Brooks BOWS020W, Руководство по эксплуатации и техническому обслуживанию

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OWS Standalone Manual
MA380 - Rev. 2.4
9
3.3 OWS Main Control Board SUB860
The PCB layout of the OWS main control board is shown in Figure 3 and terminals description is shown
in Table 4. The physical picture of the main OWS control board SUB860 with 120W amplifier board
SUB866 mounted on top is shown in Figure 4.
Figure 3 OWS Main Control Board Layout
The display board SUB925 is mounted behind the decal label on the front face plate of the standalone
OWS series and connected to the main board SUB860 via a 20 way ribbon cable.
The connection diagrams of the main control board connected to different amplifiers is shown in Chapter
5 “BLOCK Wiring Diagrams” page 23.
3.3.1 OWS Tones and Messages
The standard format of the OWS provides T3 evacuation tone and message in alarm conditions. The
alert tone / message can be activated manually from the OWS Front Display. Alternatively, it can in auto
mode be configured to activate the alert tone / message followed by T3 (or AS2220) evacuation tone /
message after a pre-set time delay. When used in NZ, the DIP switch S6 must be in the ON position to
provide AS2220.1 tone as required by NZS5412. The pattern, frequency and time of each tone are
described in Table 3 below. The standard evacuation and alert Messages are also shown in the same
table.