LT-2020 MR-2944 Installation and Operation Manual Rev.1 - Secutron

MR-2944 Installation and Operator’s Manual1.0 Technical Information1.1 GeneralThe MR-2944 Annunciator Driver is capable of controlling up to 576 LEDs, as 192 zones of 3LEDs each (Alarm, Supervisory, Trouble), for use with columnar or graphic annunciators. Twooptional LCD displays are available, an 80 character (4 x 20) display the same size as the MR-2900 LCD display and a larger display twice that size. Both can be used to display text messages.The MR-2944 uses the MR-2910 Network Communications Board for network interface. The MR-2944 can use all variants of the MR-2910 board. The MR-2944 may also use the MR-D1010RFiber Optic Modem for connecting a fiber network between panels.The MR-2944 uses the AN4 program for connection to MR-2900 and MR-2100/2200 networks andthe AN4A program for connection to MR-2400 panels. All programs are nearly identical inoperation, but the AN4A program may not be used to create a fiber optic network.The LEDs are interfaced to the Annunciator Driver using the MR-2902 Annunciator Strip, the MR-2622 Annunciator Strip or the MR-2915 LED Driver.Communication to the MR-2900 Control Unit is over a proprietary DCLR (Style 7) network. Thereare two communications ports (COM1 and COM2). These ports are identical to the network portson the MR-2900 Control Unit. Wiring for standard network communications is not polaritysensitive. RS-232 network communications is polarity sensitive.There are two versions of annunciator enclosures:• MR-2944, the annunciator board enclosed in cabinet (not applicable for ULC installationfor annunciator application• MR-2944-ANN, the annunciator board on mounting chassis. The MR-2944-ANN may beenclosed in the MR-2944-BBS 4 LED strip or MR-2944-BBL 8 LED strip annunciatorenclosures or, when used for graphic displays, may be enclosed in the custom graphicannunciator.1.2 MR-2915 LED DriverThe MR-2915 Graphic LED Driver drives up to 24 LEDs. There is a 50 pin connector to which theLEDs of a pre-designed custom graphic LED display are attached.1.3 MR-2902 Annunciator StripThe Annunciator Strip contains 24 sets of zone indicating LEDs. Individual LEDs are provided todisplay alarm, supervisory and trouble conditions by zone. The LED functions, from the left, are:Alarm (red), Supervisory (yellow or amber) and Trouble (yellow).1.3.1 MR-2902-ANN Standard Strip complete with mounting bracketThe Annunciator Strip contains 24 sets of zone indicating LEDs. Individual LEDs are provided todisplay alarm, supervisory and trouble conditions by zone. The LED functions, from the left, are:Alarm (red), Supervisory (yellow or amber) and Trouble (yellow).1.3.2 MR-2902-ANN-HTLD Common Indicator Strip complete with mountingbracketSimilar to MR-2902 except Zones 21 to 24 reserved for LED annunciation of FACU commonindicators.Strip to be installed in annunciator back boxes MR-2944-BBS or MR-2944-BBL. Special MHIconfiguration is needed to map the Fire Alarm Control Unit common indicators to the reserved MR-2902-HTLD zones.1