SICK EtherCAT microScan3 User Manual

4.3.10.2.4 Width of the collision protection field
Overview
T
he collision protection field must be designed in such a way that 2 industrial trucks
moving towards each other head-on are braked in good time. The collision protection
field must be wide enough to reliably detect the reference target on any oncoming
industrial truck. The minimum width of the collision protection field must be selected so
that the collision protection field covers the reference target of the oncoming industrial
truck, even if both industrial trucks make yawing movements.
A distance is required between the collision protection field and the front of the rack
because of the angular error of the industrial truck and because of the measurement
accuracy of the safety laser scanner. This distance should be as small as possible. A
distance equal to the TZ value plus supplement for the guide tolerance of the industrial
truck is recommended for high availability and sufficient protection. (TZ = tolerance
zone of the safety laser scanner, see "Data sheet", page 160.)
Minimum width of the collision protection field
W
CP
F
= W
RT
+ (2 × L
CPF
× tan α)
•
W
CPF
= minimum width of the collision protection field
•
W
RT
= width of the reference target In the case of several reference targets: Width
across all reference targets, i.e. from the left edge of the left reference target to
the right edge of the right reference target
10)
.
•
L
CPF
= length of the collision protection field
11)
•
α = maximum yaw angle of the industrial truck including angular resolution of the
safety laser scanner
Example
•
W
R
T
= 1400mm
12)
.
•
L
CPF
= 10400mm
•
α = 0.3°
W
CPF
= 1400mm + (2× 10400mm × tan(0,3°)) = 1400mm + 110mm = 1510mm
4.4 Integration in the electrical control system
This chapter contains important information about integration in the electrical control.
Inf
ormation about the individual steps for electrical installation of the device: see
"Electrical installation", page 80.
Information about pin assignment: see "Pin assignment", page 81.
Requirements for use
The protective device delivers safety-related shut-off signals via the network. Reliable
evaluation and switch-off of the machine must be realized in the machine controller.
10)
T
he maximum value of all industrial trucks under all occurring conditions always applies
11)
The maximum value of all industrial trucks under all occurring conditions always applies.
12)
2 reference targets, each 100mm wide, spaced 1200mm apart
4 P
ROJECT PLANNING
60
O P E R A T I N G I N S T R U C T I O N S | microScan3 – EtherCAT® 8025220/1L9Q/2023-08-14 | SICK
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