ITech IT6900 Series - 3.10 OVP Function

Function and Features
Copyright ©ITECH Electronic Co., Ltd. 24
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3.10 OVP Function
IT6900 series power supply provide OVP function, press +
V
-
set
V
-
set
button
can enable you to set the over voltage protection value. Over voltage may
caused by internal defect or customer’s incorrect operation(such as output
voltage rising),or external voltage too high. Once power supply is
protected(OVP), the output will be off immediately and “OVP” indicator light will
be lit, the VFD display “OVER VOLT”.
Avoid external voltage that across the output terminals exceeding the 120% of
rated voltage or it will damage out power supply!
When power supply in OVP state, please check the external factors first, after
you exclude the external factors, press ON/OFF button to open output again. If
in communication state originally, you should by sending order OUTP ON order
to open output.
3.11 Key Lock
Press +
On/Off
(Lock) button to set the key lock state. If keyboard has
been locked, the indicator light LOCK will display on the VFD screen. In
addition, when key board are lock, all buttons can’t be used but ON/OFF, Meter
button, shift button. Press this button once again will relieve key lock function.
3.12 Rear Pins Function
3.12.1 Remote sense and DVM terminals
 +, - : output terminals, the same with front panel output terminals.
 S+, S-: remote sense pins.
 V+, V-: the output interface of a four semi-digital voltmeter. (The actual
terminal position on the rear panel of IT6952A/IT6953A/IT6952B/IT6953B
is subject to the actual product. The above figure is only used as an
example to introduce the terminal function.)