Installation Of Operation Buttons - SMC Networks VR51 Series Operation Manual

Two hand control valve

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11. Installation of Operation Buttons

When installing operation buttons, design and arrange buttons in accordance with Section 7

"Prevention of accidental actuation and of defeat" of the international standards [Safety of

machinery -- Two-hand control devices -- Principles for design and selection] ( CE/UKCA MARKED

EN ISO13851:2019 ).

1) Arrange the buttons so that it is not possible to operate both buttons at the same time only

with a single hand.

2) Arrange the buttons so that it is not possible to operate both buttons at the same time only

with a single arm.

3) Arrange the buttons so that it is not possible to operate both buttons at the same time by

using any forearm (including both forearms) or any elbow (including both elbows).

4) Arrange the buttons so that it is not possible to operate both buttons at the same time by

using a single hand and any part of body (such as knee and hip).

[Installation example]

1) Keep a sufficient distance between the buttons.

2) Install a shielding object between the buttons.

3) Install a cover on each button.

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