Power Supply Function
Possible Cause
Many reasons can cause OPP, the details are as follows:
• The set protection limit Level is lower than the power Meter value.
• The power supply outputs a high power due to a fault.
How to Set
The operation steps to set OPP are as follows.
1. Press the composite keys [Protect] on the front panel to enter the protection
menu. (1U Model)
2. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to en-
ter the protection menu. (2U Model)
3. Rotate the knob to select 3. OPP (Off) and press [Enter].
4. Press the left/right key or rotate the knob to select On and press [Enter] to
enter the setting interface.
5. Set the protection limit Level and the delay time Delay in sequence, and
press [Enter] to confirm.
The VFD screen returns to the Protect menu and the OPP setting (take
0.15KW, 1S as an example) is displayed as follows:
PROTECT
3.OPP 0.15KW, 1.000S
4.5.4 Set Under-Current Protection (UCP)
Users can enable the UCP function and set the instrument warm-up time
Warm-up, protection limit Level and protection delay time Delay. When the cur-
rent (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 UCP state.
Possible Cause
Many reasons can cause UCP, the details are as follows:
• The set protection limit Level is greater than the current Meter value.
• The external (AC input) inputs a lower current.
• The power supply outputs a low current due to a fault.
How to Set
The operation steps to set UCP are as follows.
Copyright © Itech Electronic Co., Ltd.
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