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Amended: Jan 2014
4 Way Sounder Control Unit (MPU 424)
The MPU 424 is designed to accept 4 conventional sounder circuits with a total rating of 3.2A spread
equally over the 4 outputs. This unit takes 1 address on the DF6 system and has its own power
supply and battery backup.
Each individual circuit can have the same programming as a single loop sounder output.
The only criteria being that a delay can ONLY be put on stage 1 of channel 1.
MARDF6
Because the loop output devices cannot be programmed for fault, the MARDF6 was designed to
provide a fault relay with dry contacts for use with an Autodialler or Redcare that requires a fire and
fault signal.
This unit connects across the FRE or FPE outputs and the Fault output. The internal 24v supply in the
panel powers the unit.
Spur Isolator- MSI850
This unit is designed to accommodate a Spur of addressable devices but does not take an address
itself. If the unit is installed at the outset the panel autolearns up to this device autolearns the spur and
then carries on with the remainder of the loop. The spur isolator can also be added after the panel has
been autolearned but any devices on the spur MUST be added ONE AT A TIME.
If all devices are run off a number of Spur isolators, then one single device MUST be fitted on
the loop between the last isolator and the return run to the panel. (If this is not done then
‘Short circuit far’ will be displayed on the panel)
Beam Detector MAB50/100R
The reflective beam detector uses one address on the system. Initially the unit is autolearned and
then aligned using the Dill switches on the rear of the unit.
The device mode switch is set to run mode by default and the detector will not learn to the
panel if set to any other position.
Set the 3-
position switch is set to position 1 ‘Prism target Mode’ align to the prism using the
thumbscrews. Once the prism has been correctly targeted the prism MUST be covered to ensure the
device is not receiving reflections from other sources.
Set the switch to position 2 ‘Alignment Mode’ and fine-tune the alignment using the thumbscrews.
Finally, once fully alig
ned, set the switch to position 3 ‘Run Mode’ and reset the fire panel
Repeaters
Repeater panels can either be Loop connected taking one address in the number sequence, or
connected via the network, in which case the repeater will be fitted with a Network card.
The loop repeater has functionality limited to sound/silence alarms or reset the system. The internal
buzzer can now be muted from the main or a networked panel (added Aug 2010)
The supervisor access code (2214) can be disabled or changed using the engineer menu (2132).
The Loop repeater must have the same text downloaded into it as the main panel it is connected to.
This is achieved by connecting the laptop to the repeater using the same download cable as the main
panel, using the engineer code t
o ‘Download DF6000 text’.
This text information is stored in the Display pcb, whereas the device address is stored in the Psu
board.
