ModWeigh MW94A Instruction Manual
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ModWeigh MW94A Instruction Manual

Impact flowmeter instrument
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Impact Flowmeter Instrument
FEATURES
•
Flowrate measurement for impact
weighers
•
Flowrate Output
•
Material Totaliser
•
Modbus communications (independent
RS232 and RS485 ports)
•
USB Host & Device (memory stick & PC)
•
Field software upgrades
•
12-24Vdc power supply
•
Overall accuracy better than 0.01%
MD2,MP2 INDICATOR
•
IP54 Facia
•
2.8" (70mm) colour LCD
•
320 x 240
pixels
•
Polyester film tactile keypad
•
4-20mA output, 1 digital input & 2 digi-
tal outputs
MO3 I/O for MP2
•
4 Digital inputs
•
4 Digital outputs
•
4-20mA input (or 0-10V)
•
4-20mA output
MD1,MP1 INDICATOR
•
IP65 Facia
•
4.3" (109mm) colour LCD
•
480 x 272
pixels
•
Silicone tactile keypad
MT1 TRANSMITTER
•
Size 136 x 66 x 50mm
•
Optional removable P-Module holds cali-
bration settings
MT3 TRANSMITTER
•
Size 136 x 66 x 50mm
MR1 I/O
•
Size 136 x 66 x 30mm
•
8 Digital inputs
•
8 Digital outputs
•
4-20mA input (or 0-10V)
•
4-20mA output x 2
•
Pulse output
MW94A_IM_ALL_SV6.09f_en
Instruction Manual ALL
INCLUDES
Installation
•
Setting up principles
•
Setup Summary
•
I/O Function Table
•
Operation
•
Alarms
•
APPLIES TO
MW94A - Impact Flowmeter P-Module
•
MT1,MT3 - Transmitters
•
MD1,MD2 - Display
•
MP1,MP2 - Processor
•
MR1 - Remote IO
•
Software v6.09 onwards
•
MD1,MP1
MT1
MR1
MW94A
MD2,MP2
MT3
EMC INDUSTRIAL GROUP LTD

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Summary of Contents for ModWeigh MW94A

  • Page 1 Alarms • • Modbus communications (independent RS232 and RS485 ports) APPLIES TO • USB Host & Device (memory stick & PC) MW94A - Impact Flowmeter P-Module • • Field software upgrades MT1,MT3 - Transmitters • • 12-24Vdc power supply MD1,MD2 - Display •...
  • Page 2 EMC INDUSTRIAL GROUP LTD Features AVAILABLE DOCUMENTATION PRODUCT DESCRIPTION DOCUMENTATION MW61 Weigher Instrument Technical Information Instruction Manual MW64 Batch Weigher Instrument Technical Information Instruction Manual MW65 Process Weigher Instrument Technical Information Instruction Manual MW93 Weight Change Instrument Technical Information Instruction Manual MW94 Impact Flowmeter Instrument Technical Information...

  • Page 3: Table Of Contents

    Communications & Display Measuring Range IO Summary Display Resolution Specifications Main Calibration Loadcell Input AI1 SETUP – MW94A IMPACT WEIGHER ......28 Analog Input AI2 Basic Settings Analog Outputs AO1 & AO2 Engineering units Pulse Input IN0 - frequency input Measuring range...
  • Page 4 EMC INDUSTRIAL GROUP LTD Features Comms port 1 – RS232 Modbus Access Comms port 2 – RS485 OPERATION ............49 Display Display CompactCom Keys Information & Resets Operator Menu Product Information Actions Reset settings Settings Other display settings Alarm menu I/O Function Table OPERATING DETAILS..........

  • Page 5: Introduction

    EMC INDUSTRIAL GROUP LTD Features INTRODUCTION Features Basic Units & Resolution The units for each variable type (weight etc.) can be selected from a list of metric and imperial units. The resolution of each variable type can be adjusted, this alters the count by e.g 100kg displayed in 0.2kg increments.

  • Page 6: Communications & Display

    Communications & Display Comms RS232 and RS485 ports are available. These are used to connect ModWeigh units together and also to connect to other systems. The protocol is either ASCII output for example to drive a printer or Modbus for interactive communications. Baud rates and node addresses are programmable.

