24
Dual Audibles And Dual Horn Relays
Two audible alarms and two horn relays designated critical and non-critical are fitted to the SPR card
as standard.
FUNCTION CRITICAL HORN NON CRITICAL HORN
Alarm Card Channel SPR Card Alarm Card Channel SPR Card
1 - 2 3 - 4 1 - 2 1 - 2 3 - 4 1 - 2
SW4.S7 SW6.S7 SW5.S5 SW4.S8 SW6.S8 SW5.S6
Enable ON ON ON ON
Disable OFF OFF OFF OFF
Table 14
The Audible Alarm Relay Contact can be set to N/O or N/C as follows:-
Please note:- LK4 and LK5 refers to the 3 pin headers and 2 way shorting links located on the SPR
card used to select the contact state.
FUNCTION SET CRITICAL HORN RELAY NON CRITICAL HORN RELAY
Normally Open N/O
RL4 LK4 RL5 LK5
Normally Closed N/C
Table 15
Integral Horn Disable
The two integral horns designated critical and non-critical fitted to the SPR card can be enabled or
disabled using the following configurations:-
CARD CRITICAL HORN NON CRITICAL HORN
SPR
SW6.S4 SW6.S3
Enable Disable Enable Disable
ON OFF ON OFF
Table 16
Auto-Acknowledge Feature
The critical and non-critical horns / horn relays can be automatically acknowledged after a pre-set time
period using the following configurations..
CARD SWITCH DELAY TIME BEFORE AUTOMATIC ACKNOWLEDGE
SPR
Disabled 15 seconds
50 seconds 170 seconds
SW6.1
OFF
ON OFF
ON
SW6.2 OFF ON
Table 17
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