BS EN 1870-13:2007 pdf free.Safety of woodworkingmachines—Circularsawing machines—Horizontal beam panel sawingmachines.
BS EN 1870-13 The requirements of EN ISO 13850:2006 apply and in addition:
The machine shall be fitted with emergency stop control devices positioned in accordance with the requirementsof 5.2.2 which, when actuated shall disconnect power from all the machine actuators except clamping devices( if fitted) and actuate the brake(s) (if provided).
The emergency stop control shall be a category 1 stop in accordance with the requirements in 4.1.4 ofEN ISO 13850:2006 and in accordance with the requirements in 10.7 of EN 60204-1:2006.The emergencystop control device shall be at any time of self latching type.
The emergency stop control circuit shall conform to category 1 in accordance with the requirements of9.2.5.4.2 of EN 60204-1:2006. The stopping sequence shall be applied in the following order whereby thestopping of a), b) and e) may be initiated simultaneously:
a) stop any saw unit(s) feed traversing movement and retract the saw blade(s) to its / their rest position;b) cut power to the saw blade spindle drive motor(s), actuate the brake(s)(if provided – see 5.3.4), release clamping pressure of the pressure beam(s);
c)return the pressure beam(s) to its / their rest position;
d) cut power to the brake(s) (if electrical and if provided) after the saw blade(s) has come to rest e.g. by a time delay of fail safe technique e.g. of capacity type or conforming to the requirements of category 3according to EN ISO 13849-1:2006;
e) cut power to the other machine actuators except to clamping device ( if fitted).
The design of the control circuits shall be such as to satisfy the emergency stopping sequence. lf a time delaydevice is used the time delay shall be at least the maximum braked run-down time. Either the time delay shalbe fixed or the time delay adjustment device shall be sealed.As an exception the category of the control circuits for the interlocking arrangements related to pressurebeams for cutting lines other than front cutting line on machines manually loaded and / or unloaded may be atleast category B in accordance with the requirements of EN ISO 13849-1:2006.BS EN 1870-13 pdf download.
BS EN 1870-13:2007 pdf free
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