Omron F3SS User manual

Cat. No. SCEE711-E2-1 Note: Specifications subject to change without notice.
Single Beam Safety Sensor INSTRUCTION MANUAL
Cat. No. SCEE711-E2-1
INSTRUCTION MANUAL
Single Beam Safety
Sensor
F3SS Series
Cat. No. SCEE711-E2-1
Authorised Distributor:
Printed in Europe

i
Introduction
Thank you for purchasing the F3SS Series Single Beam Safety Sensor.
Always heed the following points when using the F3SS:
• Make sure that personnel operating the F3SS are knowledgeable about the machine on which it is installed
• Read this manual completely and be sure you understand the information provided before attempting to
operate the F3SS
• Keep the manual in a secure and convenient location and refer to it as necessary.
(1) The F3SS has not received the type approval provided by Article 44-2 of the Industrial Safety and Health
Law of Japan. Therefore, it cannot be used in Japan as a safety device for pressing or shearing machines
provided by article 42 of that law.
(2) The F3SS complies with the following regulations and standards.
IEC standard
- IEC 61496-1 (Type 4 ESPE)
- IEC 61496-2 (Type 4 AOPD)
If you use the F3SS under the condition or environment shown below, be sure to use it by leaving a mar-
gin for each rating and function and taking system safety into consideration.
(1) Use of the F3SS under any condition or environment not described in this manual.
(2) Use of the F3SS for devices and facilities requiring special safety (e.g., nuclear control, railway, aerospace,
automobile, combustion facility, medical system, space development, and large-scale amusement machin-
ery).
General conventions for safe use
The following conventions are used for precautionary items in this manual in order to ensure safe and proper
use of the F3SS. Items listed here are critical for safety and must be heeded at all times.
Regulations and Standards
Notice
Precaution on Safety
WARNING Indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
Indicates prohibited actions.

ii
Table of Contents
1 Significant Features and Requirements .................................................................................................. 1
1-1 F3SS General Description ..................................................................................................................... 1
1-2 Meeting Full Compliance ....................................................................................................................... 1
1-3 Employer Responsibilities ...................................................................................................................... 1
1-3-1 Additional Requirements ................................................................................................................. 1
2 Theory of Operation ................................................................................................................................... 2
2-1 F3SS System Specifications .................................................................................................................. 2
2-1-1 Technical Specifications* ................................................................................................................. 2
3 Description of Controls ............................................................................................................................. 4
3-1 Access to Controls ................................................................................................................................. 4
3-1-1 Emitter Indicator Lights .................................................................................................................... 4
3-1-2 Receiver Indicator Lights ................................................................................................................. 4
3-1-3 Receiver Operating Mode Switch .................................................................................................... 5
3-1-4 Emitter and Receiver Code Switches .............................................................................................. 5
3-1-5 Safety Outputs ................................................................................................................................. 5
3-1-6 Remote Start Switch (optional) ........................................................................................................ 5
4 Installation .................................................................................................................................................. 6
4-1 User Responsibility ................................................................................................................................ 6
4-1-1 User Responsibility .......................................................................................................................... 6
4-2 Installation Procedure ............................................................................................................................ 6
4-3 Perimeter Guarding Special Requirements ........................................................................................... 6
4-4 Minimum Safe Mounting Distance and Mounting Height ....................................................................... 7
4-5 Switch Settings ...................................................................................................................................... 8
4-5-1 Emitter and Receiver Code Switches .............................................................................................. 8
4-5-2 Operating Mode Switches ............................................................................................................... 8
4-6 Electrical Connections ......................................................................................................................... 12
4-6-1 Emitter Electrical Connections ....................................................................................................... 12
4-6-2 Receiver Electrical and Control Connections ................................................................................ 12
4-6-3 Long cable length installation for Receiver .................................................................................... 12
4-6-4 Safety Earth Connections .............................................................................................................. 13
4-7 Machine Control Circuit Connections .................................................................................................. 13
4-7-1 Solid-state Output Connection ....................................................................................................... 13
4-7-2 Connection Method ....................................................................................................................... 13
4-8 Physical Mounting ................................................................................................................................ 17
4-8-1 Installation of Multiple F3SS Units ................................................................................................. 17
4-8-2 Reflective Surface Interference ..................................................................................................... 17
4-8-3 Bracket Mounting Points ................................................................................................................ 19
4-8-4 Alignment ....................................................................................................................................... 19
5 Troubleshooting and Maintenance ......................................................................................................... 20
5-1 Troubleshooting ................................................................................................................................... 20
5-2 Maintenance ........................................................................................................................................ 20
6 Accessories .............................................................................................................................................. 21
6-1 Accessories ......................................................................................................................................... 21
Appendix A —Test Procedures ................................................................................................................. 22
A-1 Tests To Perform ................................................................................................................................. 22
Appendix B —Checkout Procedure .......................................................................................................... 24
B-1 Checkout Procedure Log ..................................................................................................................... 24

