KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen E-Mail: info@kern-sohn.com Phone: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com Operating manual Electronic Crane Scales Logbook Regular maintenance and care KERN HFT Version 1.
GB KERN HFT Version 1.0 11/2013 Operating instructions / logbook Electronic Crane Scales Contents 1 Technical data _________________________________________________ 4 1.1 Dimensions balance (mm) ___________________________________________________________ 5 1.2 Dimensions display unit (mm) ________________________________________________________ 6 2 General Safety Instructions ______________________________________ 7 2.
5.1 Safety instructions _________________________________________________________________ 18 5.2 Loading the crane scales ___________________________________________________________ 19 5.3 Turn on/off _______________________________________________________________________ 22 5.4 Set balance to zero ________________________________________________________________ 22 5.5 Taring ___________________________________________________________________________ 23 5.
1 Technical data KERN HFT 3T0.5 HFT 5T1 HFT 10T2 HFT 15T5 0.5 kg 1 kg 2 kg 5 kg Weighing range (max) 3 000 kg 5 000 kg 10 000 kg 15 000 kg Taring range (subtractive) 3 000 kg 5 000 kg 10 000 kg 15 000 kg Reproducibility 500 g 1 kg 2 kg 5 kg Linearity ± 1 kg ± 2 kg ± 4 kg ± 10 kg 3 t (M3) 5 t (M3) 10 t (M3) 15 t (M3) Readability (d) Recommended adjustment weight, not added (class) Stabilization time 2s Precision Warm-up time Unit 0.2 % of max.
1.1 Dimensions balance (mm) HFT-BA-e-1310 Model A B C D E HFT 3T0.
1.2 6 Model a b c d e f g HFT 3T0.5 16 42.9 19.1 27.5 28 16 31 HFT 5T1 22.4 57.9 25.4 40 45 31 51 HFT 10T2 31.8 82.6 35.1 51 57 30 62 HFT 15T5 38.1 98.6 41.
2 General Safety Instructions 2.1 Duties of the owner-operator Follow national accident prevention regulations and all operator health and safety at work and operating regulations. • Observe all safety regulations of the crane manufacturer. • The balance may only be used for the proposed purpose. Any type of use which is not specified in these operating instructions, will be considered as improper use.
2.4 Environmental conditions • Never operate the crane scales in explosive environment. The serial version is not explosion protected. • Operate the crane scales only under environmental conditions as specified in these operating instructions (especially in chapter 1 „Technical data“). • Do not expose the crane scales to strong humidity. Non-permitted condensation (condensation of air humidity on the appliance) may occur if a cold appliance is taken to a considerably warmer environment.
2.7 Warranty Warranty claims shall be voided in case • • • • • • • Our conditions in the operation manual are ignored The appliance is used outside the described uses The appliance is modified or opened Mechanical damage and damage caused by media, liquids, Natural wear and tear The appliance is improperly set up or incorrectly electrically connected The measuring system is overloaded 2.
3 The crane scales at a glance The crane scales are a multi-purpose and cost-saving solution for overhead weighing applications such as e.g. recycling, metal processing, machine engineering, transport and logistics. 3.
3.2 Appliance overview display unit Front view display unit (receiver): 1. Antenna 2. Battery charge status 3. Weight display 4. Keyboard Back view display unit (receiver): 5. RS-232 6. Mains adapter connection 7.
3.
3.4 Keyboard overview Button Navigation Navigation Navigation Navigation button HFT-BA-e-1310 Function • Turn on/off • With a weight value >10% Max. the button function is Taring • With a weight value <10% Max.
3.5 Numerical input via the navigation buttons Button Navigation Function Increase flashing digit Digit selection to the left Delete Digit selection to the right Confirm 3.6 Label Do not stand or go under suspended loads. Do not use on building site. Keep an eye on suspended loads. Do not exceed nominal load of crane scales. (example) The product conforms to the requirements of the German Equipment and Product Safety Act.
4 Commissioning Attention: Always observe chapter 2 „General Safety Instructions“! 4.1 Unpacking Once delivered and unpacked, crane scales will not be taken back. The crane scales have been sealed by Messrs. KERN. SAFETY Shackles and hooks are sealed by Sella tape. INSTRUCTIONS The packaging is also sealed by adhesive tape. for protection against + break Broken seal obliges to purchase. Thanks for your comprehension.
4.3 Rechargeable battery operation Crane scales: CAUTION Material damage on crane scales Only use the delivered mains adapter. Make sure that the mains adapter, the cable and the mains plug are in a perfect condition. Do not use the crane scales during the loading process.
