BS EN ISO 13851:2019
Safety of machinery. Two-hand control devices. Principles for design and selection

Standard No.

BS EN ISO 13851:2019

Release Date

2019

Published By

British Standards Institution (BSI)

Latest

BS EN ISO 13851:2019

Scope

What is ISO 13851- Two-hand control devices (THCD)design and selection principles about? ISO 13851 discusses safety regarding two-hand control devices (THCD). ISO 13851 is an international safety standard that provides for the safety requirements and design and selection of two-hand control devices. ISO 13851 is a generic safety standard (type-B2) that specifies the safety requirements of a THCD and the dependency of the output signal from the actuation by the hand of the control actuating devices. ISO 13851 details the main characteristics of THCDs for the achievement of safety and sets out combinations of functional characteristics for all three types of standards (type A, B, C). ISO 13851 provides requirements for design and guidance on the selection (based on a risk assessment) of THCDs including the prevention of defeat, the avoidance of faults, and verification of compliance. ISO 13851 applies to all THCDs, independent of the energy used including: THCDs which are fully assembled for installation THCDs which are assembled by the machine manufacturer or integrator Note 1: ISO 13851 does not apply to devices intended to be used as enabling devices, as hold-to-run devices, or as special control devices. Note 2: ISO 13851 does not specify which types of the two-hand-control device shall be used for a specific application and while guidance is given, it does not specify the required distance between the THCD and the danger zone. Note 3: Under ISO 13851 a THCD only offers protection for the person using it. Note 4: For specific machines, the suitability of a two-hand control as a suitable protective device can be defined in a type-C standard. If such a standard do...

BS EN ISO 13851:2019 history

• 2019 BS EN ISO 13851:2019 Safety of machinery. Two-hand control devices. Principles for design and selection