1 Significant Features and Requirements 1-1 F3SS General Description
1
1 Significant Features and Requirements
1-1 F3SS General Description
The F3SS single safety light beam is a general purpose presence sensing device. The F3SS is designed spe-
cifically for whole body detection and must not be used for point of operation guarding.
1-2 Meeting Full Compliance
Whether a specific machine application and F3SS installation meets full compliance with safety regulations de-
pends on several items, including the proper application, installation, maintenance and operation of the F3SS.
These items are the sole responsibility of the purchaser, installer and employer.
1-3 Employer Responsibilities
The employer is also responsible for the selection and training of the personnel necessary to properly install,
operate and maintain the machine and its safeguarding systems. The F3SS must only be installed, checked out
and maintained by a qualified person, as “a person or persons who, by possession of a recognized degree or
certificate of professional training, or who, by extensive knowledge, training or experience, has successfully
demonstrated the ability to solve problems relating to the subject matter and work.” (ANSI B30.2-1983)
The machine operator must notify management if the machine, tooling or safety devices are not operating prop-
erly. Never use the machine if it is not in proper working order.
1-3-1 Additional Requirements
The following is a list of additional requirements you must meet before using the F3SS safety light beam.
• Never use the F3SS for point of operation guarding.
• The machine on which the F3SS is installed must be capable of stopping motion anywhere in its stroke or
cycle. Do not use the F3SS on a power press with a full-revolution clutch. This product cannot be used in
Japan as a safety device for pressing or shearing machines provided by article 42 of that law.
• The F3SS does not offer protection from flying objects.
• Do not use the F3SS on any device with inconsistent stopping time or inadequate control devices or
mechanisms.
• Do not use the F3SS where the environment, such as severe smoke, particulate matter, or corrosive
chemicals, may degrade the efficiency of the F3SS.
• When the F3SS is utilized as a safety device, the employer has the responsibility to ensure that all applicable
national, federal, state and local 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...”
• Additional guarding such as mechanical guards may be required if the F3SS does not protect all points of
entry into the hazardous area.
• All brakes and 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 F3SS is functioning properly.
• The test procedures must be performed after any maintenance is performed on the machine controls or the
F3SS. The test procedure (Appendix A) 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. All electrical wiring must be
installed in accordance with local electrical codes and regulations.
• The user must follow all procedures in this manual for proper operation of the F3SS.
• The enforcement of these requirements is beyond OMRON’s control. The employer has the sole
responsibility to follow the preceding requirements and any other procedures, conditions and requirements
specific to his machinery.

