User manual

27 ACP-2010MB User Manual
Chapter 4 Alarm Board
4.2.2 Switch Settings
The alarm board is designed to connect with up to 7 fans. Users can set the fan num-
ber by adjusting the switch, SW1, on the alarm board.
Table 4.11: SW1, Fan number setting
Fan Number SW 1-1 SW 1-2 SW 1-3 SW 1-4
0 OFF OFF OFF OFF
1 ON OFF OFF OFF
2 (default) OFF ON OFF OFF
3 ONONOFFOFF
4 OFF OFF ON OFF
5 ON OFF ON OFF
6 OFF ON ON OFF
7 ONONONOFF
Note! Connect the fan connectors in the correct sequence: if two fans are set
on SW1, the correct method is to connect them to connectors FAN1 and
FAN2. If the two fans are connected to other fan connectors, out of
sequence, such as FAN1 and FAN3 or FAN2 and FAN3 or FAN3 and
FAN4, instead of FAN1 and FAN2, then the alarm will not function cor-
rectly.