PR 5220 Instrument Manual Installing the Instrument
Sartorius EN-27
3.1.5 Optocoupler Outputs
The 3 optocoupler outputs have one common potential (GND) for the output group that is separated from the
common potential of the input group.
Connection method
4-pin plug-in terminal block
Cable
Shielded, max. 50 m
Number of outputs
3
Output signal
External supply required
Output current
Max. 30 mA
Output voltage
Max. switching voltage: 28 VDC
Electrical isolation
Yes; a common minus potential for the group
of 3 outputs
Example: relay control connection
When output 1 is active (true), the relay switches.
For protection of the output circuit, relays with
free-wheel diode must be provided.
Example: voltage output connection
When output 1 is active (true), the output voltage
changes from 24/12 V DC into <3 V DC.
A load resistance of 2.2/1 k¥ must be provided.
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