  • Page 7: Specifications

    EMC INDUSTRIAL GROUP LTD Specifications Specifications Loadcell Input AI1 Input Range ±4 mV/V (0-20mV) Excitation 5 Vdc ±20 %, 250 mA maximum current Signal processing rate 100 Hz (response time setting≤ 0.5 s) Input sensitivity 0.5 µV/division maximum Zero range ±3 mV/V (±15 mV) Zero drift ±0.02 µV+0.0005 % of deadload/°C typical...

  • Page 8: Digital Outputs Outx (Except Out0)

    EMC INDUSTRIAL GROUP LTD Dimensions Digital Outputs OUTx (except OUT0) Max output current Σ I < 0.25 A Output voltage same as supply voltage Communications COM1, COM2 & COM3 COM1 Interface RS232 COM1 Handshake CTS can be enabled COM2/COM3 Interface RS485 Baud rates 9600, 19200, 38400, 57600, 115200 (230400 on COM2)

  • Page 9: Mt1 Transmitter

    DIN rail mount Connections Motor integration The following diagrams show various methods to connect a ModWeigh to a VSD drive or motor contac- tor. VSD Drive, keypad run/stop ModWeigh keypad used to start and stop the system. Can be used for batching applications.

  • Page 10: Batch Weighing

    [OUT3, 56] motor contactor overload NOT stop [INx, -1] Motor Contactor, run/stop buttons External START / STOP buttons connected to ModWeigh instrument controlling motor contactor. +24V START STOP overload motor contactor (mc) run [IN3, 2] disable START key •...

  • Page 11: Run/Stop/Pause Logic

    Connection Principles ModWeigh instruments can be configured in many different ways to suit any given application. The display is normally located to suit an operator. The transmitter can be located in the field to reduce field wiring or can be located with the display for a more conventional approach.

  • Page 12: Connection Diagram - Mp2

    {MT1} OUT5 weight fault paused OUT6 OUT7 flowrate enabled OUT8 alarm alert COM3 PC, PLC −D TOTALISER ModWeigh Display Pulse Output MD1,MD2 +/~ OUT0 input −/~ OUT0 Analog Outputs +mAO2 Analog Input 2 weight +VI2 −mAO2 +mAI2 +mAO1 flowrate −AI2...

  • Page 13: Connection Diagram - Mp1

    {MT1} OUT5 weight fault OUT6 paused OUT7 flowrate enabled OUT8 alarm alert COM3 PC, PLC −D TOTALISER ModWeigh Display Pulse Output MD1,MD2 +/~ OUT0 input −/~ OUT0 Analog Outputs +mAO2 Analog Input 2 weight +VI2 −mAO2 +mAI2 +mAO1 flowrate −AI2...

  • Page 14: Connection Diagram - Mt1

    {MT1} OUT5 weight fault OUT6 paused OUT7 flowrate enabled OUT8 alarm alert COM3 PC, PLC −D TOTALISER ModWeigh Display Pulse Output MD1,MD2 +/~ OUT0 input −/~ OUT0 Analog Outputs +mAO2 Analog Input 2 weight +VI2 −mAO2 +mAI2 +mAO1 flowrate −AI2...

  • Page 15: Connection Diagram - Mt3

    The loadcell(s) may be wired directly to the loadcell terminals or connected together in the field with a junction box and connected to the ModWeigh unit with a single cable. When connected to the terminals only a 4-wire connection is used, and digital corner adjustments are possible.

  • Page 16: Tacho Connections

    Multidrop Systems ModWeigh instruments can be connected using the COM2 RS485 bus. Up to 10 systems may be con- nected on the bus. A ModWeigh display can select any one of the systems on the bus to work with. MW94A_IM_ALL_SV6.09f_en...

  • Page 17: Setting Up

    An external Modbus master can alternatively be connected to an RS232 COM1 port. An MR1 unit cannot share the bus with a non ModWeigh master such as a PLC. A PLC could be con- nected using the COM3 port on the MR1.
  • Page 18 EMC INDUSTRIAL GROUP LTD Setup SETUP Basic Settings Loadcell OUT1 Calibration OUT2 Inputs Internal Signals Outputs OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 COM1 Communications & Display Macros COM2 Information, Resets & Final Calibration Setup Diagram Settings Macros The Setup contains which are described next.

