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Summary of Contents for General Measure Checkweigher
- Page 1 Checkweigher U s e r ’s M a n u a l...
- Page 2 ©2013，Shenzhen General Measure Technology Co., Ltd reserve all copyright. Without permission from Shenzhen General Measure Technology Co., Ltd，Any corporations or person must not copy, spread, record or translate into other language by any forms. Our company reserved the right to update user’s manual without additional notice to make perfect for customers.
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Page 3: Table Of Contents
Contents 1 About this manual ....................1 Safe-keeping .................... 1 Target group ..................... 1 Symbols used ................... 1 Warning notices ..................1 2 Introduction ......................3 Structure ....................3 Specifications ................... 3 Intended use ..................... 4 Operating conditions ................4 Warranty .................... -
Page 4: About This Manual
Checkweigher user’s manual 1 About this manual Read the user manual before connecting and switching on the device. You will find information on how to get maximum performance from the device as well as how to avoid possible hazards. This manual explains how to operate and set the device. - Page 5 Checkweigher user’s manual Source of danger, improper use! Cause damage to property.
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Page 6: Introduction
Checkweigher user’s manual 2 Introduction Structure The checkweigher is available in different structure, an example is shown in the figure. Alarm lamp ○, Wind shield ○, Weighing belt ○, Input belt ○, Electric control cabinet ○, Foot screws ○, Output belt ○,... -
Page 7: Intended Use
Checkweigher user’s manual Weighing belt width(mm) Weighing belt hight(mm) 750±30 180-260V(AC), Power 50-60Hz 350VA Protection IP54 *The precision depend on the items checked and the field condition, the precision here is the best precision the checkweigher can achieve. Intended use - The device can be used for checking the weight of packaged foodstuffs or goods. -
Page 8: Warranty
Checkweigher user’s manual Please contact us or our competent customer service points if you have any doubts concerning the practical application of these conditions. Warranty We do not accept any liability for damages resulting from: - Non-compliance with our operating conditions and user’s manual. -
Page 9: Safety Instructions
Checkweigher user’s manual 3 Safety instructions Trained Operator The device must be operated by people who have been instructed in the operating procedure. The operator must read and understand the safety instructions in this manual. Even though the device is equipped with all the required safety installations, injuries to the operating personnel or damage to property is possible if the safety instructions are not heeded. -
Page 10: Rotating Parts
Checkweigher user’s manual 3.3.1.1 Conveyor belts Do not place any objects on the transport belts and do not use the transport belts as a storage facility. 3.3.1.1 Rejector Once the device is switched on, do not grab items in the rejector working area. -
Page 11: Installation
Checkweigher user’s manual 4 Installation The initial installation and commissioning as well as instruction in the operation, cleaning, care and maintenance will be carried out by the responsible General Measure Service Agent or the General Measure specialist adviser. -
Page 12: Human Machine Interface
5 Human machine interface HMI with Touch Screen gives friendly access to information interaction between user and checkweigher. The most frequently used interface of this device is the main interface. Press key on main interface can enter sub interfaces. The sub interfaces share same structure. - Page 13 Checkweigher user’s manual <Setup> Entrance of product management and system maintenance. Set current weight to zero. <Zero> Start the weight checking process. <Start> <Zero> Stop the weight checking process. <Stop> Link to change current user. <User> Link to weighing information.
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Page 14: Sub Interface
Checkweigher user’s manual Sub interface The sub-interfaces have same structure but with different function. The different function will be introduced later. Name of sub-interface ○, Information and functional key area of sub-interface ○, In addition to the keys present in main interface, there are some other keys in sub interface: <Next>... -
Page 15: Instruction Of Operation
Start Data Stop Fig 6-1 Operation procedure of Checkweigher In above operation procedure flow chart, “Product parameter” should be added before any new product needed to be checked. “Calibration” should be carried out when the device is installed the first time. -
Page 16: Switch Off Device
Checkweigher user’s manual Turn the main switch in a clockwise direction. The main interface appears after a few seconds. The default user level is no log. Wait 20 minutes before weight checking. Aims to ensure system reach the correct operating temperature. -
Page 17: Logon And Logoff
Press <OK> to confirm entered data or press <Cancel> to cancel and exit Logon and logoff Checkweigher has four user levels, the default level is no log, which can only start the device to check one kind of product whose parameter has been set correctly and selected. -
Page 18: Product Select
Checkweigher user’s manual Fig 6-4 Log on dialog box Select account. See Fig 6-4. Input the password. Initial password of operator and technician are 000000. Press <OK>. It comes to main interface with technician level authorization. For the first time, please change the password yourself and keep it appropriately. -
Page 19: Alarm Clear
Checkweigher user’s manual Logon with operator account. Press <Product > in main interface. Enter product select interface, as Fig 6-6. Fig 6-6 Product select interface Select the product to be checked according to its name. Press <OK>. Go back to main interface. - Page 20 Checkweigher user’s manual Fig 6-8. Fig 6-8 Statistic data interface This information of each product is recorded separately and it will be reset if related product parameter is modified. If starting a new batch checking procedure without changing product parameter, user needs to clear previous statistic information of batch manually in ‘statistic data interface’;...
