Siemens EF 847 Series Manuale Utente Scaricare il pdf (Pagina 5)

Siemens Industry, Inc.

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The control program for each TC Compact

customized to exactly match the application. Proven

Powers Process Control Language (PPCL), a text-

based programming structure like BASIC, provides

direct digital control and energy management

sequences to precisely control equipment and

optimize energy usage.

Global Information Access

The HMI port supports operator devices, such as a

local user interface or simple CRT terminal, and a

phone modem for dial-in service capability. Devices

connected to the operator terminal port gain global

information access.

Multiple Operator Access

Multiple operators can access the network

simultaneously. Multiple operator access ensures that

alarms are reported to an alarm printer while an

operator accesses information from a local terminal.

When using the BACnet/IP ALN option, multiple

operators may also access the controller through

concurrent Telnet sessions and/or local operator

terminal ports, plus optional Web interface using the

Web or Web Services option.

Menu Prompted, English

Language Operator Interface

The TC Compact includes a simple, yet powerful,

menu-driven English Language Operator Interface

that provides, among other things:

 Point monitoring and display

 Point commanding

 Historical trend collection and display for multiple

points

 Event scheduling

 Program editing and modification via Powers

Process Control Language (PPCL)

 Alarm reporting and acknowledgment



Continual display of dynamic information

Built-in Direct Digital Control

Routines

The TC Compact provides stand-alone Direct Digital

Control (DDC) to deliver precise HVAC control and

comprehensive information about system operation. It

receives information from sensors in the building,

processes the information, and directly controls the

equipment. The following functions are available in

the TC Compact:

 Closed Loop Proportional, Integral and Derivative

(PID) control.

 Logical sequencing.

 Alarm detection and reporting.



Reset schedules.

Built-in Energy Management

Applications

The following applications are programmed in the TC

Compact Series and require simple parameter input

for implementation:

 Automatic Daylight Saving Time switchover

 Duty cycling

 Economizer control

 Event scheduling

 Holiday scheduling

 Night setback control

 Peak Demand Limiting (PDL)

 Temperature-compensated duty cycling



Temporary schedule override

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