Siemens ST PCS 7 manual ET 200M distributed I/O, 11/9

© Siemens AG 2007

Process I/O

ET 200M distributed I/O

Introduction

■Overview

Within the ET 200 range, ET 200M represents the main series of distributed I/O systems for process control applications with

SIMATIC PCS 7.

The ET 200M has a versatile range of I/O modules of S7-300 de- sign, including ones with special I&C functions.

•Standard analog and digital modules

•Redundant I/O modules (DI 16 x DC 24 V, with diagnostics capability; DO 32 x DC 24 V/0.5 A; AI 8 x 12 bit)

•I/O modules with enhanced diagnostics capability

•Ex I/O modules

•Controller and counter modules

•HART modules

•F-modules for safety-related applications

When using active bus modules, faulty I/O modules can be re- placed while the plant is in operation (RUN) without influencing adjacent modules (hot swapping function).

The following actions are possible with the automation system in RUN:

•Addition of new modules within a station

•Reparameterization of modules

•Addition of ET 200M stations

The connected HART field devices can be parameterized using

SIMATIC PDM.

Note:

Apart from these selected modules it is also possible to use - with limita- tions in functions - all other I/O modules from the current range of S7-300 signal modules.

In addition to the standard SIMATIC S7 I/O modules, special I/O modules with diagnostics capability offer the following func- tions, among others:

•Channel-based diagnostics, e.g. open-circuit, short-circuit, limit violations

•Internal module monitoring, e.g. parameterization error, RAM error, tripped fuse

•Flatter monitoring for sensors

•Pulse stretching

•Output of a selectable substitute value on failure of the central processing unit

In the event of a fault, the modules with diagnostics capability automatically pass on the corresponding message to the opera- tor station, permitting fast and simple troubleshooting.

The ET 200M can be used in standard environments and also in Ex zones 2 and 22. The actuators/sensors can be positioned in Ex zones 1 and 21 when suitable Ex input/output modules are used. Hot swapping of I/O modules within Ex zone 2 and 22 is allowed with the right permit (e.g. fire certificate).

■Technical specifications

You can find detailed technical data on the ET 200M and S7-300 I/O modules

•in Catalog ST 70 or

•in the Mall / Catalog CA 01 under "Industrial automation sys- tems / Controllers / SIMATIC S7"

■Options

SIPLUS extreme range for extended temperature ranges and corrosive environments

The "standard" properties of an individual device or system are often insufficient for harsh environmental conditions, applica- tions in corrosive environments or extreme temperature ranges. Depending on the location of use, the result could be limitations in functionality or operational safety or even total failure of the plant.

The SIPLUS extreme range offers individually adapted standard products which permit retention of the functionality of your plant

or process even under extreme conditions of use. These in-11 clude:

•Ambient temperature range from -25 to +60/+70 °C

•Condensation, high humidity

•Increased mechanical stress

•Extreme loading by media, e.g. toxic atmospheres

•Voltage ranges deviating from the standard

■Design

An ET 200M remote I/O station comprises:

•1 or 2 (redundant) power supply modules (can be omitted in the case of a central 24 V DC supply for the plant)

•1 or 2 (redundant) IM 153 interface modules for connection via PROFIBUS DP with transmission rates of up to 12 Mbit/s

•Up to 12 I/O modules for connection of sensors/actuators

All I/O modules have optical electrical isolation from the back- plane bus. Up to 12 I/O modules can be connected to an

IM 153-2 High Feature interface module, or up to 8 to an IM 153- 2 FO High Feature interface module. The interface modules can also have a redundant design if required.

• Increased degree of protection (dust, water)

You can find a summary of the available range of products clas- sified according to their special properties on the Internet. The corresponding SIPLUS product is assigned there to the stan- dard product. Note: SIPLUS products are also included in the Catalog ST 70.

Additional information is available in the Internet under:

http://www.siemens.com/siplus

Siemens ST PCS 7 · November 2007

11/9