Edwards Signaling ANS Audio Notification System - Manual (Page 5)

P/N 3101179 • REV 03 • REB 28FEB13 5 / 12
Note: To use this option, you must remove jumper shorting
blocks A and B from J1. See Figure 7 for connection details.
Expander installation
The Expander is a self-contained amplifier, tone generator,
power supply, and supervisory interface. It is designed to be
used in conjunction with the ANS to provide additional speaker
output power. An Expander can also be used as a stand-alone
audio notification system, in conjunction with a fire alarm
control panel, to provide voice evacuation where an automatic
message is not desired. See Table 1 for a list of Expander
model numbers and descriptions.
Installation and operation of the Expander is identical to the
ANS with the exception that no digital message is present.
When used in conjunction with an ANS, the expander acts as a
slave, reproducing the tone and message generated by the
master. When used as a stand-alone system, the expander
connects to the FACP exactly as the ANS does, to provide
automatic tone in alarm and voice override capability with the
microphone.
Expander terminal designations and volume controls are
identical to those for the ANS, but DIP switch configuration
differs. The Expander has only one DIP switch, SN1. This
determines tone, master/slave, battery, and microphone
settings.
The following table shows the settings and descriptions for
switch SN1. Note that the factory settings are for slave
configuration.
Table 7: SN1 settings for master and slave
Switch
Master Slave Description
SN1-1 Off Off Temporal whoop signal
SN1-2 Off Off
SN1-3 Off Off
SN1-4 Off Off Not used
SN1-5 Off Off Not used
SN1-6 On Off Master / slave
On = Master
Off = Slave
SN1-7 On On Batteries connected
On = Yes
Off = No
SN1-8 On Off Microphone connected
On = Yes
Off = No
Operation
When the ANS is in normal (standby) state, the green LED
stays on.
When the ANS is in an alarm state, the red LED turns on and
stays on as long as the unit is in alarm. The green LED also
stays on in the alarm state.
When using the factory settings, operation is as follows.
Alarm audio: Alarm signal 5 seconds - digital message plays -
alarm signal 5 seconds - digital message plays - alarm signal
5 seconds - digital message plays - unit reverts to alarm signal
until the alarm condition is cleared. If the microphone is keyed
it will override both the tone and the message so a direct
broadcast can be made. If this occurs during the initial
sequence the digital message will be reset and will not play.
When the microphone is keyed or when the message is
played, the green LED dims. The intensity of the green LED
varies with the level of the broadcast audio. This is true in
alarm state as well.
When the ANS is in a fault state, the yellow LED turns on and
stays on. The green LED flashes. The flashes are coded so as
to indicate the specific type of fault. When there is a fault
condition, the contact connecting the FACP signal circuit to the
EOLR opens, indicating the fault to the panel, which then
provides annunciation.
During a ground fault condition, the second yellow LED (LED4)
turns on.
Trouble codes
When the ANS enters the trouble state, the yellow LED turns
on and stays on until the trouble is cleared.
The green LED flashes, using a code to indicate the specific
type of fault. This code repeats with a pause between
repetitions. When multiple trouble conditions occur at the same
time, the codes are added together.
The number of flashes and the associated trouble conditions
are listed below.
Table 8: Trouble codes
Code
Trouble
1 Power failure
2 Open speaker circuit
4 Shorted speaker circuit
6 [1] External trouble / ground fault
8 Amplifier trouble
16 Microphone trouble
32 Battery trouble
[1] 6 flashes typically indicates an external trouble (such as trouble with
an ANSREM). However, when LED 4 is also on, 6 flashes indicates a
ground fault.
If both a ground fault condition and an external trouble occur
simultaneously, the fault codes do not combine to create a 12-flash
code.