INPUTS
ConTACT Volt-free contacts either normally open or normally closed.
(Each input is individually user programmable)
All inputs are opto-coupled and can be optionally isolated from the
annunciator supply voltage
VOLTAGE Standard voltage input 24V
Optional field contact voltage of 48V, 110V, 125V, 250V
All inputs can be either AC or DC
ConTACT RESISTANCE N/C Series resistance of contact cables 20K OHM maximum
ConTACT RESISTANCE N/O Parallel resistance of contact cables 50K OHM minimum
ALARM ConTACT CURRENT The current through the alarm contact is typically 3mA
INPUT RESPonSE TIME Signals narrower than approx. 30ms at 24VDC will not
trigger the annunciator.
Optional, customer specified response time, is available
FIRST-OUT DISCRIMINATION Better than 5ms
INPUT PROTECTION The equipment is protected against reverse connection of
the power supply. Inputs are protected against 1000V
Megger test between the alarm inputs and chassis/ground
PUSHBUTTONS Integral pushbuttons and terminals for remote fitting
LED TEST
ACKNOWLEDGE
RESET
SYSTEM TEST
MUTE
FIRST-OUT RESET
(NOTE: these remote pushbuttons operate at
24VDC even when the field contact voltage is higher)
OUTPUTS
COMMON RELAYS All systems come with the five common, programmable relays fitted
behind the Pushbutton Module. All are volt-free
These relays consist of:-
Critical Audible Relay (HNA)
Non-critical Audible Relay (HNB)
Critical Group Relay (GRA)
Non-critical Group Relay (GRB)
Multi-function Relay (MUL)
The Multi-function relay can be configured as one of the following:-
Total Group Relay
Ringback Audible Relay
First-out Relay
Power on/Watchdog Relay
All contacts are rated at 2A @ 24VDC

新手教學

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