When working in CR, CC and CP mode, input current is ascending continuously, the load current will be limited by a current limit circuit, Load will work in the over current protection state , VFD display the information as CC.

When work in CV mode, transition mode and List mode, Input current exceeds the current limit, Buzzer is mooing, VFD display the flashing current value.

Over Power

If the input power exceeds the power limit in the normal operation mode, Load will work in the over power protection state. VFD displays the information as CW.

When work in transition mode and list mode, if the input power exceeds the power limit. Buzzer is mooing, VFD display the flashing current value and voltage value.

Reverse Voltage

This feature protects the load module in case the input DC voltage lines are connected with wrong polarity, if a reverse voltage condition is detected, Buzzer is mooing. VFD display as following:

REVERSE VOLTAGE

Over Temperature

If internal power components ‘s temperature exceeds safe limits (80), Over temperature protection will be activated . Load will turn off the input and Buzzer is mooing, VFD display as following:

OVER HEAT

Remote Sense Function and Trigger Function

When working in CV, CR and CP mode, if load consumes a large current, it will cause depressed voltage in the connection line between the UUT (Unit Under Test) and the load’s terminals. In order to assure testing precision, this DC load provides remote testing terminals in the rear panel. Users could test the output terminals voltage of the UUT through it. Users should set the Load to REMOTE mode before using the function.

4 Pin trigger and remote sensing connectors:

+ _ IN

..

Sense

A

Trigger

B

Remote Sensing: SENSE (+) and SENSE (–)are the remote sensing inputs. By eliminating the effect of the inevitable voltage drop in the load leads, remote sensing provides greater accuracy by allowing the load to regulate directly at the source's output terminals.

18

Page 18
Image 18
B&K 8510 instruction manual Remote Sense Function and Trigger Function, Over Power, Reverse Voltage, Over Temperature