Sense Abnormal Protection Function; Over-Temperature Protection - Cal Power IT-M3400 Series User Manual

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6.7 Sense abnormal protection function

When the Remote Measure Function (Sense Function) is enabled, after the in-

strument's On/Off switch is turned on, automatically detect the wiring conditions

of the Sense+ and Sense- terminals on the rear panel. If the Sense interface is

not connected or reversed connected, the instrument would make judgment

based on the measured voltage data. When the voltage difference between the

local voltage and remote voltage is greater than a certain value and such condi-

tion continues for a period, the instrument would report Sense abnormal protec-

tion and turn off the output. The output voltage is subject to local voltage, and

the instrument interface would prompt "Sense Protect". This protection can pre-

vent the instrument from outputting high voltage when the Sense terminal is not

wired or when the line is loosened or reverse-connected under Remote Meas-

ure state, which may damage the DUT.

The Sense Protect will be triggered when the instrument state meets the follow-

ing conditions.

•

The Sense reverse protection is always enabled, and the user does not need to

set up or turn on it. In the case of Sense reverse protection, On/Off is turned off.

The user needs to check the wiring conditions of the Sense+ and Sense- termi-

nals on the rear panel, and eliminate abnormal conditions. Press [Esc] key (or

send command PROTection:CLEar) to clear the protection state. The "Sense

Protect" on the front panel of the instrument disappears, and the instrument ex-

its the Sense abnormal protection status.

An Over Temp Protect will occur if:

•

The Sense Measure function is enabled in the Sestem menu.

On/Off is turned on;

The voltage difference between the local voltage measured by the instru-

ment and the remote voltage exceeds the specification value internally set

by the instrument;

The internal temperature of the instrument exceeds 85 degrees

Fan fault

The failure of internal temperature sensor.

Protect Function

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