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5 digital inputs, Ewon4002™ installation guide, Off on off on off on – Siemens eWON4002 User Manual

Page 19

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eWON4002™

Installation Guide

page 16 of 35

ver 2.04

Note: the 3 switch configurations shown in the table above are the only configurations giving

satisfactory results.

Warning: The switch 2 is reserved and must stay OFF. Note that the switches 3 & 4 need to have the

same position (both ON or both OFF). When they are ON, this connects the internal
polarisation (typ 680 Ohms) and termination (typ 120 Ohms) resistors. This configuration
applies only to RS4xx lines conforming to good practices.

5.5 Digital Inputs

There are 9 Digital Inputs, 8 on the DI connector on the eWON®’s top face, and 1 on the Input/Output connector
(DIDO) that stands on the eWON®’s bottom face.

Positions

Mode

RS232

RS422, RS485

WITHOUT polarisation and termination resistors

RS422, RS485

WITH polarisation and termination resistors

Table 13: Serial mode configuration switches

Specification

Value

Type

24 VDC isolated Digital Input - “sink” type

Input voltage range

0 to 24 VDC

Input voltage absolute max (varistor protection)

30 VDC

Zero state max input voltage (OFF)

0~5 VDC

One state voltage range (ON)

10 to 30 VDC

One state current (ON)

30mA/3k3=9mA (source: max 10mA)

Isolation

3,5 kV

Max frequency

10Hz

Pinout connector

See label and appendix (

Input/Outputs on page 28

)

Table 14: Digital Input specification

OFF

ON

OFF

ON

OFF

ON