VEG20650 | Schenck Weighing Controller Supplier
Introduction:
The VEG20650 Schenck weighing controller offers a graphical LCD display, 22-key keyboard, and versatile analog and binary I/O for continuous feed applications.
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Product Attributes:
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Introduction to the VEG20650 Weighing Controller
As industrial weighing systems evolve, operators demand precise control and flexible communication. The VEG20650 Schenck weighing controller meets these needs with compact electronics designed for continuous feed applications. It features a high-resolution colour LCD display with adjustable brightness and a 22-key keyboard for intuitive operation. User language is selectable and loadable, simplifying global deployment.
Key Features & Technical Specifications
- Power supply: 24 VDC +50%/-25%, max. 20 VA.
- Operating temperature: -40°C to +60°C; storage: -40°C to +80°C.
- Legal-for-trade operating temperature: -10°C to +40°C.
- Load cell input power supply: 6 VAC, min. load cell impedance 80 Ω, max. cable length 1000 m.
- Binary inputs: 5 x optocoupler 18-36 VDC, typ. 5 mA; 1 x NAMUR and 1 x NAMUR/Power 0.04-3000 Hz.
- Binary outputs: 8 x relays, max. 230 V, 8 A ohmic / 1 A inductive load.
- Pulse output: 1 x optocoupler for totalizing counter 24 V, 0.1 A, max. 10 Hz.
- Analog outputs: 2 x 0(4)-20 mA, load max. 500 Ω.
- Analog input: 0(4)-20 mA, input impedance 100 Ω, or 0-10 V.
- Serial interfaces: EasyServe, printer, large display.
- Optional internal power supply VNT 0650: 85-264 VAC/24 VDC, 1.1 A.
- Optional fieldbus: Modbus, PROFIBUS DP, DeviceNet, Ethernet/IP.
- Optional analog board VEA 20451: 2 analog outputs 0(4)-20 mA, load max. 500 Ω, potential free, common reference; 2 analog inputs 0(4)-20 mA, input impedance 100 Ω, potential free, common reference.
Applications & Use Cases
In continuous feed processes, precise weight control is critical. The VEG20650 excels in belt weighing, loss-in-weight feeders, and gravimetric feeding systems. Its NAMUR inputs handle high-speed pulse signals up to 3000 Hz, making it suitable for flow monitoring. The relay outputs can drive alarms or actuators directly. With optional fieldbus connectivity, it integrates into modern distributed control architectures.
Installation & Setup
Mount the VEG20650 in a panel cutout; optional clamps provide IP65 front protection. Connect the load cell using shielded cable up to 1000 m. Wire binary inputs to 18-36 VDC sources, observing polarity for optocouplers. For analog outputs, ensure the load does not exceed 500 Ω. Use the EasyServe PC program for convenient commissioning and automatic calibration routines.
Maintenance & Reliability
Routine inspection of the display and keyboard ensures long service life. Keep the panel seal intact to maintain IP65 rating. Verify relay operation periodically, especially under inductive loads up to 1 A. The wide operating temperature range (-40°C to +60°C) supports harsh environments. Regular calibration checks maintain legal-for-trade accuracy between -10°C and +40°C.
Compatibility & Integration
The VEG20650 communicates via serial interfaces for EasyServe, printer, and large display. Optional fieldbus modules support Modbus, PROFIBUS DP, DeviceNet, and Ethernet/IP, enabling integration with PLCs and SCADA systems. The optional analog board adds two additional analog inputs and outputs with potential-free common reference.
Frequently Asked Questions
Q: What is the power supply requirement for the VEG20650?
A: The controller requires 24 VDC +50%/-25%, with a maximum power consumption of 20 VA.
Q: Can the VEG20650 connect to a printer?
A: Yes, it includes a dedicated serial interface for a printer.
Q: What is the maximum cable length for the load cell?
A: The load cell cable can be up to 1000 m long.
Q: How many relay outputs does the VEG20650 have?
A: It has 8 relay outputs rated for max. 230 V, 8 A ohmic or 1 A inductive load.
Q: Does the VEG20650 support fieldbus communication?
A: Yes, optional fieldbus modules are available for Modbus, PROFIBUS DP, DeviceNet, and Ethernet/IP.
Q: What is the operating temperature range for legal-for-trade use?
A: The legal-for-trade operating temperature is -10°C to +40°C.
Product Support & Availability
The VEG20650 is available from PetroPartsOnline, a trusted supplier of industrial automation and oil/gas parts. In stock and ready to ship, it comes with full support for commissioning and service via the EasyServe software. Contact PetroPartsOnline for current lifecycle status and ordering details.