Table of Contents
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FEATURES
•
Flowrate measurement and control for
loss-in-weight (or gain-in-weight) sys-
tems
•
Motor Speed Control Output Signal
•
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
MW93A_IM_ALL_SV6.09f_en
Weight Change Instrument
INCLUDES
Installation
•
Setting up principles
•
Setup Summary
•
I/O Function Table
•
Operation
•
Alarms
•
APPLIES TO
MW93A - Weight Change P-Module
•
MT1,MT3 - Transmitters
•
MD1,MD2 - Display
•
MP1,MP2 - Processor
•
MR1 - Remote IO
•
Software v6.09 onwards
•
BULK HOPPER
feed gate
loadcells
WEIGH HOPPER
VSD & MOTOR
Instruction Manual ALL
MD1,MP1
MT1
MR1
EMC INDUSTRIAL GROUP LTD
MW93A
MD2,MP2
MT3
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Summary of Contents for ModWeigh MW93A
- Page 1 • Flowrate Output • • Material Totaliser APPLIES TO • Modbus communications (independent MW93A - Weight Change P-Module • RS232 and RS485 ports) MT1,MT3 - Transmitters • • USB Host & Device (memory stick & PC) 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...
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Page 3: Table Of Contents
Engineering Units Inputs Measuring Range Internal Signals Display Resolution Outputs Communications & Display Main Calibration Sequence IO Summary SETUP – MW93A WEIGHT CHANGE......30 Configurations Basic Settings Specifications Engineering units Loadcell Input AI1 Measuring range Analog Input AI2 Display resolution Analog Outputs AO1 &... - Page 4 EMC INDUSTRIAL GROUP LTD Features Basic Settings OPERATING DETAILS ..........55 Clock Setpoint & Speed Demand Signals Modbus Access Communications & Display Comms port 1 – RS232 OPERATION ............56 Comms port 2 – RS485 Display Display Keys CompactCom Operator Menu Information &...
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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: Outputs
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: Io Summary
Features Computer Connectivity ModWeigh instruments can be connected to a computer withan RS232 connection. Data can be sent to the PC at a preset rate. The data sent can be set up using macros. There is also a command line interface which allows any of the settings and data to be read or written. - Page 8 EMC INDUSTRIAL GROUP LTD Features Weight Gain BULK HOPPER Features interrupted flow • simple installation • FLOW REGULATOR ideal where bulk hopper & feeder already • exist loadcells WEIGH HOPPER control valve Flow Regulators SCREW FEEDER DRUM FEEDER BELT FEEDER TABLE FEEDER ROTARY VALVE PUMP...
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Page 9: Specifications
EMC INDUSTRIAL GROUP LTD Specifications 100.00 flow rate r es pons e[s], incr e m ental loadcell accuracy[%] 50s, 0.1%; 14s, 0.03% 50s, 0.03%; 14s, 0.01% 50s, 0.01%; 14s, 0.003% 10.00 50s, 0.003% 1.00 0.10 0.01 RATIO (flow r ate [kg/h] / loadcell capacity[k g]) The loadcell incremental accuracy measures how accurately a loadcell can measure small changes in weight. -
Page 10: Digital Inputs Inx
Speed demand signal (4-20mA) wired to motor speed controller with shielded cable. If the control feeder motor run/stop is controlled remotely (by PLC etc), then the ModWeigh RUN input must be connected. It must be ON when the weigh belt motor is running. In this case the START key on the MD1,MD2 display should be disabled when the system is commissioned. -
Page 11: Md2 Display
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 12: Batch Weighing
[OUT3, 56] VSD run input VSD speed input 4-20mA − − Motor Contactor, keypad run/stop ModWeigh keypad used to start and stop system. Contactor used to run motor. +24V run motor overload [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. -
Page 13: Run/Stop/Pause Logic
[INx, 31] PAUSED paused [OUTx, 58] disable START key • [OUTx, output function] ModWeigh digital output [INx, input function] ModWeigh digital input ModWeigh analog output − Run/Stop/Pause Logic The following table describes how the status is affected by the inputs. -
Page 14: Connection Principles
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 15: Connection Diagram - Mp2