4.4 Suspending the balance Condition The crane needs a safety bracket (1) that the unloaded crane scales cannot fall down. If the safety bracket is missing or damaged, please contact the crane manufacturer in order to receive a hook with this safety equipment. Suspend the crane scales on the lower hook of a crane and close the safety bracket. The crane scale’s upper eyelet should rest in the saddle (2).
5 Operation 5.1 Safety instructions Risk of injury due to falling loads! Danger Take great care when operating the crane and follow the general rules for crane operation. Check all parts (hook, eyelet, rings, rope slings, cables, chains etc.) for excessive wear or damage If faults can be seen on the safety bracket of the hook or if it is missing completely, the scales must not be used Work only with appropriate speed Always avoid vibrations and horizontal forces.
5.2 Loading the crane scales For good weighing results observe the following, illustrations see next page: Only use load attachment devices which guarantee a one-spot suspension and where the scales can be suspended freely. Do not use too large load attachment devices which do not guarantee any onespot suspension. Do not use multiple suspensions. Do not pull or push the load or the loaded balance. Do not pull the hook horizontally. Loading the balance 1.
Only use load attachment devices which guarantee a one-point suspension and where the scales can be suspended freely. Do not use too large load attachment devices which cannot guarantee a one-point suspension.
Do not push or pull Do not pull the hook horizontally Do not use multiple suspensions HFT-BA-e-1310 21
5.3 Turn on/off Start-up Press on the display unit; the unit will carry out a self-test. As soon as the weight display appears, the instrument will be ready to weigh. At the crane scales put the ON/OFF switch to „ON“ If „Err 10“ appears in the weight display no radio communication with the balance could be established. Either the crane scale is not yet switched on or the rechargeable battery has not been sufficiently loaded.
5.5 Taring Suspend preload. Press the -button and wait until the zero display appears. The weight of the container is now internally saved. Weigh the material, the net weight will be indicated. After removing the preload weight appears as negative display. To delete the tare value, remove load from crane scales and press the button. 5.6 Weighing Loading the crane scales. Wait for stability display STABLE. Read weighing result.
5.7 Fix the weight value (Data-HOLD function) Suspend the material to be weighed Press the button, the fixed weighing value will be displayed. The indicator HOLD appears. The weighing value will be held in the display until it is deleted by 5.8 . Weighing Units 1. How to enable weighing units Switch on the balance and during selftest press Press , , Acknowledge with Press 24 , „Pn“ will be displayed. subsequently. . The first function „F0 di“ is displayed.
Press , the current setting will be displayed. To enable [on] / disable [off] the displayed weighing unit, press Acknowledge with , the active setting of the next weighing unit will be displayed. To enable [off] / disable [on] the displayed weighing unit, press Press . , balance returns to menu Return to weighing mode using 2. How to change weighing units To return to the previously enabled weighing units go to weighing mode by .
5.9 Totalization With this function the individual weighing values are added into the summation memory by pressing and edited, when an optional printer is connected. Prerequisite: Totalizing function „F11 ACC“ on setting „on“, see chap. 6.2. • With active totalizing function the indicator „M+“ is displayed • The totalizing function is not active when the weight is under 20d. • Totalizing is only possible in weighing mode. • The data output depends on the menu setting „F7 Prt“.
Remove the weighed good. More weighed goods can only be added when the display ≤ zero. Suspend the item to be weighed B. Wait until the stability display appears, then press . Weighing value will be added to summation memory and possibly printed. The number of weighing actions „n002“, followed by the total weight will be displayed for 2 sec. After that the current weighing value is displayed. Printout example YKB-01N (menu setting „F7 PrtPrt 5“): No. N : C 2 100.0KG 200.
Display the summation memory: If you see a display of zero , press and the number of weighings, followed by the total weight will be shown for 2 sec and printed if an optional printer is connected. Printout example YKB-01N (menu setting „F7 PrtPrt 5“): NO. C 28 2 200.
Delete total added memory: When zero is displayed press , the number of weighings followed by the total weight will be displayed for 2 sec. During this display press again. The data in the summation memory are deleted, the indicator „M+“ extinguishes. 5.10 Automatische Nullpunktkorrektur Under this menu item the automatic zero point correction can be switched on or off. In enabled status the zero point will be corrected automatically, selectable 0.5d – 4 d (see chap.6.
6 Menu 6.1 Navigation in the menu: Call function Switch on the balance and during selftest press , „Pn“ will be displayed. Press , , subsequently. Acknowledge with . The first function „F0 di“ is displayed. With help of , the individual functions can be selected one after the other. Select function Select setting Confirm selected function by . The current setting will be displayed.
