SF2-EH

SF2-EH
Robust Light Curtain
Product is discontinued Successor SF4B
SERIES
Type 4
Passes global safety
standards!
Global safety
The SF2-EH series complies with the IEC 61496-1/2 international standards, so that it can be used in different countries
throughout the world.
• CE marking based on Machine Directive and EMC Directive has been obtained.
[Type 4 based on IEC 61496-1/2, EN 61496-1, and Control Category 4 based on EN 954-1]
• C-UL US listings (UL 61496-1/2) which are required for use in the United States and Canada have been obtained.
• This series is also compatible with equipment conforming to OSHA (1910.212/217), ANSI (B11.1lB11.20) and ANSI / RIA
15.06 regulations.
Pursuit of safety
It uses two independent CPUs, which mutually check the
safety conditions. High reliability fail-safe design is realized
by incorporating dual circuits for signal processing and
output.
•
•
Further,
in order to ensure safety, FMEA (Failure Mode &
•
•
Effects Analysis) has been used to prove safe operation.
422
08/2005
Safety design of the SF2-EH series
The sensor unit continually performs self-checking on its
internal circuitry, its cable integrity and even checks for
interference from extraneous light.
In the event of any fault or malfunction, the sensor
outputs the same signal (OFF signal) as is produced
during actual beam detection operation.
SF2-EH
Exclusive controller not required
Wide area: 1,580 mm10 m 62.205 in32.808 ft
Since an exclusive controller is not required, there is no need to provide space for
it. Further, the PNP output equivalent type can be combined with an optional
safety relay unit (SF-AC) to create an intrusion detection system.
It realizes a wide sensing area with a
protective height of 1,580 mm 62.205 in
max. (80 beam channels) and a long
operating range of 10 m 32.808 ft.
Just one sensor can cover an area
where previously 2 sensors had to be
used.
Sensors connectable in series
Wide variety
Using the optional cable (SF2-CSL)
for series connection, maximum 4 sets
of sensors with a total of 192 beam
channels can be connected in series.
For example, in case of mounting the
sensors on the front, as well as, both
the sides of a danger region, previously
separate wiring was required for 3 sets
of sensors. But now, wiring equivalent
to that for only 1 set is required, thus
saving troublesome wiring and cost.
There are 13 models of sensors having
a
protective
height
ranging
from 220 mm 8.661 in to 1,580 mm
62.205 in (12 to 80 beam channels).
The sensors can be selected to suit
the monitoring area of the used
equipment.
Further, PNP output equivalent type,
as well as, NPN output equivalent type
are available.
No interference
• Up to 12 sets of sensors can be
mounted close together
• In case of series connection or parallel
connection, interference can be prevented
for up to 4 sets, respectively. Further, in
case of series and parallel mixed
connection, up to 12 sets (total 192 beam
channels) can be mounted close together.
• Effective aperture angle 2.5 or less
• Since the effective aperture angle is
narrow ( 2.5 or less), it reduces
the effect of reflection from walls, etc.,
and interference from extraneous
light.
• Convenient slit mask available
• By using the optional slit mask
(OS-SF2-H), the amount of beam
emitted or received can be restrained
to reduce the effect of extraneous
light from other sensors, etc.
Easy maintenance
Solid aluminum case
Mounting bracket enables easy beam alignment
An optional front protection cover
(FC-SF2-H) is available, so that the
sensing face of the sensor can be
protected in an adverse environment.
All models have a solid aluminum case
with a thickness of 3 mm 0.118 in. This
case is much stronger than previous
cases, so that the sensors can be
used with even greater confidence.
The beam alignment is easy since
angle adjustment is possible with the
sensor mounting bracket (MS-SF2-1).
08/2005
423
SF2-EH
APPLICATIONS
Guarding space around working robot
Safeguard for press machine
Safeguard for special purpose machine
SF2-EH80
SF2-EH80
ORDER GUIDE
Sensors Mating cable is not supplied with the sensor. Please order it separately.
Model No.
