Weight processor for the hopper scales WBA

Weight processor for the hopper scales WBA

The weight processor PW-310 for automatic hopperscales (WBA) ensures measuring of mass of free-flowing and liquid materials, automatic control of actuators WBA for the purpose of fixation by the accruing total of the total weight of the material which has passed through WBА.

Features:

- control of one-speed or two-position (double-speed) (for filling-up of fast and exact flows) the batching mechanism and the gear of unloading of the material;

- control of the gears of vibroloading and vibrounloading with individual setting of start and stop of the operation by the material weight in the hopper;

- external discrete signals of control of the actuators position and enable of loading and unloading of the material;

- maintenance of the set capacity of the material pass;

- shipment of the given material quantity including with the set capacity;

- six- or four-wire connection of the load cell;

- simple calibration of the gear by exemplary weights, and with use of values mV/V of the transmitters;

- an adjustable current output;

- non-volatile memory for storage of the journal, totals, settings and real time clock;

- data transmission to peripherals by interface RS-485 or RS-232 with use of the protocol ModBus;

- remote control of operation of the hopper scales from peripherals by interface RS-485 or RS-232 with use of the protocol ModBus;

- use of wireless data transmission by means of the portable modem;

- the journal of totals (hour, shift, month, annual);

- the journal of events;

- built-in tests;

- indication of abnormal operation of the batcher (emergencies);

- password protection of settings;

- bilingual interface (Russian / English) of the user;

- possibility of loading of the software at the Customer for its renewal or change of the functionality of the gear.

Power supply

from alteating-current mains with voltage 90 … 260 V, frequency 50 … 60 Hz with use of the integral power supply, or from direct-current mains with voltage 12 … 24 V

Power consumption, VА, no more

10 (without loads connected to discrete exits)

Overall dimensions, mm

280 х 182 х 90

Mass, kg, no more

2,5

Temperature range, °C

from – 10 to + 50 

The display

liquid crystal character with illumination, 16 decades, height of a decade 10 mm

Range of an input analogue signal of direct current voltage, mv

is fixed depending on the operating transmission coefficient of the load cells in ranges 0 - 10, 0 - 20, 0 - 40 and 0 - 80

Range of an output analogue signal of direct current, mA

0…5; 0…20; 4...20

Input of discrete signals

to 8 ports of galvanically disentangled signals of direct current with voltage 12 … 24V

Output of discrete signals

to 8 ports of galvanically disentangled signals of direct current with voltage 12 … 24V and output capacity 0,5 A. The total load no more than 40 VА.

Power supply of the tensoresistive transmitter

5 V of direct current voltage

Amount of connection ports of the tensoresistive transmitters

1 

Number of transmitters

to 8 (at input resistance of transmitters 400 Ohm)

Maximum length of a cable for transmitter connection, m

50 (at 6 wire connection)

Inteal resolution of the measuring channel of transmitters, discharges

24

Industrial resolution, references

40000

Commercial resolution, references

10000

Change of a transformation coefficient from temperature, no more

0,01 %/10 °С

Division value

1; 2; 5х1; 0,1; 0,01; 0,001

Units measure

kg,t, kg/m, t/hour, m, m/s

Control buttons

4 pieces

The serial interface

The first channel RS-485 / RS-232;

The second channel - RS-485 (option)

Non-volatile memory (RAM), Kb

8 (482 records in jouals) with real time clock
  • fixation by the accruing total the amount of doses of the total weight of material, which has passed through the hopper scales;
  • fixation of weight of the last filling of the hopper;
  • fixation of amount of cycles of loading unloading;
  • maintenance of the set capacity of the material pass;
  • shipment of the set quantity of material including and at maintenance of the set capacity of the pass material;
  • shaping of the emergency signal at abnormal operation of the batcher with the indication on the display of character of the abnormal operation;
  • shaping of the signal about overloading of the hopper with additional indication on the display;
  • shaping of adjustable current signal proportional to the weight of material in the hopper, to the mass value of the last weighing or to the current capacity;
  • shaping of the joual of hour, shift, month, annual totals, the joual of events for storage of the information about the executed processes by maintenance personnel (the process title, date and time) and the joual of all emergencies;
  • transmission of the described above data to peripherals by interface RS-485 or RS-232 with use of the protocol ModBus by one or two (optionaly) consecutive channels;
  • remote control of the hopper scales operation by interface RS-485 or RS-232 with use of the protocol ModBus.

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