Weight Transmitter / Weight Indicator AST-PD

AST PD Gewichttransmitter - indicator
AST PD Gewichttransmitter - indicator

Weight transmitter / weight indicator AST-PD is a versatile transmitter for panel mounting with special dosage software for dispensing one or more products, both load and unload Weighing.

Connection to up to 16 load cells; CE verified.

See further under the tab Product information.

  1. Type: AST-PD
  2. Type: AST-PD-AN Version: with 16-bit analog output 4-20 mA / 0-5Vdc / 0-10Vdc

Weight transmitter / weight indicator AST-PD

  • CE verifiable (application for legal trade)
  • versatile transmitter 96x96x80 mm (lxhxd); perforation 90×88 mm (lxh) for panel mounting
  • 4 dependent and 4 independent channels for direct reading and diagnosis of any connected load cell
  • red LED display with 6 13-mm digits and 6 LEDs for showing active functions
  • up to displayable 800.000d with internal resolution up to 3.000.000 points
  • A/D 24-bit sigma-delta conversion
  • connectable with up to 16 analog load cells with 350 Ω input resistance
  • master/slave management (up to 4 slaves / 1 master).
  • extensive functions like automatic- and presettable tare, total weight, recipe,
    net/gross, piece counting, hold, peak etc.
  • RS-232/C bidirectional port for connection to external units
  • RS-485 bidirectional port for network connection
  • 2 photomosfet outputs; 2 opto-isolated photo coupler inputs
  • 16-bit analog output 4-20 mA / 0-5Vdc / 0-10Vdc (model AST-P-AN)
  • power: from 12 Vdc to 24 Vdc

Functions

  • zero setting
  • automatic and presettable tare
  • print and/or data transmission
  • ON/Stand-by
  • weighs totalization
  • formulation
  • net/gross weight switch
  • piece counting
  • hold (weight fixed in display)
  • peak weight
  • kg/lb conversion

Serial functions

  • reading of the net, gross, and tare weights
  • microvolts or ADC converter for all channels
  • clearing
  • automatic and presettable tare
  • scale switch
  • printing
  • message display
  • setting of average piece weight in piece counting
  • setting of set points of the outputs
  • simulation of key pressure
  • reading/writing of alibi memory

Profibus functions

  • reading of the net, gross, or tare weights
  • clearing
  • automatic tare
  • scale switch
  • setting of set points of the outputs
  • reading/writing of alibi memory

Standard in-/outputs

  • RS232/C bidirectional port configurable for connection with external units
  • RS485 bidirectional port configurable for network connection
  • six 150 mA 48 Vac / 150 mA 60 Vdc (NO) photomosfet outputs which may be
  • configured as direct control or upon weight stability, with programmable weight thresholds (disable and enable thresholds)
  • 2 configurable optoisolator photocoupler inputs: 12÷24 Vdc, 5 mA min – 20 mA max.
  • MODBUS serial protocol
  • with PROFIBUS serial interface
  • with 16-bit analog output 4-20mA / 0-5Vdc / 0-10Vdc at choice
  • the maximum applicable voltage is 350 O and the minimum applicable voltage
  • resistance is 10 kohm (only type AST-P-AN)

DOSAGE FUNCTIONS
Finishing of the dosage when reaching the target weight is managed as follows:

  • Single product dosage (load), (manually and automatically controlled).
    Configuration for managing of one dosage system of one product. Application with partition of products with equal weight, filling of hopper or extracting of accurate quantities from a silo, supporting the operator with manual dosage.
  • Single product dosage (unload).
    Configuration for managing of one dosage system of one product. Application with partition of products with equal weight or extracting of accurate quantities from a silo, with management control for refilling the silo.
  • Multi product dosage (load and unload).
    Configuration for managing of one dosage system of several products. For mixing of products through recipe, with management control for mixers, burners or vibrators, using switching contacts destinated for this purpose.

LOAD: by weighing of the container to be filled; the weight increases until the set target weight is reached

UNLOAD: by weighing of the silo from which thet product is to be extracted; the weight decreases until the set target weight is reached

 

Options:

  • ticketprinter for panel mounting
  • easy weigh software for Windows
  • expansion module with indicator-LEDs for checkweighing (under/over/ok)
  • USB HID interface
  • real-time clock module (date/time)
  • alibi memory incl. date/time for max. 120.000 weighings