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Service manual
Electronic Crane Scales
KERN HFC
Version 1.0
10/2015
GB
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
Importør:
Impex Produkter AS
Gamle Drammensvei 107
1363 Høvik
www.impex.no
info@impex.no
Tel.: 22 32 77 20
HFC-SH-e-1510
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Summary of Contents for KERN HFC
- Page 1 KERN & Sohn GmbH Ziegelei 1 Phone: +49-[0]7433- 9933-0 D-72336 Balingen Fax: +49-[0]7433-9933-149 E-Mail: info@kern-sohn.com Internet: www.kern-sohn.com Service manual Electronic Crane Scales Importør: Impex Produkter AS Gamle Drammensvei 107 1363 Høvik www.impex.no info@impex.no KERN HFC Tel.: 22 32 77 20 Version 1.0...
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Page 2: Table Of Contents
KERN HFC Version 1.0 10/2015 Service manual Contents Basic Information _______________________________________________ 4 Introdution ____________________________________________________ 4 Technical data _________________________________________________ 5 Dimensions __________________________________________________________ 5 General Safety Instructions ______________________________________ 8 Duties of the owner-operator ___________________________________________ 8 Organizational measures ______________________________________________ 8 Environmental conditions ______________________________________________ 8... - Page 3 Error Codes _________________________________________________________ 33 11.2 Determine the Problem _______________________________________________ 33 11.3 Testing Load cell ____________________________________________________ 34 11.4 Testing PCB Voltages ________________________________________________ 35 11.5 Trouble Shooting ____________________________________________________ 35 Drawing ______________________________________________________ 37 12.1 Indicator ____________________________________________________________ 37 12.2 Crane scale： _______________________________________________________ 38 HFC-SH-e-1510...
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Page 4: Basic Information
This service manual covers the EOA series and is edited for the authorized servicing personnel. Note all rights are reserved. Copying any part of this manual is prohibited without our permission. Notes on operation and setting parameter please refer to the scale corresponding user manual. HFC-SH-e-1510... -
Page 5: Technical Data
Technical data Dimensions Balance 0.6 t / 1 t Balance 3 t HFC-SH-e-1510... - Page 6 Balance 5 t Balance 10 t HFC-SH-e-1510...
- Page 7 Holding strap terminal HFC-SH-e-1510...
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Page 8: General Safety Instructions
The customer is solely responsible for material damage and injury of persons resulting from an improper use, Messrs. KERN & Sohn will not be liable under any circumstance. -
Page 9: Pay Attention To The Instructions In The Operation Manual
4.4 Pay attention to the instructions in the Operation Manual Carefully read this operation manual before setup and commissioning, even if you are already familiar with KERN balances. All language versions contain a non-binding translation. The original German is binding. -
Page 10: Safe Working
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 this. In KERN’s accredited DKD calibration laboratory test weights and balances may be... -
Page 11: Appliance Overview
Appliance overview 5.1 Rear Battery or rechargeable battery Mains connection compartment HFC-SH-e-1510... -
Page 12: Overview Of Display
5.2 Overview of display Display Significance Rechargeable battery capacity Indicators for weighing with tolerance range Totalization STABLE Stability display ZERO Zero indicator The displayed weighing value is a net weighing value Weighing Units HFC-SH-e-1510... -
Page 13: Keyboard Overview
Exit menu / back to weighing mode. Totalization Select digits for numeric entry Change-over button between gross and net weight Delete total added memory Delete on numeric entry Fixing weight display Displaying peak load value HFC-SH-e-1510... -
Page 14: Label
Do not use on building site. Keep an eye on suspended loads. Do not exceed nominal rated load of balance. (example) The product conforms to the requirements of the German Equipment and Product Safety Act. HFC-SH-e-1510... -
Page 15: Battery
This auto-off function can be deactivated in the menu. When the suspended balance is out of operation for a longer period, remove the batteries. Unscrew battery / rechargeable battery compartment in the direction of the arrow. Replace batteries and relock battery / rechargeable battery compartment. HFC-SH-e-1510... -
Page 16: Accu Operation
Turn off balance and connect power supply unit; battery is charged. Once the battery has been fully charged the display will show the symbol. Insert rechargeable battery: Unscrew battery compartment in arrow direction. Remove batteries including battery mount from the device. HFC-SH-e-1510... - Page 17 Connect cable of balance to battery cable as shown on image. Insert battery in the centre. Ensure that the cables are not kinked. Relock battery compartment. HFC-SH-e-1510...
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Page 18: Suspending The Balance
If the safety bracket is missing or damaged, please contact the crane manufacturer in order to receive a hook with this safety equipment. Attach the suspended balance to the lower hook of a crane and close the safety bracket. The crane scale’s upper eyelet should rest in the saddle (2). HFC-SH-e-1510... -
Page 19: Operation
Do not stand or go under suspended loads. Do not use on building site. Keep an eye on suspended loads. Do not exceed nominal rated load of crane, suspended balance or any kind of attachment device on the suspended balance. (example) HFC-SH-e-1510... -
Page 20: Loading The Suspended Balance
4. Lift-off the load slowly. When the load is fixed by slings, ensure that the load is well balanced on both sides and that the slings are correctly positioned HFC-SH-e-1510... - Page 21 Always use suitable lifting tackle. Only use attachment devices which guarantee a one-point suspension and where the scales can be suspended freely. Do not use too large attachment devices which cannot guarantee a one-point suspension. HFC-SH-e-1510...
