MAN1565-4
40
TERM 4
- +
TONE 1
INPUT
WARNING
SIGN
( MAXIMUM
OF 6 IN
TOTAL )
10K
1. (-) EVAC
2. (-) EVAC
3. (-) ALERT
4. (-) ALERT
5. (+) POS
6. (+) POS
VANTAGE SOUNDER
( ORDER CODE 205-0062 )
10K
FIT 10K EOL TO LAST
SIGN ON CHAIN
AGENT TERMINATION BOARD
RELEASE
-
+
STAGE2
+
-
N/0 C O M
N/0 C OM
+
SYST.
+ -
+ -
STAGE1
-
TB7
TB6
TB5
TB4
MAIN
RESV
+ - Outputs are Monitored
INOP
+ -
TONE 2
TO NEXT WARNING SIGN IF
MULTIPLE SIGNS ARE USED
BRD 42WTB1-A
IN
-
OUT
+
+
-
C O M +
STG1
STG2
TB1
TB3
TB2
NOTE: THE WARNING SIGN
TERMINATION BRD IS MOUNTED
ON THE INSIDE BACK PLATE
OF THE WARNING SIGN
BRD 42WTB2- A
C N 1
C N 2
Figure 33: 2 Wire Cabling from the Agent Termination Board to the Warning Sign/s & Evacuation Device/s
6.19
Occupant Warning Systems
The EV20, EV40 and EV60 are compact single zone occupant warning devices that when triggered produce
Alert
and
Evacuation
signals to meet the requirements of AS1670.4.
EV20
At the heart of an EV20 single zone occupant warning system is a microprocessor that generates the alert and
evacuation signals, controls timing and the input / output.
If an FACP warning system input is received when the rotary switch is in the AUTO position the EV20 will begin to
output the “A
lert
”
signal for a duration determined by the setting of the 4 way DIL switch SW1. The set duration is
termed the changeover timeout and ranges from 0 seconds to a maximum of 300 seconds. If the time out is set to 0
seconds then the alert signal is bypassed and the evacuation signal commences immediately. The operator can
manually stop the sequence by turning the rotary switch to the ISOLATE position.
IC4 performs the task of an audio amplifier with TX1 providing the impedance matching to a 100 volt speaker line. The
alert and evacuation signal output Stages are set by adjusting RV1 and RV2 respectively.
Short or open circuit speaker faults are detected by the fault monitoring circuitry and will result in the illumination of
the FAULT indicator mounted on the front panel control module.
Public Address
A microphone and pre-amplifier (Order Code 222-0007) is used to provide the public address capabilities.
EV20 Verbal Messaging
An optional verbal messaging PCB (Order Code 222-0026) is available and is mounted directly onto the main board.
EV40
At the heart of an EV40 single zone occupant warning system is a microprocessor that generates the alert and
evacuation signals, controls timing and the input / output.
If an FACP warning system input is received when the rotary switch is in the AUTO position the EV40 will begin to
output the
“A
lert
”
signal for a duration determined by the setting of the 4 way DIL switch. The set duration is termed
the changeover timeout and ranges from 0 seconds to a maximum of 540 seconds. If the time out is set to 0 seconds
then the alert signal is bypassed and the evacuation signal commences immediately. The operator can manually stop
the signal sequence by turning the rotary switch to the ISOLATE position.
Amplifier 1 & 2 provides 40watts of audio output at 8 ohms which feeds TX1 to provide the impedance matching to a
100 volt speaker line. The
“ALERT” and “EVAC” Stage controls adjust the output Stage of each s
et of signals.
