Control Devices for Metering and Batching Equipment
KV-03 Weighing Controller
KV-03 Weighing controller is aimed for continuous / discontinuous batching and static / dynamic weighing within conveyor, truck, railroad, platform and hopper scales.
Operation Features
- Flexible adaptation of KV-03 hardware to weighing equipment
- Generating highly stable alternating stress for each strain metering channel
- Signal smoothing (filtration) of each strain metering channel within ranges to be setup
- Operation visualization on the built-in web page
- Calibration through Internet or in-built terminal
- Integration with RFID noncontact marking system for registration of loads movement
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Example of KV-03 Application
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- truck scales
- weight calibration unit
- hopper batcher
- conveyor batcher
- platform scales
- conveyor scales
- railroad static scales
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Basic Features
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Relative error in weight metering out of the maximum weighing limit (NPV), %
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±0.02
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Input voltage if alternating current is supplied at frequency 50±0.5 Hz, V
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from 150 to 265
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Input voltage if direct current is supplied, V
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from 18 to 36
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Power demand, W
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up to 25
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Ambient temperature, ºС
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from -40 to +50
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Class of dust and moisture protection
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IP65
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* - Casing design
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KV-03 Performs the Following Functions as per In-Built Algorithm:
- Transfer to built-in terminal and upper level computer the data on weight, linear density, rate and performance
- Metering strain signal proportional to load weight on DST, up to 4 independent channels
- Metering frequency signal proportional to rotation rate of angular sensor
- Reading up to 8 control digital signals
- Generating up to 8 control relay signals
- Transfer to the upper level computer the data on weight, linear density, rate and performance through CAN 2.0 В, RS-485 interfaces (Modbus RTU protocol), Ethernet (TCP/IP protocol)
- Displaying menu and weighing parameters and 12 digit and 2 segment built-in terminal
- Zero setting and scales tare offset
- Automatic calibration
- Calibration of signal for each metering channel
- Measuring current weight, performance and accumulated weight of bulk materials having been through dynamic and static scales and transported by belt conveyors
- Integration with RFID noncontact marking system for registration of loads movement
- Saving up to 500 weighing tickets in nonvolatile memory with the reference to time and read RFID marker
- Configuring through Internet by in-built web server
- · operation visualization on the built-in web page
- 128-bit encoding of TCP/IP- data through AES protocol
- Password protection of access to data configuration
- Sending e-mail messages through SNMP protocol
- Calibration through Internet or in-built terminal
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Design
KV-03 has two design variants:
- cased (for outside mounting), dimensions - 300mm×200mm×130mm (L×W×H)
- cabinet (to be installed into cabinet)
KV-03 of cased design is provided with steel casing of IP65 protection class as per GOST 14254-96 and mounted to the panel by brackets.
KV-03 consists of optional functional modules (depending on modification):
- processor board М00 (basic module)
- up to 2 modules of digital inputs М01 (4 galvanically isolated digital inputs)
- up to 2 modules of digital outputs М02 (4 galvanically isolated relay outputs)
- up to 2 modules of analogue inputs М03 (2 strain metering inputs)
- analogue output module М04 (remote current output (4 - 20) mA)
- module M05 for EtherNet interface (TCP/IP protocol, built-in Web-server)
- module M06 for RS-485 interface (protocol Modbus RTU)
- terminal module М07 (displaying 4 symbols and 8 digits, 5 х 4 keyboard)
- module for power supply IP-24 (24 V, 1 А)
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Operation Limits
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Feature
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Acceptable value
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Min
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Nom
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Max
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General Features
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Ambient temperature, °С
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-40
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-
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+50
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Air pressure, kPa
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84
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-
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107
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Relative humidity, %
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30
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-
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80
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Parameters of Digital Inputs
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Low-level voltage, V
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0
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-
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6
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- logical one level, V
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12
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-
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36
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Parameters of Frequency Input
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- logical zero level, V
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0
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-
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4
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- logical one level, V
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12
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-
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36
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Frequency ranges for metered channel, Hz
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1
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-
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10000
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Parameters of Digital Outputs
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Incoming AC voltage, V
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-
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-
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250
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Incoming AC voltage, V
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-
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-
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110
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Commutated direct / alternating current, A
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-
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-
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3
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Parameters of Analogue Strain Metering Channel
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Number of metering channels for static weighing, ea
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-
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-
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4
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Number of metering channels for dynamic weighing, ea
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-
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-
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2
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Load resistance (from 1 to 4 sensors connected in parallel), Ohm
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95
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380
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-
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- input voltage, V
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-6
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-
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6
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Parameters of Output Analogue Signal
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Output amperage, mA
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4
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-
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20
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