Panasonic SF4С Series Instruction Manual page 29

SF4C Safety light curtain
T :
c
T
Response time of this device (s)
SF4C
D
Additional distance calculated from the minimum size of the object to be detected by
pf
the safety light curtain (mm) with the formula:
D = 61.2mm
pf
NOTE
Since the calculation above is performed by taking 1 inch = 25.4mm, there is a
slight difference between the representation in mm and that in inches. Refer to
the relevant standard for details.
EXAMPLE
Calculate the safety distance with the following values:
With these values, the calculation is as follows:
In case this device is installed in a system with a maximum halt time 0.1 (s)
Hence, as per the calculations Ds is 9.15inch ≈ 232.41mm.
SEN TRONIC
AG
Produkte, Support und Service
valve, etc.) (s)
Maximum response time of the control circuit required for the brake (s)
T 7s
SF4C
d: 0.985ich ≈ 20mm
S = K x (T
= 63 x (T
= 63 x (T
= 63 x T
= 63 x T
≈ 63 x T
S = 63 x T
= 63 x 0.1 + 2.85
= 9.15inch ≈ 232.41mm
Rugghölzli 2
CH - 5453 Busslingen
+ T + T + T ) + D
s c SF4C bm
+ 0.014) + 3.4 x (d - 0.276)inch
a
+ 0.014) + 3.4 x (0.985 - 0.276)
a
63 x 0.007 + 3.4 x 0.709
a
+ 0,441 + 2.4106
a
2.85inch
a
+ 2.85
a
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
2.4 Protection Area
pf
21
mailbox@sentronic.com
www.sentronic.com