Number of
Protective
PNP output equivalent type NPN output equivalent type beam channels height (mm in)
Operating
range
Appearance
0.3 to 10 m
0.984 to 32.808 ft
SF2-EH12
SF2-EH12-N
12
220
SF2-EH16
SF2-EH16-N
16
300 11.811
SF2-EH20
SF2-EH20-N
20
380 14.961
SF2-EH24
SF2-EH24-N
24
460 18.110
SF2-EH28
SF2-EH28-N
28
540 21.260
SF2-EH32
SF2-EH32-N
32
620 24.409
SF2-EH36
SF2-EH36-N
36
700 27.559
SF2-EH40
SF2-EH40-N
40
780 30.709
SF2-EH48
SF2-EH48-N
48
940 37.008
SF2-EH56
SF2-EH56-N
56
1,100 43.307
SF2-EH64
SF2-EH64-N
64
1,260 49.606
SF2-EH72
SF2-EH72-N
72
1,420 55.905
SF2-EH80
SF2-EH80-N
80
1,580 62.205
8.661
Mating cables Mating cable is not supplied with the sensor. Please order it separately.
Type
Appearance
Model No.
SF2-CC3
Cable with
connector on
one end
SF2-CC7
SF2-CC10
Cable with
connector on
both ends
Length: 3 m 9.843 ft
Weight: 410 g approx. (two cables)
8-core shielded cable, with connector on one end,
two cables per set
• Cable outer diameter: "6 mm "0.236 in
Length: 7 m 22.966 ft
• Connector outer diameter: "14 mm "0.551 in max.
Weight : 890 g approx. (two cables) • Cable color: Gray (for emitter)
Gray with black line (for receiver)
• Connecter color: Gray (for emitter)
Length : 10 m 32.808 ft
Black (for receiver)
Weight: 1.2 kg approx. (two cables)
SF2-CCJ10
Length: 10 m 32.808 ft
Weight: 1.2 kg approx. (two cables)
SF2-CSL02
Length: 200 mm 7.874 in
Weight: 150 g approx. (two cables)
Cable for series
connection
SF2-CSL05
424
Description
8-core shielded cable, with connector on both ends,
two cables per set
• Cable outer diameter: "6 mm "0.236 in
• Connector outer diameter: "14 mm "0.551 in max.
• Cable color: Gray (for emitter)
Gray with black line (for receiver)
• Connecter color: Gray (for emitter)
Black (for receiver)
It can connect two sensors in series.
8-core shielded cable, two cables per set
• Cable outer diameter: "6 mm "0.236 in
Length: 500 mm 19.685 in • Connector outer dimensions: 35 mm 1.378 in max.
Weight: 170 g approx. (two cables) • Cable color: Gray (for emitter and receiver)
08/2005
SF2-EH
ORDER GUIDE
Safety relay unit
Appearance
Type
(
Description
Safety relay unit for PNP output type
• Complies with Control Categories up to
4 based on EN 954-1
SF-AC (Note)
(
Safety relay
unit
For PNP
output type
light curtain
Model No.
Note: Refer to p.500l for further details.
Spare parts (Accessories for sensor)
Designation
Model No.
Description
Sensor mounting
bracket
MS-SF2-1
One set of two brackets for both the
emitter and the receiver
Intermediate
supporting
bracket
MS-SF2-2
One set of two brackets for both the
emitter and the receiver
Test rod
SF2-EH-TR
Sensing object ("30 mm "1.181 in) for
daily check
Sensor mounting
bracket
Intermediate
supporting bracket
Four bracket set
Eight M4 (length 10 mm 0.394 in)
hexagon-socket-head bolts with
washers.
Set of 2 pcs. each of U-shaped intermediate
supporting bracket and L-shaped intermediate supporting bracket
Two M4 (length 6 mm 0.236 in) hexagon-socket-head bolts, two M4 (length 10 mm 0.394 in)
hexagon-socket-head bolts with washers, two
nuts and two plain washers are attached.
OPTIONS
Applicable beam
channels For 12 beam For 16 beam For 20 beam For 24 beam For 28 beam For 32 beam For 36 beam For 40 beam For 48 beam For 56 beam For 64 beam For 72 beam For 80 beam
channels channels channels channels channels channels channels channels channels channels channels channels channels
Designation
Front
Model
protection
FC-SF2-H12 FC-SF2-H16 FC-SF2-H20 FC-SF2-H24 FC-SF2-H28 FC-SF2-H32 FC-SF2-H36 FC-SF2-H40 FC-SF2-H48 FC-SF2-H56 FC-SF2-H64 FC-SF2-H72 FC-SF2-H80
No.
cover
Slit
mask
Model
OS-SF2-H12 OS-SF2-H16 OS-SF2-H20 OS-SF2-H24 OS-SF2-H28 OS-SF2-H32 OS-SF2-H36 OS-SF2-H40 OS-SF2-H48 OS-SF2-H56 OS-SF2-H64 OS-SF2-H72 OS-SF2-H80
No.
