Connecting Digital Modules - Siemens S5-100U User Manual

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Connecting Digital Modules

All I/O modules are plugged into bus units. Connect the I/O modules to the terminal blocks of the

bus units. The connections illustrated in this section are of the screw terminal type (SIGUT

connection method).

You can also use the crimp snap-in connection method described in section 3.2.1. In both cases,

the terminal assignments are marked on the terminal blocks.

The assignments listed in Table 3-2 always apply for connecting the load voltage.

Load Voltage

115/230 V AC

For digital outputs, energy is temporarily stored in an internal capacitor for about

100 ms after the L+ supply is switched off.

Please note that this energy may be sufficient to activate low-rating loads (e.g., pulse

valves) for a triggered output.

EWA 4NEB 812 6120-02

Table 3-2. Connecting the Load Voltage

Installation Guidelines

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