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Ex ZS 71 VD
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Montage- und Anschlussanleitung / Seilzug-Notschalter
Mounting and wiring instructions / Emergency pull-wire switch
Instructions de montage et de câblage / Arrêt d'urgence à commande par câble
Istruzioni di montaggio e collegamento / Interruttore di emergenza a fune
Instruções de montagem e instalação / Chave de emergência acionada por cabo
Инструкция по монтажу и подключению / Аварийный тросовый выключатель
English
The device complies with the European standards for explosion protec-
tion EN 60079-0, -1, -31. It is intended for use in hazardous areas of
zones 1 and 2 as well as zones 21 and 22 according to EN 60079-14.
Comply with the requirements of EN 60079-14, e.g. with regard to dust
deposits and temperature limits. The device is applied on machines
and plants where an emergency-stop command is required along the
complete pull-wire. Pulling or breaking of the prestressed wire trig-
gers the switching function of the emergency pull-wire switch and
thus lead to contact latching. The reset can only be carried out manu-
ally by unlocking with the push-button. Observe country-specific
standards and directives.
Mounting and wiring
Mount the emergency pull-wire switches for one-side actuation of se-
ries Ex ZS 71 ... according to the instructions and pretense the wire ac-
cordingly (see »Mounting without compensation spring«, »Mounting
with compensation spring«, »Configuration of switch cam«).
To detect correct mounting:
1. Remove enclosure cover.
2. Tense the wire so that the switch cam is in middle position
(position B).
Special conditions and »X« marking
- The device's connection cables must have a fixed installation and be
set up in a manner that protects them from mechanical damages.
- If the connection is in an explosive area, the connection cable has to
be connected in an enclosure which complies with the requirements
of an approved ignition protection degree according to EN 60079-0,
par. 1.
Installation, mounting, dismantling
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DANGER
Live parts and explosive atmosphere. Electric
shock hazard! Explosion hazard! Before commis-
sioning, check device for correct installation. Com-
ply with national regulations.
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DANGER
Live parts. Explosive atmosphere. Electric shock
hazard! Risk of burns! Connecting and disconnect-
ing only to be performed by qualified and author-
ised personnel. Connecting and disconnecting only
in non-explosive environment.
Before mounting the pull-wire, remove the red PVC sheath from the
the pull-wire in the clamping range of the pull-wire! After fitting the
wire, pull strongly on it several times, as the pull-wire and the wire
thimble will deform. Subsequently, retense the wire using the DUPLEX
wire clamp, eye-bolt or tensioner.
Application and operation
- Use device only within the permitted electrical load limits (see
technical data).
- For short-circuit protection, use fuse size 6 A (gG/gN).
- Use device only within the permitted ambient temperature range
(see product label and technical data).
- Include the device in the equipotential bonding (earthing) via the
mounting or bracket or the external earthing connection.
Cleaning
- Use a damp cloth to clean devices in explosive areas. This prevents
electrostatic charge.
- In case of damp cleaning: Use water or mild, non-scratching,
non-chafing cleaners.
- Do not use aggressive cleaners or solvents.
Service, maintenance, repair
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DANGER
Live parts. Explosive atmosphere. Electric shock
hazard! Explosion hazard! Risk of burns! Do not
repair defective or damaged devices. Replace them.
Do not rebuild or modify the device in any way.
With careful mounting as described above, only minor maintenance is
necessary. We recommend a routine maintenance as follows:
1. Check pull-wire function.
2. Removal of dirt.
3. Check sealing of the cable or conduit connections.
Disposal
- Observe national, local and legal regulations concerning disposal.
- Recycle each material separately.
N.B.
Any mounting position is possible. Furthermore, EN 60079-14 has to
be applied for the installation of electrical equipment in explosive
areas. Moreover, the ATEX test certificate and the enclosed special
conditions have to be observed. The device has been developed in
order to assume safety functions as a part of an entire plant or ma-
chine. A complete safety system normally covers sensors, monitoring
modules, indicator switches and concepts for safe disconnection. For
the integration of the device in the entire system: strictly observe and
respect the control category determined in the risk assessment.
Therefore, a validation according to EN ISO 13849-2 or EN 62061 is
necessary. Furthermore, the Performance Level according to EN ISO
13849-1 and SIL CL Level according to EN 62061 can be lower than
the single level because of the combination of several safety compo-
nents and other safety-related devices, e.g. by serial connection of
sensors. It is the responsibility of the manufacturer of a plant or ma-
chine to guarantee the correct general function. Subject to technical
modifications. steute does not assume any liability for recommenda-
tions made or implied by this description. New claims for guarantee,
warranty or liability cannot be derived from this document beyond the
general terms and conditions of delivery.
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