Front
Model
protection
MC-SF2EH-12 MC-SF2EH-16 MC-SF2EH-20 MC-SF2EH-24 MC-SF2EH-28 MC-SF2EH-32 MC-SF2EH-36 MC-SF2EH-40 MC-SF2EH-48 MC-SF2EH-56 MC-SF2EH-64 MC-SF2EH-72 MC-SF2EH-80
No.
bracket
Note: The model Nos. given above denote a single unit, not a pair of units.
Front protection cover
Slit mask
Front protection bracket
Laser alignment tool
It protects front lens.
The slit mask restrains the amount of beam
emitted or received and hence reduces the
interference between neighbouring sensors.
It is also used in cases when the beam intensity
is too strong penetrating through the sensing
object.
However, the operating range reduces when the
slit mask is used.
It protects front face from
damage due to striking of an
object.
• SF-LAT-2E
• Easy to align the beam axis
with the visible laser beam.
Operating range
• Slit on the emitter side:
4 m 13.123 ft
• Slit on the receiver side:
5 m 16.404 ft
• Slit on both sides:
2 m 6.562 ft
08/2005
425
SF2-EH
SPECIFICATIONS
Number of beam
channels
12
16
20
24
28
32
36
40
48
56
64
72
80
Model PNP output equivalent type SF2-EH12 SF2-EH16 SF2-EH20 SF2-EH24 SF2-EH28 SF2-EH32 SF2-EH36 SF2-EH40 SF2-EH48 SF2-EH56 SF2-EH64 SF2-EH72 SF2-EH80
Item No.
NPN output equivalent type SF2-EH12-N SF2-EH16-N SF2-EH20-N SF2-EH24-N SF2-EH28-N SF2-EH32-N SF2-EH36-N SF2-EH40-N SF2-EH48-N SF2-EH56-N SF2-EH64-N SF2-EH72-N SF2-EH80-N
Protective height
220 mm 300 mm 380 mm 460 mm 540 mm 620 mm 700 mm 780 mm 940 mm 1,100 mm 1,260 mm 1,420 mm 1,580 mm
8.661 in 11.811 in 14.961 in 18.110 in 21.260 in 24.409 in 27.559 in 30.704 in 37.008 in 43.307 in 49.606 in 55.905 in 62.205 in
Operating range
0.3 to 10 m 0.984 to 32.808 ft
20 mm 0.787 in
Beam pitch
"30 mm "1.181 in or more opaque object
Detection capability
2.5 ° or less [for operating range exceeding 3 m 9.843 ft (conforming to IEC 61496-2 / UL 61496-2)]
Effective aperture angle
24 V DC15 %
Supply voltage
Current consumption
200 mA or less
<NPN output equivalent type>
<PNP output equivalent type>
Control outputs (OSSD 1, OSSD 2)
(Note 1)
Semiconductor output (PNP output equivalent) 2 outputs
• Maximum source current: 300 mA
• Applied voltage: Same as supply voltage (between control output and V)
• Residual voltage: 2.5 V or less (at 300 mA source current)
Semiconductor output (NPN output equivalent) 2 outputs
• Maximum sink current: 300 mA
• Applied voltage: Same as supply voltage (between control output and 0 V)
• Residual voltage: 2 V or less (at 300 mA sink current)
DC-12 or DC-13
Utilization category
ON when all beam channels are received / OFF when one or more beam channels are interrupted
(OFF also in case of any malfunction in the sensor or the synchronization signal.)
