a) cut power to saw blade(s) drives actuators and any
sockets (if provided) and actuate the brake(s);
b) cut power to brake(s) (if electrical brake is fitted) after
the saw blade(s) has come to rest, e.g. by using a time
delay in accordance with 5.2.1.2 b);
If a time delay device is used the time delay shall conform
to 5.2.1.2 b) and be at least the maximum run-down time.
Either the time delay shall be fixed or the time delay
adjustment device shall be sealed.
The safety related part of the control systems (also see
5.2.1) for normal stopping shall be at least PL=c in
accordance with the requirements of EN ISO 13849-
1:2008.
Verification: By checking the relevant drawings and/or
circuit diagrams, inspection of the machine and relevant
functional testing of the machine.
The requirements of EN ISO 13850:2008 apply and in
addition:
Circular saw benches with main saw blade and scoring
saw blade driven by separate motors and/or where
provision is made for use of a demountable power feed
unit (e.g. a plug) and/or fitted with power driven
adjustments of the saw unit and/or fences shall be fitted
with an emergency stop control which cut power to all
machine actuators except workpiece clamping and which
complies with the requirements of EN 60204-1:2006,
9.2.5.4.2 and 10.7. The emergency stop control device
shall be at any time of self latching type.
For emergency stop of PDS(SR) see 4.2.2.2 "safe torque
off (STO)” and 4.2.2.3 “safe stop 1 (SS1)” of EN 61800-5-
2:2007.
If the machine is fitted with a spring actuated mechanical
brake this stop control shall be of category 0 in
accordance with the requirements of EN 60204-1:2006,
9.2.2.
If the machine is fitted with any other type of brake, e.g.
electrical brake, this stop control shall be of category 1 in
accordance with the requirements of EN 60204-1:2006,
9.2.2.
Where a category 1 stop control is fitted, the stopping
Only one sawblade motor.
A stop button adjacent with
the start button is provided
in the operating position
and easily accessed so
that the operator can stop
the machine a.s.a.p.
Emergency stop in not
necessary.
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