OUT5 weight fault low flow fault OUT6 OUT7 not filling or discharging OUT8 alarm alert COM3 PC, PLC −D TOTALISER ModWeigh Display Pulse Output MD1,MD2 +/~ OUT0 input −/~ OUT0 Analog Outputs +mAO2 Analog Input 2 flowrate +VI2 −mAO2 +mAI2... -
Page 16: Connection Diagram - Mp1
OUT5 weight fault OUT6 low flow fault OUT7 not filling or discharging OUT8 alarm alert COM3 PC, PLC −D TOTALISER ModWeigh Display Pulse Output MD1,MD2 +/~ OUT0 input −/~ OUT0 Analog Outputs +mAO2 Analog Input 2 flowrate +VI2 −mAO2 +mAI2... -
Page 17: Connection Diagram - Mt1
OUT5 weight fault OUT6 low flow fault OUT7 not filling or discharging OUT8 alarm alert COM3 PC, PLC −D TOTALISER ModWeigh Display Pulse Output MD1,MD2 +/~ OUT0 input −/~ OUT0 Analog Outputs +mAO2 Analog Input 2 flowrate +VI2 −mAO2 +mAI2... -
Page 18: 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 19: Multidrop Systems
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 20: Setting Up
Setting the COM1 Modbus Address Before a multidrop system will operate, the addresses in each of the ModWeigh units will need to be set differently. This can be done by wiring a link or resistor to the ADS terminal where available. See the table on the connection diagram. -
Page 21: Keypad
EMC INDUSTRIAL GROUP LTD Setup Basic Settings The basic settings are settings which generally must be set first and often affect other settings through the controller. For example, they set the engineering units and measuring range for the application. Inputs The inputs are settings and calibration which effect the basic inputs signals. -
Page 22: Displaying The Setup Menus
EMC INDUSTRIAL GROUP LTD Setup SETUP key Press to view the setup menus. ALPHANUMERIC keypad Used to enter numerical data values. UP and DOWN keys Use these keys to move up and down a menu, or to increase or decrease a setting when editing is en- abled. -
Page 23: To Adjust A Setting
EMC INDUSTRIAL GROUP LTD Setup Service Service menu contains all standard settings as well as settings for advanced configuration and diagnos- tics. Use this menu if there are special application requirements, or if special diagnostics are required. This menu includes the Factory settings, for which certified equipment is required. These settings are not documented in this manual, contact the factory for further information. -
Page 24: 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 25 EMC INDUSTRIAL GROUP LTD Macros Register Instructions MENU ‹argument› ‹argument› action start_menu next_quick next_service next_factory next_altered MACRO ‹argument› ‹argument› action start_macro next_macro next_ altered _macro Print Instructions PRINT_VALUE “format” is an ASCII format code of the form CcDdBb. c is the column width, d is the number of decimal places and b is the count by.
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Page 26: 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 27: 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 28: 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 29: Initial Setup
EMC INDUSTRIAL GROUP LTD Initial Setup Step Quick Keys Change the totaliser resolution and when the totaliser operates 234x Change the PI settings to improve the loop control stability 2371x Improve the step response time with the feed forward settings 2374x OUTPUTS Change the 4-20mA output calibrations... -
Page 30: Setup - Mw93A Weight Change
EMC INDUSTRIAL GROUP LTD Basic Settings SETUP – MW93A WEIGHT CHANGE 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 31: Clock
EMC INDUSTRIAL GROUP LTD Basic Settings To have the filling controlled by the time, set the high setpoint to 0 and the ‘feed gate delay’ to the de- sired filling time. * Q2181 control function 8088, g0 The control function sets whether the system is a weight loss or weight gain system. Weight loss Weight gain (control function = 0) -
Page 32: Inputs
EMC INDUSTRIAL GROUP LTD Inputs Inputs Basic Settings Inputs Internal Signals Outputs Communications & Display Information, Resets & Final Calibration Digital inputs The following settings select the function of the digital inputs. The hint line shows (off) when there is no voltage present, and (on) when voltage is applied to the input. -
Page 33: Calibrate Using Loadcell Specifications
