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User manual

ManualsBrandsKEITHLEY ManualsLaboratory & Bench PSUsBench PSU (adjustable voltage) 0 - 20 V 0 - 1 A
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6-6 Source-Measure Concepts 2400 Series SourceMeter
®
User’s Manual
Overheating protection
Proper ventilation is required to keep the SourceMeter from overheating. See
“WARNING - CAUTION” located at the beginning of Section 3 for details on main-
taining proper ventilation.
The SourceMeter has an over-temperature protection circuit that will turn the out-
put off in the event that the SourceMeter overheats. If the output trips due to over-
heating, a message indicating this condition will be displayed. You will not be able
to turn the output back on until the SourceMeter cools down.
NOTE Models 2420, 2425, 2430, and 2440 — The cooling fan will run at high
speed while in the overheated state.
CAUTION Models 2420, 2425, 2430, and 2440 — If, after 90 seconds, the
SourceMeter is still overheated, the “OVER-TEMP FAILURE!!!”
message may appear. In that event, turn off the SourceMeter
immediately and allow it to cool for 30 minutes.
With the SourceMeter off, check all the cooling vents to make
sure they are not blocked. DO NOT touch the heat sink as it
may be hot enough to cause burns.
After turning the SourceMeter back on, verify that the cooling
fan is running. If the failure message persists, contact Keithley
to facilitate repairs. Leaving the SourceMeter on with the failure
message displayed may result in damage to the unit.
Overheating conditions
Assuming proper ventilation is maintained, the SourceMeter will not overheat (and
subsequently turn off the output) when the SourceMeter is operating as a source
(not sink) and the ambient temperature is ≤30°C.
Above 30°C, for both source and sink operation, the SourceMeter will not over-
heat if the high power range(s) is not used. For the Models 2400 and 2410, the
high power range is 1A. For the Model 2420, the high power ranges are 20V, 3A
and 60V, 1A. For the Model 2425 and Model 2430 DC Mode, the high power
ranges are 20V, 3A and 100V, 1A. For the Model 2440, the high power ranges are
10V, 5A and 40V, 1A.
NOTE See “Operating boundaries” for details on source and sink operation.