expansion Out. Ensure that a UL Listed 10K Ohm 1/2W EOLR
is connected for supervision.
2. Connect External Trouble circuit to the proper Trouble (TRB) connections.
3. Connect the panel to earth ground, following the National Electrical Code (NEC) and
local codes for the type of system being installed.
Wire gauge selection of the earth ground wiring should involve consideration of all
factors, including maximum allowable wire resistance and length. The panel is tied to
earth ground by connecting the ground terminals to an earth ground. The location of the
ground terminal strip within the panel is shown in Figure 4-23 for both the SPB-160 and
the SPB-80/4.
4.2.8 Installing Power and Battery Connections
Wiring to the DC IN is factory installed from the Power Supply Module (SPB).