Operation mode
Incorporated
Protection circuit
Emitter
Emitting indicator: Green LED (lights up under normal emission)
Test input (emission halt) indicator: Orange LED (lights up when emission halts)
Fault indicator: Yellow LED (lights up or blinks in fault occurs in sensor)
Indicators
Response time
OFF response: 15 ms or less, ON response: 20 ms or less
OSSD ON indicator: Green LED (lights up when control outputs are ON)
OSSD OFF indicator: Red LED (lights up when control outputs are OFF)
Incident beam indicator: Green / Red LED [lights up in green when all beams are received, lights up in red with intensity
proportional to the incident light intensity for reference channel (second channel from cable side)]
Fault indicator: Yellow LED (lights up or blinks in fault occurs in sensor)
Receiver
Incorporated
Test input (emission halt) function
Interference prevention
function
Incorporated
Environmental resistance
Pollution degree
(
Series connection: 4 sets max., however total 192 beam channels max.
Parallel connection: 4 sets max., however total 192 beam channels max.
Series and parallel mixed connection: 12 sets max., however total 192 beam channels max.
)
3 (Industrial environment)
Degree of protection
IP65 (IEC)
Ambient temperature
10 to55 C 14 to131 F (No dew condensation or icing allowed), Storage:25 to70 C 13 to158 F
30 to 85 % RH, Storage: 30 to 95 % RH
Ambient humidity
Sunlight: 20,000 ?x at the light-receiving face, Incandescent light: 3,500 ?x at the light-receiving face
Ambient illuminance
1,000 V AC for one min. between all supply terminals connected together and enclosure
Dielectric strength voltage
Insulation resistance
20 MΩ, or more, with 500 V DC megger between all supply terminals connected together and enclosure
Vibration resistance
10 to 55 Hz frequency, 0.75 mm 0.030 in amplitude in X, Y and Z directions for two hours each
300 m/s2 acceleration (30 G approx.) in X, Y and Z directions for three times each
Shock resistance
Infrared LED (Peak emission wavelength: 870 nm 0.034 mil)
Emitting element
Enclosure: Aluminum, Cap: ABS
Material
8-core (0.3 mm24-core, 0.2 mm24-core) shielded cable, 0.5 m 1.640 ft long, with a connector at the end
m Use together with the optional mating cable
Cable
Extension up to total 27 m 88.583 ft is possible, for both emitter and receiver, with optional mating cables.
Cable extension
Weight (Total of emitter and receiver) 1.1 kg approx. 1.3 kg approx. 1.5 kg approx. 1.7 kg approx. 1.9 kg approx. 2.2 kg approx. 2.4 kg approx. 2.6 kg approx. 3.1 kg approx. 3.5 kg approx. 4.0 kg approx. 4.4 kg approx. 4.9 kg approx.
MS-SF2-1 (Sensor mounting bracket): 1 set for emitter and receiver, MS-SF2-2 (Intermediate supporting bracket): (Note 2), SF2-EH-TR (Test rod): 1 pc.
Accessories
•
•
•
•
Notes: 1) OSSD stands for ‘Output Signal Switching Device’.
Notes: 2) MS-SF2-2 (intermediate supporting bracket) is attached with sensors having 24, or more, beam channels.
The number of attached intermediate supporting brackets is different depending on the sensor as follows.
SF2-EH24(-N), SF2-EH28(-N), SF2-EH32(-N), SF2-EH36(-N), SF2-EH40(-N), SF2-EH48(-N), SF2-EH56(-N): 1 set
SF2-EH64(-N), SF2-EH72(-N), SF2-EH80(-N): 2 sets
426
08/2005
SF2-EH
I/O CIRCUIT AND WIRING DIAGRAMS
NPN output
equivalent type
I/O circuit diagram
Wiring diagram
CAUTION
Use a safety relay unit or an equivalent safety control
circuit for FSD.
m1
Non-voltage contact or NPN open-collector transistor
• Test input (emission halt input)
Low (0 V): Emission
High (V or open): Emission halt
Output waveform (when output is ON)
• When the sensor is in the light received condition (ON
state), the receiver self-diagnoses the output circuit. For
this purpose, the output transistor goes to the OFF state
periodically. (Refer to the figure of output condition given
at the right.)
If the OFF signal is fed back, the receiver judges the
output circuit as normal. If the OFF signal is not fed back,
the receiver judges that the output circuit or the wiring is
abnormal, and the output is maintained in the OFF state.
The frequency or the period for which the output transistor
turns OFF does not change even for the maximum
connected set No. of 4 sets connected in series.
Pulse width (width of 1 in the figure): 200 !s
Take care of the input response time of the
equipment connected to the sensor, since there is
a possibility of the equipment malfunctioning due
to the sensor OFF signal.