  • Page 19: Keypad

    EMC INDUSTRIAL GROUP LTD Setup Keypad MD1,MP1 Keypad ALARM SELECT DISPLAY SOFT KEYS SETUP BACK LEFT ENTER RIGHT DOWN MD2,MP2 Keypad ALARM SELECT DISPLAY SOFT KEYS SETUP BACK LEFT ENTER RIGHT DOWN SOFT keys The function of the 5 soft keys is indicated on the display. ALARM key Used to access the alarm list menu.

  • Page 20: Description Of Menus

    EMC INDUSTRIAL GROUP LTD Setup You can use the UP and DOWN keys to highlight a menu or sub-menu item, then press the ENTER key to continue from there. When viewing a setting, the UP and DOWN keys will move between the set- tings.

  • Page 21: Macros

    Used to encode printable characters (Unicode values 0 to 65536) outside the ASCII range.Sends the Unicode characters out COM1 with UTF8 encoding. Some characters can be used in the “system name macro” to appear on a ModWeigh display. arg0 and arg1 must be in the range 1 to 128.
  • Page 22 EMC INDUSTRIAL GROUP LTD Macros Alternate Instructions UC = (arg0 - 1) + (arg1 - 1) × 128 ‹ ‹ ALT0 arg1› arg0› UC = (arg0 - 1) + (arg1 - 1) × 128 + 16384 ‹ ‹ ALT1 arg1› arg0›...
  • Page 23 EMC INDUSTRIAL GROUP LTD Macros Print Instructions PRINT_MENU_HEADING ‹column› is a number 1 to 99. Columns are numbered from 0. PRINT_MENU_PATH PRINT_QUICK_KEY FORMAT “format” NEWLINE ‹macro› is number 1 to 99. If ‹macro› = 101, lists macro number in NEWPAGE VALUE.

  • Page 24: Adjusting A Macro

    EMC INDUSTRIAL GROUP LTD Macros Looping and Control Instructions DRIVE_BIT ‹bit› value test IF ‹condition› 1-150 See I/O Function Table IF_EVENT ‹event condition› value test value test VALUE›=0 VALUE_ALTERED AND ‹condition› VALUE›0 VALUE_NOT_ALTERED OR ‹condition› VALUE=0 VALUE_VIEW_ONLY ELSE VALUE‹›0 DEC_temp1=0 END_IF VALUE‹0 with_stack...

  • Page 25: Software Updating

    Press this key to delete the code at the cursor. Software Updating ModWeigh instrument software can be upgraded in the field to add new features and other improve- ments. The following diagram shows the setup required for this purpose. Update with USB Drive...

  • Page 26: Update With A Pc

    ENTER at each stage. Restore and/or check settings. If this does not work, then turn the power off to the ModWeigh instrument and back on again as in- structed by the ModUpdater program. If you have any problems, you can contact your supplier.

  • Page 27: Initial Setup

    EMC INDUSTRIAL GROUP LTD Initial Setup Step Quick Keys OUTPUTS Change the 4-20mA output calibrations 241x 242x Set the digital output terminal functions 243x INFORMATION, RESETS & FINAL CALIBRATION Set key locks or customise the display 256xx Initial Setup Before calibration can be done, the system integrators will need to have completed any setup to allow the system to be run, and you will need to be able to run the system.

  • Page 28: Setup - Mw94A Impact Weigher

    EMC INDUSTRIAL GROUP LTD Basic Settings SETUP – MW94A IMPACT WEIGHER Basic Settings Basic Settings Inputs Internal Signals Outputs Communications & Display Information, Resets & Final Calibration Engineering units These settings affect the engineering units that will be used for many other settings. The engineer- ing units can be changed at any time.

  • Page 29: Inputs

    EMC INDUSTRIAL GROUP LTD Inputs Daylight saving Q21921 locality 9912 Selects the locality for daylight saving correction. Use the UP & DOWN keys to select a locality or set to 0 to disable daylight saving correction or set to CUSTOM to set your own correction dates. If CUSTOM is selected, the following three settings specify when the correction will be made.

  • Page 30: Calibrate Loadcell

    EMC INDUSTRIAL GROUP LTD Inputs Q22313 4 or 6 wire connection 8128, g1 auto=0 Selects if the loadcell has a 4 wire or 6 wire connection to the instrument. If set to auto, it will power up in 6 wire mode, but switch to 4 wire mode if there is no sense voltage detected. Q22314 loadcell scan 8168, g7...

