Siemens
СРЕДСТВА ПРОМЫШЛЕННОЙ АВТОМАТИЗАЦИИ
официальный партнер Сименс
Каталог СА01 2017
архивный
(4872) 700-366
skenergo@mail.ru

Energy calculator SITRANS FUE950
Technical principle

Calculation of energy is based on the following formula:

Energy = Volume x (THot - TCold) x Kfactor (Ti)

Volume: Volume [m3] of a given amount of volume pulses

THot: Measured temperature in the hot line

TCold: Measured temperature in the cold line

Kfactor (Ti): Thermal coefficient of media enthalpy and heat content

The energy calculation is made by a counter and depends on temperature difference, pulse input frequency and legal requirements.

The calculator always carries out at least one energy calculation every 2 seconds. If the connected flowmeter has not sent enough pulses the energy calculation and flow indication is also based on the 8 seconds value.

Data memory

The FUE950 has a history memory of 24 periods (months, weeks, days). The following values are stored monthly, weekly or daily in the EEPROM on the programmed day of 1…31 (via software tool).

  • Date/Time
  • Volume
  • Energy
  • Error day counter
  • Tariff energy 1
  • Maximum monthly flow rate
  • Tariff energy 2
  • Maximum monthly power
  • Tariff definition 1
  • Date of maximum monthly flow rate
  • Tariff definition 2
  • Date of maximum monthly power
  • Pulse counter input 1
  • Pulse counter input 2
  • Operation hours
 


Data logger memory (LOG)

The LOG of the calculator is stored every 24 hours with all cumulative values in the EEPROM. The storage frequency can be selected from various storage intervals (5, 6, 10, 12, 15, 20, 30, 60 minutes or the default setting of 24 hours). The data which are stored in the LOG could be read out using a software tool and can be used for evaluations.

Extract of possible LOG settings

Storage interval

Values

Number of data records

Recording period

5 minutes

  • Error status
  • Overload time temperature
  • Overload time flow rate
  • Forward temperature
  • Return temperature
  • Date and time
  • Energy
  • Tariff energy 1
  • Tariff energy 2
  • Tariff definition 1
  • Tariff definition 2
  • Volume
  • Error day counter

440

36.6 hours

15 minutes

440

110 hours

1 hour

440

18.3 days

24 hours
(default setting)

440

440 days



Maximal Values

The integrator creates max. values for power and flow rate based on consumption time, which are stored in the EEPROM. The integration intervals are adjustable to 6, 15, 30 or 60 minutes and 24 h. Default setting is 60 minutes.

Tariff/Accounting date function

The calculator includes two independent memories in which the accumulated energy at two programmable tariff dates are stored.

  • Last accounting date
  • Last but one accounting date
Values stored
  • Energy
  • Volume
  • Tariff counter 1
  • Tariff counter 2
  • Pulse counter 1
  • Pulse counter 2
  • Date

The integrator offers two optional tariff memories for monitoring plant load states. Here it concerns threshold value tariffs. Extensive tariff conditions make it possible to adapt the calculator individually to the required customer-specific applications.

Both tariffs are separately configurable and independent from each other. Energy or time can be measured alternatively per tariff register dependent on the tariff mode adjusted in each case.

With the "time triggered tariff function" the switch-on time and the switch-off time are adjustable independent from each other for each day of the week in steps of 15 minutes.

The following tariff limit types of the tariff are possible:
(This example applies to the display at 3 fractional digits after comma)

Type

Description

Limit

Limit resolution

dT

Temperature difference

1 … 190 °C

1 °C

-dT

Negative temperature difference

1 … 190 °C

1 °C

TR

Return temperature (low)

1 … 190 °C

1 °C

TV

Forward temperature (high)

1 … 190 °C

1 °C

P

Power

10 … 2500 kW

10 kW

Q

Flow

1 … 255 m3/h

1 m3/h

FE

"Theoretically forward energy" with return temperature of 0 °C

  

Z

"Time triggered" counting energy

  

E

"External" counting energy

  


Error handling and memory

Events such as changes and faults are stored in a non-volatile memory with a capacity of up to 127 entries. The following events are recorded:

  • Checksum error
  • Temperature measurement error
  • Error hours
  • Start and end of test mode

If SITRANS FUE950 records an error, this will be automatically indicated by a "alarm symbol" on the display.

