SICK 1026820, Operating Instructions Manual

Page: 43 / 152

2
Contour of the floor as reference
According to ISO 13855 and ISO 13857, the minimum distance S depends on the:
• Reach or approach speed
• Stopping time of the machine or system
(The machine stopping/run-down time can be obtained from the machine docu‐
mentation or must be determined by measurement. SICK Service can carry out a
stop time measurement on your system on request.)
• Response time of the safety laser scanner
• Supplement C to prevent reaching through
Minimum distance S
Calculate the minimum distance S using the following formula (see ISO 13855):
b
S = (K × (T
M
+ T
S
)) + C
where
• K = Approach speed (1,600 mm/s, defined in ISO 13855)
• T
M
= Stopping time of the machine or system
• T
S
= Response time of the safety laser scanner
• C = Supplement to prevent reaching over (850 mm)
Response time T
S
of the safety laser scanner
DANGER
Ineffectiveness of the protective device
If a critical response time is exceeded (for an object diameter of 150 mm and speed of
1.6 m/s: 90 ms), a person may not be detected under certain circumstances.
b
For access protection, set the total response time of the safety laser scanner to no
greater than 80 ms.
Higher response times may be permitted in specific applications if agreed with the
responsible authority, e.g., if you increase the available detection time by mounting the
safety laser scanner at an angle.
The response time T
S
of the safety laser scanner depends on the:
•
Basic response time of the safety laser scanner
•
Set multiple sampling
•
Transmission speed to external OSSDs via EFI
Further topics
• "Response times", page 129
4.3.6 Stationary vertical operation for hazardous point protection
Hazardous point protection is necessary if the operator must remain near the danger‐
ous state of the machine. For hazardous point protection, it is necessary to be able to
detect hands. To provide hand protection, a resolution of 40 mm or finer is required.
DANGER
Ineffectiveness of the protective device
The device is not suitable for detecting fingers because the finest resolution available is
30 mm.
b
Do not use the device for safety applications that require the detection of fingers.
PROJECT PLANNING
4
8010948/ZA21/2020-06-18 | SICK O P E R A T I N G I N S T R U C T I O N S | S300 43
Subject to change without notice