EMC INDUSTRIAL GROUP LTD Inputs Press EDIT and enter the value of the test weight followed by the ENTER key and wait while the display shows ‘Calibrating, please wait…’. If possible, remove and apply the test weights several times checking the weight reading each time. -
Page 34: Current/Voltage Input (Remote Flowrate Setpoint)
EMC INDUSTRIAL GROUP LTD Inputs Q22352 AI1 signal P 8710 mV/V Q22353 AI1 signal Q 8712 mV/V Q22354 AI1 signal R 8716 mV/V Q22355 AI1 signal S 8718 mV/V Displays each loadcell signal when scanning has been enabled. (refer to Q22314) Q22350 loadcell check 8914, g7... -
Page 35: Internal Signals
EMC INDUSTRIAL GROUP LTD Internal Signals local/remote option description default When in local mode, the run input function is disabled. When in remote mode, the start/stop key functions are disabled. Internal Signals Basic Settings Inputs Internal Signals Outputs Communications & Display Information, Resets &... -
Page 36: Totaliser
EMC INDUSTRIAL GROUP LTD Internal Signals Q2337 flowrate filter [0s, 0.5s, 0.7s, 1s, 1.4s, 2s, 3s, 5s, 7s, 10s, 14s, 8308, g6 20s, 30s, 50s] Additional flowrate filtering. Does not affect the control loop settings. Averages out fluctuations in the flowrate. The amount of filtering does not depend on the signal ampli- tude. -
Page 37: Check Flowrate Measurement
EMC INDUSTRIAL GROUP LTD Internal Signals Press the SPEED DEMAND key and the display will beep and show the speed demand setting. Press the EDIT key. Key in 100 and press ENTER to set the spend demand to 100%. Adjust the motor controller max speed control so that the motor runs at the maximum de- sired speed. -
Page 38: Events/Alarms/Faults
EMC INDUSTRIAL GROUP LTD Internal Signals Limit 2 Q23521 limit 2 source (modbus address of signal) 8360, g7 Q23522 limit 2 mode 8364, g7 low limit = 1 Q23523 limit 2 delay 8362, g7 0.00 s Q23524 setpoint 2 8332, g7 Q23525 setpoint 2 preact 8366... - Page 39 EMC INDUSTRIAL GROUP LTD Internal Signals Q23715 transport delay [0 to 25] 8468, g8 1.8 s Sets the delay from a change in speed demand, until the measured flowrate changes. This could occur when the belt speed is constant, and the flowrate is controlled upstream of the weigh point introduc- ing a delay into the control loop.
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Page 40: Memory Storage
EMC INDUSTRIAL GROUP LTD Internal Signals flowrate flowrate at 100% speed Speed Demand 100% speed at zero flowrate Q23744 weight feed forward % 8496, g9 0.0 % Sets the percentage increase in speed demand if the hopper emptied completely. Q23745 weight feed forward limit 8498, g9 50 kg,t,g... -
Page 41: User Data
EMC INDUSTRIAL GROUP LTD Outputs Memory Recall/Store The following 3 settings are used to recall or store a group of settings and to set a name for each group. The groups are numbered from 0 to 19. Unless the memory usage is disabled, these settings will appear in the operator’s MENU, accessed by pressing the MENU key. -
Page 42: Analog Output 2 (Flowrate)
EMC INDUSTRIAL GROUP LTD Communications & Display Q2416 AO1 current (can override output signal) 8800, g10 Displays AO1 current. This setting may be altered to temporarily manually set the output current. This is useful to test the analog output. The output will return to normal after you exit from the settings. Q2417 AO1 signal (can override output signal) 8804... -
Page 43: Comms Port 2 - Rs485
EMC INDUSTRIAL GROUP LTD Communications & Display Q2512 COM1&2 modbus address [1 to 30] 8592, g12 modbus address. Q2513 COM1 stop bits 18052, g12 stop bits description automatic (1 stop on receive, 2 bits for send) 1 stop bit 2 stop bits Q2514 COM1 mode 18060, g12... -
Page 44: Printing & Macros
EMC INDUSTRIAL GROUP LTD Communications & Display Registers 2 Q25421 no function 8020, g12 Q25422 no function 8022, g12 Q25423 no function 8024, g12 Q25424 no function 8026, g12 Q25425 speedC 8028, g12 Q25426 ratioC 8030, g12 Q25427 setpointC 8032, g12 Q25428 control2 &... - Page 45 EMC INDUSTRIAL GROUP LTD Communications & Display Q25532 print total macro 1100, g13 This macro is run when PRINT TOTAL is activated. Q25533 print remote macro 1200, g13 This macro is run when a digital input with the function print, is activated. Q25534 print total remote macro 1300, g13...
