Circutor MKD Series User Manual download pdf

MKD-ITF

M98223701-03-10A

THREE-PHASE METER MKD-ITF

The electronic three-phase energy meter MKD-ITF is

capable of measuring energy in consumption and

generation (four quadrants): active energy (consumed and

generated), inductive reactive energy (consumed and

generated) and capacitive reactive energy (consumed and

generated), in addition to metering partial energies. The

measurement is taken directly in true rms by three current

transformers in L1, L2 and L3 incorporated in the unit. The

power is supplied by the measurement itself between the

phases L1 and L2. The parameters measured and

calculated are shown in the table of variables.

This unit has 2 references:

MKD-ITF-C2: Meter with two energy pulse outputs.

MKD-ITF-RS485-I2-C2: Meter with RS485 Modbus RTU

communication, 2 pulse outputs and 2 programmable

voltage-free inputs (Tariffs/Inputs).

The programmable inputs may be digital inputs (logic

condition or pulse receptor inputs), or tariff inputs. If the

inputs are configured as tariffs, the meter has 3 tariffs.

This manual is available in electronic format on CIRCUTOR's

website:

www.circutor.es

Before making any maintenance operation,

connection modification, repair, etc., you must disconnect

the appliance from all power supplies. If you suspect an

operational fault in the unit or in its protection system,

remove the unit from service.

1.- KEYPAD FUNCTIONS

The button enables you to move through the different

groups of energies, if relevant: tariff one and partial, or tariff

one, two, three and partial. In the configuration menu, it is

used to validate the data and skip to following

parameterisation screen.

The button

enables you to select the different display

options for active or reactive energy. In the configuration

menu, it is used to increase the digit if you are introducing or

selecting a variable.

The button

in the active option enables you to select

generated or consumed energy, and in the reactive option it

enables you to select inductive or capacitive. In the

configuration menu, it is used to move the cursor between

the figures.

The button

Display

enables you to turn on the display if there

is no power supply. This function permits local reading of

the meters, when the unit is out of service. This option is

available provided the meter has an optional battery installed

inside it (see price list M3).

The button

Setup

is for quick access to the complete

parameterisation menu of the unit. To access this menu,

keep it pressed for at least one second

The button

Clear

has two purposes:

a) To erase the partial energies. To do this, keep the button

pressed for at least four seconds. Once the message “done”

is displayed, it indicates that these meters (active and

reactive) have been successfully initialised. The group of

energies shown on screen are deleted.

b) To delete the pulse meter. To do this, keep the button

Clear

pressed for at least four seconds, on the display

where the inputs are displayed. Once the message “done” is

displayed, it indicates that these meters (input 1 and input 2)

have been successfully initialised.

The main function of the button

is to start up the

meter in one single step, with the minimum configuration

for metering. (See section 2.2.- One-step paramererisation).

This button indicates the direction of the current.

2.- ONE-STEP START-UP (FAST CONNECTION)

2.1.- Prior information

This option is only valid for indicating the direction of the

current in an installation. As it is a direct measurement

device, it does not have any voltage or current

relationship.

2.2.- One-step parameterisation

By holding the button down, the unit changes the

direction of the current to ascending or descending.

When you see

on the display, it indicates that the

direction of the current is ascending and therefore, the

load is in the upper part of the meter. To change the

direction of the current of the meter, hold the button

down; this changes the symbol on the display to

indicating the change in the current direction to

descending.

Using a single button,

the MKD-ITF energy meter is

configured.

3.- COMPLETE PARAMETERISATION OF THE METER

Using the setup button, you can modify all the

configuration options.

3.1.- Current direction

“A dir” appears on the screen; you must choose between

“up” (ascending) or “dn” (descending) depending on

whether the load is in the upper or lower part of the meter.

3.2.- Metering in 2 or 4 quadrants

“quad” appears on the screen; you must choose one of the

two available options: 2=consumption or 4=consumption

and generation.

3.3.- Programming the disconnection time for the

backlight

"disp off” appears on the screen; you must program the

time the backlight must stay on in seconds after the last

button pressed. If you program 00, the backlight is kept on

permanently.

3.4.- Display or omission of reactive energy

"react” appears on the screen; this option allows you to

select the display or omission of the reactive energy (“Yes”

or “n0”).