08/2005
427
SF2-EH
I/O CIRCUIT AND WIRING DIAGRAMS
PNP output
equivalent type
I/O circuit diagram
Wiring diagram
CAUTION
Use a safety relay unit or an equivalent safety control
circuit for FSD.
m1
Non-voltage contact or NPN open-collector transistor
• Test input (emission halt input)
Low (0 V): Emission
High (V or open): Emission halt
Output waveform (when output is ON)
• When the sensor is in the light received condition (ON
state), the receiver self-diagnoses the output circuit. For
this purpose, the output transistor goes to the OFF state
periodically. (Refer to the figure of output condition given
at the right.)
If the OFF signal is fed back, the receiver judges the
output circuit as normal. If the OFF signal is not fed back,
the receiver judges that the output circuit or the wiring is
abnormal, and the output is maintained in the OFF state.
The frequency or the period for which the output transistor
turns OFF does not change even for the maximum
connected set No. of 4 sets connected in series.
Take care of the input response time of the
equipment connected to the sensor, since there is
a possibility of the equipment malfunctioning due
to the sensor OFF signal.
428
08/2005
Pulse width (width of 1 in the figure): 200 !s
SF2-EH
I/O CIRCUIT AND WIRING DIAGRAMS
PNP output
equivalent type
SF-AC wiring diagram (Control category 4)
Set the test input polarity
selection switch of SF-AC
to the ‘NPN’ side.
Notes: 1) The shielding wire and 0 V (blue) of the SF2-EH series are connected in the their bodies.
Notes: 2) If using the equipment with the manual reset, wire X1 to X2 as per the illustration above.
If using with the automatic reset, disconnect X2 wire and connect it to X3. In this case, reset button is not required.
Notes: 3) Use a momentary-type switch for the reset button.
4) Refer to p. XXX for master/slave selection input.
PRECAUTIONS FOR PROPER USE
Refer to the applicable regulations for the region
where this device is to be used when setting up
the device. In addition, make sure that all
necessar y measures are taken to prevent
possible dangerous operating errors resulting
from earth faults.
Wiring
• Make sure that the power supply is off while wiring.
• Verify that the supply voltage variation is within the rating.
• If power is supplied from a commercial switching regulator,
ensure that the frame ground (F.G.) terminal of the power
supply is connected to an actual ground.
• In case noise generating equipment (switching regulator,
inverter motor, etc) is used in the vicinity of this sensor,
connect the frame ground (F.G.) terminal of the equipment
to an actual ground.
• Do not run the wires together with high-voltage lines or
power lines or put them in the same raceway. This can
cause malfunction due to induction.
08/2005
Others
• Do not use during the initial transient time (5 sec.) after
the power supply is switched on.
• Avoid dust, dirt and steam.
• Take care that the sensor does not come in direct contact
with water, oil, grease, or organic solvents, such as,
thinner, etc.
• Take care that the sensor is not directly exposed to
fluorescent light from a rapid-starter lamp or a high
frequency lighting device, as it may affect the sensing
performance.
429
SF2-EH
PRECAUTIONS FOR PROPER USE
Safety distance
• Do not utilize this sensor in ‘PSDI Mode’, in
which the sensor is utilized as an activator for
machinery.
• To use this product in the U.S.A., refer to OSHA
1910. 212 and OSHA 1910. 217 for installation,
and in Europe, refer to EN 999 as well. Observe
your national and local requirements before
installing this product.
• Calculate the safety distance correctly, and
always maintain a distance which is equal to or
greater than the safety distance, between the
sensing area of this sensor and the dangerous
parts of the machinery. If the safety distance is
miscalculated or if sufficient distance is not
maintained, there is a danger of serious injury or
death.
• Before designing the system, refer to the
relevant standards of the region where this
device is to be used and then install this device.
• This catalog is a guide to select a suitable product. Be
sure to read the instruction manual attached to the
product prior to its use.
• Make sure to carr y out the test run before regular
operation.
• This safety system is for use only on machinery in which
the dangerous parts can be stopped immediately, either
by an emergency stop unit or by disconnecting the power
supply. Do not use this system with machinery which
cannot be stopped at any point in its operation cycle.
Sensing area
• Make sure to install this product such that any
part of the human body that passes through the
sensing area is detected before it reaches
dangerous machine parts.
