Load Function
Warm-up
Indicates the instrument
warm-up time. This time is
set to prevent the instrument
from triggering protection
when the voltage is rising.
Because this transient condi-
tion should not be considered
as an undervoltage fault and
there is no need to trigger
protection.
Protection Delay
You can specify an OCP/OPP/UVP delay to prevent momentary output settings
and status changes from tripping the protection. In most cases these momenta-
ry conditions would not be considered an protection fault, and having an OCP/
OPP/UVP condition disable the output when they occur would be a nuisance.
Specifying an protection delay (Delay) can ignore these momentary changes
during the specified delay period. Once the delay time has expired and the pro-
tection limit condition persists, the output will shut down.
Protection Prompt
When the instrument enters the protection state, the buzzer sounds (if Beep
menu item is set as default state On), the VFD status indicators Prot and Off
are lit, and [On/Off] is turned off.
Although [On/Off] is turned off, there may be dangerous voltage
at the output electrodes. Do not touch the wiring cable or the
electrode terminals.
When protection is generated, the VFD screen displays the following
information:
• The first row shows the meter voltage and the meter current value.
• The second row shows specific protection information, such as OCP.
Clear the Protection
After the instrument triggers protection and generates a protection message,
you need to troubleshoot the possible cause. When the cause is cleared, the
VFD will still prompt the protection information. You can manually clear the pro-
tection information record through the following methods.
Copyright © Itech Electronic Co., Ltd.
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