Safran SecureSync 2400 User Manual page 546

APPENDIX
gized/de-energized and whether the custom alarm circuit is connected to the
NO or NC contacts.
To use this option card to provide an audible indication of a Minor or Major alarm
being asserted, SecureSync does not pass or generate an audible tone. It is just
the switch that allows the tone to be generated. Or for a visible alarm indication,
the three relays can allow DC voltage to be routed to the light, when an alarm is
asserted.
The best way to think of each of the alarm relays is that they are simply a light
switch on the wall. When the switch is off (relay is in one position) the
light/buzzer is off. But if you toggle the switch (relay) to the other position
(either a Minor or Major alarm is alarm is asserted), the light/buzzer comes on.
When a Minor or Major Alarm is asserted, the applicable relay(s) switches states.
This can then allow a custom circuit to be able to sound an alarm or to illuminate
a light, as desired.
The nominal switch capacity is 30V, 2A (maximums: voltage = 220 VDC, power =
60W, current = 2A). So you can connect any desired audible//visible device or
component to this relay that can operate within this rating (Safran doesn't make
any specific recommendations on what visible or audible alarms to use in con-
junction with this Option Card). Further below is a diagram of ways that a light or
buzzer can be connected to any of the three relays on this Option Card.
Note that any necessary wiring, the light/buzzer and the power source (labeled
in the diagram above as "DC Power Supply") for the light/buzzer is supplied by
the customer. "Relay 1", "Relay 2" and "Relay 3" represent the three available
relays. The three tables on the left provide the pin-outs for each of the relay con-
tact closures.
Alarm Relay Output: Viewing Signal State
To quickly view the signal state of all three alarm outputs, see: "Viewing an
Input/Output Signal State" on page 366.
Each alarm output will be in one of these 3 states:
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