KERN KFB-TM Service Manual

Also see for KFB-TM: Operating and installation instructions Operating and installation instructions

Contents

KERN KFB-TM Service Manual Manual pdf 35 page image

- 35 - KFB-TM/KFN-TM-SH-e-1410Determine whether the problem is in the indicator or the platform Remove power from the system, and disconnect the indicator from the platform Connect the indicator to a load cell simulator Reapply power and test the indicator If problem goes away, its source is probably in the platform. Check the wiring,connecter, load cells and mechanical components of the platform.If problem persists, its source is probably in the indicator. Check the indicatorvoltages, connecters, cables and function programs.10.3 Check the Load cell Remove power from the system, and disconnect the indicator from the platform Remove the load connecter from platform terminal. Check the moisture, or foreign material inside. Make sure all leads are connected and correctly. See the details of connections in theInstallation section. Check load cell for proper input and output resistancesMeasuring Points Resistance+ Exc to –Exc (Input) Minimum 350 ohms+Sig to –Sig (Output) 347 ~ 353 ohms10.4 Check Indicator VoltagesIf the problem is in the Indicator, use a multimeter to check the following voltagesAC PowerCheck the AC power socket out put voltage. Voltage must be a -20% and +10% of the normal AC voltage.Adaptor VoltageCheck the adaptor output cable connecter voltage Voltage must be minimum 9VDC and maximum 15VDC