8
Operation and Programming Concepts
determine the type of the device. If the device goes into alarm, the panel operates
normally.
• Trouble (T): Sensors: The device is defective and needs to be replaced.
Modules: The extended circuit from the module has a wiring fault. Note: Control
modules that supervise their output circuits are not operated if the output circuit is
shorted.
• Duplicate (D): This means that two devices are using the same address. The MR-2200
does a check every hour for duplicate devices. If either device goes into alarm, the panel
operates normally. Note: Due to the method used to detect duplicate devices, it is
possible for a single device to appear as duplicate devices. Generally, the device needs
to be replaced.
1.5 Resetting 4-Wire Detectors
1.5.1 General
4-wire detectors can be reset by using one of the function relays on the panel. The relay is not
programmed for any use, that is, it is unassigned. The next requirement is that a non-zero
duration be programmed for it (See Outputs Dialog on page 23.) A duration of zero disables
this function. Once this is done, wire the power for the device as shown in Figure 4. A third
party power supply (must be UL/ULC-listed compatible power supply suitable for fire
applications) can be used instead of the Aux Power as shown. Whenever the System Reset
operator key is pressed when neither LED is flashing, causes the relay to operate for the
duration programmed.
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