Set Over-Power Protection (Opp) - ITech IT-M3900C Series User Manual

4. Press the left/right key or rotate the knob to select On and press [Enter] to
5. Set the protection limit Level and the delay time Delay in sequence, and

4.5.3 Set Over-Power Protection (OPP)

Users can enable the OPP function and set the protection limit Level and pro-
tection delay time Delay. When the power (i.e., the Meter value) is greater than
this protection limit and the delay time is exceeded, the power supply will enter
the OPP state.
Possible Cause
Many reasons can cause OPP, the details are as follows:
•
•
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
2. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to en-
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
5. Set the protection limit Level and the delay time Delay in sequence, and
enter the setting interface.
press [Enter] to confirm.
For bi-directional power supplies, Level can be set to a positive or nega-
tive value, i.e. the same protection limit is set for the output or input
current.
The VFD screen returns to the Protect menu and the OCP setting (take 10A,
1S as an example) is displayed as follows:
PROTECT
2.OCP 10A, 1.000S
The set protection limit Level is lower than the power Meter value.
The power supply outputs a high power due to a fault.
menu. (1U Model)
ter the protection menu. (2U Model)
enter the setting interface.
press [Enter] to confirm.
Copyright © Itech Electronic Co., Ltd.
Power Supply Function
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