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Page 46: Display (Md1,Md2,Mp1,Mp2)
EMC INDUSTRIAL GROUP LTD Communications & Display Q25559 at 10Hz macro 2900, g13 This is the macro runs continuously 10 times per second. These macros run at various points through the batching process. Key Macros These macros determine the behaviour of some of the opertor key functions. See also the ‘key macro options’... - Page 47 EMC INDUSTRIAL GROUP LTD Communications & Display transmitter currently in use, and optionally shows the time or current alarm number. Q25652 main line options 8668, g14 Controls the main display. Add up the numbers in the following table to change the display as described. Value Display Description...
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Page 48: 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 49: Info, Resets & Final Cal
These settings can only be viewed, and show important features of the transmitter. Q2611 system name 8844 Weight Change 1 Displays the name of the product. This is usually displayed on the top line of a ModWeigh display. It is created by the system name macro. Q2612 product serial number 8852... -
Page 50: Setup - Display
EMC INDUSTRIAL GROUP LTD Basic Settings Press the 1 key followed by ENTER to start the tuning. Press and hold the BACK key to return to normal operation. The tuning progress is displayed on a bar graph. If the tuning was unsuccessful, an alarm is raised at completion. SETUP –... -
Page 51: Display
EMC INDUSTRIAL GROUP LTD Information & Resets Q92524 COM2 mode 8838 COM2 mode description auto : use mwbus – automatic fall back to modbus slave modbus : use standard modbus Q92520 COM2 error count 8812 Display Display settings Q925692 disable touch 8514 Q925693 disable beeper... -
Page 52: Other Display Settings
EMC INDUSTRIAL GROUP LTD Other display settings Other display settings language select 8618 Selects the language to use for the display. To change the language in the identification line of the display (top line), reset the ‘system name de- sign’. When at this setting, press Fn 1 to reset. (Q25541). When a non-English language is selected, pressing the language key will toggle between the language and English. - Page 53 EMC INDUSTRIAL GROUP LTD I/O Function Table Output Functions pulse output‡ IO FUNCTION BITS In most cases, IO Function bits are set and reset by the controller or the digital input signals. 50 * MODBUS The registers control1, control2, control3, status1, status2, status3, IOx, faults, 53 * control4 and IOx2 can all be read over modbus.
- Page 54 EMC INDUSTRIAL GROUP LTD I/O Function Table Output Functions Faults/Alarms weight fault The Faults register holds the fault status of the unit. Faults are conditions that are either present or not. The source of the fault must be flowrate fault removed to clear the fault.
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Page 55: Operating Details
›=0 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 56: Operation
EMC INDUSTRIAL GROUP LTD Display Address Data description 1000 to 4999 Macro strings (contains printouts and programs) 8000 to 8029 Interface registers (PLC access) 8030 to 8699 Configuration settings (full instrument calibration) 8700 to 8899 Data outputs (values produced by the instrument) 8900 to 8999 Activations (when set, a process is activated e.g. -
Page 57: Keys
EMC INDUSTRIAL GROUP LTD Keys Secondary display shows one of a selection of values. Press the key to scroll through the list. Shows functions of soft keys A to E. Keys operator menu Press the OK (tick) key to reach the operator menu. See the Operator Menu section below for details. alarm menu Press the ALARM key to reach the alarm menu. -
Page 58: Actions
EMC INDUSTRIAL GROUP LTD Keys Icon Description The setting is locked. Password must be entered to edit. The setting can only be viewed. The setting has been changed from the default. The setting is being edited. Use numbered keys to change setting value. Use UP &... - Page 59 EMC INDUSTRIAL GROUP LTD Keys Press the ALARM key to see the alarm menu and acknowledge the alarms. The menu shows a list of the previous alarms. For details on an alarm in the list, use the UP, DOWN and ENTER keys, or key in the number next to the alarm.
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