CHB-C-N
Festo AG & Co. KG
Ruiter Straße 82
73734 Esslingen
Germany
+49 711 347-0
www.festo.com
Brief description 8113380
2019-05a
[8113382]
Translation of the original instructions
Checkbox CHB-C-N English.............................................
For all available product documentation è www.festo.com/pk
– In its original state without unauthorised modifications. Only the conversions or
modifications described in the documentation supplied with the product are
permitted. The guarantee will become invalid if the Checkbox is opened.
The maximum values specified for pressures, temperatures, electrical connections
etc. must not be exceeded.
Please observe the standards specified in the relevant chapters and comply with
the regulations of the trade association and the German Technical Control Board
(TÜV), the VDE conditions as well as the relevant national regulations.
1.2 Requirements for product use
For correct and safe use of the product:
Comply with the connection and ambient conditions of the product and all con
nected components specified in the technical data. Compliance with the limit
values and load limits permits operation of the product in compliance with the
relevant safety regulations.
Observe the instructions and warnings in the documentation.
The features of the conveyed part which determine the orientation and quality
must be recognizable and distinguishable for the Checkbox.
It must be possible to integrate the Checkbox in the material flow.
Qualification of specialists (personnel requirements)
This description is intended exclusively for technicians trained in control and auto
mation technology who have experience in installing and commissioning electronic
systems.
2 Product overview
The Festo Checkbox ® enables the optical (contactless) positioning and quality
inspection of conveyed parts and it precisely controls the actuators for sorting the
inspected parts and parts assigned to the result groups (tracking, ejection of
parts, etc.).
1 2 345 678
The description for the Checkbox CHB-C-N can be found in PDF format on
the CD-ROM supplied with the Checkbox or via the support portal
è www.festo.com/sp
User documentation for Checkbox CHB-C-N
Description for checkbox CHB-C-N
– GDCA-CHB-C-N-E N
Help for software packages
– Software CheckKon P.SW-KON
– Software CheckOpti P.SW-OPTI
Description of the function, commissioning, operation and
maintenance of the Checkbox.
– Operation of the CheckKon software
– Operation of the CheckOpti software
1 Safety and requirements for product use
1.1 Safety
Caution
Glare and eye irritation
With regard to the blue light hazard, the Checkbox Compact exceeds the limit
values of the free group in accordance with DIN EN 62471:2009-03. Therefore,
an assignment to risk group 1 applies for the blue light hazard. Looking at the
light source for a long or prolonged period can dazzle your eyes and cause irrita
tion. Take measures to prevent eye exposure:
Do not remove any housing parts.
Only mount/remove the prism support when the power supply is switched off.
Mount the Checkbox only in its original state with closed, intact housing.
Mount or remove the Checkbox only when the power supply is switched off.
Mount the Checkbox in such a way that it is not possible to look directly into
the light beam.
Also take measures to ensure that if the light beam is reflected off mirrored or
reflective objects, it does not pose a hazard (for example, by providing screen
ing).
Do not look directly into the light beam and do not direct the beam into the
eyes of other people.
9
aJ
1 Reserved for Festo service
2 Buffer / Feeder
3 Actuators
4 Encoder
5 24 V DC
6 PLC
7 Ethernet
8 FE
9 Start/Stop illuminated pushbutton
aJ Status/Teach illuminated
pushbutton
Fig. 1 Connections, display and control elements
Function of the illuminated pushbuttons
9 – Start and stop the Checkbox
– Display of the switching function Start (green)/Stop (red)
– Set the tolerance
– Acknowledge errors
– Save the Teach data
aJ – Switch between RUN and Teach modes
– Select the orientation in the Teach mode
– Display the scan procedure
– Call up system information (e.g. belt speed during operation with encoder)
Ordinary light sources are divergent, i.e. the illuminated area becomes
larger as the distance from the light source increases. As a result, the risk
of eye injury decreases as the distance from the light source increases.
However, as the Checkbox Compact uses parallel light, the risk of eye
injury is not reduced as the distance increases; this applies to both looking
directly at the beam and looking into the beam via a reflective surface.
