LineStrong - Pull wire emergency stop switch

LineStrong is a pull wire emergency stop switch, used for easy reach of the emergency stop function along machines and sections of conveyors.

A pull wire emergency stop switch allows to initiate the emergency stop command from any point along the installed wire length by pulling the wire. It replaces a series of emergency stop buttons and is easier to install.

LineStrong is also available in different models for different lengths of wires, with different housing material as well as an explosion proof version.

LineStrong - Applications

Instead of multiple emergency stops - A pull wire emergency stop switch is often placed along conveyor belts or carriage paths where access to the stop function must be possible along the whole line. It is often easier to install a pull wire emergency stop switch than to place multiple emergency stop buttons if the distance is longer.

LineStrong can handle wires up to 200 m on one single switch and since the emergency stop command can be initiated from any point along the wire, this gives better access to the emergency stop function than using emergency stop buttons.

As protective device in low risk applications - LineStrong can be used as protection, for example along conveyors with low risks where the wire can be installed at waist height in front of the conveyor, which provides an emergency stop if someone walks or falls towards the conveyor, hence pulling the wire.

One, two or several switches - The maximum length of the wire attached to LineStrong depends on if there is a LineStrong unit attached to both ends of the wire or if one end is attached to a wall/fixed object. In the image below LineStrong2 is used as an example.

LineStrong - Features

Positive forced disconnected contacts

The contacts in LineStrong are positive force disconnected, which ensures that the contacts will not be held in a normally closed position due to a failure of the spring mechanism or the welding/sticking of the contacts.

Reset button

All models of LineStrong have an integrated reset button that needs to be pressed in order to reset the emergency stop if the emergency stop function has been triggered.

Emergency stop button

Most LineStrong models have an integrated emergency stop button on the housing of the switch. Since the first half meter of the wire is not intended to pull in order to trigger the emergency stop function, the integrated emergency stop button provides quick and simple access to the emergency stop function if you are standing right in front of LineStrong. The emergency stop button of LineStrong 2 can be moved to either side of LineStrong to enable best access depending on position and height of LineStrong.

Integrated LED

LineStrong2 and LineStrong3 have an integrated 2-color LED that shows if the emergency stop function has been triggered or not. The LED is also available as spare part.

Material

LineStrong is available with a housing in yellow die cast aluminum alloy or with a housing in stainless steel 316 which is recommended for severe applications in e.g. the food processing and the chemical industries.

Left hand, right hand or both sides

LineStrong1 and LineStrong2 can be mounted in any direction. Linestrong3 is available in different models depending on installation. L (left hand) should be used if the placement of the grab wire switch is to the left in the installation. R (right hand) should be used if the grab wire switch is to the right in the installation. D (double wire) has wire entries from both sides of the grab wire switch.

Wire breakage monitoring

The contacts are double switching which means that the emergency stop command is given both when someone pulls the wire and if the wire should break.

Indication of wire tension

All models are equipped with an indicator of the tension of the wire which simplifies installation and adjustment.

Easier installation with tensioner/gripper

The tensioner/gripper accessory significantly reduces the installation time. Traditional grab wire systems normally need turnbuckle and clamps, which are difficult to tension and adjust, and normally require frequent re-tensioning. The tensioner gripper integrates an eyehook, a tensioner thimble and a wire strength gripper in one assembly which enables rapid connection to the switch eyebolts and fast and accurate tensioning of the wire.

Thanks to the switch tension indicator, it is easy to adjust the system accurately and quickly. The double clamp mechanism prevents wire slippage and significantly reduces machine downtime which can occur which traditional turn-buckle systems.

For systems longer than 50 m, the tensioner/gripper is necessary on both sides.

Quick-link termination

A quick-link termination is available as an accessory in the wire pull kit, for easy connection to the safety spring or the switch eyebolt for systems up to 50 m.

Mounting accessories

The wire pull kits contains the suitable accessories for the included wire length.

• When using one switch, the wire must be anchored at the other end using a safety spring.
• The first eyeball support must be placed no more than 500 mm from the switch eyebolt or safety spring.
• The part of the wire from the wire end to the first eyebolt support shall not be used as part of the active protection coverage.
• Wire support eyebolts must be fitted at 2.5 - 3 meters intervals along the complete wire length.
• The tensioner/gripper is used to adjust the correct tension

Corner pulley

A corner pulley can be used to navigate inside or outside corners without causing damage to the wire. They are in stainless steel and can be rigidly mounted. When using a safety spring, a maximum of one corner pulley may be used, to ensure that the complete length of the wire is visible from either the switch or the spring anchorage.

Ordering information