3.5.- Display or omission of partial energy

"Part” appears on the screen; this option allows you to

select the display or omission of the partial reactive and

active energy (“Yes” or “n0”). If you choose to omit it, the

meter hides and stops the metering of partial energy.

3.6.- Programming energy pulse outputs

The screen shows “Out act”; you must select which

energy you wish to associate with digital output 1:

consumed (import) or generated (export) active energy;

once you have validated the data with the button

you must enter the value in W·h per pulse.

The screen shows “Out rea”; you must select which

reactive energy you wish to associate with digital output 2:

Inductive consumed, capacitive generated, inductive

generated, capacitive consumed (L / C- / L- / C); once you

have validated the data with the button

, you must

enter the value in var·h per pulse. If you select 2 quadrants

(see section 3.2.- Metering in 2 or 4 quadrants), only L and

C are available, corresponding to the variables of reactive,

inductive or capacitive energy consumed.

3.7.- Programming the digital inputs

The unit's digital inputs can be configured by way of selecting

tariffs “tariffs” with a maximum of three, or in digital inputs

mode “inputs” whose main function is logging the pulses

received “puls”, or, detecting the logic status of the input

“stat”.

Through the indication “In1 In2” in the upper part of the

display, the digital inputs of the meter are configured. To

change the configuration of the inputs, and pass from

“tariffs” to “Iinputs”, press the key

a) Tariffs “tariffs”

The inputs convert the meter into a triple tariff

meter, selecting each of them through hardware.

The unit has one common and two voltage-free

inputs to select the type of tariff in which you wish

to work (Tariff 1, Tariff 2 or Tariff 3).

- Tariff 1: With no jumpers between terminals

- Tariff 2: Jumper between terminals 7 and 8

- Tariff 3: Jumper between terminals 9 and 8

The lower part of the screen shows “t”, indicating

that the inputs have been configured as tariff

inputs.

b) Digital inputs “Inputs”

The lower part of the screen shows “Inputs”,

indicating that the inputs are configured as digital

inputs. Each input must be configured separately;

first input 1 “In1” and then input 2 “In2”.

- Input 1: Terminal 7

- Input 2: Terminal 9

- Common for the inputs: Terminal 8

Each of the inputs must be defined between two

operating modes:

b.1) Logic status mode “Stat”.

When programmed as status “Stat”, this indicates

that the input of the meter receives a digital status

input. Switch from “Stat” to “Pul” by pressing the

key

b.2) Pulse receptor mode “Pul”.

When programmed as pulse receptor “Pul”, this

indicates that the signal received is a pulse input,

and you must configure the weight of the pulse.

Access this screen by pressing the key

Using the buttons and introduce the

weight of the pulse. To validate it, press the key

Once you have programmed the weight of the

pulse, the option “In1 deC” is displayed, indicating

the decimals to show of the pulses received.

4.- DEFAULT CONFIGURATION

The MKD-ITF electronic three-phase meter is

supplied with the following default configuration:

VARIABLE VALUE

Metering in 2 or 4 quadrants 2

Backlight disconnection 10

Reactive energy display no

Partial energy display no

Energy pulses

- Active energy Import

- W·h / Pulse 1000

- Reactive energy L

- VAr·h / Pulse 1000

5.- COMMUNICATION (TYPE MKD-ITF-RS485-

C2-IN)

5.1.- Programming configuration parameters

Parameters that can be configured in the

parameterisation menu:

- “nPEr”: Peripheral number 001 to 255

- “bAud”: Speed 1200-2400-4800-9600-19200

- “bitS”: Length 8 bits

- “PAri”: No , Even, Odd

- “StoP”: Stop bits 1 or 2

Default configuration: 001 / 9600 / 8 / N / 1

1 2

MKD-ITF 1

Summary of Contents

Page 1 - MKD-ITF

MKD-ITF M98223701-03-10A THREE-PHASE METER MKD-ITF The electronic three-phase energy meter MKD-ITF is capable of measuring energy in

Page 2

MKD-ITF M98223701-03-10A 5.2.- Communication protocol The MKD-ITF meter uses the MODBUS RTU© communication protocol and the RS485 networ

Circutor MKD Series User Manual

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Circutor MKD Series User Manual

Browse online or download User Manual for Measuring instruments Circutor MKD Series. CIRCUTOR MKD Series User Manual

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