Power Supply Function
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 left side of the second row shows the specific protection information
(such as overvoltage protection OVP), the right side shows the duration of
the protection (hour: minute: second) and the number of protection informa-
tion in the message queue and the total number of protection information.
Users can turn the page through the knob to view all the protection
information.
Clear the Protection
After the instrument triggers protection and generates a protection message,
you need to troubleshoot the possible cause. When the protection is resolved,
the VFD will still prompt the protection information. You can manually clear the
protection information record through the following methods.
• Input a pulse signal to pin 1 of the rear panel P-IO to clear the protection
information.
For details, see 5.11.1 IO–1. Ps-Clear, Not-Invert.
• Press the [Esc] or [Enter] key on the front panel to manually clear the pro-
tection information.
• Connected to the host computer, the PC sends a PROTection:CLEar com-
mand to the instrument to clear the protection information.
After the protection is cleared, you need to press the [On/Off] key on the front
panel or send the OUTPut ON command to the instrument to reopen [On/Off].
Copyright © Itech Electronic Co., Ltd.
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