2-1 F3SS System Specifications 2 Theory of Operation
2
2 Theory of Operation
2-1 F3SS System Specifications
The F3SS is a long-range, single-beam infrared safety control designed for perimeter and access guarding. In-
terruption of the beam sends a stop signal to the guarded machine. A “redundant” microprocessor design com-
bined with extensive fault mode and effects analysis provides safe, control reliable operation.
A F3SS system consists of one emitter and one receiver. No interconnecting cables or separate control enclo-
sure are required. Maximum distance between emitter and receiver is 60 m(200 ft.).
2-1-1 Technical Specifications*
*1. ESPE(Electro-Sensitive Protective Equipment)
*2. AOPD(Active Opto-electronic Protective Devices)
*Specifications subject to change without notice.
Operating range 0.3-60 m
Number of beams 1 (single beam)
Beam diameter 31 mm
Minimum object resolution Opaque object, ø31 mm or more
Orientation angle Emitter and receiver: ±2.5°maximum, at operating range longer than 3
m (IEC61496-2).
Light source (emission waveform) Infrared LED (880 nm)
Power supply voltage 24 VDC ±10%, ripple (p-p) 5% or less
Rise time after power ON Within 4 seconds
Current consumption Emitter: 170 mA max.
Receiver: 800 mA max.
Operating mode Either of the following modes is selectable by the select switch of the
receiver:
Auto start
Start interlock
Start/restart interlock
Control output PNP transistor output x 2 outputs, load current 250 mA or less (resid-
ual voltage 1V or less) (excluding voltage drop due to cable exten-
sion), ON at light ON.
Protective circuit Output load is short-circuit protected, inverted power supply connec-
tion is protected.
Response time (ON-->OFF) 35 ms or shorter
Ambient temperature 0-55°C at operation and storage (non-icing, non-condensing)
Ambient humidity 35-95% RH at operation and storage (non-condensing)
Resistance to vibration Malfunction and durability: 10-55 Hz, double amplitude 0.7 mm, X, Y
and Z-direction, 20 sweeps
Shock resistance Malfunction and durability: 100 m/s2, X, Y and Z-direction, 1000 times
Protective structure IEC60529 IP65
Connecting method Connect by terminal block on internal board.
Weight (packaged) 2.5kg
Material Case Aluminum
Cap Aluminum
Accessories Mounting hardware, operating instructions, caps for unused conduits
Applicable standard IEC(EN)61496-1 TYPE4 ESPE *1
IEC61496-2 TYPE4 AOPD *2

2 Theory of Operation 2-1 F3SS System Specifications
3
Figure 2-1 Typical Installation
Figure 2-2 System Drawing
Figure 2-3 Indication position
Figure 2-4 Switch and Terminal block position
RECEIVER
SENSING BEAM
EMITTE
R
88.9
93.0
25.4
139.7
32.4
13.0
6.9
PG 9
50.8
2
0
.
5
35.1
.9
47.6
35
27.3
111.8
50.8
55.24
Conduit
Mounting hardware )
G
r
oo
v
e
f
o
r T-n
ut

3-1 Access to Controls 3 Description of Controls
4
3 Description of Controls
3-1 Access to Controls
All switches and terminal blocks located on internal printed circuit assemblies (PCA) are accessed by removing
the four captive screws which hold the emitter and receiver rear covers in place. For ease of access the PCA
will slide approximately 1/2 way out of the housing. A stop is installed to keep the PCA from sliding completely
out of the housing.
On emitter and receiver models two ports, threaded PG9 are provided for entry of cables. One is on the bottom
surface and one is on the rear cover. A threaded plug is provided for the unused port.
3-1-1 Emitter Indicator Lights
The front panel of the emitter has two indicator lights:
3-1-2 Receiver Indicator Lights
The front panel of the receiver has four indicator lights:
The rear panel of the receiver has two diagnostic indicator lights labeled F1 and F2. These lights flash at different
rates to provide troubleshooting assistance. The faults indicated by the number of flashes are detailed in the
troubleshooting section of this manual.
Figure 3-1
Amber Indicates that the emitter has powered-up correctly.
Red Indicates that a emitter fault (DIP switch set to invalid setting or changed after power-up)
was detected after application of power.
Green Run. The infrared beam is not interrupted.
Red Stop. The infrared beam has been interrupted or is out of alignment.
Yellow Interlock. The system has interlocked. The fault must be corrected before the system can be
reset.
Amber Signal Strength. For use as an alignment aid. Status interpreted as follows:
Steady on: Strong Signal Strength
Flashing: Weak Signal Strength
Off: Out of Alignment or Beam Blocked.
A flashing signal strength indicator may be acceptable at long range or when using mirrors
in an installation.
Interlock
indicator (Yellow)
ON-state indicator (Green)
OFF-state indicator (Red)
Receiving level
indicator (Amber)
Receiver
Emitting (=Operating)
indicator (Amber)
Fault indicator (Red)
Emitter

