LD 5290 BS/F.pdf

Product Description

The LD5290.BS is a high performance Integrator/controller for continuous in line conveyor belt applications. It processes the instantaneous weight from the load cells, (kg/m), the speed of the belt, (tachometer pulses/sec), calculates, displays and totalizes the Flowrate. Industrially oriented hardware and proven control software allow fast and reliable operation at the highest accuracy and reliability, ensuring easy adaptation to application requirements and optimization of the weighing process. High accuracy and stability weighing electronics allow the controller to be used in almost every belt scale application, fast moving or light belt loading to the highest standard. Real time operating system, designed for the handling and control of bulk materials in automatic continuous weighers, ensures that measuring and controlling tasks are always processed independent of input/output activity. Ease of operation with guided Setup and Calibration procedures, with plain language prompts on alphanumeric display, integrated PLC functions and data management features. Connectivity to higher level systems is supported with enhanced communications and analogue and digital interfaces.

Basic Features

• Approved for 10,000 divisions
• Excitation, AC/DC, for 10 strain gauge load cells (350Ω).
• High resolution, stable A/D converter with integrated analog and digital ltering.
• Durable and harsh conditions bright displays:
• LED 9-digit with status annunciators and
• VFD (2x40 characters) for operator dialogue.
• Alphanumeric keyboard of 33 keys
• Up to 48 opto-isolated digital I/O.
• Analog output (2 channels), 0-10V or 4-20mA,
• Rate, Load, Speed, VSD selectable output.
• 3 serial, (bidirectional), communication ports.
• RS232 or Centronics Event printer output.
• Compact panel mount enclosure with dust and spill proof keyboard.

Application

• Belt scales
• Belt scale feeder(s)

Operating Features

• Operation modes: manual, automatic, remote
• Calibration: Material, Nominal, Manual.
• Auto-Zero and xed angle compensation.
• Scale parameter setting and calibration via interactive dialogue menu.
• Protection (password or seal) of calibration and operational data against unauthorized use or accidental data changes.
• Continuous monitoring of data integrity and process variables with warning/error detection acting on UNDER/OVER or
• ALARM outputs.
• Diagnostic functions for error trouble shooting and service purposes.
• Load out software function for the delivery of preselected quantity to ships, railcars, trucks with printout of the Weighing ticket.
• Simulation mode for training and testing.
• Pulse output for external totalizers
• Feeder PID control

Additional Equipment

• Belt speed sensor assembly (190mm wheel)
• Junction box for the Loadcells and speed sensor (stainless steel).

Specications

DISPLAY - KEYBOARD

DISPLAYS: LED 9-digit, red, 10 mm. Selectable display of: Weight, Rate, Speed, Total.
VFD, 2x40 characters, 5mm with setup selectable brightness control.
Selectable display of: Operator dialogue, process variable group (1-3), Alarms.
STATUS ANNUNCIATORS: Net mode, rate, total, zero, tare, no motion, scale in use
KEYBOARD: Alphanumeric membrane keyboard of 33 keys with acoustic feedback
DECIMAL POINT SETTING: Between any digits of the weight display
WEIGHT DIGITS: 4, 5, 6

SCALE CALIBRATION & FUCTIONS

CALIBRATION: Digital calibration, menu driven. Two calibration points (Dead load and Span). The weight display can be set to any capacity and resolution with 6 digits (subject to application and regulations).
Electronic calibration can also be performed via the m V/V output values of load cells.
WEIGHING FUNCTIONS: Automatic-zero tracking, no motion detection, range monitoring, zero, tare, preset tare, net mode, multiple test functions
MEMORIES: ISP Flash ROM, Serial EEPROM, RAM and Real Time Clock with 10 year data retention.
TOTALIZERS (3): Master Total, Resetable Total, Load Total

A/D CONVERTER

TYPE: Sigma-Delta, 24bit ratiometric with integrated analogue and digital ltering.
CONVERSION RATE: Optional connection to remote A/D converter (DJB)
3 up to 228 measurements per second (set-up selectable)
SENSITIVITY: 0.4 μ V/digit for approved scales, 0.1 μ V/digit for non approved scales
ANALOGUE SIGNAL RANGE: -0.25 to 1.75 mV/V with GAIN=10 or -0.25 to 3.75 mV/V with GAIN=20
RESOLUTION: Internal : 500.000 counts, Display: selectable up to 99,000dd (in accordance with regulations)

CONTROL I/O

DIGITAL INPUTS (8 -24): 24V DC 20%, positive common, opto-isolated to 2.5 KV, selectable NO or NC
DIGITAL OUTPUTS: 24V DC 10%, transistor (SOURCE) Darlington, max. current 200mA, selectable NO or NC

POWER SUPPLY

180-260 V AC, 50Hz 5%, 5% max distortion. Max. consumption 20 VA

ANALOGUE OUTPUT

CHANNEL 1: Two independent opto-isolated channels with individual parameters. Current and voltage output.
CHANNEL 2: Standard or user calibration of zero and span. Resolution 12 bit – F.S
Voltage: 0.05-10V into 1KΩ load. Current: 0-20 mA or 4-20 mA (max. resistance 500Ω)

ENVIRONMENTAL CONDITIONS / CONSTRUCTION

EMC: Meets or exceeds OIML R76 and EN 45501 requirements
OPERATING TEMPERATURE: -10oC to +40oC approved or -25oC to +50oC non approved
-10oC to +70oC
HUMIDITY: 40%-90% RH , non condensing
ENCLOSURE: Alum, Panel mount, IP54 for front panel.
Dimensions (in mm):305 (L)x132(H)x137(T), panel cut-out: 293x118

INTERFACES

SERIAL COM. PORT #1 : RS232C, 600-19200 baud, full duplex, RTS/CTS control
SERIAL COM. PORT #2 : RS485, 600-19200 baud, half duplex, Tx enable control
SERIAL COM. PORT #3 : RS232C, 600-19200 baud, full duplex, RTS/CTS control
SERIAL COM. PORT #4 : RS485A, 600-19200 baud, full duplex or 20mA CL (TTY), 600-9600 baud, full duplex
PARALLEL PORT: Printer output, centronics type with busy and paper out control

LINEARITY & STABILITY

LINEARITY: Within 0.002% of full scale
LONG TERM STABILITY: 0.005 % of full scale per year

TEMPERATURE COEF.:Zero 1 ppm / C (chopped mode),
Span 1 ppm / C

LOAD CELL CONNECTION

NUMBER OF LOAD CELLS: Up to 10 strain gauge load cells, 350 Ω each (or more, provided min input impedance =35Ω)
EXCITATION: +5V alternating polarity or +5VDC (set-up selectable), with sense
CONNECTION TECHNIQUE: 6-wire technique

APPROVALS

ACCURACY CLASS III: EU-Type approval for 10,000 divisions (approval Nr.: DK 0199.27) & OIML R76