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2 Overview
General description
All ABB Jokab Safety Emergency strop grab wire safety switches conform to European Standard EN ISO
13850 and IEC 60947-5-5. They have a positive mechanical linkage between the switch contacts and the wire
as per
IEC 60947-5-1. The emergency stop switches are brought into the operational condition by pre-tensioning
the wire by use of a tensioner / gripper device which clamps the wire and then hooks to the switch eyebolts.
Correct tension can be observed by viewing the tension indicator on the switch housing. Once tensioned
the switch contact blocks can be set to the operational condition (safety contacts closed, auxiliary contacts
open) by pressing a blue reset button on the switch cover.
All of the grab wire safety switches have wire-breakage monitoring. On pulling or breakage (tension loss) of
the wire, the safety contacts are positively opened and the auxiliary contacts are closed. The switches are
mechanically latched and can then only be returned to the operational condition by a pressing the reset
button as required by EN ISO 13850.
Safety regulations
Warning! Carefully read through this entire manual before using the device.
The devices shall be installed by a trained electrician following the Safety regulations, standards and the
Machine directive.
Failure to comply with instructions, operation that is not in accordance with the use prescribed in these
instructions, improper installation or handling of the device can affect the safety of people and the plant.
For installation and prescribed use of the product, the special notes in the instructions must be carefully
observed and the technical standards relevant to the application must be considered.
In case of failure to comply with the instructions or standards, especially when tampering with and/or
modifying the product, any liability is excluded.
Distance between the eyebolts
We recommend installing the eye bolts across the whole length of the rope, min. 2.5 m to max. 3 m apart
If this cannot be achieved,
Distance between eyebolts
Less than 0,5 m
0,5 to 2,5 m
2,5 m to 3 m
More than 3 m
2TLC172248M0201, rev. C
2020-11-11
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These areas must be clearly marked as inactive zones.
Appropriate installation checks must be made at each end and the middle
of the rope system.
These checks must ensure that the system operates when the rope is pulled
in any direction and the parameters to trip the system are satisfied.
Recommended
Checks must be where the distances are extended.
These checks must ensure that the system operates when the rope is pulled
in any direction and the parameters to trip the system are satisfied.
If not satisfied, these areas must be clearly marked as inactive zones.
5
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