NF BP4620, Instruction Manual

Page: 169 / 214

6.2 Protective Functions
BP4620
6-8
6.2.1 Overload
The BP4620 detects overload in the following cases.

The output voltage exceeds the limiter value

The output current exceeds the limiter value

The internal power loss (average, momentary) is excessive

The DCPS average output power is excessive
Upon detection of overload, the BP4620 displays the overload status, as follows.

Upon detection of overload, the
icon flashes and a beep is emitted.

If the overload continues for 10 seconds after overload detection, a beep is emitted and the output
is switched off. An error message, listed in Table 6-4, is also displayed.

If the overload further continues, the power switch is forced off. After the BP4620 is powered back
on, an error message, listed in Table 6-2, is displayed.
6.2.2 Over-limiter
If the DC output voltage measurement value exceeds the maximum value of the set voltage limiter
range or is 3 V or more under the minimum value, over-limiter is judged to have occurred. Upon
detection of over-limiter, the BP4620 displays the over-limiter status as follows.
For how to set the limiter values,
refer to “4.4 Setting of Limiters”
.

A beep is emitted and the output is switched off. An error message, listed in Table 6-4, is also
displayed.

If the limiter values are exceeded during output on operation, the output cannot be switched on. In
this case, the status icon ( ) is displayed and an error message, listed in Table 6-3, is
displayed.