ACS-CONTROL-SYSTEM GmbH
l Lauterbachstr. 57 l D-84307 Eggenfelden l www.acs-controlsystem.de l [email protected]
11
Signal 0…10 V
A load resistor, e.g. the measuring shunt of an evaluation device, requires at a definitive output
voltage an output current. Due to the limitation of that output current, it results in a minimum value
for this resistor, where a correct function is still possible.
This resistor can be calculated by the following term:
R
Lmin
= U
Out
/ 3mA
R
Lmin
= minimum load resistor
U
Out
= output voltage
Load resistor characteristic
Switch output
Inductive loads at the pnp switching outputs, e.g. relays or contactors may only be used with a free-
wheeling diode or a RC protection circuit to avoid high voltage peaks.
The load at the PNP switching output will be connected to the teterminal of the supply voltage
by a semiconductor switch contactless and by this bounce-free.
At an activated switching state a positive signal near supply voltage is feed to the output.
At deactivated switching state and at failure of supply voltage the semiconductor switch is shut off.
The PNP switching output is current limited to 0,2...0,25 A and is overload and short circuit protected.
Summary of Contents for Sonicont USN020
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