Position: This Single Component Batching Controller PR 1614 from Sartorius is specially designed for that range of batching applications which require only one component to be batched in charge or discharge mode. Furthermore the conjunction of a charge and discharge process can be selected.
Single batches, a predefined number of cycles or even continuous processing can be chosen. In conjunction with higher level process control equipment even multicomponent batching processes with maximum 30 components can be performed. The data and command interchange can be easily made by communication via serial interface, the interlock to the process via control inputs and outputs.
• Operator controlled single component batching or multicomponent batching in conjunction with supervisory systems
• EC conformity certificate 3000d according to EN 45 501 (for PR 1614/02)
• Maximum 10,000 display divisions for weight indication by the weight indicator
• Dialogue oriented operation
• Batch and consumption report via print-out
• Freely programmable functions for control inputs and outputs
• Weight data output and/or communication via max. 2 optional serial interfaces
The PR 1614 can be fully manually controlled via display and keyboard. The bright and rich in contrast vacuum fluorescent display assures good readability over wide viewing angles even under bad conditions, and the IP 65 front panel withstand rough industrial environment.
Due to a loadcell connection in 6-wire technique, distances of up to 300m between the PR 1614/01 and the load cells are permitted without any loss of accuracy. Maximum 6 load cells of 650¥ or 4 of 350¥ input resistance can be connected.
Description
The Single Component Automatic Batching Controller PR 1614 consists of an aluminium housing containing a main printed circuit board on which all components including the analogue module are mounted. The well proven analogue module itself consists of a small pcb in a sheet metal housing which ensures good protection against interference.
The front panel contains a small pcb with keyboard and a vacuum fluorescent tube for weight data, parameter and status display. Due to the coverage with an integral front foil, it fulfils the requirements for protection class IP 65.
All cable connections are made via provisions at the rear, either connectors or pluggable screw terminals. All settings and adjustments are executed by keyboard and display.
Operation
The Single Component Batching Controller PR 1614 can be used in the following operating modes:
• Stand-by
• Data entry
• Batching
• Data output
• Configuration / Calibration / Test
Stand-by
All operating modes end automatically by return to the Stand-by mode showing gross weight. Furthermore, all operating modes except Batching and Data output can be left by actuating the ENTER key. This also effects a return to the Stand-by mode.
Configuration / Calibration / Test
Access to these modes is initiated by pushing the keys ENTER and ABORT/> simultaneously. The last entered parameters appears. Configuration parameters indicated by Cxx comprise all non-scale adjustment relevant parameters (e.g. baud rate of serial interface or function allocation of control outputs). All parameters can be scanned with the keys DISCH (Next) and TEST (Prev). With the keys = and > either the choices can be scrolled or the value increased respectively decreased. In addition to that new values can be entered by using the numeric keys. If the configuration parameters are protected by pass number, the corresponding pass number has to be entered first to enable the changes.
Calibration parameters indicated by Fxx, comprise all parameters concerning the scale adjustment. They can also be scanned, but only be changed, if the switch at the rear is in position CAL. The way of changing values or choices is the same as mentioned above. The test functions indicated by txx can be used for function tests of the instrument e.g. display. The access can be protected together with the access to configuration parameters.
Parameter entry
Access to batching parameters is only possible in Stand-by mode. It is given by pushing the corresponding key followed by CHARGE and DISCH. The last displayed data are stored after pushing the ENTER-key. During the entry the symbol Z is flashing. If these parameters are protected by pass number, the corresponding pass number has to be entered first to enable the changes.
Batching
The operating mode Batching can be used for charge or discharge batch weighing applications. In addition to that the combination of charge and discharge batching can be selected.
After pushing of the key SET PT CHARGE or SET PT DISCH the corresponding last used setpoint is displayed and the symbol Z is flashing. Changes are possible via = and > or numeric keys.
The batching process starts after pushing the corresponding key again. Now net weight is displayed and the symbol Z is lit.