If the human body is not detected, there is a
danger of serious injury or death.
• Do not use any reflective type or retroreflective
type arrangement.
Correct mounting method
• Safety distance is calculated based on the following
equation when a person moves perpendicular (normal
intrusion) to the sensing area of the sensor.
(Please check the latest standards for the equation.)
For use in Europe (as per EN 999)
• Equation 1
DKTC
• D: Safety distance (mm)
Minimum required distance between the surface of the sensing
area and dangerous part of machine.
• K: Intrusion speed of operator’s body or objects (mm/sec.)
Normally, taken as 2,000 (mm/sec.) for calculation.
• T: Response time of total equipment (sec.)
TTmTSF2
Tm: Maximum halt time of device (sec.)
TSF2: Response time of the SF2-EH series 0.015 (sec.)
• C: Additional distance calculated from the size of the minimum
sensing object of the sensor (mm)
Note that the value of C is not less than or equal to 0.
C8(d14)
d: Minimum sensing object diameter 30 (mm) 1.181 (in)
For use in U.S.A. (as per ANSI B11.19)
• Equation 2
Wrong mounting method
430
DK(TsTcTSF2Tbm)Dpf
• D: Safety distance (mm)
Minimum required distance between the surface of the sensing
area and dangerous part of machine.
• K: Intrusion speed {Recommended value in OSHA is 63 (inch/sec.)
[c1,600 (mm/sec.)]}
ANSI B11.19 does not define the intrusion speed (K). When determining
K, consider possible factors including physical ability of operators.
• Ts: Halt time calculated from the operation time of the control element (air valve, etc.) (sec.)
• Tc: Maximum response time of the control circuit required for the
brake to function. (sec.)
• TSF2: Response time of the SF2-EH series 0.015 (sec.)
• Tbm: Additional halt time tolerance for the brake monitor (sec.)
TbmTa(TsTc)
Ta: Setting time of brake monitor (sec.)
When the machine is not equipped with a break monitor, it is
recommended that 20 % or more of (Ts Tc) is taken as
additional halting time.
• Dpf: Additional distance calculated from the size of the minimum
sensing object of the sensor (mm)
Dpf78.2 mm 3.079 in
Dpf3.4(d0.276) (inch)
Dpf3.4(d7) (mm)
d: Minimum sensing object diameter 1.2 (inch)c30 (mm)
Note that the value of Dpf is not less than or equal to 0.
08/2005
SF2-EH
PRECAUTIONS FOR PROPER USE
Influence of reflective surface
Mounting of intermediate supporting bracket (MS-SF2-2)
Install the sensor by considering the effect of
nearby reflective surfaces and take suitable
countermeasures. Failure to do so may cause the
sensor not to detect, resulting in serious injury or
• Keep the minimum distance given below, between the
sensor and a reflective surface.
Side view
Distance
between
emitter and
receiver, L
Top view
<Side mounting>
Allowable
setting
distance, D
0.3 to 3 m
0.984 to 9.843 ft
0.16 m
0.525 ft
3 to 10 m
9.843 to 32.808 ft
Ltan $ $3 L0.052 (m)
0.171 (ft)
1 Choose the mounting direction for the L- and U-shaped
intermediate supporting brackets based on the mounting
direction (side or back), and temporarily tighten the
mounting brackets with the hexagon-socket-head bolt
(M4, length 10 mm 0.394 in). Tighten it securely, after
beam alignment. The tightening torque should be
1.2 N
m or less.
<Back mounting>
2 Clasp the body of the sensor with the U-shaped
intermediate supporting bracket, and temporarily tighten
with the hexagon-socket-head bolt (M4, length 6 mm
0.236 in) for position adjustment. Tighten it securely,
after beam alignment. The tightening torque should be
1.2 N
m or less.
<Side mounting>
<Back mounting>
Note: The effective aperture angle for this sensor is 2.5 (with L 3 m
9.843 ft) as required by IEC 61496-2 / UL 61496-2. However, install
this sensor away from the reflective surfaces, assuming an effective
aperture angle of 3 to provide for misalignment, etc., during
installation.
Mounting
• The minimum bending radius of the cable is R35 mm
R1.378 in.
Mount the sensor considering cable bending radius.
