MECHAN CONTRILS SL4 Rope Pull Safety Switch Installation Guide

MECHAN CONTRILS SL4 Rope Pull Safety Switch Installation Guide

Operating Instructions: Safe Line SL4

The stainless steel Safe line 4 cable/push button operated system can be installed where no physical guard is present on conveyors and provide constant emergency stop access. This switch is made from 316 stainless steel and is suitable for external use, applications where there are hygiene requirements and other situations where a level of corrosion proof is required.
The Safe line 4 has the following features in one unit making.

1. The positive mode mechanism helps ensure that the contacts are immediately latched open on actuation and can only be reset by the intentional action of turning the blue reset knob. The design also protects against nuisance tripping and the effects of thermal expansion.
2. A mushroom head emergency stop button is optional on the unit to provide E-Stop access.
3. The cable status indicators make the system easy to set up and maintain for spans up to 75 meters.
4. Four sets of contacts are provided: 2 N.C. + 2 N.O or 3NC + 1NO
5. Sealed to IP69K with rugged construction using 316 stainless steel to withstand harsh conditions.
6.  Tension indicators windows on both sides of the lid, for ease when tensioning.

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The Machen Safety Grab wire SL4 conforms to the relevant international standards, such as ISO13850 (EN 418) and IEC60947-5-5. The SL4 has a positive mechanical linkage between the switch  contacts and the wire rope mechanism as per IEC60947-5-1. The SL4 switch is brought into the operational condition by pre-tensioning the rope and use of a tensioner/gripper device which clamps the rope and then hooks to the switch eyebolts. Correct tension can be observed by viewing the tension indicators on both sides of the housing. Once tensioned the switch contact blocks can be set to the operational condition (safety contacts closed, auxiliary contacts open) by turning the blue switch to the “run” position, at this point the machine/safety relay is ready to run.
On pulling/pressing the red E-stop or breaking (tension loss) of the rope, the safety contacts will open and the auxiliary contacts will close. The SL4 is mechanically latched and can then only be returned to the operational condition by turning the blue rest switch into the “run” position as required by ISO13850 (EN418).

Lid mounted E-stop button
A mushroom head emergency stop button is included on the unit to provide total E-Stop access even at the extreme ends of the span.

Cable status indicator on lid
The cable status indicators on both sides of the lid makes the system easy to setup and maintain for spans up to 75m (246 f t)

Technical Specification: SL4

Electrical
Safety Contacts| 2 NC + 2 NO or 3 NC + 1 NO
Rated Insulation Voltage (Ui)| 500V
Withstand Voltage| 2500V
Switching Current @ Voltage, Min| 5mA @ 5V DC
Rating| Utilisation Category: AC15
Operational Rating| AC15 A300      240V. 3A / 120V  6A ac     24V. 2.5A dc inductive
Thermal Current| 10A
Operating Life @100mA load| 1 x 10⁶
Operating Characteristics
Cable Span Between Switches, Max| 75m (246 ft)
Tension Force To Run Position| 103N
Tensioning For To Lockout| 188N
Operating Force, Min| <125N @ 300mm Deflection
Actuation Frequency, Max| 1 Cycle/s
Gernal Information
Construction| 316 Stainless Steel
IP Rating| IP69K
Operating Temperature| -25°C to +80°C
Fixing| 4 X M5 Security Screws
Connection| Contact Block
Indication Material| Acetal
Weight| 1.55kg
Colour| 316 Stainless Steel
Mechanical Data
Conduit entries| 3 x M20
Torque settings| Mounting M5 4.0 Nm, Terminals 1.0 Nm
Vibration resistance| 10-500Hz 0.35mm
Shock resistance| 15g 11ms
Utilization Category
A600/AC-15                              (Ue)| 600V| 500V| 240V| 120V
(Ie)| 1.2A| 1.4A| 3A| 6A
DC-13                                     (Ue)| 24V| | |
(Ie)| 2A| | |
Safety Standards

Standards| IEC 60947-5-5, ISO 13850, IEC 60947-5-1Emergency Stop Device In Accordance With ISO 13850 IEC 13849-1
Certifications| CE marked for all applicable directives
Safety Related Data

B10d| 2,000,000| PFH| 1.1 x 15-9
TM (Mission Time)| >100 Years| PFH d| 1.12 x 10-9
DC| 99%| SFF| 99.5%
MTTF d| High > 385 Years (Based on usage rate of 360 Days/Year, 24 Hours/Day, 10 Operations/Hour)
SIL up to| SIL 3 acc. to EN 62061 (If connected with safety relay or safety PLC)
Performance Level (PL) up to| PL-e acc. to EN ISO 13849-1 (If connected with safety relay or safety PLC)
Safety Category up to| CAT4 acc. to EN ISO 13849-1 (If connected with safety relay or safety PLC)

Note: May be suitable for use in performance levels Ple or Pld systems (according to ISO 13849-1) and for use in SIL2 or SIL3 systems (according
to IEC 62061) depending on the architecture and application characteristics.
Note: The safety contacts are described as normally closed (N.C) i.e, wire is tensioned as per indication and the machine is able to start.