  • Page 31: Current/Voltage Input

    EMC INDUSTRIAL GROUP LTD Inputs Key in the total loadcell capacity followed by ENTER. This is normally the sum of all of the loadcell capacities (e.g. 4 x 100kg loadcells = 400kg total capacity). Press BACK then 2 (or press the DOWN key) to move to the ‘system sensitivity’ step (QK 22332).

  • Page 32: Internal Signals

    EMC INDUSTRIAL GROUP LTD Internal Signals Q2245 AI2 signal type 8148, g2 This allows correct units and ranging to be applied to the AI2 signal. For example a setting of 1 con- verts the signal to a weight, a setting of 3 converts the signal to a flowrate. Q2246 AI2 signal low 8150, g2...

  • Page 33: Flowrate

    EMC INDUSTRIAL GROUP LTD Internal Signals total weight just reaches the ‘batch weight’ by the time the system has come to a complete stop. Flowrate Q2333 flowrate 8762 t/h,kg/h Displays the flowrate. Q2336 dynamic filter [0=off,1=low,2=medium,3=high] 8298, g6 Additional flowrate filtering. Does not affect the control loop settings. Large signal fluctuations are filtered less than small signal fluctuations.

  • Page 34: Events/Alarms/Faults

    EMC INDUSTRIAL GROUP LTD Internal Signals Q23513 limit 1 delay 8352, g7 0.00 s Sets a delay to activate or de-active the limit. Q23514 setpoint 1 8330, g7 Sets the limit value. Q23515 setpoint 1 preact 8356 Sets the preact value. Limit 2 Q23521 limit 2 source (modbus address of signal)

  • Page 35: User Data

    EMC INDUSTRIAL GROUP LTD Internal Signals memory usage description default memory store name disabled custom setpoint 1 PRODUCT setpoints 1 & 2 PRODUCT loadcell calibration CALIBRATION calibration constant K not used Q23812 data 1 source 8670, g8 Q23813 data 2 source 8672, g8 Q23814 data 3 source...

  • Page 36: Outputs

    EMC INDUSTRIAL GROUP LTD Outputs Outputs Basic Settings Inputs Internal Signals Outputs Communications & Display Information, Resets & Final Calibration Analog output 1 (flowrate) These variables select which signal should appear on the analog output and how it is to be scaled. The speed demand varies from 0 to 100 % where 0 % means stopped and 100 % means maximum speed.

  • Page 37: Digital Outputs

    EMC INDUSTRIAL GROUP LTD Communications & Display Digital outputs The following settings select the function of the digital outputs. The hint line shows (off) when the output is at 0V, and (on) when it is at +V1. The UP and DOWN keys can be used to select the function from the available list. If the negative value of the output function is used, the signal sense is reversed.

  • Page 38: Comms Port 3 - Rs485 Mr1

    EMC INDUSTRIAL GROUP LTD Communications & Display Q2524 COM2 mode 8838, g12 COM2 mode description auto : use mwbus – automatic fall back to modbus slave modbus : use standard modbus If this port is connected to an external modbus master, then this should be set to modbus. Q2520 COM2 error count 8812, g12...
  • Page 39 EMC INDUSTRIAL GROUP LTD Communications & Display Print options Q25521 print continuous rate 8610, g13 Sets the rate at the which the print continuous macro is run. Use the UP and DOWN keys to select the rate. Q25522 disable macros [0=off, 1=on] 8616, g13 Disables all macros from running.

  • Page 40: Display (Md1,Md2,Mp1,Mp2)

    EMC INDUSTRIAL GROUP LTD Communications & Display Q25547 information subroutine 2600, g13 A subroutine used by several macros to print information about the system. Q25548 user subroutine 1 2700, g13 This macro is not used by default, and is free for the user to use. Q25549 user subroutine 2 2800, g13...
  • Page 41 EMC INDUSTRIAL GROUP LTD Communications & Display Q25611 start lock 8620, g4 Q25612 stop lock 8622, g4 Q25613 toggle volumetric mode lock 8624, g4 Q25614 toggle remote mode lock 8626, g4 Q25615 set local flowrate lock 8628, g4 Q25616 set manual speed lock 8630, g4 Q25617 batch setpoint lock...
  • Page 42 EMC INDUSTRIAL GROUP LTD Communications & Display Value Display Description N1U1 100t/h display flowrate N1U1 hide flowrate 2048 N1U1 6543.21t display running total (in place of flowrate) 2049 (2048+1) N1U1 1000.00t display batch weight (in place of flowrate) N2U2 1000rpm display speed (rpm) N2U2 hide speed (rpm)

