Redback® Proudly Made In Australia
4
Fig 3.4
3.3 Closing Contacts:
These contacts “close” when the corresponding output zone is set “ON”.
(Note: these relay contacts are voltage free and have a rating of 1 amp).
These can be used to trigger devices such as the Redback A 1741 MP3 Message player, which require a closing contact
to activate. Or they could be used to trigger external relays to switch power to external devices.
Fig 3.4 illustrates an example of connecting the S 0080 to the triggers of an A 1741, and also using an S 4455 high cur-
rent relay box to switch an external power supply.
A 24V DC plugpack is used to power the S 0080 and another to power the A 1741, although a single 1A 24V DC supply
would be sufficient to power both.
In the example shown the Zone Output 1 closing contact of the timer is connected to the Input 1 trigger of the A 1741
message player. When Zone1 is activated by the timer, the normally open contact closes and triggers input 1, subsequently
playing message 1 of the message player.
With the addition of the Redback S 4455 10 amp relay box we can switch as external supply to power a high current
drawing device. The S 4455 can be set to 12/24/48V operation (in this case we have set it to 24V) via the on board jump-
er. We then use ouput 4 of the timer to switch the positive side of the 24V supply, to power the S4455 relay box. The 24
V in this case is being piggy backed off the supply from the timer (but a separate power supply could be substituted).
Hence when output 4 is triggered by the timer, power is applied to the S 4455 relay box. The normally open contact on
the S 4455 therefore closes and power is then switched from the external supply to the external device (in this case a
pump, solenoid, etc).
S 4455 Relay Box
Voltage Free Contacts
N/O1
N/C1
COM1
N/O2
N/C2
COM2
DC Input
Voltage
+
Rela
y On
DC Voltage
Selector
12V
24V
48V
4
L
R
Line Out
12-30V DC
Switched
Out
12-30V DC
IN
1
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1 2 3 4 5 6 7 8
2
3
5
6
7
8
Alert
Cancel
DIP Switch Settings
ON
OFF
1
Triggers momentary
Triggers alternate
2
Alert/Evac ON
Not Used
SW
TRIGGER OPERATION & ALERT/EVAC SETTINGS
DIP Switches
Evac
Triggers
Close
Contacts
to
Trigger
5
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
6
0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
7
0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
8
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
Delay
(Sec.)
O
FF
30
60
90
120
150
180
210
240
270
300
330
360
390
420
450
AUTO ALERT TO EVAC SWITCHOVER TIMER SETTINGS. 0 = OFF. 1 = ON.
SW
3
Front switches active
Front switches de-activated
4
Alert/Evac OFF
+ –
+
-
1 2
3
4 5
6
7 8
24V DC Plugpack
(such as M 8968B)
S 0080
50 EVENT TIMER
A 1741
MP3 Message Player
S 4455
10 Amp 12/24/48V
Relay box
External
24V DC Supply
+24V
GND
_
_
7 Day 24 Hour Timer
Menu
Up
Down
Enter
+10
ZONE MODE
Manual Mode
Auto Mode
Press Zone buttons to
change Zone Mode
S 0080
24VDC
Input
24VDC
Input
+
-
DIP Switches Under
Zone 1
Zone 2
Zone 3
Zone 4
OUTPUT 4
OUTPUT 3
OUTPUT 2
OUTPUT 1
N/O
N/C
COM
N/O
N/C
COM
N/O
N/C
COM
N/O
N/C
COM
Output relays
1 amp rating
24V DC Plugpack
(such as M 8968B)
Output relays
10 amp rating
Pump,
Solenoid,
etc
