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Epoch WT-PP User Manual

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Weight Transmitter User manual
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:
EPOCH INSTRUMENTS AND CONTROLS PVT LTD
No. 16, Bhadrappa Estate, 54, Magadi Main Road, Kamakshipalya,
Bangalore - 560 079.
Ph : 080-23481364
Email :
sales@epochloadcell.com
Contacts us : email :
sales@epochloadcell.com
, Ph: 080-23481364

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Summary of Contents for Epoch WT-PP

  • Page 1 Weight Transmitter User manual Contact us EPOCH INSTRUMENTS AND CONTROLS PVT LTD No. 16, Bhadrappa Estate, 54, Magadi Main Road, Kamakshipalya, Bangalore - 560 079. Ph : 080-23481364 Email : sales@epochloadcell.com Contacts us : email : sales@epochloadcell.com , Ph: 080-23481364...

  • Page 2: Initial Inspection

    WEIGHT TRANSMITTER USER MANUAL VERSION-1.3 Initial Inspection Ensure the following while opening the carton box: a) Weight Transmitter – 1No b) Connectors for ports (RS485, load cell) – 2Nos c) Side clamps – 2Nos d) User Manual – 1No Indicator Front Panel View The front panel of Weighing Transmitter appears similar to one shown below: 1 - LED Display 2 - MENU/ESC key - To enter into Menu from display(Password protected) &...
  • Page 3 Technical Specification Specification Description Indicator Power Power Supply 24V DC Supply Controller High speed microcontroller A/D Converter Type 24-bit Delta Sigma Analogue Input Range 0.2mV to 25 mv Linearity <0.02% FS Gain Drifting 2PPM/◦C Conversion Rate 12.5 SPS Display Accuracy 1/30,000 Display &...
  • Page 4 Menu Flow Diagram  Menu can be accessed by using the MENU key by pressing the key continuously for 2 sec.  Calibration accesses through hardware lock protection. Please connect and short pin no. 2 and 3 in rear panel to enable calibration. ...

  • Page 5: Load Calibration

    LOAD CALIBRATION  Calibration accesses through hardware lock protection. Please short pin no. 7 and 8 in rear panel to enable calibration . Accessing menus requires entering the default factory set valid 3-digit password i.e. ‘000’. It is suggested that you change the password. ...
  • Page 6  Navigate to Resolution (rSoL) and press rSoL ENTER/TARE.  Set the resolution value with the possible values (1, 2, 5, 10, 20, 50 and 100). E.g., ‘2’.  Navigate to Cal. Zero (CAL-0) and press ENTER/TARE. CAL-0  Remove any load on load cell. LED displays ADC counts corresponding to the cal.

  • Page 7: Analog Setup

    ANALOG SETUP This menu will help you to calibrate Analog output.To access Analog setup menu, navigate to menu using up key and select A-Set and press ENTER/TARE. S.No. Instruction Display  Navigate to Analog output check (A-CHC) and press ENTER/TARE. A-CHC ...
  • Page 8  Navigate to Analog Default Value (A-dEF) and press ENTER/TARE.  This provides safety to Analog Output during error conditions. The user can select what value of Analog Output should be during error A-dEF conditions. The available modes are,  Low Value (4 mA / 0 mA) ->...
  • Page 9 SETUP To access General setup menu, navigate to menu ->SETUP and press ENTER/TARE. S.No Instruction Display  Navigate to ADC Filter (adc-f) and press Adc-f ENTER/TARE.  User can enter the filter value here with range of (1-9). It is used to reduce fluctuations due to sudden load impacts.

  • Page 10: Communication Setup

    COMMUNICATION SETUP To access Serial communication setup menu, navigate to menu ->S-Conand press ENTER/TARE. S.No. Instruction Display  Navigate to Device ID (d-Id) and press ENTER/TARE. d-Id Enter the Device ID (1-99). It is required to identify the system, in case of multiple systems are deployed. ...
  • Page 11 SYSTEM CHECK (TEST) To access System check menu, navigate to menu -> tESt and press ENTER/TARE. S.No. Instruction Display  Navigate toRaw ADC (r-AdC) and press ENTER/TARE. r-AdC  Raw ADC counts corresponding to load cell is displayed. 1716  Navigate to Restore Calibration (rECAL) and press ENTER/TARE.

  • Page 12: Serial Communication Protocol

    Serial Communication Protocol The communication protocols used are a) Request mode b) Dump mode c) Modbus RTU mode d) Modbus ASCII mode Modbus RTU mode implemented and tested with Simply modbus Software, Note: Modscan32,Modbus tester. Communication settings: Parity : None ; Data Bits: 8 ; Stop Bits: 1 ; Flow Control: None Baud rate is settable under setup.
  • Page 13 Modbus ASCII Mode:  If the Communication mode (C-nod), under setup is “n-ASC” then the below protocol will receive based on request. All the parameters in the protocols should be in hex format.  The Modbus ASCII mode having the same address of Modbus RTU. FOR READ OPERATION: For ASCII mode read operation protocol, the example format is given below, Request: Eg - Request for Maximum Capacity: 010300030001F8...
  • Page 14 S.NO ADDRESSES PARAMETER FUNCTION RAW ADC (LSB OF ADC) R RAW ADC (MSB OF ADC) R PEAK VALUE (LSB OF PEAK VALUE) R PEAK VALUE (MSB OF PEAK VALUE) R STATUS TARE-CURRENT R-W(WRITE ‘0’TO TARE THE WEIGHT WEIGHT ) CURRENT WEIGHT (LSB OF CURRENT WEIGHT) R...
  • Page 15 DEVICE ID BAUD RATE COM MODE OFFSET (LSB OF OFFSET) R OFFSET (MSB OF OFFSET) R FOR READ OPERATION: Request: Example - Request for Resolution is 01 03 9C 41 00 01 D5CA Read No. of Device Id Address Command Registers 1 Byte 1 Byte...

  • Page 16: Troubleshooting

    Troubleshooting S. No Problem Reason Solution No Display Power line to the control unit Check the power cable might be faulty. continuity. Weight 24 DC. Voltage fluctuations. Check the Line Input Voltage. fluctuations Improper earth. Check the earth cable or earth.
  • Page 17 Error Messages Error Description S.No. Code If the value of current weight or displacement exceeds the -oC- [Maximum load capacity or Maximum displacement value + (9 * resolution)], then “OC” is displayed. If the value of load cell exceeds its range or if the load cell disconnected, “or”...

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