PSU Series User Manual
130
4. Press the Output key. The
current can now be
controlled with the
External resistance.
Ensure the resistor(s) and cables used exceed the
isolation voltage of the power supply. For example:
insulation tubes with a withstand voltage higher than
the power supply can be used.
When choosing an external resistor ensure the resistor
can withstand a high degree of heat.
CV and CC Slew Rate Priority are disabled for V-I mode
(F-03) when using external resistance control. See the
normal function settings on page 101.
External Control of Output
The output can be turned on or off externally using
a switch. The analog control connector can be set
to turn the output on from a high or low signal.
The voltage across pins 19 and 20 are internally
pulled up to +5V ±5% @ 500uA with 10kΩ pull-up
resistor. A short (closed switch) produces a low
signal.
When set to High = On, the output is turned on
when the pins 19-20 are open.
When Low = On, the output is turned on when
pins 19-20 are shorted.
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