Reer VISION VXL, ADMIRAL AX Installation, Use And Maintenance Manual
8540615 • 19/12/2014 • Rev.8
1
PHOTOELECTRIC
SAFETY
BARRIER
VISION VXL
INSTALLATION USE AND MAINTENANCE
INDICE
INTRODUCTION ................................................................................................................... 2
OPERATION ......................................................................................................................... 3
INSTALLATION ..................................................................................................................... 4
POSITION ......................................................................................................................................5
SAFETY DISTANCE CALCULATION ............................................................................................6
VERTICAL POSITION OF THE BARRIER ....................................................................................7
HORIZONTAL POSITION OF THE BARRIER ..............................................................................8
ELECTRICAL CONNECTIONS .....................................................................................................9
EMITTER CONNECTIONS ............................................................................................................9
RECEIVER CONNECTIONS ...................................................................................................... 10
WARNINGS REGARDING THE CONNECTION CABLES ......................................................... 10
EXAMPLE OF CONNECTION WITH AD SR0 WITH START/RESTART INTERLOCK ACTIVATED .. 12
CONFIGURATION AND OPERATION MODES ......................................................................... 12
K1/K2 EXTERNAL CONTACTORS CONNECTION ................................................................... 13
MULTIPLE SYSTEMS ................................................................................................................ 13
USE OF DEFLECTION MIRRORS ............................................................................................. 15
DISTANCE BETWEEN REFLECTING SURFACES .................................................................. 16
MECHANICAL ASSEMBLY AND OPTICAL ALIGNMENT ......................................................... 17
OPERATION AND TECHNICAL DATA ................................................................................ 18
SIGNALS ..................................................................................................................................... 18
TEST FUNCTION ....................................................................................................................... 20
PERIODICAL SYSTEM TEST .................................................................................................... 20
OUTPUT STATUS ...................................................................................................................... 20
TECHNICAL SPECIFICATIONS ................................................................................................. 21
DIMENSIONS ...................................................................................................................... 22
CHECKOUTS AND MAINTENANCE ................................................................................... 24
VERIFICATION OF BARRIER EFFICIENCY ............................................................................. 24
TROUBLESHOOTING ................................................................................................................ 25
SPARE PARTS .................................................................................................................... 27
GUARANTEE ...................................................................................................................... 28
VISION VXL
This symbol stands by a very important warning concerning the safety of persons.
Its non-observance can cause a very serious risk for the exposed personnel.
INTRODUCTION
The VISION VXL photoelectric barrier is a multi-beam optoelectronic safety system.
It belongs to the family of Type 2 electrosensitive devices for the protection of personnel
exposed to risks arising from the use of hazardous machinery or plant, according to
standards IEC 61496-1,2 and EN 61496-1.
VISION VXL is a Type 2 photoelectric barrier composed of Emitter and Receiver with
integration of additional functions, such as the external contactors feedback control and the
manual/automatic operation management.
The LEDs present on Emitter and Receiver units labels provides the necessary information
for a correct use of the device and the evaluation of the possible operation defects.
The VISION VXL barrier system features an automatic self-diagnosis function that enables it
to detect every malfunctions (in an maximum execution time of 0,5 sec).
This safety system is permanently active and does not require any interventions from the
outside.
If necessary, for any safety-related problems contact the competent safety
authorities or industrial associations in the country of use.
For applications in the food industry, please contact the manufacturer to ensure that
the barrier contains materials that are compatible with the chemical agents utilized.
The protective function of the optoelectronic devices is not effective in the following cases:
If the machine stopping control cannot be actuated electrically and it is not possible
to stop all dangerous machine movements immediately and at any time during the
operating cycle.
If the machine generates dangerous situations due to material being expelled or
falling from overhead.
Carefully consider the risks analysis of the application and the legislation of the barrier
application Country to establish if the application is compatible with the safety category 2.
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VISION VXL
P = Pitch between two lenses
D = Diameter of one lens
R = Resolution = P+D
OPERATION
If the protected area is clear, the two outputs on the Receiver are active and enable the
machine to which they are connected to operate normally.
Each time that an object bigger than or equal in size to the resolution of the system
intercepts the optical path of one or more beams, the Receiver deactivates the outputs.
This condition enables hazardous machine movements to be stopped (by means of an
adequate machine emergency stop circuit).
The resolution is the minimum dimensions that an object must have so that, on
crossing the protected area, it will certainly intercept at least one of the optical
beams generated by the barrier (Figure 1).
Figure 1
The resolution is constant irrespectively of work conditions, as it only depends on the
geometric characteristics of the lenses and the distance between the centres of two adjacent
lenses.
The height of the protected area is the height that is actually protected by the safety
barrier. If the latter is placed horizontally, this value refers to the depth of the protected area.
The working range is the maximum operative distance that can exist between the Emitter
and the Receiver.
VISION VXL is available with the following resolutions:
– 30 mm (protected height from 150 mm to 1200 mm)
PROTECTION OF HANDS
– 40 mm (protected height from 300 mm to 1200 mm)
PROTECTION OF HANDS
VISION VXL is available also in the Multibeam configuration with the following lens pitch:
– 500mm (2 beams), 400mm (3 beams), 300mm (4 beams).
PROTECTION OF BODY
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VISION VXL
Pu = Pm x Cf
INSTALLATION
Before installing the VISION VXL safety system, make sure that:
The safety system is only used as a stopping device and not as a machine control
device.
The machine control can be actuated electrically.
All dangerous machine movements can be interrupted immediately. In particular, the
machine stopping times must be known and, if necessary, measured.
