DF8090 Power supply supervision
DF8090 is a module designed for monitoring the DC power supply. It can detect
the conditions listed below, shown on the DF8090 local panel (see Fig. 15) and re-
port them to NK822x, and in turn to management station (see the following):
Mains failure (no 220VAC)
Battery low
Power supply failure (trouble with AC/DC converter)
Battery protection fuse blown (internal micro-fuse type MSF 3.15A/250V)
Fig. 15 DF8090 front panel
See Fig. 18 on page 28 for the NK822x power connections using the power su-
pervision module.
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