Intended use
The Festo Checkbox Compact® has been designed for use under normal operating
conditions in closed rooms in industrial installations. The Checkbox documented in
this description is intended exclusively for use as follows: Contactless checking of
the position and quality of small parts e.g. screws, springs, bolts, which pass
through on a conveyor belt. Use the Checkbox only as follows:
– As intended in an industrial environment
– In perfect technical condition
1 Prism support
2 Opening for the light beam
Fig. 2 Display and visual elements
1
3
1
2
3 Display
3 Mounting
Warning
Risk of injury
During operation, make sure that no danger is caused by the controlled peri
pheral equipment
Caution
Damage to components
Before carrying out mounting, installation and maintenance work, always
switch off the power supplies
Installation site
Please note the following ambient conditions in particular:
The mounting location must be free of vibration
There must be stable mechanical fastening
Clean ambient atmosphere: Free of oil, no paint spray, no grinding dust
Screening of external light influences and extreme magnetic fields (e.g. due to
induction furnaces)
The mounting position should be as cool and vertical as possible
In this way you will achieve optimum test results and ensure a long service life of
the device.
Mount the Checkbox over the transporting device so that:
– The Checkbox and transporting device are mounted securely to each other
– The field of view of the camera is not impeded
– The optical channel is not covered by the transporting device
The Checkbox Compact has excellent imaging properties over the entire working
space. The contrast of the image is optimised for very fine details on the sensor
side.
– To achieve maximum contrast for small details, mount the device in such a way
that the objects are passed as close as possible to the prism support on the
sensor side. This is on the side with the Start/Stop button.
2
3
Transport device
In order to ensure a reliable and reproducible test result, the transporting device
used should fulfill the following requirements:
Use a high-grade transporting system which conveys the parts at a constant
speed.
Ensure the stable position of the parts, e.g. by means of mechanical devices.
Ensure a good transfer of parts from the small parts conveyor to the transport
ing device and that the transporting device is mechanically decoupled from the
small parts conveyor.
Also use mechanical devices to secure the transfer of parts from the transport
ing device to the buffer zone (e.g. drop pipe, slide, chute) of the subsequent
machine so that the orientation of parts cannot be subsequently changed.
Mounting
A mounting profile with dovetail guide is attached to the side of the Checkbox. If
you want to mount the Checkbox from the other side, remove the profile and at
tach it to the opposite side of the Checkbox.
Caution
Damage to components.
Only modify the Checkbox in a clean environment
Only use suitable screws. The screw-in depth in the device is limited to a max
imum of 6 mm
A connecting kit (type HMSV-12) is available as an accessory from Festo
1
2
3
4
2
1 Mounting profile
2 Optical channel of the camera
Fig. 4 Arrangement of the Checkbox over the transporting device (example)
4 Electrical installation
Caution
Danger from unexpected movement
Check within the framework of your EMERGENCY STOP concept to ascertain
the measures necessary for putting your machine/system into a safe state in
the event of an EMERGENCY STOP (e.g. switching off the operating voltage,
switching off pressure).
Caution
Malfunctions due to excessively long cables
Long I/O signal lines reduce the resistance to interference.
Therefore comply with the maximum permissible I/O signal line length of
30 m.
Preparing plugs and cables
Use plugs and sockets from the Festo supply programme which match the
outer diameter of the cables used (www.festo.com/catalogue).
Note
Angled connectors can transfer large forces into the device. This can lead to
mechanical destruction of the electronics.
When using angled connectors pay particular attention to ensure that no ex
cessive force is exerted on the connections. Attach cables in such a way that
only minor forces are exerted on the connections of the Checkbox.
3 Glass surface on the prism support
(opening for light beam)
1
1 Mounting profile of the Checkbox
2 Clamping elements with 4 M5x45
socket head screws
Fig. 3 Mounting the Checkbox with connecting kit HMSV-12
Note
In order to ensure a reliable test result can be achieved, the glass surfaces on
the prism supports must not be scratched or dirty
Mount the Checkbox so that passing parts do not touch the glass surfaces.
Ensure the stable position of the parts, e.g. by means of mechanical devices.
Clean the glass surfaces if necessary
3 2 M5x16 socket head screws with
centring sleeves
4 Adapter plate
Note
In this way, you will avoid interference from electromagnetic influences:
You can use unscreened cables up to 30 m in length for actuators and buffers.
Only use screened cables and plug connectors for all other connections.
Provide potential equalisation when connecting components via screened
cables. The cable screening and screen connections of the Checkbox are not
intended to carry compensating current caused by potential differences.
Use large-cross-section cable that is as short as possible.
Connect both the FE earth terminal and the cable screening with low imped
ance to the earth potential.
At the FE connection on the front panel, use an earthing strap with a suitable
cross section.
Note
To avoid damaging the device as a result of a voltage overshoot when switching
on, please observe the following:
Power supply is only permitted with round cables; do not use single wires.
