Instruction manual – AP901 Arc Protection Unit
12 (39
)
A1017B
3.5
D
IPSWITCH SETTINGS
AP901 functionality such as tripping logic is configured using dipswitch settings. Different trip
schemes can be easily programmed by selecting the appropriate dipswitch positions. This
gives users the flexibility to change settings dependent on application. Tripping may be
selected based on arc light only or arc light and current thresholds (or other tripping criteria
such as undervoltage, or similar). Current threshold or other tripping criteria may be applied to
binary input BI1 for blocking trip caused by natural light sources. Also the CBFP scheme may
be enabled using the dipswitches. Dipswitches are located at the back of the unit for easy
access. See Figure 3-1: AP901 dipswitches and Table 3-2 AP901 dipswitch setting selection
for details of settings.
Figure 3-1: AP901 dipswitches