Leuze electronic RSL 430 - Stationary access guarding

Mounting
Leuze electronic RSL 430 62
Protective field contour and reference contour
With a vertical protective field, you must define at least two sides of the protective field contour as refer-
ence contour. The objective is to monitor the position of the protective field with regard to its marginal area.
If the arrangement misaligns and the distance of the safety sensor to the reference surface changes as a
result, switch the safety-related switching outputs off.
e
e
S
2
3
4
5
1
1
1 Physical frame for reference contour
2 Reference contour, must cover at least two sides of the protective field
3 Safety sensor
4 Distancee between the reference contour frame and machine opening, recommended: e=150mm
5 Machine opening contour
Fig.7.13: Defining the protective field contour and reference contour, stationary point of operation guarding, verti-
cal protective field
7.4 Stationary access guarding
The vertical protective field used for access guarding only detects people during passage through. After a
person has passed through, a start/restart interlock must ensure that the dangerous movement does not
start again automatically.
S
RT
[mm] = Safety distance
K [mm/s] = Approach speed for access guarding with approach direction orthogonal to the protective
field: 2000mm/s or1600mm/s, when S
RT
>500mm
T [s] = Total time of the delay, sum from (t
a
+t
i
+t
m
)
t
a
[s] = Response time of the protective device, max. 80ms
t
i
[s] = Response time of the safety relay
t
m
[s] = Stopping time of the machine
C
RT
[mm] = Additional distance for access guarding with approach reaction with resolutions of
14to40mm, d=resolution of protective device C
RT
=8×(d-14)mm. Additional distance for
access guarding for resolutions>40mm: C
RT
=850mm (standard value for arm length)
Response times, stopping time of the machine
The safety sensor's rotary mirror rotates on its own axis every 40ms. One revolution is a scan. With each
additional scan the response time t
a
increases by 40ms. With K=2000mm/s approach speed this corre-
sponds with an increase in the safety distance of 80mm per additional scan. With K=1600mm/s it is
64mm.