3 Description of Controls 3-1 Access to Controls
5
3-1-3 Receiver Operating Mode Switch
The system can be set for three possible operating modes:
Details on operating mode set-up are given in the installation section.
3-1-4 Emitter and Receiver Code Switches
The infrared beam from a F3SS emitter must be set for one of four possible codes. The beam is coded to avoid
cross talk from adjacent units and improve immunity to weld flash and sources of ambient light.
Both the emitter and receiver must be set to the same code in order to “talk” with one another. See installation
section for switch setting details.
3-1-5 Safety Outputs
Two safety solid-state relay outputs are provided. Each output sources (PNP) up to 0.25 Amps at 24VDC.(volt-
age level varies with supply voltage)
3-1-6 Remote Start Switch (optional)
The Start switch is a normally closed, momentary switch that connects between the Start and Start Return ter-
minals of the receiver terminal block. A valid Start signal is a press and release of the switch. The receiver start
circuit applies about 5mA DC current through the switch contacts and a pulse of approximately 100mA, 20mS
when the switch contacts are initially closed.
- In Automatic Start mode a start switch is not required and the terminals can be left open.
- In Start Interlock and Start/Restart Interlock modes the start switch is required to exit Interlock. In all
modes, a Start switch can be used to reset an interlock caused by a fault, once the fault is removed.
Start/Restart Interlock Upon power-up a start signal (press & release) is required before system can
enter normal operation. If the infrared beam is obstructed, the output relays will
not reset after a beam obstruction is removed until a start signal has been given
to the receiver. This is the mode most often used for perimeter guarding.
Start Interlock Mode Upon power-up a start signal (press & release) is required before system can
enter normal operation. If the infrared beam is obstructed, the output relays will
reset after a beam obstruction is removed, without requiring a start signal.
Automatic Restart Upon power-up the system will enter normal operation. If the infrared beam is
obstructed, the output relays will reset after a beam obstruction is removed, with-
out requiring a start signal.

4-1 User Responsibility 4 Installation
6
4 Installation
4-1 User Responsibility
4-1-1 User Responsibility
The user has the responsibility to perform all maintenance as required by OMRON on the F3SS and to insure
that the guarded machine is properly tested, guarded, and inspected as specified by its manufacturer.
4-2 Installation Procedure
It is recommended that you follow the following steps be taken when installing a F3SS system:
1. Carefully read and follow the information presented in Section 1-Significant Features and Require-
ments of this manual.
2. Calculate the minimum safe mounting distance to place the F3SS away from the point of hazardous
operation. Also, perform calculation to assure that reflective surface interference will not create a
safety hazard.
3. Select and set emitter and receiver to proper transmit code and operating mode.
4. Mount emitter and receiver where determined in step 2.
5. Make proper electrical and control connections.
6. Apply power and align
7. Test F3SS for proper operation. See Checkout and Test Procedure Logs in Appendix A
4-3 Perimeter Guarding Special Requirements
Perimeter guarding is a common application for the F3SS and refers to an installation where a F3SS is generally
positioned around the outside perimeter of a machine or robot to be guarded. This could leave sufficient space
for an operator to stand between the F3SS and the machine.
For perimeter guarding installation, the guarded machine or robot must be wired such that any detected inter-
ruption of the F3SS beam will cause an immediate stop of the hazardous motion. The machine or robot must
only be restarted by the actuation of a start switch. This start switch must be located outside the area of hazard-
ous motion and positioned such that the hazardous area can be observed by the switch operator. This would
prevent a machine from automatically restarting once the obstruction is no longer detected by the F3SS.
WARNING
Please read this information completely before starting the installation procedure. A F3SS should only be
installed, checked out and maintained by a qualified person. It is important that the user be familiar with the
installation requirements, safe mounting distance, controls and features before using the F3SS.
If the F3SS is used as a safety device, the user has the responsibility to insure that applicable national, fed-
eral and local safety rules, codes and regulations are satisfied. In addition, the user should insure that all
machine operators, maintenance personnel, electricians, supervisors, etc. are familiar with and understand
all instructions regarding the use of the F3SS, the machinery on which it is installed and the appropriate
safety regulations.
WARNING
Perimeter guarding installations must not allow a machine or robot to restart automatically. Use a start switch
placed outside and within view of the hazardous area.