Menu overview Function How to change readability Available settings High * Description Low d (low) d (high) cap Automatic zero point correction (zero tracking) Capacity 3t 10kg 5kg 2kg 2kg 1kg 500g 5t 10kg 5kg 2kg 2kg 1kg 500g 10 t 20kg 10kg 5kg 5kg 2kg 1kg 15 t 50kg 20kg 10kg 10kg 5kg 2kg AZ 0.5d 0.5 d AZ 1d* 1d AZ 2d 2d AZ 4d 4d Modifications may only be carried out by a specialist with competent knowledge. 6.
Cont* Continuous data output printout examples see chap. 8.4 Prt 1 Not documented Prt 2 Not documented Prt 3 Not documented Prt 4 Data output format 4, Printout example see chap. 8.4 Prt 5 Data output format 5, Printout example see chap. 8.4 Interface parameters Adjustment see chap.
7 Adjustment As the acceleration value due to gravity is not the same at every location on earth, each balance must be coordinated - in compliance with the underlying physical weighing principle - to the existing acceleration due to gravity at its place of location (only if the balance has not already been adjusted to the location in the factory). This adjustment process must be carried out for the first commissioning, after each change of location as well as in case of fluctuating environment temperature.
Confirm by , „LoAd“ will be shown. Attach the adjustment weight and wait until the symbol „STABLE“ lights up. Press button After successful adjustment the balance carries out a selftest, then it automatically returns to weighing mode. An adjusting error or incorrect adjusting weight will be indicated by the error message; repeat adjustment procedure.
8 Data output RS 232 You can print weighing data via the RS 232C interface by pressing via the interface according to the setting in the menu. This data exchange is asynchronous using ASCII - Code. The following conditions must be met to provide successful communication between the weighing balance and the printer. Use a suitable cable to connect the display unit to the interface of the printer. Faultless operation requires an adequate KERN interface cable.
8.4 Printer mode Printout examples printer KERN YKB-01N: Menu setting „F7 PrtCont“: St, GS, + 100 kg Menu setting „F7 PrtPrt 4“: 1.weighing N : 100 2.weighing N : 100 Menu setting „F7 PrtPrt 5“: 1.weighing 2.weighing No. 1 No. 2 G 100KG G 100KG C 100KG C 200KG GS N No. C Gross weight Net weight Number weighing processes Total of all individual weighings ST Stable weighing values 36 Total No. C 2 200KG Total No.
9 Error messages Error message Description Possible causes --ol- Maximum load exceeded Reduce load Check whether the balance has Zeroing range exceeded due to switching-on balance or been damaged Load attached Overload during setting to zero Err 4 Err 5 Err 6 Err 10 Lo bA pressing (normally 4% max) Keyboard error Improper operation of the balance Value outside the A/D changer Damaged weighing cell range Damaged electronics Distance emitter / receiver too long No signal Emitter
10 Cleaning, Maintenance and Disposal Risk of injury and risk of material damage! The crane scales are part of a hoisting device! For a safe operation please observe the following: Danger Have carried out a regular maintenance by trained specialized staff Carry out regular maintenance and care, see chapter 10.2 and 10.3 Have the parts exchanged only by trained specialized staff. If there arose discrepancies with the safety checklist, the balance must not more be put into operation.
10.2 Regular maintenance and care • The regular 3-month maintenance may only be carried out by an expert with competent knowledge of working with crane scales. Thereby the national regulations for prevention of accidents as well as the working, operation and safety regulations of the owner-operator. • To check the dimensions only use suitable test devices. • The regular 12-month maintenance must only be carried out by trained specialized staff (KERN customer service).
10.4 Checklist „Regular maintenance“, (see chapter 10.3) Original dimensions crane scales, serial no.: ………………………………… Capacity ……………………………… Shackle a (mm) Hooks b (mm) c (mm) Wear and tear Date ………………………………… Split pin&Nut d (mm) e (mm) f (mm) g (mm) Angle α (°) Wear and tear Safety bracket Tester ……………………………………… *These data can be found in the document attached to the balance. Please keep this document always available. Shackle a Max.
Shackle Hooks a b c Wear and tear (see grey fields) Split pin& Nut 5% 0% 5% No deformation or cracks tight Max.
HFT-BA-e-1310 42
11 Enclosure 11.1 Checklist „Enhanced maintenance“ (General revision) The enhanced maintenance has to be carried out by a service partner authorized by KERN. Crane scales Interval Model ………………………………….. Serial no. ……………………………………………..
11.2 List „spare parts and repair of safety-relevant parts“ Repair has to be carried out by a service partner authorized by KERN. Crane scales Model ………………………………….. Serial no. ……………………………………………..
Crane scales Model ………………………………….. Serial no. ……………………………………………..
