Comparison of Legal Requirements: The Machinery Directive vs. the Machinery Regulation
1.2.4.3 Emergency stop
Machinery Directive statutory text
1.2.4.3. Emergency stop
Machinery must be fitted with one or more emergency stop devices to enable actual or impending danger to be averted.
The following exceptions apply:
— machinery in which an emergency stop device would not lessen the risk, either because it would not reduce the stopping time or because it would not enable the special measures required to deal with the risk to be taken,
— portable hand-held and/or hand-guided machinery.
The device must:
— have clearly identifiable, clearly visible and quickly accessible control devices,
— stop the hazardous process as quickly as possible, without creating additional risks,
— where necessary, trigger or permit the triggering of certain safeguard movements.
Once active operation of the emergency stop device has ceased following a stop command, that command must be sustained by engagement of the emergency stop device until that engagement is specifically overridden; it must not be possible to engage the device without triggering a stop command; it must be possible to disengage the device only by an appropriate operation, and disengaging the device must not restart the machinery but only permit restarting.
The emergency stop function must be available and operational at all times, regardless of the operating mode.
Emergency stop devices must be a back-up to other safeguarding measures and not a substitute for them.
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Machinery Regulation legal text
1.2.4.3. Emergency stop
The machinery or related product shall be fitted with one or more emergency stop devices to enable actual or impending danger to be averted.
The following exceptions apply:
(a) the machinery or related product in which an emergency stop device would not lessen the risk, either because it would not reduce the stopping time or because it would not enable the special measures required to deal with the risk to be taken;
(b) portable hand-held or hand-guided machinery or related products.
The device shall:
(a) have clearly identifiable, clearly visible and quickly accessible control devices;
(b) stop the hazardous process as quickly as possible, without creating additional risks;
(c) where necessary, trigger or permit the triggering of certain safeguard movements.
Once active operation of the emergency stop device has ceased following a stop command, that command shall be sustained by engagement of the emergency stop device until that engagement is specifically overridden; it shall not be possible to engage the device without triggering a stop command; it shall be possible to disengage the device only by an appropriate operation, and disengaging the device shall not restart the machinery or related product but only permit restarting.
The emergency stop function shall be available and operational at all times, regardless of the operating mode.
Emergency stop devices shall be a backup to other safeguarding measures and not a substitute for them.
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