- Page 22 Do not push or pull Do not pull the hook horizontally Do not use multiple suspensions HFC-SH-e-1510...
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Page 23: Menu
Confirm selected menu item by pressing . The current setting will be displayed. Change settings Switch into the available settings using Confirm setting Press , balance returns to menu Exit menu / Return to Press repeatedly. weighing mode HFC-SH-e-1510... -
Page 24: Overview
Communication channel remote control F4 CH CH 8 Service menu ProG , when display shows “ProG“ and the password query “Pn“ will Press appear. Press one after the other and the first menu block “P1 rEF“ will be displayed. HFC-SH-e-1510... - Page 25 Readability [d] 2. Weighing range cap 1 Balance capacity [max] 1. Weighing range cap 2 Balance capacity [max] 2. Weighing range commo Adjustment procedure LinE0 Linearization procedure P3 inP 12345 Display internal resolution Hold Data-HOLD function P 4 HLd PEAK Peak value function HFC-SH-e-1510...
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Page 26: Adjustment / Linearization
The weight to be used depends on the capacity of the scale. Carry out adjustment as near to maximum load as possible. Info about test weights can be found on the Internet at: http://www.kern-sohn.com Observe stable environmental conditions. A warming up time (see chapter 1) is required for stabilization. - Page 27 Single-range balance SiGrA Dual range balance dU rA Multi-interval balance dU in Acknowledge by repeatedly until „CAL“ will be displayed. Press Confirm by and select required setting by Commo Adjustment Linearization LinE0 HFC-SH-e-1510...
- Page 28 Adjustment has now been completed successfully. (example) In case of an adjustment error or incorrect adjustment value the error message “fail“ will be displayed and you must repeat the adjustment procedure. HFC-SH-e-1510...
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Page 29: Linearization
Wait for stability display, then press As soon as “LoAd 1“ is displayed attach first adjustment weight (1/3 max). Wait for stability display „STABLE“, then press As soon as “LoAd 2“ is displayed attach second adjustment weight (2/3 max). HFC-SH-e-1510... - Page 30 After successful adjustment „Pass“ will be displayed. Afterwards the balance will carry out a self-test. “Err19“ will appear briefly (Ignore error message), then the balance will change automatically into weighing mode and the total weight will be displayed. Linearization has now been completed successfully. (example) HFC-SH-e-1510...
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Page 31: Cleaning, Maintenance And Disposal
If there arose discrepancies with the safety checklist, the balance must not more be put into operation. Do not repair the suspended balance yourself. Repair may only be carried out by service partners authorized by Messrs. KERN. 10.1 Cleaning and Disposal Damage to suspended balance! ... -
Page 32: Regular Maintenance And Care
Every 12 months or If the enhanced maintenance has to be carried out by trained staff (KERN customer service). At this general revision all load carrying in any case after parts must be checked for gaps with magnetic powder. -
Page 33: Cleaning, Maintenance And Disposal
If problem goes away, its source is probably in the Load cell. Check the wiring, connecter, load cell and mechanical components of the load cell. If problem persists, its source is probably in the PCB. Check the PCB voltages, connecters, cables and function programs HFC-SH-e-1510... -
Page 34: Testing Load Cell
Connect multimeter to mV and connect to the load cell signal wires The meter should read 0.00mV ± approximately 1 % of full load. If the output reads greater than ±10% of full scale capacity, then the load cell will require replacement. HFC-SH-e-1510... -
Page 35: Testing Pcb Voltages
Check the load cell Mechanics damaged connecters OL or ------ appears on Maximum capacity Check the crane is the display exceeded installed correctly Load cell or mechanism Check again after turn damaged on the scale Power supply fault Check the power connecters HFC-SH-e-1510... - Page 36 PCB damaged Check the load cell Check the PCB Battery not charging Mains voltage is not correct. Check the mains adapter damaged voltage Charging circuit failure Check the adaptor Battery failure Check the power connecters and circuit Check the battery HFC-SH-e-1510...
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Page 37: Drawing
Support1 cover facing Key panel Support2 Screw M3x6 Screw M2.5x12 Main board Screw M3x8 gasket Paper (M3) gasket carbon steel (M3) Battery fastener Name plate Ni-H battery group 7.2V / 2000mAh Handlebar Tape nylon Screw M3x8 lower cover plate HFC-SH-e-1510... -
Page 38: Crane Scale
Wireless module Antenna protective jacket IC for display 12.2 Crane scale： Parts Name Parts Name Spec protegulum aluminum left pressure block aluminum fixed loop right pressure block aluminum elastomer aluminum Distanzbuchse aluminum rear cover aluminum seal cover aluminum HFC-SH-e-1510...