Installation

1. Installation of the Mechan Grab wire SL4 system must be in accordance with a risk assessment for the individual application. Installation must only be conducted by competent personnel and in accordance with these instructions.
2. According to ISO13850 (EN418), pulleys may only be mounted such that a complete length of the rope can be observed.
3. Rope support eyebolts must be fitted at 2.5 m. intervals along all rope lengths between switches. The rope must be supported no more than 500mm from the Switch eyebolt or Safety Spring (if used). It is important that this first 500mm is not used as part of the active protection coverage.
4. M5 mounting bolts must be used to fix the switch. Tightening torque for mounting bolts to ensure reliable fixing is 4 Nm. Tightening torque for the lid screws, conduit entry plugs and cable glands must be 1.5 Nm to ensure IP seal. Only use the correct size gland for the conduit entry and cable outside diameter.
5. Tensioning of rope is achieved by the use of any safety tensioner kit or the Mechan Controls tensioner.

On installation set the tension to the mid position as indicated by the markers in the viewing windows of each SL4. Check the operation of the SL4 and the control circuits by pulling the rope at various locations along the active protection area and resetting each SL4 by turning the Blue Reset switch.
Ensure each time that the SL4 latches off and requires manual resetting by turning the blue reset switch. Increase the system tension further, if required, depending upon the checks along the active length of coverage. With a Mushroom type E-Stop button (Red) then test and reset each SL4 to ensure correct  function of the safety control circuits.
The typical operational condition for the successful operation of the system is less than 75N pulling force and less than 150mm deflection of rope between eyebolt supports.

Use M5 or #10-32 bolts to mount the sensor to the frame of the machine.

**Figure 1 – Typical Mounting -Safe line™ 4 Cable Pull Switch

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**Figure 2 – Typical Mounting -Safe line 4 Extended Span Cable Pull Switch

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Dimensions

All dimensions are in MM

Wiring/Connection Diagrams

Typical connection for SL4 with Machan safety relay

**Typical connection for SL4 with Machan safety relay

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Accessories

SL4 installation Kit – 10m (32.8 ft)
SL4 installation Kit – 15m (49.2 ft)
SL4 installation Kit – 20m (65.6 ft)
SL4 installation Kit – 30m (98.4 ft)
SL4 installation Kit – 50m (164 ft)
SL4 installation Kit – 75m (246 ft)
| Rope Only – 5M| **** Polypropylene Covered Steel Cable|
Rope Only – 10M
Rope Only – 20M
Rope Only – 30M
Rope Only – 40M
Rope Only – 50M
Rope Only – 60M
Rope Only – 70M
| **** 316 Stainless steel turn buckle kit| 316 Stainless Steel|
| **** Cable Clamp| Plastic &316 Stainless Steel|
| **** 316 Stainless steel eyebolt M8 x 1.25 thread size| **** 316 Stainless Steel|
| **** Anchor Plate| **** 316 Stainless Steel|

Product Selection

Example 1 : Safeline4 with E| Stop, 2NC & 2NO contacts, 20 meters of cable

Example 2: Safeline4 without E| Stop, 3NC & 1NO contacts, 75 meters of cable

Information

Safety Assessment
A risk assessment should take place to establish that the specifications of the Safe Line 4 product are suitable for the application required. See Technical Specifications below or contact Machan Controls for further information.
The products may only be installed, commissioned, operated and maintained by competent persons.
A competent person is a qualified and knowledgeable person who, because of their training, experience and current professional activity, has the specialist knowledge required. An understanding of European and International laws, directives and standards is recommended.

Maintenance
It is recommended to check the safe operation of the unit and look for signs of damage or excessive wear on a weekly basis. Damaged units should be replaced or returned to the manufacturer for repair where practical.
Disclaimer
In the interest of product development specifications are subject to change without notice. It is the responsibility of the user to ensure compliance with any acts or by-laws in place. All information regarding Machan equipment is believed to be accurate at the time of printing. Responsibility cannot be accepted for errors or omissions.

Warranty

• Warranty will be void if the following points are true:
• The product was not used for its intended purpose
• Damaged was caused by usage not stated in the manual
• Modifications have been made to the products (e. g exchanging components)
• Operating personnel are not suitably qualified

Warning

The Machan Controls Safe Line 4 Grab Wire system should not be manipulated or overridden.
Security screws are provided with every Machan product.

Machan Controls Safety Products

14/16 Seddon Place Stanley Industrial Estate Skelmersdale Lancashire WN8 8EB
Telephone: +44 (0) 1695 722264 Fax: +44 (0) 1695 729664 Email: sales@mechancontrols.co.uk
www.mechancontrols.com

References

• Mechan Controls | Safety Switches | Mechan Controls

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