To avoid voltage overshoots when connecting to low impedance supplies,
please pay attention to the lower inductance of the supply cable.
To ensure optimum attenuation of the voltage overshoot, the supply cable
should not be of too low an impedance. Festo therefore recommends a cross
section of 1.0 or 1.5 mm²
Observe the maximum load capacity of the cable.
Safeguard the supply cable appropriately. Do not exceed values in data
sheets. Only use regulated power supply units. First establish the secondary-
side connection, then switch on the power supply unit on the primary side. Do
not connect to sources when powered.
Note
For general protection of the device, and to avoid overloading the GND pins of
the interfaces in particular, please observe the following:
Do not connect any outputs in parallel.
Do not feed any voltage into the outputs; this will annul the internal current
monitoring function; if polarity reversal occurs, there is a risk that the device
will be destroyed.
Only use the GND connection of the respective plug connector or the GND of
the power supply unit as the GND.
Do not return any of the output signals at the PLC, actuator or buffer plug
connector to the GND of one of the other output connectors.
If an overload occurs, the outputs will be switched off. This also applies to the
warning or error output where applicable. These are only intended for dia
gnostic purposes. To identify the operating status use the “Ready for opera
tion” signal that operates with reverse logic. If an error occurs, this is
switched off. As a result, an external control system could identify the error.
When connecting inductive loads (solenoid coils, valves, contactors, relays,
etc.), an appropriate RC element (free-wheeling diode, RC snubber, varistor,
etc.) must be provided directly on the load.
Select appropriate plug connectors and cables as well as suitable cross sec
tions. Do not overload the cables.
Cable outside diameter Plugs/sockets
4.0 ... 6.0 mm PG 7
6.0 ... 8.0 mm PG 9
10.0 ... 12.0 mm PG 13.5
Use an operating voltage cable with a suitable cable cross section
Avoid long distances between the power supply unit and the Checkbox. Long
operating voltage cables reduce the voltage supplied by the power supply unit.
Connect the Checkbox to the operating voltage as follows:
Pin
1 Do not connect
2 +24 V DC, -15 % +20 %; protect with
3 GND
4 FE
24 V DC plug connection
4 A fast-acting fuse
4.3 Power supply for external components
When connecting the Checkbox to other devices (e.g. PLC, conveyor device) via the
connections PLC, ACTUATORS or BUFFER/FEEDER, do not connect the potential at
the “24 V DC” connection of the Checkbox with other plug connectors of the
Checkbox.
Consuming devices can also be supplied with voltage via the PLC plug.
Also observe the information in the è CHB-C-N description, chapter 3.6.
4.4 Actuators Actuators connection socket
A/1 Actuator 3
A/2 Actuator 2
3 GND
A/4 Actuator 1
5 Do not connect
2
43
1
5
4.5 Buffer/Feeder Buffer/Feeder connection socket
A/1 24 V DC / Box ready
– Reference voltage for sensors
(switched off in Stop status)
– Operating status
– Control for transporting device
(e.g. conveyor belt)
A/2 Feeder, control of the small parts con
veyor (e.g. upstream feeder bowl)
3 GND, reference voltage for sensors
E/4 Buffer, buffer zone sensor 1
5 Do not connect
2
43
1
5
Connection Plugs/sockets
Power supply socket PG 9 or PG 13.5
Sensors, actuators PG 7
In order to guarantee observance of the IP protection class for the completely
fitted Checkbox:
Tighten the union nuts of the plug connectors by hand.
Seal unused sockets with the protective caps supplied
4.1 Selection of the power supply unit
Warning
Electric shock
Injury to people, damage to the machine and system
Only use PELV circuits in accordance with IEC 60204-1 (protective extra-low
voltage, PELV) for the electrical power supply.
Observe the general requirements of IEC 60204-1 for PELV circuits.
Use only voltage sources that guarantee a reliable electric separation of oper
ating and load voltage in accordance with IEC 60204-1.
Make sure the power supply unit fulfils the requirements specified in the Check
box data sheet with regard to voltage, current and power.
Allow for a sufficient power reserve.
Observe the power consumption of connected consumers as well as system
expansions.
4.2 Connection of the operating voltage
Warning
Risk of fire
Protect the supply cable with a 4 A fast-acting fuse.
4.6 Ethernet Pin Signal M12 Ethernet connection socket
1 TD+ Transmitted data +
2 RD+ Received data +
3 TD- Transmitted data 4 RD- Received data Metal covering Screening (shield)
1)
d-coded
4.7 Encoder: Encoder connection socket
Interface for rotary pulse generator as per RS 485
specification
1 A+
2 n.c.
