Set Over-Current Protection - Cal Power IT-M3400 Series User Manual

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Clear OVP Protection

When over-voltage protection occurs, the instrument responds as follows:

•

To clear the over-voltage and return to normal operation, firstly remove the

conditions that caused the protection fault. Press [Esc] key (or send the

command PROTection:CLEar) to clear the protection status. The "Over Voltage

Protect" displayed in front panel is cleared and the instrument exits OVP status.

6.2 Set Over-Current Protection

Over-current protection function allows the user to enable the protection and set

a over-current limit (Level) and delay time (Delay). This function prevents the

output current from being higher than the limited output current and protects the

connected DUT so it this is not over-current and possibly damaged due to an

excessive current.

An over-current protection will occur if:

•

Enable OCP

1. Press [Shift]+[R-set](Protect) to enter Protect menu interface.

2. Rotate the knob to select OCP and press [Enter] key to confirm.

3. rotate the knob to select On and press [Enter] key to confirm.

4. Rotate the knob to adjust the over-current limit Level and press [Enter] key

5. Rotate the knob to adjust the delay time Delay and press [Enter] key to

6. Press [Esc] to exit.

Delay time

You can specify an OCP delay to prevent momentary output settings, DUT and

status changes from tripping the over-current protection. In most cases these

momentary conditions would not be considered an over-current protection fault,

and having an OCP condition disable the output when they occur would be a

Instrument output is off;

The buzzer sounds;

The interface displays "Over Voltage Protect" and flashes

Status register, the OV status bit is set to 1.

Enable OCP;

The output current value is greater than the set current protection point

Level and the period is greater than the set protection delay time Delay.

to confirm.

confirm.

Protect Function

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