MD644 - 4-zone fire alarm control panel
The MD644 conventional fire detection and fire warming system for buildings, has been designed in accordance with European Standards EN54-2:1997/A1:2006 and EN54-4:1997/A1:2002/A2:2006 and has the EC-Certificate of Conformity 1134-CPD-106.
The MD644 fire alarm control panel is a compact, non-modular control panel equipped as standard with 4 zones which, in case of a fire alarm or failure, activates a common monitored output and common relay contacts.
The MD644 fire alarm control panel is mounted in a plastic housing. This housing contains the operator console, the power supply and the back-up batteries. The operator console of the control panel is connected to the motherboard via a flat cable.
Each zone has an individual LED indicator for signalling “Fire alarm”, “Fault” and “Zone disabled” and an individual “Zone disable” pushbutton.
The MD644 fire alarm control has 2 operating levels. Both levels are set using a key switch.
In the first operating level, only the green “Alarm silence” and “Test LED” buttons are available.
In the second operating level, the orange buttons “System reset”, “Sounders off” and the push buttons “Zone disable” for the individual disabling of zones are also available.
The MD644 control panel is equipped with a built-in 27V 0.8A+0.25A power supply and contains back-up batteries to keep the system functional in case of a mains failure.
Technical details
| Description | MD644 - 4-zone fire alarm control panel |
|---|---|
| Code | 064500 |
| EC Certificate of conformity | 1134-CPD-106 |
| Declaration of performance (DoP) | DOP-MD644-2013 |
| Materials housing | Plastic base with front console in ABS |
| Dimensions (LxWxD) | 253x327x100mm |
| Mains input voltage | 230Vac 50Hz |
| System operating voltage | 27Vdc |
| Short circuit protection | Fuse 200mA (Fast) per zone |
| Built-in power supply | 27V 0.8A+0.25A |
| Batteries - Type | 2x 12V 2.3Ah - Genesis |
| Quiescent current | 110mA |
| Alarm current | 175mA |
| Auxiliary current consumption | Maximum 200mA |
| Maximum load monitored output | 10 ROSHNI RoLP sounders |
| Tension detection line | 20Vdc ± 2% |
| Open line indication | Current less than 3mA |
| Alarm current | Current between 14mA and 200mA |
| EOL resistors | - Detection line: 2K2 ¼ W - Monitored output: 10K ¼ W |
| Acoustical signals | Continuous signal for fire alarm and fault |
| Common outputs | - 1 double volt free changeover contact ''Fire alarm'' (3A/230Vac – resistive load) - 1 volt free changeover contact (Fail-Safe) “Fault” (1A/30Vdc) - 3 transistor outputs ''Fire alarm'', ''Fault'' and ''Fault power supply'' (50mA inductive load; 80mA resistive load) |
| Common inputs | - 1 input 'Fault wiring acoustical alarm devices' for the connection of the fault signal of an external module with an additional monitored input - 1 test input to activate the fire alarm and/or sounder relay contact - 1 input for the external operation of the remote silence function |
| Alarm output per zone | 1 transistor output (open collector) for the connection of maximum 2 repeater panels or to activate an additonal relay contact per zone (50mA inductive load: 80mA resistive load) |
| Built-in options with requirements according to EN54-2 | Output to the fire alarm devices (output type C) (§ 7.8) |
| Date of manufacture | We refer to the CE marking on the control panel |
| Other technical data | We refer to the document HD0644N05A available for inspection at the manufacturer |
| Notified body | ANPI:1134 |