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Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 51
Output Circuits Installation
3.6.2 Trouble Relay - TB1
The main circuit board provides a Form-C Trouble relay, for independent monitoring, rated for 2.0
amps @ 30 VDC (resistive) and 0.6 amp @ 30 VAC (resistive). This relay is ‘fail safe’, meaning
that it is normally energized. Should system power shut off, this relay will deenergize, transferring
its contacts. The Trouble Relay can be programmed to track the AC Loss Relay and transfer on AC
loss conditions or ignore AC loss conditions (refer to switch 8 in Table 2.3 on page 34).
3.6.3 AC Power Loss Relay - TB7
The main circuit board provides a Form-C AC Power Loss relay rated for 2.0 amps @ 30 VDC
(resistive) and 0.6 amps @ 30 VAC (resistive).
3.6.4 Notification Appliance Circuit (Speakers)
Each Amplifier Module provides one Notification Appliance Circuit for speakers. The circuit can
be wired Style Y (Class B) or Style Z (Class A). Each supervised and power-limited circuit is capa-
ble of 25 watts of power. The maximum total capacitance for each speaker circuit cannot exceed
250 uF. Refer to the Fire•Lite Device Compatibility Document for a listing of compatible speakers.
Figure 3.10 Trouble Relay
TB1
2
5
5
0
a
c
r
l
.
w
m
f
Shown in energized,
nontrouble condition
Note: Relay connections may be power-limited or
nonpower-limited, provided that 0.25” spacing is
maintained between conductors of power-limited
and nonpower-limited circuits. Refer to Section “UL
Power-limited Wiring Requirements” on page 56.
Figure 3.11 AC Power Loss Relay
TB7
2550acrl.wmf
Shown in energized,
normal AC Power condition
Note: Relay connections may be power-limited
or nonpower-limited, provided that 0.25”
spacing is maintained between conductors of
power-limited and nonpower-limited circuits.
Refer to Section “UL Power-limited Wiring
Requirements” on page 56.
!
CAUTION: OBSERVE POLARITY
MATCH PROPER POLARITY CONNECTIONS TO FIELD WIRING AND SPEAKERS. POLARITY
SHOWN IS IN THE STANDBY AND ALARM CONDITIONS.