SICK C4000 Fusion

Chapter 6 Operating Instructions
C4000 Palletizer Std./Adv.
C4000 Fusion
60 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012249/YT69/2016-02-25
Subject to change without notice
Mounting
How to calculate the safety distance according to EN ISO 13855 and EN ISO 13857:

Calculate the safety distance using the following formula:
S = k × T + 1200 mm – (0.4 × H) + Z
App
Where …
S = Safety distance [mm]
k
= Approach speed [1600 mm/s]
T = Stopping/run-down time of the machine
+ Response time of the protective device after light path interruption [s]
1200 = Arm length (850 mm) + half step length (350 mm) according to EN ISO 13855
[mm]
H = Mounting height of the C4000
Z
App
= Application dependent supplement
Z
A
pp
comprises: ET + K
A
pp
Where …
ET = Entry depth
(a step length of 700 mm as per EN ISO 13855)
K
App
= Application dependent constant of 150 mm
(area of entry into the safety light curtain)
Example:
Stopping/run-down time of the machine = 290 ms
Response time after light path interruption = 30 ms
T = 290 ms + 30 ms = 320 ms = 0.32 s
Mounting height of the C4000 = 500 mm
Z
App
= 850 mm
S = 1600 × 0.32 + 1200 – (0.4 × 500) + 850 = 2362 mm
You can reduce the safety distance using the following factors:
 You configure exactly defined object patterns.
The supplement Z
App
is reduced by the distance between the objects. Example: With
Euro pallets a second object enters the protective field at the latest after 380 mm. For
this reason the entry depth ET is = 700 – 380 mm = 320 mm.
 You configure direction detection such that objects are not allowed to move towards the
dangerous state.
Z
App
is then only 150 mm.
 You configure an object pattern in which the first object is smaller than 60 mm (from a
mounting height of at least 300 mm, EN ISO 13855 assumes an ankle width of 70 mm,
less 10 mm tolerance).
If a person then enters the protective field, then shutdown does not take place only
after a step length, but after 150 mm.
Z
App
is then only 150 mm.