Fairbanks X SERIES PR 5220 ETHERNET TRANSMITTER - Manual (Page 23)

Section 3: Installing the Instrument
05/11 24 51209 Revision 2
3.2.10 3 Optocoupler Outputs
The 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 VDC into < 3 VDC. A load
resistance of 2.2 /1 kohms must be provided.