User manual

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9. “SENSE” FUNCTION (HPS-11560 ONLY)
The HPS-11560 has an automatic voltage control for the rear high-current output. For this, two separate measuring
cables are connected parallel to the connecting cables. The potential drop which occurs on the connecting cables
is measured on these two measuring cables. The laboratory power unit automatically compensates for this voltage
drop so that the actually set voltage is supplied to the consumer.
Proceed as follows for connection:
Always connect the supply cables from the power unit to the consumer rst. Pay attention to correct polarity.
Press the clamp release on the rear SENSE connection inwards with a small screwdriver and insert the cables into
the terminal openings. Check that they are plugged rmly.
Now connect the two “SENSE” cables to the consumer observing the correct polarity. The conductor cross-section
for the “SENSE” cables must be at least 0.34mm2.
Always slacken the connection in the reverse order (rst of all “SENSE” cables and then the connecting cables).
Make sure that you contact the SENSE cables as close as possible to the connecting point of the
consumer. Observe correct polarity.
Never short-circuit the “SENSE” cables.
10. PROTECTIVE DEVICES
The power unit has several integrated automatic protective devices that protect the power unit from damage. The
activated protective devices are displayed with letter codes and the DC output is switched off for safety reasons at
the same time.
When a protective devices is active, the consumer must be switched off and disconnected from
the power unit immediately.
To reactivate the output, switch off the power unit. Wait until all displays have gone out. Switch on the power unit
again. The power unit should work normally again. Where this is not the case, please contact our customer service.