SICK EtherCAT microScan3 User Manual

NOTE
T
he required minimum distance depends on the safety laser scanner’s set resolution.
Take account of the following notes when choosing the resolution:
•
If you choose a fine resolution, the protective field range is smaller and the
protective field is only suitable for smaller hazardous points. But the required
minimum distance is smaller, you can mount the safety laser scanner closer to the
hazardous point.
•
If you choose a coarser resolution, the protective field range is larger and the pro‐
tective field is also suitable for larger hazardous points. But the required minimum
distance is larger, you must mount the safety laser scanner further away from the
hazardous point.
Calculating minimum distance
T
he calculation of the minimum distance is based on international or national stand‐
ards and statutory requirements applicable at the place of installation of the machine.
If the minimum distance is calculated according to ISO13855, then it depends on the
following points:
•
Machine stopping time (time interval between triggering the sensor function and
the end of the machine’s dangerous state, including signal propagation times in
the network and processing time in the control)
•
Response time of the protective device, see "Response times", page 166
•
Reach or approach speed of the person
•
Resolution (detection capability) of the safety laser scanner
•
Type of approach:orthogonal
•
Parameters specified based on the application
NOTE
A
dditional information is available in the ISO 13855 standard and in the Guidelines
Safe Machinery.
NOTE
SIC
K offers a stopping/run-down time measurement service in many countries.
Calculation example of the minimum distance S according to ISO 13855
T
he example shows the calculation of the minimum distance for an orthogonal
approach to the protective field. A different calculation may be required depending on
the application and the ambient conditions (for example, for a protective field parallel to
or at any angle to the direction of approach or an indirect approach).
►
First, calculate S using the following formula:
S = 2000mm/s × T + 8 × (d – 14mm)
where:
°
S =minimum dis
tance in millimeters (mm)
°
T=stopping/run-down time for the entire system in seconds (s)
(Response time of the safety laser scanner + machine stopping time, incl.
r
esponse time of the machine control system and signal propagation time)
°
d =r
esolution of the safety laser scanner in millimeters (mm)
The reach/approach speed is already included in the formula.
✓
If the result S is≤100mm, use S =100mm.
✓
If the result 100mm<S≤500mm, use the calculated value as the minimum
distance.
►
If the result is S>500mm, you may be able to reduce the minimum distance
using the following calculation:
PROJECT PLANNING 4
8025220/1L9Q/2023-08-14 | SICK O P E R A T I N G I N S T R U C T I O N S | microScan3 – EtherCAT®
43
Subject to change without notice

SICK EtherCAT microScan3 Specifications

General

Scanning angle	275°
Interfaces	EtherCAT
Protection class	IP65
Supply voltage	24 V DC
Resolution for protective field	30 mm
Operating voltage	24 V DC
Scanning range	5.5 m
Number of fields	128
Number of monitoring cases	128
Response time	30 ms
Operating temperature	0 °C to 50 °C
Field of application	Industrial safety
Light source	Infrared laser, 905 nm
Connection type	M12
Weight	1.2 kg