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LST700 SERIES INSTALLATION & MAINTENANCE MANUAL • Approved Document No. DFU7002012 Rev 4
LST700 SERIES FIRE ALARM PANEL
LST700 SERIES CONVENTIONAL FIRE ALARM PANEL
technical specifications
POWER SUPPLY SPECIFICATION
Mains supply voltage
230V 50/60Hz
Mains rated current
350mA maximum
Internal power supply
19V - 28.5V (27 V Nominal). Ripple 7V maximum (battery fault)
Total output current limited to
1.5A @ 230 Va.c.
Supply and battery charger monitored for failure
YES (battery charger is also temperature compensated)
Batteries monitored for disconnection & failure
YES
Batteries protected against deep discharge
YES (Deep discharge cut off approx. 21 Volts)
Max. battery size and type
2 x 12V 3.3AHr VRLA (Valve Regulated Lead Acid) connected in series
Mains fuse
240V 1A HRC ceramic 20mm compliant with IEC (EN60127 PT2)
Battery fuse
1.6A F 20mm compliant with IEC (EN60127 PT2)
Current draw from battery (Mains failed)
1.5A maximum
DETECTOR CIRCUIT SPECIFICATION
Number of circuits
2,4 or 8 depending on version purchased
Max cable length per circuit
500metres
Line monitored for open circuit and short circuit
YES
End of line
0.68
µ
F, 50V Capacitor
Maximum allowable impedance (each conductor)
20Ω
Maximum cable capacitance
0.27
µ
F
Call point resistor value
470 to 680Ω
Max. number of smoke/heat detectors per zone
40
Compatible detectors
Honeywell TC800 Series Smoke & TC5151 Series Heat Detectors
SOUNDER CIRCUIT SPECIFICATION
Number of circuits
4
End of line resistor value
6800Ω 5% Tol. 0.25W (blue, grey, red, gold)
Each circuit monitored for open and short circuit
YES - indicated by common fault.
Alarm voltage
27V maximum, 20V minimum (final battery voltage)
Sounder circuit fuses
Each circuit protected by resetable fuses (200mA min. hold current; 400mA
max. trip current; Approx. 50mA when tripped. Reset when faults removed)
Maximum total sounder output current to all outputs
4 x 200mA = 800mA
Maximum No. of Bells @ 25 mA
32
Maximum No. of electronic sounders @ 20 mA
40 (Sounders must be polarised)
AUXILIARY OUTPUTS
Type
Non monitored open collector transistor.
Max. sink current
30mA each
Max open circuit voltage
27Vd.c.
Reset output
Active during reset cycle
Remote output
Active during any unsilenced fire condition (provided all relevant delays have expired)
Auxiliary output
Active during any fire condition (provided all relevant delays have expired)
Fault output
Active when no faults are present - failsafe to open circuit
24V aux power output (for use with the above)
This output is protected by a resetable fuse (100mA min. hold current).
Fuse resets when fault removed.
AUXILIARY INPUTS
Class Change (makes sounders sound continuously) Connect to 0V to trigger. Max input voltage 27V. (Non-latching).
Alert (makes sounders pulse intermittently)
Connect to 0V to trigger. Max input voltage 27V. (Non-latching).
DIMENSIONS
Physical size and weight
Size = 380 x 235 x 96mm appox; Weight = 1.75kg (without batteries)
OPERATING CONDITIONS
The components are selected to operate within their specification when the environmental conditions outside the enclosure comply
with class 3k5 of IEC 721-3-3 : 1978. Temperature Range: -5 to +40
0
C. Maximum relative humidity: 95%
