Cooper Notification SP40S Series, Installation, Testing, Operation And Maintenance Manual

Page: 45 / 81

Installation
SP40S Multi-Function Communications System 45
4.4.10 Setting Adjustable Audio BGM Sources
NOTE: Use a good multi-meter that provides true RMS readings in the AC voltage scale
and calculates the results through average sampling. Some multi-meters can select instant
or average sampling readings. Always do this adjustment in the “averaging” mode. Most
digital multi-meters use the average sampling method in the “AC Volts RMS” setting.
1. Ensure that power is disconnected from the SP40S panel.
2. Set the Audio Source volume control to the minimum setting.
3. Connect the Audio Source output to the BGM input terminals (TB5) on the panel.
4. Set the multi-meter to the AC Volts scale, which is capable of reading 300mV RMS.
5. Connect the multi-meter across the BGM terminals on the panel.
6. Adjust the output control of the audio source to obtain a reading of 300mV RMS on
the multi-meter.
7. Secure the output control of the audio source so that it cannot be changed
inadvertently.
8. Disconnect the multi-meter. The output of the Audio Source is now correctly set for
the SP40S BGM input.
4.4.11 Installing Alarm, System Trouble, and AC Trouble Output Connections
The Alarm Form C relay contacts change state when a MIC, AUX, or a DV (Digital Voice)
message is active. The AC Trouble Form C relay contacts change when primary power is
missing or low. The System Trouble Form C relay contacts change state when the panel
goes into any trouble condition. For additional information, see Table 4. An AC Loss can be
delayed 170 minutes before it is reported as a system trouble (SW2 – Position 2 set to ON).
1. Connect the external alarm circuit to the proper Alarm (ALM) connections. See
Figure 10
,TB1, Section 1, for location.
2. Connect the external Trouble circuit to the proper Trouble (TRB) connections.
3. Connect the SP40S panel to earth ground, following the National Electrical Code and
local codes for the type of system being installed. Wire gauge selection of the earth
ground wiring involves 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 terminals within the
panel is shown in
Figure 11
.
CAUTION: Do not connect input voltage to any equipment until the field wiring
has been tested, inspected and approved.