Instruction manual

3-8
5. Connect the multimeter across the BGM terminals on the SP40/2.
6. Adjust the output control of the audio source to obtain a reading of 300mV RMS on the
multimeter.
7. Secure the output control of the audio source so that it cannot be inadvertently changed.
8. Disconnect multimeter. The output of the Audio Source is now correctly set for the SP40/2 BGM
input.
Alarm and Trouble Output Connections
The Alarm Form C relay contacts change state when certain audio inputs are in alarm. The Trouble
Form C relay contacts change state when the panel goes into any trouble condition. See Table 3-1
on Page 3-3 for additional information.
TB3
NO
NC
COM
A
L
M
T
R
B
NO
NC
COM
Section 3
Alarm and Trouble Connections
Figure 3-7
Alarm and Trouble Connections
1. Connect External alarm circuit to the proper Alarm (ALM) connections. See Figure 3-1, Section 3
on Page 3-2 for location. Figure 3-7, above, is an enlarged picture of the referred area.
2. Connect External Trouble circuit to the proper Trouble (TRB) connections. See Figure 3-1,
Section 3 on Page 3-2 for location. Figure 3-7, above, is an enlarged picture of the referred area.
3. Connect the SP40/2 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 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 terminals within the panel is shown in Figure 3-16 on Page 3-21.
CAUTION: Do not connect input voltage to any equipment until the field wiring has been tested,
inspected and approved.
4. Check the integrity of all field wiring. Confirm that the specified cable is installed, and that there is
continuity between required points (no open circuits), with no unwanted shorts to other
conductors, chassis, or earth ground.
a. Verify that the field wiring complies with the instructions of this manual and the detailed wiring
diagram prepared for this installation.
b. Ensure that no unwanted voltages are present on circuit conductors and ground.
c. Test all ungrounded connectors for electrical isolation from ground.
d. Measure and record the resistance of each NAC circuit. Conduct this test reversing polarity.
5. Perform Ground Fault Installation Procedure as described in Section 3-7 (Page 3-19).
6. Calculate and Install properly sized backup batteries as described in Section 3-8 (Page 3-19) and
3-9 (Page 3-21). The SP40/2 is UL approved for 24VDC at 12AH.