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Page 21: Setup
Checkweigher user’s manual Fig 6-10 Configuration window Press <config>. Configuration window appear, you can choose special time range to show check result. The data can be exported through usb port. Insert flash disk. Press <Export>. Export weighing data to flash disk. The data can be viewed and manipulated in computer through Excel. - Page 22 Checkweigher user’s manual Fig 6-11 setup interface Weight checking process should be stopped when entering setup interface. Press <PD magage>. Enter PD manage interface, as Fig 6-12. Fig 6-12 PD manage interface Press<New> in PD manage interface. Enter first page of product parameter interface, Fig 6-13.
- Page 23 Checkweigher user’s manual Product name. “Nominal weight” Weight of the product expected to be. “Upper deviation” When the weighing result > nominal weight + upper deviation, the checking result is over. “Lower deviation” When the weighing result < nominal weight – lower deviation, the checking result is under.
- Page 24 Checkweigher user’s manual Fig 6-15 Rejector parameter interface Set the parameters correctly. The following product parameters can be set: “Over reject distance”, “Over reject time” Over reject distance is the distance between the end of weighing platform and the centre of over rejector.
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Page 25: Basic Maintenance
Fig 6-16 Dynamic study interface Finished dynamic study procedure, it will come to result interface automatically. In this interface, you can confirm the accuracy of the checkweigher for this product, if the result is obvious wrong, conduct dynamic study procedure again. - Page 26 The device has been switched on for at least 20 minutes. Calibration is essential for weighing system. In order to guarantee the weight output by checkweigher is right, it must be conducted after the device installed first time. Calibration establishes the relationship between loadcell output signal with the product mass on the platform.
- Page 27 Checkweigher user’s manual Activate the output port by press in the blank, the output port will output signal. Fig 6-20 IO test 6.2.2.3 Communication Press <Communication> in maintenance interface Enter communication interface, as Fig 6-21. Fig 6-21 Communication interface The parameters in this interface are as follow: “Slave station”...
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Page 28: Advanced Maintenance
Checkweigher user’s manual STX: Start byte, 02H State 1: 20H State 2: 20H State 3: 20H Mark: 1 byte When a new value sampled, this byte adds 1, this byte cycles from 31H to 39H. It is assistant for sampling values. - Page 29 Set the parameters correctly. The following system parameters can be set. “WP length” Length of the weighing platform, it is the distance between two rollers. “Capacity” Maximum capacity of checkweigher. “Interval” Minimum interval of checkweigher. “AZ level” Filtering level for automatic zero operation.
- Page 30 “Rejector” If the checkweigher need to use rejector, choose ‘yes’ and there will be rejector parameter (product parameter 3) in Product parameter. If it needn’t to use rejector, choose ‘no’ and the rejector parameter will not appear in product parameter.
- Page 31 Checkweigher user’s manual want to save these parameters as the default parameter for the checkweigher, you can use the <savebest> key. So in this situation, if there are something wrong and not easy to make sure whether there are incorrect parameter, press the <Rebest> key, the parameter will come back to the value you save last time.
- Page 32 Checkweigher user’s manual 6.2.3.3 Velocity calibration Press <Velocity calib> in advanced maintenance interface. Enter velocity calibration interface, as Fig 6-27. Fig 6-27 Velocity calibration interface According to the belt speed range, determine three point speed and line velocity, input the three speeds sequentially in the input box under input motor, measure the corresponding line velocity, and record the speed and line velocity in the right.
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Page 33: Communication Protocol And Parameter
Checkweigher user’s manual 7 Communication protocol and parameter The device can communicate by RS232/RS485 selectable serial port and support Modbus communication protocol. Initial setting is RS232 serial port. Communication protocol address as follows: Function Description address 4 bytes read-write 0100... - Page 34 Checkweigher user’s manual 0686 Standard deviation …… reversed Read-only bit（Function code 0x01，23 bits per time at most） 0000 Stable-determination (Stable:1, Unstable: 0) 0001 Symbol (negative: 1, positive: 0) 0002 Overflow (overflow: 1, normal: 0) 0004 alarm (yes: 1, no: 0)
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Page 35: Maintenance
8 Maintenance Cleaning Disconnect the power supply before cleaning the checkweigher. When cleaning the checkweigher working site, the checkweigher must be covered. The following are not permitted for cleaning: - Sharp, hard, or pointed objects - Water or steam jet devices... -
Page 36: Troubleshooting
Current weight exceed Alarm clear, current weight cannot be Overload range of checkweigher weighed. Alarm clear, the checkweigher can weigh one product per time, so the next The distance between product can only enter the weigh two products is too... - Page 37 （1）Check whether the device has been started, if not, start it. （2）Check whether the light source and light barrier align, if not, the device cannot start work. Realign the light source and light barrier. （3） Check whether product parameters are correctly set. If not, the checkweigher cannot work normally.
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