德国SCHENCK称重控制仪表VEG20650/VIF20650系列仪表
此仪表为2013年首发的新款仪表，替换VEG20610/VDM系列仪表！
Application
Designed for feeding duties in continuous
processes the INTECONT Tersus measuring
control and supervisory electronics
is specially suited for single feeders and
small gangs controlled by a host system.
The system is the right choice whenever
bulk solids have to be fed with high accuracy
with the use of
% Belt weighers (MULTIBELT® or weigh
belts with controlled prefeeders
% Weighfeeders (MULTIDOS®)
% Coriolis mass flow feeders
(MULTICOR®) [in 2012]
% Loss-in-weight feeders (discharge and
fill weighing with MECHATRON® /
AccuRate) [in 2012]
Without expensive control of the feeder
environment.
The system can also be used in special
applications i.e. in the hazardous area.
[in 2012]
The measuring control and supervisory
electronics is specially economical if the
feed system is controlled locally in normal
mode or from the display and control
panel in a central control room.
Equipment
The electronics is supplied as front-ofpanel
mounting unit or with an optional
wall-mounting housing for installation at
site. The system is operated via an ergonomically
styled keyboard organised into
operating and service functions. The
colour LCD-display shows clearly measuring
values and status information.
Equipped with appropriate communication
module INTECONT Tersus optimally fits
into any automated environment. The
Ethernet network connection is included
in the basic equipment.
Operating Principle
Although the INTECONT Tersus functions
vary with every scale type the basic
equipment is always the same:
% System accuracy for weighing tasks
better than 0.05 %
% Precise speed acquisition
% Optimal feed control for accurate
batching via an adaptive control circuit
% High electromagnetic compatibility
% Galvanically isolated outputs
% Fail-safe data memory
% Integrated diagnostics and self-testing
functions
% Preset with default values for easy
and quick commissioning
% User language in German English
Italian Spanish and French. More
languages loadable including Chinese
or Russian (Cyrillic)
% Automatic calibration programs
theoretical span calibration without
auxiliaries
% Configurable and selectable display
modes
% Simulation mode for testing and
learning
% Status event calibration and quantity
reports
Weighing Functions
The difference of set and actual feed
rates determined by comparison
forms the control output to the
feeder control circuits. As a function
of feeder type a corresponding control
signal is transferred to the
speed-controlled weigh belt the controllable
discharge unit of the loss-inweight
feeder or the controllable
feed unit of the Coriolis mass flow
feeder.
The control circuit exactly controls
the actual feed rate for setpoint.
The actual feed rate is acquired
using:
% Measured variables i.e. belt
speed and belt load with
weighfeeders
% Loss in weight in the hopper
per unit time with loss-inweight
feeders
% Direct mass flow measurement
on the Coriolis principle
(mass flow feeders)
In addition to the comprehensive
basic equipment the following
weighing functions are available:
% Weighfeeders
- Control for point of discharge
- Automatic belt run monitoring
(belt slip belt skew)
- Belt influence compensation
(BIC)
% Loss-in-weight feeders
- Adaptive fuzzy disturbance
auto elimination
- Fill control as a function of
time and/or weight
- Adaptive control adjustment
to material properties
% Coriolis mass flow feeders
- Manual and automatic zero
setting
- Prefeeder control
Designation Type Material number
Front-of-panel unit with software VBW 20650 for weighfeeder
Front-of-panel unit
Front-of-panel unit with option Modbus
Front-of-panel unit with option Profibus
Front-of-panel unit with option DeviceNet
Front-of-panel unit with option Ethernet/IP
VEG 20650
Communication modules
Modbus VSS 28020 V081902.B01
Profibus VPB 28020 V081901.B01
DeviceNet VCB 28020 V081903.B01
Ethernet/IP (software activation key) VET 20700 V040035.B01
Options
Power supply for assembly inside the device VNT0650 V082050.B01
Analog board with 2 analog inputs and 2 analog outputs VEA 20451 V054098.B01
Protection class IP65 to front panel (set of clamps) V082039.B01
