steute Ex ZS 75 1O VD Mining Instructions De Montage Et De Câblage page 3

Ex ZS 75 Mining
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Montage- und Anschlussanleitung / Sicherheitsschalter
Mounting and wiring instructions / Safety switch
Instructions de montage et de câblage / Interrupteur de sécurité
Istruzioni di montaggio e collegamento / Interruttore di sicurezza
Instruções de montagem e instalação / Chave de segurança
Инструкция по монтажу и подключению / Выключатель безопасности
English
Intended use
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DANGER
Misuse and explosive environment. Explosion haz-
ard! Risk of burns! Use only in permitted catego-
ries/zones. Use device only in accordance with the
operating conditions defined in the mounting and
wiring instructions. Use device only in accordance
with the intended purpose defined in the mounting
and wiring instructions.
The safety switch in series Ex ZS 75 is an explosion-protected device in
two different variants. The first variant only includes the passive con-
necting elements of the switch inserts, while the second variant addi-
tionally includes the certified, intrinsic-safety input module SBG e xx
(OBAC 08 ATEX 265), which is a part of the intrinsic safe system type
SBS 100 (OBAC 08 ATEX 267). Safety switches like devices of group I
are applied in surface and/or underground mining in methane or coal
dust zones. Depending on the application, the safety switch is available
as emergency stop push-button, emergency pull-wire switch with one-
side or two-side actuation or as belt alignment switch for monitoring
the operation of a conveyor-belt. The safety switches series Ex ZS 75
comply with the European standards for explosion protection EN
60079-0, -1, -7, -11 and EN 50303. They are intended for use in explo-
sive hazardous areas for systems of group I category M1 and M2, des-
tined for permanent use in in methane or coal dust atmospheres. The
Ex ZS 75 emergency pull-wire switches are applied on machines and
plants where an emergency-stop command is required along the com-
plete pull-wire. Pulling or breaking of the prestressed wire triggers
the switching function of the emergency pull-wire switch and thus lead
to contact latching. The reset can only be carried out manually by un-
locking with the push-button.
Special conditions and »X«-Marking
The safety switches Ex ZS 75 without intrinsic safe input module tale
over the same protection method like the connected circuitry.
- 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.
Mount the device on an even surface. Any mounting position is possi-
ble, but the cable entries shall not be on top. Always mount emergency
pull-wire switches for two-side actuation Ex ZS 75 S in middle position,
so that the cable has the same length on both sides. Install two tension
springs with travel limitation, Material No. 1187935. 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).
Service, maintenance, repair
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DANGER
Live parts. Explosive atmosphere. Electric shock
hazard! Explosion hazard! Risk of burns! Ignoring
this message will lead to serious injuries or death.
Do not repair defective or damaged devices. Re-
place 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 regular maintenance as follows:
1. Do not open the device when electrical voltage is applied!
2. Check function.
3. Removal of dirt.
4. Check sealing of the cable or conduit connections.
Cleaning
- Use a damp cloth to clean devices in explosive hazardous 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.
Disposal
- Observe national, local and legal regulations concerning disposal.
- Recycle each material separately.
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