STI BS3-C User manual

BS3-C/L Safety Sensor System
Installation and Operating Manual
Scientific Technologies Inc.
Optical Sensor Division
Manufacturing and Sales Office
6550 Dumbarton Circle
Fremont CA 94555-3605 USA
1 / 888 / 510-4357
Tel: [phone]
Fax: [phone]
www.sti.com
© STI 1203 PN99306-0020 Rev. B
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BeamSafe BS3-C/L Safety Sensor System
Table of Contents
Section 1— Important Safety Messages . . . . . . . . . . . . . . . . page 2
Section 2—
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4
Section 3—
BS3-C/L System Description . . . . . . . . . . . . . . . page 9
Section 4—
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 10
Section 5—
Mechanical Mounting . . . . . . . . . . . . . . . . . . . . page 12
Section 6—
Electrical Installation . . . . . . . . . . . . . . . . . . . . page 13
Section 7—
LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . page 19
Section 8—
Diagnostics, Maintenance & Warranty . . . . . . page 20
Section 9—
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . page 23
Section Appendix A—
— Checkout Procedure Log . . . . . . . page 33
Section Appendix B—
— Test Procedure . . . . . . . . . . . . . . . page 34

IMPORTANT SAFETY
MESSAGES
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1 I MPORTANT S AFETY M ESSAGES 1
The BS3-C/L and associated sensors are an active opto-electronic protection
device (AOPD). The safety module BS3-C/L meets the requirements of the IEC
1496 (prEN 50100) and is certified to safety category 4.
A single-beam safety light switch is designed to guard dangerous areas working
areas on machinery. The BS3-C/L Sensor AOPD system must not be used for
point-of-operation guarding. The point of operation is defined as “
the location in
the machine tool where material is positioned and a process performed.
”
The primary task of the BS3-C/L is to enhance the safety of both the operator of
the dangerous machinery and other persons nearby.
Whether a specific machine application and BS3-C/L Sensor installation fully
complies with safety regulations depends on several items, including: the proper
application, installation, maintenance and operation of the BS3-C/L Sensor
system. These items are the sole responsibility of the purchaser, installer and
employer.
The employer is responsible for the selection and training of the personnel
necessary to properly install, operate and maintain the machine and its
safeguarding systems. The BS3-C/L Sensor must only be installed, checked out
and maintained by a qualified person, defined as “
a person or persons who, by
possession of a recognized degree or certificate of professional training, or who,
by extensive knowledge, training and experience, has successfully demonstrated
the ability to solve problems relating to the subject matter and work.
” (ANSI
B30.2-1983)
The following is a list of additional requirements which must be met before using
the BS3-C/L Sensor system:
• Never use a BS3-C/L Sensor system for point-of-operation guarding. The point-of-
operation is defined by ANSI as “ The location in the machine tool where material
is positioned and a process performed ”.
• Additional guarding such as mechanical guards may be required if the BS3-C/L
Sensor system does not protect all points of entry into the hazardous area.

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I
MPORTANT
S
AFETY
M
ESSAGES
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• The machine on which the BS3-C/L Sensor system is installed must be capable of
stopping motion anywhere in its stroke or cycle. Do not use a BS3-C/L Sensor
system on a power press with a full-revolution clutch.
• Do not use an BS3-C/L Sensor system:
— where the guarded machine presents a hazard from flying parts.
— where the guarded machine has inconsistent stopping times or inadequate control
devices or mechanisms.
— where the environment, such as severe smoke, particulate matter, or corrosive
chemicals may degrade the efficiency of the BS3-C/L Sensor system.
• When a BS3-C/L Sensor system is used as a safety device, the employer has the
responsibility to ensure that all applicable federal, state and local requirements
and other such rules, codes and regulations are satisfied.
• All safety-related machine control circuit elements, including pneumatic, electric
or hydraulic controls must be control reliable. Control reliable is defined as:
“
...the device, system or interface shall be designed, constructed and installed
such that a single component failure within the device, interface or system
shall not prevent normal stopping action from taking place, but shall prevent
a successive machine cycle...
”
• All brakes, other stopping mechanisms and controls must be in proper working
order. If the machine stop mechanisms and associated controls are not working
properly, the machine may not stop safely even though the BS3-C/L/Sensor system
is functioning properly.
•The STI test procedures must be performed after any maintenance is performed on
the machine controls or on the BS3-C/L Sensor system. The test procedure is
contained in this manual. The user must perform (at least every three months,
more often with continuous use) the preventive maintenance procedures
recommended in this manual.
• Do not perform any test or repairs other than those outlined in this manual.
• The user must follow all procedures in this manual for proper operation of the
BS3-C/L Sensor system.
The enforcement of these requirements is beyond STI’s control. The employer
has the sole responsibility to follow the preceding requirements and any other
procedures, conditions and requirements specific to his machinery.

INTRODUCTION
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2 I NTRODUCTION 2
2.1. T HEORY OF O PERATION
A BS3-C/L Sensor system is a single-beam infrared safety control. A BS3-C/L
Sensor system employs up to two separate sets of single-beam safety sensors
connected to a central control module. Interruption of a beam sends a stop signal
to the guarded machine. The BS3-C/L Sensor system design provides control
reliable operation.
The BS3-C/L controller has been designed to meet industrial demands for
flexibility and includes the following features:
• DIN rail mounting
• Short-circuit protected sensor power supply
• Manual or automatic reset
• Prepared for muting (with optional module)
2.1.1
A
REAS OF
A
PPLICATION
:
The unit can be connected to various machinery such as:
• Robotic Systems
• Cutting Machines
• Revolving Machines
• Conveyor Systems
• Production Lines
• Graphic Machinery
• Sample installation shown in the following page.