To protect the reading data, all the relevant data are saved in a non-volatile memory (EEPROM). This memory saves the measured values, device parameters and types of error at regular intervals.

The following events are recorded:

  • Temperature sensor error
  • Swapped hot and cold temperature sensors
  • Battery low warning
  • Power supply failure
  • Optical communication warning
  • RAM checksum error
Outputs/Inputs/Communication

Communication interfaces:

SITRANS FUE950 is fitted with an optical infra-red send/receive port in accordance with EN 1434/IEC 61107, protocol standard, EN 1434/EN 60870-3 (M-Bus protocol).

A specific optical head with a permanent magnet (IrDA-adapter) in accordance with EN 1434 can be used for readout data or communication with the parameterization software.

2 ports for optionally plug-in modules

The calculator features 2 ports for the plug-in modules.

One slot is for the function modules and the other for the communication modules.

Communication modules

The following communication modules are available as options: RS 232 module, RS 485 module and M-Bus module. The RS 232 and RS 485 communication modules are serial interfaces and permit data exchange with the calculator. For this purpose a special data cable is necessary.

The M-Bus module is a serial interface for communication with external devices (M-Bus Master/Centre). According to the M-Bus structure a number of calculators can be connected to a control centre.

Pulse input module

Two pulse inputs are available. The pulse value and the unit is configurable for energy, water, gas or electrical meter by parameterization software. Data are separate cumulated in different registers and are also stored on the two accounting day's (Tariff registers).

Combined pulse Input/Output module

Two pulse inputs combined with one pulse output are available on one module. The pulse inputs are configurable with value and the unit by parameterization software.

The pulse output is also programmable using the parameterization software.

Pulse output

The calculator provides levels for two optional external pulse outputs, which can be freely programmed using the parameterization software tool.

Default setting is one pulse which occurs per change in the least significant digit in the display with the unit and resolution selected by the device ordering.

Possible pulse output values

  • Energy (default setting)
  • Volume (default setting)
  • Tariff energy 1
  • Tariff energy 2
  • Tariff condition 1, limit switch
  • Tariff condition 2, limit switch
  • Energy error
  • Volume error
  • Volume with specific resolution (0.1, 1.0, 10 or 100)
  • Energy with specific resolution (0.1, 1.0, 10 or 100)
Combined current output module

Optional module with 2 passive 4 ... 20 mA outputs.

Possible output values:

  • Power (default setting for output #1)
  • Flow (default setting for output #2)
  • Hot, cold or difference temperature

The settings can be configured by parameterization software. The current output module occupies both ports, means no other plug-in module will possible to plug in.

Module combinations

The calculator has a group of extension modules for communication and another group of extension modules for additional functionality. These modules are available first selected within the calculator, or for retrofitting in the field.

One single function module as well as one single communication module out of following modules is selectable.

Function modules:

  • Pulse input module, 2 inputs
  • Pulse output module, 2 outputs
  • Combined pulse module 2 inputs, 1 output
  • Combined current output module, 2 x passive 4 ... 20 mA
    (occupies both ports)

Communication modules:

  • M-Bus (M-Bus protocol according EN 1434-3)
  • RS 232 (M-Bus protocol according EN 1434-3)
  • RS 485 (M-Bus protocol according EN 1434-3)
















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Арматура DENDOR

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Датчики и измерители

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Регуляторы и регистраторы

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Пневматическое оборудование

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Краны и Клапаны

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Измерительные приборы

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Системы беспроводного управления «умный дом»

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Бесконтактные выключатели Конечные выключатели Оптические датчики Энкодеры

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SKW-FS - Установка умягчения

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SKW-FK - Установка обезжелезивания
Каталог оборудования 2017




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