92
Chapter4
OS32C
User’s Manual
Installation
•Reference Boundary Monitoring (RBM) must be applied when the OS32C is used for Entry Access
Protection guarding as specified in IEC61496-3:2008.
Refer to page 22 for more information on RBM.
•To ensure adequate detection a response time of 80 mS is required. If the response time exceeds
80mS, a 70 mm object with a speed of 1.6 m/s may not be detected under certain circumstances.
•Additional counter measures for protection must be provided if there is a space between the
protection zone and the machine hazard point.
Fig. 4-10 Perpendicular Approach Installation
S = (K x T) + C
S = Minimum safety distance in mm measured from the danger area to the outer contour of the safety
zone.
K = Movement or approach speed in mm/s (constant K = 1600 mm/s)
T = Delay between interruption of the safety zone and standstill of the machine in seconds consisting
of the sum of t
1 and t2.
t1 = Response time of the OS32C
t
2 = Rundown time of the machine (mechanical rundown, reaction time of control system).
C = Additional supplemental distance in millimeters
Example of safety distance calculation
K = 1600 mm/s approach speed constant
T = t
1 + t2 = 0.58s Overall response time
t
1 = 0.08 seconds OS32C response time (adjustable)
t
2 = 0.5 seconds Max. time required to full stop of the machine
C = 850mm
S = K x T + C = 1600 x 0.58 + 850 = 1778 mm
Protective Field
Contour of the floor as reference
S
To Next Page
Loading...
Need help?
General
