Emerson M-series MD Plus Controller

Emerson M-series MD Plus Controller

Introduction

The MD Plus Controller provides communication and control between the field devices and the other nodes on the control network. Control strategies and system configurations created on earlier DeltaV™ systems can be used with this powerful controller. The MD Plus Controller provides all the features and functions of the M5 Plus Controller, with plenty of memory for large batch and other memory-intensive applications.

Benefits

Increases productivity

Faster. The MD Plus Controller is more than 400% faster than the M5 Plus Controller and over 3X the user configurable memory as the MD controller. The Ethernet ports are full duplex, 100MB/second maximum throughput. The results are lower CPU utilization and higher capacity for control strategies.

Self-addressing. 

The DeltaV controller is unique in its ability to automatically identify itself to the DeltaV control network. When the controller is powered up, it is automatically assigned a unique address—no dip switches, no configuring—just plug and play!

Self-locating. 

A controller’s physical location is easy to find. LEDs on the face of the controller can be made to flash, providing a strong visual clue.

Automatic I/O detection. 

The controller can identify all I/O interface channels located on the subsystem. As soon as an I/O interface is plugged in, the controller knows the general characteristics of the field devices managed by that I/O interface. This reduces the no value engineering associated with configuration — easy！

Easy to use Total control. 

The controller manages all control activities for the I/O interface channels. It also manages all communication functions for the communications network. Time tamping, alarming, and trend objects are also managed within the controller. The controller executes all control strategy with execution speeds up to every 100 ms.

Data protection. 

Each time you install data in a DeltaV controller, the installation information is automatically saved. Likewise, when users make online configuration changes to a controller, the system stores these changes as well. This way, the system always retains a complete record of all the data that has been installed in the controller and any online changes that have been made.

Cold restart. 

This feature ensures that in case of power failure, the controller will restart without manual intervention and without any other device present on the network. Now, you don’t have to reboot from the workstation. Simply set the restart state of the controller to current conditions.

Specifications

Power requirement：Supplied by System Power Supply through 2-wide Power/Controller Carrier

Fuse protection：3.0 A, non-replaceable fuses

Power dissipation：5.0 W typical, 7.0 W maximum

Mounting：On right slot of power/controller carrier.

User Memory：48 MB

Primary Control Network：8-pin RJ-45 connector

Operating temperature：-40 to 70 C (-40 to 158 F)

Relative humidity：Relative humidity

Shock (normal operating conditions）：10 g ½-sine wave for 11 ms