Safety Handbook - JOKAB SAFETY - #251

Text version of the page

www.jokabsafety.com 8:11 72 68 23 .................. 23 71 mm 1 2 3 4 5 6 7 8 9 10 11 13 12 Two hand control device The Two hand control device is implemented by using two Safeballs™, each having two internal pushbuttons. The Safe-balls™ must be mounted a minimum distance between each other (see Mounting description). By utilising two pushbuttons in each device a double safety function is provided in each hand. The highest safety level is achieved by connecting all four pushbuttons to the JOKAB SAFETY JSBR4 safety relay or Pluto Safety-PLC. The safety relay gives a dual and supervised safety function and requires input activation .................................................................................................................... checks that all four pushbuttons have returned to their deactivated positions before a new start is allowed. The JSBR4 safety relay also provides a stop signal if one or more pushbuttons are released. One hand control device Safeball™ is also a very practical method of providing a one hand control device as it is very easy to find and activate by the machine operator. One hand devices should only be used when the operator cannot reach into the hazardous area with his/her free hand or on less dangerous machines. Before fitting the necessary risk assessment must be made to determine suitability of this type of control. To achieve the highest safety level for One hand control the Safeball™ must be connected to a JOKAB SAFETY safety relay (See Electrical Connection). Versions Safeball is available in several versions to meet different mounting requirements. .... JSTD1-A - The standard version with actuators made of plastic and 2 m of cable. .... ..JSTD1-B - Similar to the standard version but without a cable. Instead it has four wires, each 0.2 m long. .... JSTD1-C.................................................................................... .... JSTD1-E.......................................................................................... Technical data - Safeball Manufacturer: JOKAB SAFETY AB, Sweden Article number/Ordering data: .................... ...................................................... cable .................... .......................................................... cable .................... ........................................................ cable .................... .................................................... 0,2 m cable Material: Polypropylene Colour: Yellow and black Size: Height: approx. 71 mm, .......................................... .......................................... .......................................... Weight: 0.2 kg with 2 m cable 0.7 kg with 10 m cable 0.1 kg with 4x0.2 m wires Temperature: ................................................ ................................................ Protection class: IP67. Not intended for use under water Operating force: Approx. 2 N Actuator travel: 1.3 +/- 0.6 mm Max switching load: .................................................... Recommended load: ........................ Min switching load: .................................................... Contact resistance: 100 mohm Life, mechanical: > 1x106 operations at max. 1 Hz Life, electrical: ............................................................ characteristics Connection cable: ................ .................................. ................ ................................................2 ....................2 wires, approx. 0.2 m ..................................................2 Activation of a pushbutton. Function - Safeball ............................................................................ Approval number: 01-MAL-CM-0101 (Two-hand device) 01-MAL-CM-0100 (One-hand device) Chemical resistance at 20°C. Please contact us for more information. Chemical Resistance Alcohols good Paraffin oil good Milk good Silicon oil good Acetone good