Indicator VPI-CDU for panel mounting
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VPI-CDU: Principle diagram reading and setting the product flow and registration of the dosed weight
VPI-CDU: filling diagram
| TYPE | VPI-CDU |
| price | € 920,= |
Prices exclusive VAT.
FUNCTIONS
- Instantaneous flow reader, in g/h, kg/h, or t/h, visualisation of the system status and of the dosed total, with analogue output (optional) proportional to the flow
- regulator of dosage hourly flow, with regulation of the belt speed or the flow of material through a programmable analogue output; completely adjustable PID (proportional, integral, derivative) algorithm
- 4 selectable operation modes, for completely manual or completely automatic dosages, managed by remote master through fitted Sysway and Modbus protocols
- reading filter of the hourly flow with configurable incidence and speed depending on the system
- dedicated relay contacts for the complete management of the alarms and the off weight or off flow blocks
- management of the current dosage total and general total of dosages, printable and clearable independently from each other
- programmable dosage target based on weight or time, with relative contact
- management of the slow flow with programmable activation threshold, for more accurate dosages
- calibration of the flow reader function, for perfectioning the dosage performances
- impulse counter of the accumulated quantity through relay contact, for direct communication with PLC or external devices
- delay programmable at the start, for synchronising various VPI systems in the dosage of material mixtures
- completely programmable printouts, for compatibility with any ASCII printer manageable through the serial port; printing of the dosage data, of the system statuses and of the totals
- fitted Sysway and Modbus communication protocols FLOW READER FUNCTION
- the flow reader mode provides for the display of the hourly flow exiting from silos, tanks, or hopper and the display of the system status and the accumulated total
- by closing the dosage start input, the system waits for the eventual set synchronisation time and enables the dosage output; if the analogue output has been configured, it transmits a signal, in voltage or in current, proportional to the hourly flow; furthermore it is possible to interrogate the instrument through the serial line and configure the set points through the fitted Modbus and Sysway protocols
- if during the dosage, the weight of the material descends below the filling start threshold, the reloading function is enabled: the analogue output is configured at fixed value and the reloading contact is enabled; upon reaching the reloading end threshold, the instrument returns into the dosage status
- the dosage ends upon reaching the configured target, or by reopening the start input
- if a printer is connected, the data of the finished dosage will be printed
- the flow regulator mode provides for the display of the hourly flow exiting from silos, tanks, or hopper and the display of the system status and of the accumulated total
- furthermore, during the dosage, the instrument regulates the flow in order to keep it equally constant with the configured flow target: if the flow increases, the instrument decreases the analogue output value in order to diminish the flow of material exiting the silo; on the other hand, if the flow decreases, the instrument increases the value of the analogue output in order to increase the flow of the exiting material
- the regulation of the flow is obtained through the completely adjustable PID (proportional, integral, derivative) control
- by closing the dosage start input, the system waits for the eventual configured synchronisation time and enables the dosage output; furthermore, it is possible to interrogate the instrument through the serial line and configure the set points through the fitted modbus and sysway protocols
- if during the dosage, the weight of the material decreases below the filling start threshold, the refilling function is enabled: the analogue output is set at a fixed value and the reloading contact is enabled; upon reaching the reloading end threshold, the instrument returns into the dosage status
- the dosage ends upon reaching the set target, or by reopening the start input
- furthermore it is possible to set a dosage slowing threshold: when this threshold is missing from the weight to be dosed, the instrument slows the system in order to maintain the set "slow flow" until the target is reached
- if a printer is connected, the data of the finished dosage will be printed
FLOW REGULATOR FUNCTIONING