Leuze electronic RSL 430 - Stationary point of operation guarding

Mounting
Leuze electronic RSL 430 61
7.3 Stationary point of operation guarding
The safety sensor takes over the stop-activating and presence-detecting function.
Calculation of safety distanceS
RO
for access over the vertical protective field
S
RO
[mm] = Safety distance
K [mm/s] = Approach speed for point of operation guarding with approach reaction and normal approach
direction to the protective field (resolution 14to40mm): 2000mm/s or 1600mm/s, when
S
RO
>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
t
i
[s] = Response time of the safety relay
t
m
[s] = Stopping time of the machine
C
RO
[mm] = Additional distance in which a body part can move towards the protective device before the
protective device triggers
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.
Ä Select a response timet
a
of at least 80ms or higher.
Ä Determine the machine/system's stopping timet
m
.
If data is not available, you can commission Leuze electronic to perform measurements (see chapter
14 "Service and support").
Ä If an increase in the stopping time within the regular test periods is to be expected, take an additional
time into account for the machine's stopping timet
m
.
Additional distanceC
R0
for finger protection
The required finger protection is ensured here by an additional distance C, which depends on the safety
sensor resolution, in addition to the safety distance.
• Detection of an adult's hand:
• Resolution: 30mm
• Additional distance C
RO
: 128mm
• Arm detection:
• Resolution: 40mm
• Additional distance C
RO
: 208mm