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NTRODUCTION
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Figure 2-1 BeamSafe III Application
IMPORTANT! Please read this manual completely before beginning
installation. Installation and maintenance must be performed by qualified
personnel. Machine operator safety training is also important.
BeamSafes
Hard Guarding
▲
!

INTRODUCTION
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2.2. T ECHNICAL S PECIFICATIONS
2.2.1
BS3-C/L C
ONTROLLER
Table 2-1 BS3/L Controller
Supply Voltage 24VDC ±20%
Power Consumption 600 mA with two sets of sensors connected
Enclosure Rating IP20
Max. Conductor Area 2 x 1.5 mm
2
with end sleeve, 2 x 2.5 mm
2
with
solid connectors
Safety Relay Outputs
Response Time
Max. Switching Frequency
Max. Switching Voltage
Max. Switching Current
Max. Switching Power
Min. Switching Current
Two potential free change-over N.O. outputs
each protected with 4A fuse
< 30 mS relays with force guided contacts
1/s
DC 60V, AC250V
2A
50W, 500VA
20 mA
Auxiliary (Non-Safety) Outputs
Max. Switching Voltage
Max. Switching Current
Two potential-free opto-coupler outputs
DC 30V
30 mA
Inputs Two sensors, two manual reset, two automatic
reset, two MPCE test
Diagnostics Two red-green LED
Safety Category Type 4, self-monitoring system
Requirements IEC 61496-1, -2; prEN 954-1
Operating Temperature 0° to + 55°C (32 to 131°F)
Storage Temperature -25° to +55°C (-13 to 131°F)
Weight Approx. 300g (0.7 lbs)
22
BS3-C
Sensor 2 Sensor 1
Out A Out B
17 18 19 20 21
28
23 24
25 26 27 29 30 31 32
22
17 18 19 20 21
28
23 24
25 26 27 29 30 31 32
Status
6
12345 78
14
910 11 12 13 15 16
6
1234 578
14
910 11 12 13 15 16
R
58.9
2.32
71.6
2.82
89.9
3.54
SIDE VIEW TOP VIEW
43.6
1.72

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Figure 2-2 BS3-C Mechanical Drawing
2.2.2 B EAM S AFE BS3-X/BS3-R S ENSOR S ET
Table 2-1 BS3-X/BS3-R Sensor Set
Figure 2-3 BeamSafe III-C Sensor Mechanical Drawing
Operating Range
14m (45 ft.)
Reversed Polarity
Protected
Yes
Short Circuit Protection
Yes
Maximum Cable
100 m
Angle of Aperture
<± 2°
LIght Source
Light Emitting Diode 880nm
Sensitivity Adjust
Two turn with indicator
Environmental Rating
IP67
Operating Temperature
-20° to 60°C (10 to 143°F)
Weight
60 g (0.14 lbs)
Specifications are subject to change without notice.
17
46 44
16
13.5
4M12 x 1
4.3
4
50
2
44
40
4
4.3
1
50
27.5
17
46 44
16
13.5
4M12 x 1
4.3
4
50
2
44
40
4
4.3
1
50
27.5
34

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2.2.3 BEAMSAFE III-L SENSORS
Figure 2-4 BS3-L Mechanical Drawing
Operating Range 25m (82 ft.)
Reversed Polarity
Protected Yes
Short Circuit Protection Yes
Maximum Cable 30 m
Angle of Aperture <± 2°
LIght Source Red laser, 650 mm, class 1 per EN60825-1
Connection 4-pole M12 connectors
Environmental Rating IP67
Housing Material ABS
Operating Temperature -10° to 50°C (14 to 122°F)
Weight 30 g (0.066 lbs)
Specifications are subject to change without notice.
8
0.31
4
0.16
22
0.87
23.4
0.92
1.5
0.06
R2.1
0.083
Ø15
0.59
Ø18.2
0.72
R2.1
0.083
30°
Stability LED
BS3L-SV18BS3L-MP18BS3L-SP18
Output LED 3.9
0.154
42.5
1.67
18
0.71
Mx1
M18
M12
Ø16.6
0.654
Ø16.6
0.654
66
2.6
18.8
0.74
45
1.77
28
1.10
7
0.28
31
1.22
16
0.63
5
0.2
9.5
0.374
1.3
0.05
7
0.28
6
0.24
14
0.55
2
0.08
5
0.2
50
1.97
50
1.97
30
1.18
42
1.65
30
1.18
28
1.10
34
1.34 44
1.73
55
2.17
4.2
0.166
18
0.71
20.3
0.8
10.5
0.413
1
0.04
38.3
1.51
5.5
0.216

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BS3-C/L SYSTEM DESCRIPTION
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3 BS3-C/L S YSTEM D ESCRIPTION 3
3.1. BEAMSAFE III SENSOR DESCRIPTION
Via the transmitter, the BS3-C/L controller sends out a pulsed, coded light.
Figure 3-1 BeamSafe III-C & L Sensor Transmitter and Receiver
If the light is not interrupted, it will be received by the receiver which sends the
detected pulses back to the BS3-C/L controller. The BSC-3 controller contains
redundant circuits which monitor each other and the system. If a critical
component should fail, or if a cable is damaged, this will be detected and a stop
signal will be sent to the guarded machine.
A reset function in the BS3-C/L blocks its outputs after an interruption in the
safety light field and after power up. In order to have a new machine run signal,
activation by an external reset button is necessary.
Transmitter Receiver
Transmitter Receiver