Siemens DTU3005-B Especificaciones descargar pdf (Pagina 37)

ACCESS System

Up to this point we have looked at how various factors effect

power quality. The following sections will focus on components

of the ACCESS system and how they can be used as a

complete power monitoring and management system.

Supervisory Devices In general, ACCESS works on two levels: supervisory and field.

Supervisory devices, such as WinPM™, collects and displays

information from a network of field devices. A supervisory

device sends requests and receives feedback from field

devices over a serial network. This process, called polling,

allows the supervisory and field devices to exchange

information. Siemens WinPM software runs on a personal

computer (PC).

Field Devices Field devices include meters, circuit breakers, protective relays,

I/O devices, motor protectors, and personal computers (PCs).

Field devices send and receive information about an electrical

system.

In the following sections we will look at ACCESS system

products used as supervisory devices, in network

communication, and field devices.

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Siemens DTU3005-B Especificaciones Pagina 37