Mounting of sensor mounting bracket (MS-SF2-1)
• Choose the mounting direction for the sensor mounting
bracket based on the mounting direction (side or back),
and temporarily tighten the brackets with the two hexagonsocket-head bolts with washers for adjusting the mounting
angle (M4, length 10 mm 0.394 in). Tighten it securely,
after beam alignment. The tightening torque should be
1.2 N
m or less.
<Side mounting>
Note: The above drawing shows the intermediate supporting bracket
mounted on the emitter. In case of mounting on the receiver, note that
the intermediate supporting bracket is upside down.
Mounting of cable for series connection (SF2-CSL)
1 Remove four M4 screws (length 10 mm 0.394 in) on the
main sensor and the sub sensor as given below.
<Back mounting>
2 As shown below, mount the cable for series connection
at the place on the main sensor and the sub sensor from
where the screws have been removed.
08/2005
431
SF2-EH
PRECAUTIONS FOR PROPER USE
Test input (emission halt) function
Connection
• The emission is halted when the test input (emission halt
input) wire (pink) is connected toV or kept open. The test
input (emission halt input) is useful for a start-up check since
the sensing output can be switched ON / OFF without the
sensing object.
mSignal condition
Non-voltage contact or
NPN open-collector transistor
Series connection
[4 sets max. (192 beam channels max.) connectable]
• When the danger region can
be approached from two or
more directions, multiple sets
of emitters and receivers
should be connected in
series. When a beam of any
set is interrupted, the output
turns OFF.
• Test input (emission halt input)
Low (0 V): Emission
High (V or open): Emission halt
Note: When test input (emission halt) function is not used, make sure to
connect the test input (emission halt input) wire (pink) to 0 V.
Interference prevention function
• Interference can be prevented between 4 sets max.
(192 beam channels max.) for series connection, 4 sets max.
(192 beam channels max.) for parallel connection, and 12
sets max. (192 beam channels max.) for series and parallel
mixed connection. In this case, connect the respective
interference () (gray) and interference () (gray / black) of
the adjacent sensors.
Sensor A
Sensor B
Parallel connection
[4 sets max. (192 beam channels max.) connectable]
• In case there are two, or more, danger regions which can
be approached from a single direction only, multiple sets
of emitters and receivers can be connected in parallel by
connecting their interference prevention wires to individually monitor the danger regions. Since the outputs are separate, only the output of the sensor whose beams are
interrupted is turned OFF.
Sensor A
Sensor B
Master / slave selection input
• In case of parallel connection, or series and parallel mixed
connection, before switching on the power supply, connect the
master / slave selection input (violet) of Sensor A, as
master, to 0 V and connect the master / slave selection
input (violet) of Sensor B, as slave, toV or open.
The master / slave selection is done only once at the time
of switching on of the power supply. If selection is done
after switching on of the power supply, it does not change.
Further, if the master / slave selection input is kept open
when the sensor is set as slave, ensure to insulate it.
• In case of series connection or when using 1 set, connect the
master / slave selection input (violet), as master, to 0 V.
Sensor A
Serial / parallel mixed connection
[12 sets max. (192 beam channels max.) connectable]
• In case there are two, or more, danger regions which can be
approached from two or more directions, multiple sets of emitters and receivers can be connected in series and parallel
mixed combination. For the sensors connected in series, the
output turns OFF if the beams of any of these sensors are
interrupted. For the sensors connected in parallel, the output
of only the sensor whose beams are interrupted turns OFF.
Sensor A
Sensor B
Sensor B
432
08/2005
SF2-EH
DIMENSIONS (Unit: mm in)
SF2-EH(-N) Sensor
Assembly dimensions
Mounting drawing for the sensor on which the sensor mounting brackets and the intermediate supporting brackets are
mounted
<Side mounting>
<Back mounting>
59
2.323
Emitter
Model No.
