Mounting of the Safety System
16
TMC 66
Leuze electronic
DEUTSCH
E
NGLISH
FRANÇAIS
IT
A
LIANO
ESPAÑOL
N
EDERLANDS
Calculation of the safety distance
The safety distance S between photo electric sensor and hazardous area is calculated acc.
to EN 999 using the following formula:
Example for the calculation of the safety distance:
A machine with a system response time of 500 ms has to be equipped with a two-beam
safeguarding. The response time of the two-beam AOPD and the test monitoring unit
TMC 66 is 20 ms.
Application of the formula: S = K * T + C
Assigned is:
Result:
S = (1600 mm/s * (500 ms+20 ms)) + 850 mm
S = 1682 mm
S = K * T + C
S = Safety distance between photoelectric sensor and hazardous area
K = Grip and approach speed
T = Time delay between interruption of the light beam and stand-still of the machine
C = Safety constant
1200 mm with single-axis installation,
850 mm multi-axis installation
S = the minimum distance of the two-beam AOPD from the hazardous area
K = approach speed 1600 mm/s (EN 999)
T = sum out of system response time of the machine and response time of the AOPD
C
850 mm multi-axis installation