The batching sequence works as follows:
• Coarse batching until present point is reached
• Switch-over to fine batching until overshoot setpoint is reached
• If net weight minus setpoint is negative and bigger than the overshoot, fine batching is restarted
• If net weight minus setpoint is bigger than the tolerance setpoint tolerance alarm is activated, which has to be accepted
• In case of alarms the symbol (is flashing until the alarm is cancelled After finalizing the component, symbol Z is blanked and the component data can be given out via serial interface to printer or supervisory system.
Data output
The configuration, calibration and batching parameters can be printed out for recording purposes.
Furthermore the contents of the parameter and the consumption table can be printed out.
Benefits
• Minimum costs for batching equipment installation and commissioning (due to its standardised interfaces and simple set-up)
• Minimum costs for training and operating errors (due to its simple and clear operation)
• Minimum maintenance cost (due to its long-term stability and reliability)
• Minimum costs for function errors (due to continuous self-test)
Technical Data
Load Cell Connection
All strain gauge loadcells; 6-wire connection for Weight & Measurements recommended, 4-wire technique possible, cable length max. 300m.
Load Cell Supply
Supply voltage:
12VDC, shortcircuit protected
Minimum Load: 87¥ (4 x 350¥).
Measuring Range
Span: 2.4mV to 36mV
(for 100% nominal load).
Dead load: 0.24mV… 33.6V
There is no interaction between span and dead load adjustment.
Analogue Filter
Active Butterworth low pass filter,
40dB/decade, usable frequency fc = 2Hz
Measuring Principle
ADC-type: Integrating converter, ratiometric to load cell supply
Conversion time: 30ms.
Measuring time: 60ms and
multiples of 60ms
Internal resolution: up to 50.000 counts
Temperature Effects
Zero: 0.25μV/K RTI = 0.02% /10 K
at 1mV/V (PR 1614/01)
Zero: 0.15μV/K RTI = 0.012%/10 K
at 1mV/V (PR 1614/02)
Span: 0.02% /10 K (PR 1614/01)
Span: 0.006% /10 K (PR 1614/02)
Linearity
Linearity error: 0.03% (PR 1614/01)
Linearity error: 0.007% (PR 1614/02)
Batching Accuracy
PR 1614/01: Up to 1000d OIML class IIII according to local approval
PR 1614/02: EC conformity certificate.
Accuracy class III 3000d acc. to
EN 45 501; corresponds to OIML R76
Digital Section
EPROM: 64kb
Static RAM: 8kb
EAROM: 024 bit (for calibration data)
Display
Type: vacuum fluorescent display
Elements:
7-digit 7 segment, height: 12.5mm, plus weight and status symbols
Keyboard
Elements:
18 keys with tactile feedback for operation,
calibration, configuration and test.
Control Input
Number of inputs: 2, optocoupler – isolated
Input voltage:
10… 31VDC for high status
0… 5VDC for low status
Input current:
5mA at 12VDC
11mA at 24VDC
Functions: Selectable in configuration mode
Control Outputs
Number of outputs:
4, potential free relay contacts
Contact rating:
250VAC/4A max.
Rating for DC:
250VDC/0.4A max.
50VDC/1.0A max.
30VDC/4.0A max.
(spark suppression recommended) Functions: Selectable in configuration mode
Serial Interfaces
2 optional bidirectional serial interfaces for communication and/or connection of peripherals, to be realised by plug-in
modules:
PR 1601/00 – Current loop TTY
PR 1602/00 – RS 232
PR 1604/00 – RS 422/485
Up to 6 Load Cells
Cable Junction Box
SW-Option
PR 1614/51 Communication Option for
• Modbus/JBus
• Dust 3964 (on request)
PR 1609 Real time clock Serial Interfaces (2 free selectable)
• PR 1601/00 Current loop
• PR 1602/00 RS 232(V24)
• PR 1604/00 RS 422/RS 485
