EN 201-2009 pdf download.Plastics and rubber machines – Injection moulding machines Safety requirements.
— ifa<850mm,thene2>400mm;
C) machines with vertical clamping unit and tie-bars where:
— e1ore2>l200mm;and
— maximum opening between the platens> 1200 mm;
d) machines with vertical clamping unit without he-bars where:
— one of the platen dimensions> 1200 mm; and
— maximum opening between the platens> 1200 mm.
These additional protective devices shall be:
a) for machines where the mould area is safeguarded by guards, devices which prevent the unintentional closing of interlocking guards such as:
— a mechanical latch as specified in 5.2.7; or
— for power operated guards with horizontal closing movement, a hold-to-run control device as specified in
5.2.7;
b) for machines where the mould area is safeguarded by light curtains,at any side where there is a light curtain a single acknowledgement switch as described in Annex J; after interruption of one or more light curtain(s), an acknowledgement shall be carried out at all sides of the injection moulding machine where a light curtain was interrupted.
Additionally to a) or b):
for machines with horizontal clamping unit, sensitive protective equipment to detect the presence of persons in the mould area; this equipment shall be in accordance with 5.2.7. To prevent unintentional stopping of production, e.g. due to falling parts, the device which detects the presence of persons in the mould area may be deactivated after closing the guards or resetting the light curtains for the mould area if no presence is detected. The detection device shall be automatically reactivated when a guard is opened or a light curtain is interrupted. This “muting” of the detection device shall be in accordance with EN ISO 13849-1:2008, PL = c. For machines which are designed for special production purposes, e.g. machines with rotary table in the middle of the mould area, the mechanical latch and additional presence detecting devices may be replaced by a double acknowledgement system in accordance with Annex J;
— for machines with vertical clamping unit, either a light curtain or a scanner as specified in 5.2.7 (see 7.1.11). As an alternative, a single acknowledgement system in accordance with Annex J may be used. However, it the lowest position of the clamping surface of the lower platen is less than 750 mm above the operator’s standing surface, the single acknowledgement system shall be replaced by a double acknowledgement system in accordance with Annex J.
NOTE Only one acknowledgement switch Is necessary on each side of the mould area where whole body access is possible.
For unloading operations, inside the mould area designated access and designated working positions in accordance with 5.8,8 are required.
5.2.9 Additional requirements for machines with L-Type configuration during production
Safeguarding for the mould area on the operator’s side of an L-type machine shall only be by guards and the design of any window in that guard shall take into account the maximum injection pressure and the maximum injection speed.
Ejection of material due to the forward movement of the screw or piston, when the guards of the mould area are open, shall be prevented in accordance with:
— Annex C or F or EN ISO 13849-1:2008. PL = e; or
— Annex B or E or EN ISO 13849-1:2008, PLr = d with additional automatic monitoring of the movement of the screw or piston, so that if there is a forward movement of the screw or piston when the guard is open, the drive of the injection movement shall stop in accordance with stop category 0 or 1 of
EN 602041:2006.
Ejection of material due to degradation shall be prevented:
by design of the machine and the control system so that the matertal can be Injected only In the part of the mould attached to the fixed platen and the injection can be possible only if the contact force actuated by the nozzle on the mould is detected in accordance with EN ISO 13849-1:2008, PLr = c. The presence of that part of the mould on the fixed platen shall be detected: if its presence is not detected, the forward movement of the screw/piston shall be stopped as specified in the 2’ paragraph of this sub-clause and the heating shall be stopped in accordance with stop-category 0 of EN 60204-1:2006: or
— by a mechanically (e.g. spring) or power operated flap which automatically moves in front of the nozzle when the nozzle is moved off the mould pior to mould opening. The design of the flap shall take into account the maximum injection pressure and the maximum injection speed. The closed position of the flap shall be interlocked with the opening movement of the mould in accordance with Annex A or D or EN ISO 13849-1:2008. PLr = c. In all cases, automatic monitoring of the closed position of the flap is required in each movement-cycle of the flap. If there is a failure, initiation of the next machine cycle shall be prevented and an alarm shall be given If there is no mould or the mould is not closed, the opening of the guard of the mould area shall prevent the opening of power operated flap according to Annex A or 0 or EN ISO 13849-1:2008, PL = C; EN 201-2009 pdf download.