UL 858 CRD-2018 UL Standard for Safety Household Electric Ranges - Section Paragraph Reference 47 9 47 10 47 11 87 17 Table SB5 1 Subject Assisted Closed Loop Cooking for Inducti.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared by UL LLC. It is normative for the applicable ULProduct Certification Program(

2、s); however, it is currently not part of the UL Standard(s) referencedbelow.Product Category (CCN): KRMXStandard Number: UL 858Standard Title: Standard for Household Electric RangesEdition Date: November 7, 2014Edition Number: 16Section / Paragraph Reference: 47.9, 47.10, 47.11,87.17, Table SB5.1Sub

3、ject: Assisted / Closed Loop Cooking for Induction CooktopsDECISION:47 Operation of Controls47.9 Induction cooktop surface units employing an assisted/closed loop cooking functionality shall beconstructed so they can only be activated manually using the 2 steps ON function, and terminatedmanually at

4、 the appliance by the 1 step OFF function.47.10 The assisted/closed loop cooking temperature regulating function shall be evaluated as anoperating control with type 2 action. The hardware and software elements of the cookware intended to beused with the cooktop shall meet the requirements of a Class

5、 A control function provided that the cooktopcontrol is compliant to the requirements outlined in table SB5.1 and employs supervisory safeguards toreduce the risk of malfunction.47.11 For assisted/closed loop cooking function to be realized, the cooktop control and the respectivecookware shall be ev

6、aluated together as a “system” to determine compatibility, and subjected to the testsof Clause 16, Annex H.17 and the applicable tests of Annex H.26 of UL 60730-187.17 For Induction cooktop surface units employing an assisted/closed loop cooking functionality whichare dependent upon a system evaluat

7、ion, in accordance with 47.10 and 47.11, the Use Instructions shouldinclude a statement, “Suitable for Use with the specific type of cookware utensilmldr ”, or similaridentification of cookware utensil.SB5 Control FunctionsSB5.1 Safety critical functions have been considered with respect to the oper

8、ating Type 2 and theprotective (safety) Type 2 Actions. All control declarations associated with control functionality shall be asnoted in Table SB5.1.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable SB5.1Control functionsFunction Title R

9、equirement UL 858ReferenceUL 858AReferenceProposed UL 60730 DeclarationHardware Safety Investigation SoftwaresafetyFunctionClassOperating/protectiveType ClassInduction Cooktop Controls Additional RequirementsUtensil (cookware)removed time outfunctionAn element shall return to the offstate if the ute

10、nsil/cookware isremoved for more than 30seconds .47.8 Table 6.1 B Operating 2 BAssisted/ClosedLoop CookingfunctionalityAn induction cooktop cookingfunctionality that is participatoryin nature and is to be activatedmanually using the 2 steps ONfunction and terminatedmanually at the appliance by the1

11、step OFF function, to assurethat the user is aware of thestatus of the appliance for thecooking mode.47.10,47.11N/A A Operating 2 See 47.11Small metal sensefunctionInduction heating elements shallbe constructed so that theelement can only be operatedwith appropriately sized cookingutensil in place.5

12、9.6 - A Operating 1 ARATIONALE FOR DECISION:Presently clause SA3.2 d) of UL 858 Supplement specifies, with respect to clause SA3.1, that the controlshall not “Enable remote operation for operating modes normally considered “attended”, such as cooktopoperation.”An induction cooktop employing an assis

13、ted/closed loop cooking functionality includes a type of cookingthat is considered participatory in nature. Aspects of this functionality include the ability to load a cookingsequence to the cooktop and alter the cooking operation according to the program. As this style of cookingmay introduce possi

14、ble changes in user behavioral response (attended vs. unattended), this functionalityrequires additional requirements to ensure a more reliable control of operation during the normal cookingmode.The functionality of this type of programmed cooking is to be initiated manually by the consumer at theap

15、pliance and activated using the 2 steps ON function. This will assure that the user is aware of the statusof the appliance for the cooking mode. Secondly, the regulation of the temperature by the control withinthe appliance, either hard wired or Bluetooth, is required to comply with the Type 2, Clas

16、s A controlfunctions For assisted/closed loop cooking function to be realized, the cooktop control and the respectivecookware shall be compatible as a “system” and subjected to the tests of Clause 16, Annex H.17 and theapplicable tests of Annex H.26 of UL 60730-1 specified in UL 60730-1. In addition

17、, the programmedcooking is to be terminated manually at the appliance by the required 1 step OFF function.STANDARD NUMBER: UL 858 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis Certification Requirement Decision is intended to documen

18、t the requirements for assisted/closed loopcooking functionality for induction cooktops only. This functionality shall occur only between the manuallyoperated 2 steps ON and 1 step OFF control functions, and requires an increased level of evaluation ofthe operating control.Copyright 2018 UL LLCUL LL

19、C, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of UL LLC. in practically applyi

20、ng therequirements of the standard. They do not represent formal interpretations of the standard underAmerican National Standards Institute (ANSI) processes. UL LLC shall not be responsible to anyone forthe use of or reliance upon Certification Requirement Decisions by anyone. UL LLC shall not incur

21、 anyobligation or liability for damages, including consequential damages, arising out of or in connection withthe use or reliance upon Certification Requirement Decisions. The electronic version of the CertificationRequirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 858 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 858 -4-No Text on This Page