3 B+
4 A5 B6 5 V supply
7 GND
8 n.c.
1)
Maximum loading 180 mA
1)
1)
2
3
1
4
2
4
1
5
8
3
67
5 Commissioning
Warning
Check to see which measures are necessary for putting your machine/system in
a safe state when it is switched on and off. Sudden, unexpected movements of
the connected actuators can cause personal injury and damage to property if
e.g.
the transporting device is moved to its initial position when the power supply
is switched off,
the transporting device starts automatically if controlled by the Checkbox
when the Checkbox starts.
In order to prevent the transporting device from starting automatically when the
operating voltage is switched on, observe the following.
Select in CheckKon [View] [System parameter] Z System Z Operating modes
... z Automatic start after supply voltage on = no (factory setting).
Switching on
1. Switch on the operating voltage for the Checkbox via the power supply unit
2. Start CheckKon in order to display and set the system parameters.
3. Start the transporting device manually if necessary.
– Readiness to operate is signaled by the STOP status
– The IP address (factory setting 192.168.2.20) indicates the current IP address of
the device
– CHB-C-N firmware version number (3.5.3)
– (Hash value of the firmware version 1b95f81806a6)
Additional steps regarding preparation for commissioning can be found in
the è CHB-C-N description
6 Diagnostics and troubleshooting
The Checkbox indicates operating errors as follows:
– The Checkbox switches automatically to the STOP status.
– The illuminated pushbuttons on the Checkbox flash.
– The display shows the error code “Error” including an explanation in English (for
an overview of the types of error refer to the CHB-CN description, appendix A1).
Example:
– ERROR error number (5)
– The error description (Material jam) provides a brief textual description for the
corresponding error number and information concerning remedial measures
Pushbutton Status Significance
Start/Stop Flashes red Error message / warning
Additional information:
– Details regarding the error codes and instructions on eliminating the
errors can be found in the è CHB-C-N description, appendix A.1
– The CHB-C-N also signals faults at the PLC connection via A/17 (error)
and A/23 (warning) if applicable.
7 Repair and disposal
The prism module can be replaced if it is damaged. Additional information
about this can be found in the è CHB-C-N description, chapter 6.1
Observe the local regulations for environmentally friendly disposal of elec
tronic components.
8 Technical data
CHB-C-N
Temperature ranges
Ambient temperature [°C] 5 ... +50 with 1 A load
Storage temperature [°C] -20 °C ... +70 °C
Ambient conditions Dry
Protection against electric shock PELV (Protective Extra-Low Voltage)
CE marking (see declaration of conformity) In accordance with EU EMC Directive
Max. permissible I/O signal line length [m] 30
Max. permissible Ethernet signal line length [m] 70
Vibration resistance Severity level 2 in acc. with EN-60068
Shock resistance Severity level 2 in acc. with EN-60068
Protection class (plug connector inserted or
provided with protective cap) IP64
Electrical data
Nominal DC operating voltage [V DC] 24
Permissible voltage fluctuations [%] -15 / +20
Current consumption with load-free outputs [mA] 400
Internal fuse protection [A] 4 (fuse)
Interfaces
Connection for encoder according to RS 485 specification
Ethernet connection Ethernet interface 100 MBit/s
Dimensions
Length/width/height (without plug
connector)
Inside passage of the optical channel [mm] 59.2
Inside height of the optical channel [mm] 40
Electrical properties of the I/O signals
Outputs All outputs electronically limited to max.
Max. resultant current at “PLC” connection [A] 0.9
Max. resultant current at the Actuator,
Buffer connections [A] 1.9
Max. resultant current of all outputs [A] 3
Camera and lighting
Resolution [Pixels]
Line rate [Hz] 1000 ... 8500
Properties of conveyed parts
Component range Rotationally symmetrical parts and pre-
Min. part length [mm] 1
Max. part length Dependent on belt speed and required
Part diameter [mm] 0.5 ... 25
5 ... +45 with 3 A load
Screened from extreme
external light sources
Cleanest possible ambient air
Part 2-6 / FN 942017-4
Part 2-27 / F N 942017-5
[mm] 164 / 60 / 241
700 mA
2048 / 14 * 14
/ [ìm]
oriented par ts of any shape
resolution
Status/Teach Flashes yellow
The Checkbox cannot be started again until the fault has been eliminated:
1. Eliminate cause of malfunction
2. Acknowledge error message: Press the Start/Stop button
3. Start Checkbox: Press the Start/Stop button
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