  • Page 43: Usb

    8938 Set to 1 to save the setup to a file on a USB drive. It is saved in a folder called ModWeigh\Setup. The file will be named ‘AA PP SSSSS MM.csv, where AA is the modbuss address of the unit, PP is the prod- uct number, SSSSS is the units serial number and MM is the model of the unit.

  • Page 44: Reset Settings

    EMC INDUSTRIAL GROUP LTD Basic Settings Q2616 P-Module serial number 8860 Displays the serial number of the P-Module. Q2617 MR1 serial number 8862 Displays the serial number of the MR1 unit if connected. Q2618 MO3 serial number 8866 Displays the serial number of the MO3 option if fitted. Reset settings Q2631 reset loadcell calibration (1=reset to defaults)

  • Page 45: Communications & Display

    EMC INDUSTRIAL GROUP LTD Communications & Display Set clock Q921931 set date 9922 Sets the date. For example to set 9 March 2007, enter 070309. Q921932 set time 9924 Sets the time in 24hour format. Communications & Display Comms port 1 – RS232 Q92511 COM1 baud rate (8 data, no parity, 2 stop) 8580...

  • Page 46: Compactcom

    EMC INDUSTRIAL GROUP LTD Information & Resets Q925699 select baudrate select baudrate description auto : scan through all baudrates to find a controller fixed : use port baudrate setting Q925690 connection test Tests whether the connection to the connected transmitter or processor is working. Useful to diagnose problems with communications links.
  • Page 47 EMC INDUSTRIAL GROUP LTD I/O Function Table Input Functions (edge sensitive ) CONTROL1 acquire zero 0 Ϯ The control1 register contains 16 level sensitive input signals. This register has 5 1 Ϯ control sources which are combined together. 2 Ϯ 3 Ϯ...
  • Page 48 EMC INDUSTRIAL GROUP LTD I/O Function Table Output Functions limit 1 output limit 2 output limit 3 output in remote flowrate mode OUT0 OUT9 MO3 fitted disable macros MR1 connected Output Functions This register hold the state of inputs IN1 to IN8 and outputs OUT1 to OUT8. The status of IN0, IN9, OUT0 and OUT9 are in the status3 register OUT1 OUT2...

  • Page 49: Operating Details

    OPERATING DETAILS Modbus Access The communications ports of the ModWeigh Controllers (COM1 and COM2) use Modbus protocol. This can be used to access any data value and any user setting. The Modbus protocol supported is RTU. (ASCII mode is not supported). Transmission is with 8 data bits, no parity and 2 stop bits.

  • Page 50: Keys

    EMC INDUSTRIAL GROUP LTD Keys Identification of selected unit. Press SELECT ( ) to view and select another unit from list of units connected. Alarm Symbol flashes when an alarm is present. Main display of measured value. Normally weight. A group of annunciators described below. Paused.

  • Page 51: Actions

    EMC INDUSTRIAL GROUP LTD Keys Soft key icon for this function. See Actions and Settings below for a description of these icons. Quick key number. Press key with same number to directly enter the named menu. Alternatively use the UP and DOWN keys to select and item and press ENTER. Type of menu entry open another menu.

  • Page 52: Settings

    EMC INDUSTRIAL GROUP LTD Keys acquire zero Press this key to zero the weight display. user function 1 This key may be customised for a particular application. user function 2 This key may be customised for a particular application. user function 3 This key may be customised for a particular application.
  • Page 53 EMC INDUSTRIAL GROUP LTD Keys Alarms Alarm Comments AI1 < -4mV/V: faulty loadcell or wiring AI1 > 4mV/V: faulty loadcell or wiring weight fault weight too low weight too high no sense voltage: faulty loadcell or wiring flowrate fault flowrate too high user fault 1 user fault 2 user fault 3...

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