NF BP4620, Instruction Manual

Page: 168 / 214

6.2 Protective Functions
BP4620
6-7
6.2 Protective Functions
The BP4620 has the protective functions listed in Table 6-5. If the power is interrupted by a protective
function at a time other than power failure, the cause is recorded and an error message (described in
“6.1.2 Protective function related errors”) is displayed the next time the BP4620 powers on.
Table 6-5. Protective Functions
Protection Type
Action upon Detection
Action upon Detection
Output off Power off
Overload protection
(overload)
Yes
Not while
overload
continues
The output is switched off at the same time that a beep is
emitted if the overload continues for 10 seconds after
detection.
OVERLOAD is displayed while overload continues.
(
refer to “6.2.1 Overload”
)
Overload detection anomaly
Yes Yes
The power is switched off upon detection of overload,
regardless of whether the output is off.
An overload protection error message is displayed the next
time the BP4620 is powered on.
(
refer to “6.1.2 Protective function related
errors”
)
DCPS anomaly
Yes Yes
The output and the power are switched off upon detection.
A DCPS anomaly error message is displayed the next time the
BP4620 is powered on.
Overheat protection
Yes Yes
The output and the power are switched off upon detection.
An overload protection error message is displayed the next
time the BP4620 is powered on.
Power failure
Yes No
The power is switched off upon detection.
An error message is displayed and the system is locked upon
detection of a power failure.
Measurement protection
(over-limiter)
Yes No
The output is switched off while a beep is emitted if the DC
current voltage measurement value exceeds the voltage limiter
range.
If the above conditions are exceeded during output operation,
the output cannot be switched on.
(
refer to “6.2.2 Over-limiter”
)
Boot anomaly
Yes Yes
The output and power are switched off upon detection.
A reset anomaly error message is displayed the next time the
BP4620 is powered on.
Reset anomaly
Yes Yes
The output and power are switched off upon detection.
A reset anomaly error message is displayed the next time the
BP4620 is powered on.
Operation panel anomaly
Yes Yes
The output and power are switched off upon detection.
An operation panel anomaly error message is displayed the
next time the BP4620 is powered on.