4 Installation 4-4 Minimum Safe Mounting Distance and Mounting Height
7
4-4 Minimum Safe Mounting Distance and Mounting Height
The best information available on safe mounting distance and mounting height comes from the preliminary Eu-
ropean standard EN999:1998 sections 6.1.4 and 6.1.5.
Section 6.1.5 suggests that single height beams should only be considered where they are parallel to the ground
and the beam is broken by a person’s body in the upright position.
Where the risk assessment allows a single height beam to be used alone then the minimum distance shall be
calculated using the following formula:
S = (K x T) + C
Where:
S = the minimum distance from the danger zone to the detection point, line, plane or zone;
K = a parameter in mm(inches) per second, derived from data on approach speeds of the body or parts of the
body. It is recommended that a minimum value of 1600mm/sec(63 in/sec) be used. Faster speeds may be war-
ranted. To quote from ANSI standard B11.19-1990, “The value of the hand speed constant, K, has been deter-
mined by various studies and although these studies indicate speed of 1600mm/sec(63 in/sec) to over 2450mm/
sec(100 in/sec), they are not considered conclusive determinations. The user should consider all factors, includ-
ing the physical ability of the operator, when determining the value of K to be used.”
T = the overall system stopping performance(second). T must include the response time of controls, clutches,
braking systems and the F3SS (35 mS) and the time for the machine to cease hazardous motion. Add a per-
centage increase factor as recommended by the machine manufacturer, to allow for deterioration of the clutch
and braking system.
C = an additional distance in mm(inches), based on intrusion towards the danger zone prior to the actuation of
the protective equipment. In the case of the F3SS, 1200mm(48 inches)
Example:
S = (1600mm/sec x 0.250sec) + 1200mm
= 400mm + 1200mm
= 1600mm(63.75in)
When using a single beam, a mounting height of 750mm(29 inches) from the ground or reference plane has
been found in industry to be a practical solution to the problems of inadvertent access from stepping over or
bending under the beam.
When multiple single beams are employed, the following table presents beam mounting heights which have
been found to be practical in application:
WARNING
The proper calculation of the safe mounting distance is an important installation step. Never just install a
F3SS at any convenient location without regard to the safety distance. If the emitter and receiver are
mounted too close to the point of operation hazard, the machine may not stop in time to prevent operator
injury.
Table 4-1 Practical Beam Mounting Heights
Number of Beams Heights above reference plane, such as floor: mm(inches)
2 400, 900(16, 36 )
3 300, 700, 1100(12, 28, 43 )
4 300, 600, 900, 1200(12, 24, 36, 48 )

4-5 Switch Settings 4 Installation
8
Figure 4-1 Installation Example Using Mirrors
4-5 Switch Settings
4-5-1 Emitter and Receiver Code Switches
Both the emitter and the receiver must be set to the same code. Switch settings other than those given below
will result in a fault condition.
4-5-2 Operating Mode Switches
Operating modes are described on page “Receiver Operating Mode Switch” on page 5. Positions 1 & 2 on SW1
and SW2 in the receiver are used to set the operation mode. Switch settings are given below:
Code # Emitter Dip Switch Receiver Dip Switch Position
Position (SW1) (SW1) (SW2)
2343434
AOFF OFF OFF OFF OFF OFF OFF
BOFFONONONOFFONOFF
CON OFF ON OFF ON OFF ON
DON ON OFF ON ON ON ON
Receiver DIP Switch Position (SW1 & SW2)
Operating Mode 12
Automatic Start ON ON
Start Interlock OFF ON
Not Valid ON OFF
Start/Restart Interlock OFF OFF
Emitter
Receiver
Floor
900 mm
(36 in)
400 mm
(16 in)
Mirrors

