PR430S2 WEIGHT INDICATOR

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PR430S21 Overview1.1 DescriptionWEIGHT INDICATORThe PR430S2 is a micro-processor based amplifier/indicator housedin a standard panel mounting DIN case. It features a sealed tactilepush-button panel with an 8 character LED display.The unit connects with 1-4 standard 350 ohm strain gauge load cellsto which it supplies 10VDC excitation. It amplifies and conditions theresultant signal to produce a gross weight value to 16 bit resolution(1 part in 65,536) with negligible drift. The relatively high inputresolution enables large standing weights to be accommodatedwithout loss of output resolution.NET and TARE push-buttons cater for manual (hand-add)applications, including cumulative weighing. Having completed oneweighment, operating TARE zeros the NET display ready for afurther weighment.A configurable RS232/RS485 serial link is provided. This allowscommunications with a host PC or PLC, or continuous transmissionof the weight signal to a remote display.This unit is factory calibrated to have a precise internal input range(PG setting 7 only) so that it may be replaced without the need forvessel emptying or re-calibration.An internal self-calibration feature effectively removes error due totemperature drift or other causes by reducing them to less than5ppm/°C.Being a micro-processor based product the PR430S2 operates fromconfiguration and calibration settings stored in non-volatile memoryi.e. protected against loss indefinitely. The configuration andcalibration data is entered and adjusted through the front panel.Similarly the weigh scale is calibrated in a single operation, byloading a known weight and by entering its value through the frontpanel or by entering precise load cell sensitivity and capacity figures.Page 4 of 40 December, 2010 Issue 3.3
WEIGHT INDICATORPR430S2All connections to the PR430S2are made by means of pluggablescrew terminal blocks.1.2 Dual Output Trip LevelsDual trip output relays are available. These present N/O (NormallyOpen) contacts which open or close depending on the Sensesettings (ref S1, S2) when the gross weight goes above the TripLevels (T1 and T2) and change back when it falls below the TripLevels minus the Dead Bands (T1-D1 and T2-D2).1.3 Model VersionsPR430S2Indicator Amplifier with Serial Interface and Dual TripsDC powered versions have a suffix 'D', e.g. PR430S2DAn optional IP65 transparent front cover is available by adding suffix'/TC' to model number, e.g. PR430S2/TC.Issue 3.3 December, 2010 Page 5 of 40
Page 3: WEIGHT INDICATORPR430S25.3.2 Modbus
Page 7 and 8: WEIGHT INDICATOR2 Operation2.1 Fron
Page 9 and 10: WEIGHT INDICATOR2.3 Data EntryPR430
Page 11 and 12: WEIGHT INDICATOR3 Configuration Dat
Page 13 and 14: WEIGHT INDICATORPR430S2Periodic tra
Page 15 and 16: WEIGHT INDICATOR4.2 Calibration Pro
Page 17 and 18: WEIGHT INDICATOR4.2.2 Calibration b
Page 19 and 20: WEIGHT INDICATOR4.2.3 Scaling Const
Page 21 and 22: WEIGHT INDICATOR5 Serial Link5.1 Ho
Page 23 and 24: WEIGHT INDICATOR5.1.3 Command SetPR
Page 25 and 26: WEIGHT INDICATOR5.1.4.2 NT : Net We
Page 27 and 28: WEIGHT INDICATORPR430S25.2 Remote D
Page 29 and 30: WEIGHT INDICATOR5.3.3 Function Code
Page 31 and 32: WEIGHT INDICATORRegisterNumberAddre
Page 33 and 34: 8110226872WEIGHT INDICATORPR430S26.
Page 35 and 36: LOAD CELLLOAD CELLWEIGHT INDICATOR6
Page 37 and 38: WEIGHT INDICATOR6.13 Wiring Diagram
Page 39 and 40: WEIGHT INDICATOR7 Equipment Faults7

PR430S2 WEIGHT INDICATOR

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