USER’S MANUAL Bench scale CWP
USER’S MANUAL CWP. Bench scale CONTENTS 1. Main data 3 2. Main features 3 3. Structure 4 4. Operation keys instruction 6 5. Digit input 7 6. RS-232 output and printing 7 7. Power-on operation 9 8. Two weighing modes switching 9 9. Basic weighing mode 9 10. Setup in check weighing mode 9 11. Display in check weighing mode 11 12. Backlight selecting 12 13. Auto rectifying 12 14. Storage battery maintaining 12 15. Use guide 13 16.
USER’S MANUAL CWP. Bench scale 1. MAIN DATA 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 Signal input range: 0mV ~ 8mV Zero point temperature drift ≤ 0.15μV/ºC Sensitivity temperature drift ≤ 10 ppm/ºC A/D conversion resolution ration: 500000 Display resolution ration: 30000 A/D conversion rate: 168T/S Display update rate: 10T/S Accuracy class: 3 Min. Display value: 1/ 2/ 5 available Non-linearity error: ≤ 0.01%F·S.
USER’S MANUAL CWP. Bench scale 3. STRUCTURE 3.1 Structure diagram Adjustable knob Indicator support Hole for suspending on wall (total 3 holes) Figure 1-a: Adjustable support Seal ring assembly Load cell input (7-core) PCB RS.
USER’S MANUAL 3.2 CWP. Bench scale Panel 1 2 3 > Auto Off lb kg pc Print = < 8 AC ~ NTG 9 Auto BL 4 Over Accept Under 0 5 6 7 % CHARGE BL C I/O POWER VII % VI MODE UNITS EXIT SET V IV 0 T ENTER III II I 1. LCD screen 2. Red indication light: check weighing mode, the light is on when WX ≥ WH 3. Green indicating light: check weighing mode, the light is on when WH > WX > WL 4.
USER’S MANUAL 3.4 CWP. Bench scale Electrical connection 3.4.1 Power supply is provide with standard adaptor. - + Figure 4-a: Power adaptor unit 3.4.2 Load cell input The load cell input socket installed on the back of the indicator. The wire connection description as follow: SHIELD 5 6 4 -SIG 3 +SIG 7 1 2 +EXC -EXC 1 2 3 4 5 + Excitation - Excitation +Signal - Signal Shield Figure 4-b: Connection 4. OPERATION KEYS INSTRUCTION 0 T ENTER I.
USER’S MANUAL % CWP. Bench scale VI. Printing and value difference key. 1. In check weighing mode, you can press this key to change the displayed content and make the display convert between value difference and normal value. While setting the high and low limit under check weighing state, you can select percentage setup mode via this key, and at the same time the triangle cursor of “%” indicating symbol will appear. 2. Under weighing state when F1.
USER’S MANUAL CWP. Bench scale 6.1.2 The serial data (ASCII code) is transmitted in continuous mode by MCS-51 way 1.
USER’S MANUAL CWP. Bench scale 6.2.2 Connection between the indicator and printer. If there is one cable provided together with the printer, connect one end of the cable to the printer interface and the other end to the 5-core metal socket of the indicator as following: Indicator Printer TXD 1 3 RXD S.GND 2 7 S.GND Figure 8 * Note: The printer will not print if the net weight is a negative value. The print number varies from 0~99. When it exceeds 99, it will back to 0 automatically. 7.
USER’S MANUAL 10.2 CWP. Bench scale Target weight input. BL Load the target weight on platform, press T (ENTER) or C (EXIT) to confirm after weighing stabilisation. While pressing T (ENTER), it means you still neet to go on to the next setup for the high and low limit value. At this time the indicator displays ( XXXXX refers to the high limit value in storage). While pressing C (EXIT), you can withdraw from setup state, at this time it returns to check weighing mode.
USER’S MANUAL CWP. Bench scale 11. DISPLAY IN CHECK WEIGHING MODE 11.1 Value difference display. “value difference display” means the indicator will display the value difference between the weight value of loaded goods and the target value. Meanwhile, while the goods weights is “0”, the indicator will display a negative value and its absolute value is the set target weight. Of course, when the weight of goods is equal to the target value, the indicator will display “0”.
USER’S MANUAL CWP. Bench scale 12. BACKLIGHT SELECTING The indicator is equipped with LED backlight function, which ensures the normal operation it in insufficient sunlight condition. For usage life of the storage battery, it has 2 modes. It is set in constant-off state under manual mode when it leaves our company. 12.1 AUTO Mode While auto mode is selected, “Auto BL” indicating cursor is on.
USER’S MANUAL CWP. Bench scale 14.4 If the working time is rather short than it is fully charged, you should consider to charge the storage battery. Opening the battery box cover, pulling up the positive and negative metal pieces and removing the storage battery. While changing the battery, be careful to make sure the electrocode of the storage battery is correct. 14.5 Battery switch (see figure 1-b): if you want to charge the battery or use with DC power, please turn on the battery.
USER’S MANUAL CWP. Bench scale 16.2.1. Subdirectorios y contenido en F1 F1.1: Unit selecting, with 4 options F1.1=1 only for choosing “kg” unit. F1.1=2 “kg” and “lb” unit choosing and converting, when turn-on, its unit is “kg” and can be calibrated only under “kg” unit. F1.1=3 “kg” and “lb” unit choosing and converting, when turn-on, its unit is “lb” and can be calibrated only under “lb” unit. F1.1=4 only for choosing “lb” unit. F1.2: Calibration mode selecting, with 3 options F1.
USER’S MANUAL CWP. Bench scale F2.3 Digital filtering coefficient selecting, with 3 options F2.3=1 low-degree filtering: suitable for the conditions with weak air flow or little atmospheric pressure charge. F2.3=2 medium-degree filtering: suitable for general occasion. F2.3=3 high-degree filtering: suitable for the situations with strong air flow or large atmospheric pressure change. F2.4 Extension display mode (i.e. Internal graduation number display), with 2 options F2.
USER’S MANUAL CWP. Bench scale For example: When the Min. display value selected is 1 and the Max. capacity selected is 60kg, the graduation number to be accepted is 6000, neither 600 nor 60000. And when the Min. display value and the Max. capacity you selected is separately 1 and 1000 kg, the graduation number to be accepted is 10000, neither 1000 nor 100000. 16.3.2 After you press T (ENTER) to confirm the Max.
USER’S MANUAL CWP. Bench scale Figure 12a Enter calibrating state, select main directory and subdirectory by I/0 = T ENTER BL C = 0 = C EXIT = Self-check T = I/O POWER 0 UNITS 0.00 I/0 C SET UP 0 C T F1 1 F1.2 1 0 C F2 T F2.1 C F3 T d------1 F1 F2 3 F2.1 5 F2.1 10 F1 C 4 F2.1 20 Figure 12c Exit from subdirectory to main directory by C 0.00 Self-check T T 1 F2.1 0 F1.1 2 I/0 1 F1.2 C SET UP T T F1.2 F1.
USER’S MANUAL CWP. Bench scale Figure 12d Calibrating flow chart I/0 = I/O POWER T = T ENTER BL C = = F3 C EXIT 0 = 0 UNITS F1 T d-----------1 C Select 1, 2 or 5 by T Inputting or selecting Max.
USER’S MANUAL CWP.