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Configure Protection Settings
The electronic load has the following protection functions: Overvoltage protection (OVP),
overcurrent protection (OCP), overpower protection (OPP), overtemperature protection (OTP),
and local and remote reverse voltage protection (LRV/RRV).
The instrument will act appropriately once any of the above protections are active. You can
press any button on the front panel to restore the protection function. For example, if the
electronic load triggers the overtemperature protection, the buzzer will alarm, the input will
automatically turn off, and the mainframe VFD will display OTP.
Some OCP and OPP features can be configured from within the Protect menu. To access this
menu, go into CONFIG menu and select Protect. The following display will show:
Overcurrent Protection (OCP)
The electronic load includes both hardware and software overcurrent protection features.
Hardware OCP - The electronic load’s maximum input current will be limited to approximately
110% of the current range. Once the hardware OCP is triggered, the status register’s OC bit will
be set. When the hardware OCP is removed, the status register’s OC bit will be reset. Hardware
overcurrent protection will not affect the electronic load’s input on/off state.
Software OCP - Users can set the electronic load’s software OCP value with the following steps.
1. Go to CONFIG menu and select Protect. Then press .
2. Select A-limit and press .
3. To enable software OCP, select On and press . The default is Off.
4. If enabled (ON), the load will prompt to enter a value for Point. Use the numeric keypad
or rotary knob to enter the OCP current limit value, then press . The valid range
depends on the model of the load.
Max-P A-Limit P-Limit Time
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