Set Under-Voltage Protection (Uvp) - ITech IT-M3900D Series User Manual

1. Press the composite keys [Protect] on the front panel to enter the protection
2. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to en-
3. Rotate the knob to select 4. UCP (Off) and press [Enter].
4. Press the left/right key or rotate the knob to select On and press [Enter] to
5. Set the warm-up time Warm-up, protection limit Level and delay time Delay

4.5.5 Set Under-Voltage Protection (UVP)

Users can enable the UVP function and set the instrument warm-up time
Warm-up, protection limit Level and protection delay time Delay. When the
voltage (i.e., the Meter value) is lower than this protection limit and the warm-up
time, delay time are exceeded, the power supply will enter the UVP state.
Possible Cause
Many reasons can cause UVP, the details are as follows:
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•
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How to Set
The operation steps to set UVP are as follows.
1. Press the composite keys [Protect] on the front panel to enter the protection
2. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to en-
3. Rotate the knob to select 5. UVP (Off) and press [Enter].
4. Press the left/right key or rotate the knob to select On and press [Enter] to
menu. (1U Model)
ter the protection menu. (2U Model)
enter the setting interface.
in sequence, and then press [Enter] to confirm.
The VFD screen returns to the Protect menu and the UCP setting (take 10S,
0.1A, 1S as an example) is displayed as follows:
PROTECT
4.UCP 10S, 0.1A, 1.000S
The set protection limit Level is greater than the voltage Meter value.
The external (AC input) inputs a lower voltage.
The power supply outputs a low voltage due to a fault.
menu. (1U Model)
ter the protection menu. (2U Model)
enter the setting interface.
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Power Supply Function
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