TAVRIDA ELECTRIC Rec15/25 Al1 5p, User Manual, Page: 17 / 136

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1.2.2.5 Input/output module (IOM)
The RC can be supplied with an IOM (Figure 15) module on request It provides control and indication
functions with the aid of digital inputs/outputs.
Figure 15
Input/Output module
The IOM contains twelve digital inputs and twelve digital outputs. The location of these connectors
(marked
“15”…”18”) with these inputs and outputs are shown in Figure 16.
Figure 16
Location of IOM connectors
Digital inputs are potentially isolated by means of opto-couplers (Figure 17).
Figure 17
Digital inputs
Bistable relays with changeover contacts are used for the digital outputs as illustrated in Figure 18.