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 Installation Instructions U-shaped weighing bridge KERN KFU Version 1.
GB KERN KFU Version 1.1 05/2012 Installation instructions U-shaped Weighing bridge Contents 1. 2 3 Technical data ................................................................................................ 3 Appliance overview ....................................................................................... 4 Basic Information (General) .......................................................................... 5 3.1 3.2 3.3 3.4 3.5 Documentation ..............................................
1. Technical data Model Weighing range Max kg Readability d g Verification value e g Minimum load Min kg Preload additive kg Cable length approx. m Net weight approx.
2 Appliance overview There are two versions of the U-weighing bridge, painted steel ( _V20) and stainless steel ( _V30).
3 Basic Information (General) 3.1 Documentation This installation instructions contain all data about placement and commissioning of the U-weighing bridges KERN KFU. In combination with a display unit, in the following named weighing system, operation and configuration can be seen in the manual of the display unit. 3.2 Proper use The KERN KFU is designed for weighing Euro-pallets and containers with the dimensions of Euro-pallets. It is provided for use as „non-automatic balance“.
3.5 Monitoring of Test Resources In the framework of quality assurance the measuring-related properties of the weighing system and, if applicable, the testing weight, must be checked regularly. The responsible user must define a suitable interval as well as type and scope of this test. Information is available on KERN’s home page (www.kern-sohn.com with regard to the monitoring of balance test substances and the test weights required for the weighing system.
6 Unpacking, Setup and Commissioning 6.1 Installation Site, Location of Use The U-weighing bridges are designed in a way that reliable weighing results are achieved in common conditions of use. You will work accurately and fast, if you select the right location for your weighing system.
6.2 Unpacking and placement CAUTION The weighing system is quite heavy. Always use an according lifting device to lift it out of the packaging or to transport it to the required placement site Danger for the back! Unpacking: Remove the outer packaging. Lift the weighing system off the packaging material, see note of caution. Secure the weighing system that it cannot fall down when it is lifted. Make sure that the contents of the packaging is complete.
7 Operation Information about • • • • Mains connection Mains is connected via the connection cable of the display unit. Initial Commissioning Connection of peripheral devices Adjustment, linearization and verification Only the complete balance can be verified, that means the U-weighing bridge in connection with an appropriate display unit. You will find the accurate operation in the operating instructions which are included in the scope of delivery. 7.
• Avoid falling load, shock loads and impacts from the side. • The forks of the fork lift truck may not touch the pallet or the balance during weighing process. • Do not move the balance at any moment, when it is loaded. 7.2 Load/unload the weighing system Place the load on the scales using a pallet lifting truck, a crane or a forklift truck. Ensure that the load is not swinging when it is placed onto the scales.
8 Service, maintenance, disposal Before any maintenance, cleaning and repair works, separate the device from mains voltage. 8.1 Daily checks Ensure that all the four feet touch the floor. Ensure that the connection cable to the display unit and the mains connection cable of the display unit are not damaged. Make sure that the balance is free of dirt, especially under the edges of the balance. 8.2 Cleaning ! ! ! Remove regularly corrosive substances. Keep IP protection.
8.5 Instant help In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning. Help: Fault The displayed weight is permanently changing Possible cause • Draught/air movement • Sites with vibration. • Weighing plate has contact with other objects.
9 Service documentation • • • 9.1 This chapter is only provided for a specialist of balances ! The weighing bridges are carried out in DMS sensor technology, at every corner there is a DMS weighing cell. The analogue-digital conversion takes place in the display unit. There are also saved all balance and country specific data.
9.2 Checking and adjustment of the corner load Checking the corner load • Put pallet • Put test weights in the centre on the pallet and tare. • The balance displays -0-. • Place the test weights subsequently at all four corners, observe order 1, 2, 3, 4. Now the divergences are displayed with sign, write down the values. If there are divergences beyond the tolerances (see chap. 9.1), an adjustment will be necessary.
Adjustment at the analogue print Adjustment of weighing cell J2 takes place at the potentiometer VR1 and VR2. Adjustment of weighing cell J3 takes place at the potentiometer VR3 and VR4. Adjustment of weighing cell J4 takes place at the potentiometer VR5 and VR6. Adjustment of weighing cell J5 takes place at the potentiometer VR7 and VR8. Increase the value turning to the right, reduce the value turning to the left.
10 Preload / Deadload settings Platform type Platform dimension (mm) Load cell Type TC Class No. Max Emax Emin Preload -1 -4 (kg) (kg) (g) Y n -3 Deadload (kg) Tmin Tmax Z Cable- -5 -6 or length DR (m) Painted steel KFU 600V20M 840 x 1190 H8C D09-03.19 C3 0 500kg 0 10000 3000 33kg -10 40 3000 5 KFU 1500V20M 840 x 1190 SQB TC6911 C3 0 1000kg 0 10000 3000 33kg -10 40 3000 5 Stainlees steel KFU 600V30M 840 x 1190 H8C D09-03.
