Area Of Application; Product Description - elobau KE2 Serie Manual De Instrucciones

NHT0.. Emergency-Stop push-button / KE2.. Contact elements
Translation of the original operating instructions
1 Designated use
The Emergency-Stop push-buttons are electromechanical
switches designed to protect persons at or near machines.
They are used to switch off / shut down machines and systems to
prevent or reduce imminent or existing dangers to persons or damage
to the machine or the workpiece.
Safety instructions
The person installing the Emergency-Stop push-button is to be
provided with the operating instructions. Read these operating
instructions carefully and keep them in a safe place.
- Before beginning installation!
Disconnect system and device from power
supply!!
Danger
- Emergency-Stop push-buttons fulfil a personal
protection function.
Incorrect installation or manipulations may lead to
serious personal injuries!
- Emergency-Stop push-buttons must not be
circumvented, removed or otherwise put out of
action!
- The switching process may only be triggered by
suitable actuators which are safely connected to
the contact element!
- Incorrect installation or manipulations may lead to
damage to the machine and workpiece!
- The Emergency-Stop function must not be used
as a substitute for protective measures or other
safety functions but should be designed as an
additional protective measure.
- The Emergency-Stop function must not impair the
effectiveness of safety equipment or of equipment
with other safety functions.
- The designer must ensure with a risk analysis that
the Emergency-Stop push-button complies with
the required safety category in combination with
the control.
2

Area of application

The national and international statutory regulations apply for the
installation and use as well as commissioning and regular technical
inspections, in particular:
the Machinery Directive 2006/42/EC

the safety regulations

the accident prevention and safety rules

The manufacturer and users of the machine on which the safety
equipment is used are responsible for agreeing all applicable safety
rules and regulations with their competent authority and for complying
with them.
Designated use includes compliance with the relevant requirements
for installation and operation, in particular:
EN ISO 13849-1

DIN EN 60204-1

EN ISO 13850:2008

Designated use also includes regular inspection of the safety
equipment (see point 7) by experts.
3

Product description

The Emergency-Stop push-button consists of a push-button and a
contact element with up to five functions.
The Emergency-Stop push-buttons are available as a built-in version
and as a mounted version with an enclosure.
Scope of supply
GB
- Built-in version:
As a separate push-button and contact element

- Mounted version:
As a separate push-button, contact element and mounted

enclosure
Function
The push-button is actuated by the contact element. To maintain
safety in the event of a voltage drop of the contact element of the
push-button, the contact elements are also available with failure
protection. This opens a contact when the contact element is
disconnected from the button. The failure protection thus detects a
fault and triggers the emergency stop function.
Please observe the wiring diagram on the contact element.
Release
- Twist release:
turning clockwise/counter-clockwise

- Key release:
only NHT04S

4 Installation and connection of the built-in
version
- Drill installation hole (22.3 mm) in the installation board, see Fig. 2;
the Ø 9 mm hole is only required for the types with an illuminated
blocking protection collar, see Fig. 2.
- Push the push-button through the installation hole and fix with
locking nut (max. torque 2.5 Nm).
- Mount contact element and turn clockwise through one eighth of a
revolution. The contact element locks into place, see Fig. 1.
- Check whether the contacts of the failure protection are closed
when the contact element is locked in position and the button is not
pressed.
- Connect connection cables to the terminal blocks. Observe
permitted electrical and mechanical values (see "Technical
specifications").
Note: When using illuminated push-buttons, a maximum of 230 V AC
may be connected to the contact elements.
5 Installation and connection of the mounted
version
- Mount the lower part of the enclosure on a flat surface at a distance
of 59 x 39 mm (see bottom of enclosure).
- Feed the connection cable through one of the two M20 cable
bushings.
- Connect connection cables to the terminal blocks. Observe
permitted electrical and mechanical values (see "Technical
specifications").
6 Check before commissioning
Mechanical operation test
- The button is securely fixed.
- The mounting nut is tightened so that no play can be detected in
longitudinal direction.
Electrical operation test:
- Start machine
- Press button
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