Receiver
A
B
C
Emitter
D
SF2-EH12(-N)
220
8.661
312 12.283
342 13.465
362 14.252
SF2-EH16(-N)
300 11.811
392 15.433
422 16.614
442 17.402
SF2-EH20(-N)
380 14.961
472 18.583
502 19.764
522 20.551
SF2-EH24(-N)
460 18.110
552 21.732
582 22.913
602 23.701
E
Receiver
F
322 12.677
G
H
280 11.024
SF2-EH28(-N)
540 21.260
632 24.882
662 26.063
682 26.850
362 14.252
320 12.598
SF2-EH32(-N)
620 24.409
712 28.031
742 29.213
762 30.000
402 15.827
360 14.173
SF2-EH36(-N)
700 27.559
792 31.181
822 32.362
842 33.150
442 17.402
400 15.748
SF2-EH40(-N)
780 30.709
872 34.331
902 35.512
922 36.299
482 18.976
440 17.323
SF2-EH48(-N)
940 37.008
1,032 40.630
1,062 41.811
1,082 42.598
562 22.126
520 20.472
SF2-EH56(-N)
1,100 43.307
1,192 46.929
1,222 48.110
1,242 48.898
642 25.276
600 23.622
SF2-EH64(-N)
1,260 49.606
1,352 53.228
1,382 54.409
1,402 55.197
488 19.213
976 38.425
446 17.559
892 35.118
SF2-EH72(-N)
1,420 55.905
1,512 59.527
1,542 60.709
1,562 61.496
542 21.339
1,084 42.677
500 19.685
1,000 39.370
SF2-EH80(-N)
1,580 62.205
1,672 65.827
1,702 67.008
1,722 67.795
595 23.425
1,190 46.850
574 22.598
1,148 45.197
Note: MS-SF2-2 (intermediate supporting bracket) is attached with sensors having 24, or more, beam channels.
The number of attached intermediate supporting brackets is different depending on the sensor as follows.
SF2-EH24(-N), SF2-EH28(-N), SF2-EH32(-N), SF2-EH36(-N), SF2-EH40(-N), SF2-EH48(-N), SF2-EH56(-N): 1 set
SF2-EH64(-N), SF2-EH72(-N), SF2-EH80(-N): 2 sets
08/2005
433
SF2-EH
DIMENSIONS (Unit: mm in)
MS-SF2-1
Sensor mounting bracket (Accessory)
Material: Cold rolled carbon steel (SPCC)
(Uni-chrome plated)
Four bracket set
Eight M4 (length 10 mm 0.394 in) hexagonsocket-head bolts with washers and eight
spring washers are attached.
MS-SF2-2
Intermediate supporting bracket (Accessory)
U-shaped intermediate supporting bracket
L-shaped intermediate supporting bracket
20
0.787
Material: Cold rolled carbon steel (SPCC)
(Uni-chrome plated)
Set of 2 pcs. each of U-shaped intermediate supporting bracket
and L-shaped intermediate supporting bracket
Two M4 (length 6 mm 0.236 in) hexagon-socket-head bolts,
two M4 (length 10 mm 0.394 in) hexagon-socket-head bolts
with washers, two nuts and two plain washers are attached.
Material: Cold rolled carbon steel (SPCC)
(Uni-chrome plated)
Note: MS-SF2-2 (intermediate supporting bracket) is attached with sensors having 24, or more, beam channels.
The number of attached intermediate supporting brackets is different depending on the sensor as follows.
SF2-EH24(-N), SF2-EH28(-N), SF2-EH32(-N), SF2-EH36(-N), SF2-EH40(-N), SF2-EH48(-N), SF2-EH56(-N): 1 set
SF2-EH64(-N), SF2-EH72(-N), SF2-EH80(-N): 2 sets
MC-SF2EH- Front protection bracket (Optional)
Model No.
MC-SF2EH-12
MC-SF2EH-16
MC-SF2EH-20
MC-SF2EH-24
MC-SF2EH-28
MC-SF2EH-32
MC-SF2EH-36
MC-SF2EH-40
MC-SF2EH-48
MC-SF2EH-56
MC-SF2EH-64
MC-SF2EH-72
MC-SF2EH-80
A
220
<Side mounting>
H
8.661
322
300
11.811
402
15.827
380
14.961
482
18.976
460
18.110
562
22.126
540
21.260
642
25.276
620
24.409
722
28.425
700
27.559
802
31.575
780
30.709
882
34.724
940
37.008
1,042
41.024
1,100
43.307
1,202
47.323
1,260
49.606
1,362
53.622
1,420
55.905
1,522
59.921
1,580
62.205
1,682
66.220
72
2.835
Note: The intermediate supporting bracket for protection bar is an
accessory for units with beam axis of 40 or above. Use it if there
is a large amount of bending of the bar.
434
<Back mounting>
12.677
08/2005
Download PDF