Function and Features
Copyright © Itech Electronic Co., Ltd. 29
Over voltage protection (OVP)
IT6700 series power supply provide OVP function, press (Shift) +
button can enable you to set the over voltage protection level. Over voltage
may caused by internal defect or customer’s incorrect operation(such as output
voltage rising),or a too high external voltage. Once OVP function is triggered,
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.
Over current protection (OCP)
Over current protection feature allows the user to set an over current protection
point, when the current in the circuit is larger than the current protection point,
the power supply will enter OCP protection. Over current protection, power
output will be off, and accompanied by the chirping of the buzzer, the VFD mark
Prot will be lit, and the emergence of "OVER CURR" alarm
The operation to set the OCP point:
1. Press (Shift) + (Menu) button to menu.
2. Press 、 to overturn to OCP SET, press button to confirm.
3. Press 、 to select ON, press to confirm.
4. Set OCP point by pressing numeric keys, then press . At last,
press to escape.
NOTE
The IT6722A power supply has no OCP function.
Over temperature protection(OTP)
When internal power device is higher than about 85 °C, the power is under
temperature protection. At this time, the power will automatically be OFF and
VFD will display OTP.
3.11 Key Lock function
Press (Shift)+ (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 Remote sense function
Remote sense can adjusted at the output voltage of the device under test, this
feature allows to compensate the voltage drop on the wire between the front
panel terminals of the power supply and the device under test.
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