Applicable International Standards

EN ISO 12100 Safety of Machinery – Basic Concepts, General Principles for Design

EN 60204-1 Electrical Equipment of Machines Part 1: General Requirements

EN ISO 13849-1 Safety-Related Parts of Control Systems

ISO 13856-1 (EN1760-1), Safety of Machinery – Pressure-Sensitive Protective Devices

Contact: IHS Markit (Global Engineering Documents), 15 Inverness Way East, Englewood, CO 80112 USA, https://global.ihs.com/

EU/UK Declaration of Conformity (DoC)

Banner Engineering Corp. herewith declares that these products are in conformity with the provisions of the listed directives,

regulations, and all essential health and safety requirements have been met. For the complete DoC, please go to

www.bannerengineering.com.

Product

Directive

STB Self-Checking Optical Touch Buttons

EU: Machinery Directive 2006/42/EC

UK: UKCA_REGULATION

Representative in EU: Spiridon Lachanidis, Managing Director, Banner Engineering Europe Park Lane, Culliganlaan 2F bus 3,

1831 Diegem, BELGIUM

Representative in UK: Tony Coghlan, Managing Director, Turck Banner LTD Blenheim House, Blenheim Court, Wickford, Essex

SS11 8YT, Great Britain

Overview

STB Self-Checking Optical Touch Buttons are touch-activated photoelectric devices designed to replace capacitive touch switches

and mechanical push buttons. Their outputs activate while a finger is in the “touch area” (yoke) of the switch, interrupting the button’s

infrared sensing beam.

Banner STB Series buttons are ergonomically designed to eliminate the hand, wrist, and arm stresses associated with mechanical

push buttons. They require absolutely no physical pressure to operate. LED indicators light when power is on and outputs are

activated.

All models are immune to EMI, RFI, and ambient light interference. STBs have a black polyetherimide upper housing and yellow

PBT base. The 30 mm threaded base on all models provides easy mounting and easy retrofitting into existing applications. Rugged

yellow polypropylene (TP) field covers are installed on all models to prevent inadvertent switch actuation due to objects (such as

loose clothing or debris) which might accidentally block the sensing beam. The polypropylene material is capable of absorbing high

impact (even at low temperatures) and is highly resistant to abrasion and to damage by most chemicals.

Figure 1. STB Touch Button features

Output

Fault LED

Power

ON/OFF

LED

Black Polyetherimide

Yellow

Polypropylene

Field Cover

Yellow Fiber

Reinforced PBT Base

Switch

Touch

Area

WARNING:

•

Use adequate point-of-operation guarding

•

Failure to properly guard hazardous machinery can result in a dangerous condition that could lead to

serious injury or death.

•

When properly installed, a two-hand control safety device provides protection only for the hands of the

machine operator. It might be necessary to install additional safeguarding, such as safety light curtains,

additional two-hand controls, and/or hard guards, to protect all individuals from hazardous machinery.

STB Self-Checking Optical Touch Buttons are very similar to the proven and popular OTB Series buttons. The dual-microcontroller

internal design of the new buttons, however, allows the hookup to a Banner DUO-TOUCH SG Two-Hand-Control Safety Module, or

other two-hand-control designed to meet Type IIIC requirements per ISO 13851 (requiring 1 normally open and 1 normally closed

contact per input channel). These microcontrollers perform a continuous self-check. The emitter is continuously pulsed, and receiver

response is checked accordingly by the microcontrollers. STB Series Touch Buttons are designed to immediately detect any internal

component failure, go into a lockout mode, and indicate the failure with a flashing green Fault LED.

The STB outputs are not monitored by the STB circuitry, and have no external device monitoring feedback. Output monitoring must

be accomplished by using an external device, such as a Type IIIC Two-Hand-Control module.

STB Self-Checking Optical Touch Buttons

2

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P/N 64136 Rev. F