The machine does not generate dangerous situations due to materials projecting or
falling from overhead; if that is not the case, additional mechanical guards must be
installed.
The minimum dimensions of the object that must be intercepted are greater than or
equal to the resolution of the specific model.
Knowledge of the shape and dimensions of the dangerous area enables the width and height
of the relative access area to be calculated.
Compare these dimensions with the maximum working range and the height of the
protected area in relation to the specific model.
The general instructions set out below must be taken into consideration before placing the
safety device in position.
Make sure that the temperature of the environment in which the system is to be
installed is compatible with the temperature parameters contained in the technical
data sheet.
Do not install the Emitter and Receiver close to bright or high-intensity flashing light
sources.
Certain environmental conditions may affect the monitoring capacity of the
photoelectric devices. In order to assure correct operation of equipment in places
that may be subject to fog, rain, smoke or dust, the appropriate correction factors Cf
should be applied to the maximum working range values. In these cases:
where Pu and Pm are, respectively, the working and maximum range in meters.
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VISION VXL
ENVIRONMENTAL CONDITION
CORRECTION FACTOR Cf
Fog
0.25
Steam
0.50
Dust
0.50
Dense fumes
0.25
Incorrect positioning of barrier
The recommended Cf factors are shown in the table below:
If the device is installed in places that are subject to sudden changes in temperature,
the appropriate precautions must be taken in order to prevent the formation of
condensation on the lenses, which could have an adverse effect on monitoring.
POSITION
The position of the VXLE Emitter and the VXLR Receiver must prevent access to the danger
zone from above, below and from the sides, unless at least one of the optical beams has
been intercepted. Some useful information regarding the correct position of the barrier is
shown in the figure below.
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Correct positioning of barrier
Figure 2
VISION VXL
S
minimum safety distance
mm
K
approach speed of object to the dangerous area
mm/sec
t1
response time of the safety barrier in seconds
sec
t2
machine response time, in seconds, meaning the time
required for the machine to interrupt the dangerous movement
following transmission of the stop signal
sec
c
additional distance
mm
HAZARDOUS
MACHINE
S
SAFETY DISTANCE CALCULATION
The barrier must be installed at a distance that is greater than or equal to the minimum
safety distance S, so that a dangerous point can only be reached after all hazardous
machine movements have stopped (Figure 3).
According to European standard EN999, the minimum safety distance S must be calculated
using the following formula:
where:
S = K (t1 + t2) + C
The non-observance of the correct safety distance reduces or cancels the protective
action of the light curtain.
If the position of the barrier does not prevent the operator from having access to the
dangerous area without being detected, additional mechanical guards must be
installed to complete the system.
“S”=Safety distance
Figure 3
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VISION VXL
30 mm and 40 mm resolution models.
These models are suitable for the protection of
hands.
The minimum safety distance S is calculated
according to the following formula:
S = 2000(t1 + t2) + 8(D-14)
(D=resolution)
This formula is valid for distances S between 100
and 500 mm. If this formula results in S being
greater than 500 mm, the distance can be reduced
to a minimum of 500 mm by means of the following
formula:
S = 1600(t1 + t2) + 8(D-14)
If, due to the specific configuration of the machine,
the dangerous area can be accessed from above,
the highest beam of the barrier must be at a height
H of at least 1800 mm from the base G of the
machine.
Figure 4
Multibeam Models.
These models are suitable for the protection of
the entire body and must not be used to protect
arms or legs.
The minimum safety distance S is calculated
according to the following formula:
S = 1600 (t1 + t2) + 850
The reccomended height H from the base
(G) must be the following:
Figure 5
MODEL
BEAMS
Reccomended Height H (mm)
VXL 2B
VXL 3B
VXL 4B
2
3
4
400 – 900
300 – 700 – 1100
300 – 600 – 900 - 1200
safety
barrier
point of
danger
direction
of
approach
reference plane
safety barrier
point of
danger
direction
of
approach
reference plane
VERTICAL POSITION OF THE BARRIER
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VISION VXL
When the object’s direction of approach is parallel to
the floor of the protected area, the barrier must be
installed so that the distance between the outer limit
of the dangerous area and the most external optical
beam is greater than or equal to the minimum safety
distance S calculated as follows:
S = 1600(t1 + t2) + 1200 – 0.4H
where H is the height of the protected surface from
the base of the machine;
H = 15(D-50)
(D=resolution)
In this case, H must always be less than 1 meter.
Figure 6
safety barrier
point of
danger
direction
of approach
reference plane
HORIZONTAL POSITION OF THE BARRIER
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VISION VXL
PIN
COLOR
NAME
TYPE
DESCRIPTION
FUNCTIONING
1
Brown
24VDC
INPUT
+24VDC power
supply
-
3
Blue
0VDC
0VDC power supply
-
5
Grey
FE
Ground connection
-
2
White
TEST
TEST request
- Operation without TEST (+24VDC)
- TEST request (Transition
+24VDC -> 0VDC or open circuit)
4
Black
N.C. - N.C.
-
ELECTRICAL CONNECTIONS
WARNINGS
Before making the electrical connections, make sure that the supply voltage complies with
that specified in the technical data sheet.
Emitter and Receiver units must be supplied with 24Vdc±20% power supply that
guarantee safe isolation from main voltage.
The external power supply must comply with the standard EN 60204-1 (Chapter 6.4).
The electrical connections must be made according to the diagrams in this manual. In
particular, do not connect other devices to the connectors of the Emitter and Receiver.
For reliability of operation, when a diode jumper supply unit is used, its output capacity must
be at least 2000µF for each absorbed A.
EMITTER CONNECTIONS
5 poles M12 connector
Table 1
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