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Specifications
The module connects 2wire fire alarm loops to 4wire intruder-fire control panels and to AC fire alarm control panels.MUSH-3
MODULE
The module is designed to connect 2-wire fire alarm loops equipped with SPD-3, SPD-3.5, SPD-3.10, SPT-2B, SPT-3B, FT and other equal detectors to a 4-wire intruder-fire CP as well as to a AC fire alarm CP.
Screw contacts are used to connect to the module:
- contacts “1”, ‘2”, “3”, “4” – signal loop of FACP, limiting and EOL resistors;
- contacts “5”, “6” – 12 V power source;
- contacts “7”, “8” – 2-wire fire loop.
When a detector in 2-wire circuit triggers, the module issues the FIRE signal by intermittent decrease of resistance (between screw contacts “3”, “4”) in alarm circuit of FACP with the red LED on the module turning on indicating it.
The module issues the FAULT signal detecting the following events:
- open-circuit in 2-wire AL circuit;
- short-circuit in 2-wire AL circuit;
- no 12 V power supply.
The FAULT signal is issued by open-circuit of 4-wire signal line (between contacts “1”, “2” of the module), with the yellow LED on the module turning on.
The module provides limiting of short-circuit current in 2-wire circuit.
Power supply of 2-wire AL can be switched off for a short period by pressing the RESET button.
TECHNICAL SPECIFICATIONS
Input voltage range |
10,2-13,8 V |
Output voltage in standby mode |
9,7-13,6 V |
Voltage drop in standby mode |
<0,5 V |
Short-circuit current in 2-wire circuit |
<20 mA |
Current in 2-wire circuit, the module issuing the FAULT signal |
<3,0 mA |
Current in 2-wire loop in standby mode |
4,5-7,5 mA |
Current in 2-wire circuit, the module issuing the FIRE signal |
8,5-19,5 mA |
2-wire loop resistance (not considering the remote element), the module keeping operating properly |
<100 Ohm |
Max number of smoke/heat detectors per 2-wire loop |
32 |
Standby current consumption |
<20 mA |
Fire current consumption |
<40 mA |
Open-circuit current consumption (2-wire) |
<13 mA |
Short-circuit current consumption (2-wire) |
<31 mA |
Commutated signal loop voltage |
<30 V |
Current drawing between contacts “1”, “2” and “3”,”4” in signal circuit |
<30 mA |
Voltage drop on contacts “1”, “2” and “3”,”4” at 20 mA |
<1,6 V |
Resistance between contacts “1”, “2” and “3”,”4” in FAULT mode |
300 kOhm |
Dimensions |
70x70x30 mm |
Weight |
50 g |
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