Installation Manual Owner manual

PM180 Substation Automation Unit
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2.2.9 Analog Input/Output
The PM180 provides 4 optically isolated analog inputs and 4 analog outputs (4AI/AO) with internal isolated power
supply. Current input/output options are: 0-20 mA and 4-20 mA (current loop load of up to 500 Ohm), 0-1 mA and
±1 mA (current loop load of up to10 kOhm), as shown in Figure 2-13.
Up to three 4AI/AO modules can be installed in the PM180.
Figure 2-13 Analog Input/Output Connection