4 Installation 4-5 Switch Settings
9
When determining which operating mode to select, it may be helpful to consult the functional flow charts which
follow.
Figure 4-2 Start / Restart Interlock Mode Functional Flow Chart
Figure 4-3 Start Interlock Mode Functional Flow Chart
Power Off
Apply Power
Open and then Close
Start Switch Contacts
Machine MPCE Contacts
Close Machine Start
Machine Run
Interrupt Sensing Beam
Machine MPCE Contacts
Open Machine Stop
Sensing Beam Clear
Open and then Close
Start Switch Contacts
Power Supply "Off"
Power-Up Inhibit Condition
Restart Signal
Sensing Beam Clear
Machine Run
Machine Run Condition
Sensing Beam Blocked
Guard Interlock Condition
Sensing Beam Blocked
Guard Interlock Condition
Reset of Restart Interlock
(rerquires Restart before machine will run)
Restart Signal
(resumes Machine Run condition)
F3SS Status
Indicators
Run
Green
Stop
Red
Interlock
Yellow
START/RESTART INTERLOCK FUNCTION
Indicator On Indicator Off
Align
Amber
Steady or Flashing
Off
Off
Off
Off
Off
On
On
On
On
Solid-State
Safety Output
Current Source
Power Off
Apply Power
Open and then Close
Start Switch Contacts
Machine MPCE Contacts
Close Machine Start
Machine Run
Interrupt Sensing Beam
Machine MPCE Contacts
Open Machine Stop
Sensing Beam Clear
Power Supply "Off"
Power-Up Inhibit Condition
Restart Signal
Sensing Beam Clear
Machine Start
Machine Run Condition
Sensing Beam Blocked
F3SS Status
Indicators
Run
Green
Stop
Red
Interlock
Yellow
START INTERLOCK MODE FUNCTION
Indicator On Indicator Off
Align
Amber
Steady or Flashing
Off
Off
Off
Off
On
On
On
On
Solid-State
Safety Output
Current Source
Sensing Beam Blocked
Sensing Beam Clear

4-5 Switch Settings 4 Installation
10
Figure 4-4 Automatic Start Mode Functional Flow chart
Power Off
Apply Power
Machine MPCE Contacts
Close Machine Start
Machine Run
Interrupt Sensing Beam
Machine MPCE Contacts
Open Machine Stop
Sensing Beam Clear
Power Supply "Off"
Power-Up
Sensing Beam Clear
Machine Start
Machine Run Condition
Sensing Beam Blocked
F3SS Status
Indicators
Run
Green
Stop
Red
Interlock
Yellow
AUTOMATIC START FUNCTIONAL FLOW CHART
Indicator On Indicator Off
Align
Amber
Steady or Flashing
Off
On
Off
Off
On
On
On
Solid-State
Safety Output
Current Source
Sensing Beam Blocked
Sensing Beam Clear

4 Installation 4-5 Switch Settings
11
Figure 4-5 Switches and Terminals
3
154 67
2
Receiver
134
2
ON
SW1
134
2
ON
SW2
PCB
Terminal block
Dip switch
Rear Cover
Pulled out PCB
Emitter
134
2
ON
SW1
PCB
Terminal block
Dip Switch
Rear Cover
Pulled out PCB
RTN +24VDC

4-6 Electrical Connections 4 Installation
12
4-6 Electrical Connections
Hint: When wiring to F3SS components, leave the wires just long enough to allow the printed circuit board to be
withdrawn to the extent allowed by its stops. For ease of connection and servicing, OMRON recommends the
use of 18 AWG wire when connecting the F3SS to a machine control system.
4-6-1 Emitter Electrical Connections
The only connections which can be made inside the emitter are those for input power. Terminals for input power
are provided on terminal block J3 at the bottom of the board. The printed circuit boards are labeled for proper
connection.
4-6-2 Receiver Electrical and Control Connections
Control and electrical connections are made inside the receiver on terminal block J5 at the bottom corner of the
board. Terminal positions and functions are as follows:
4-6-3 Long cable length installation for Receiver
For a receiver installed with a cable greater than 9mm(30 feet) in length and a load of less than 50mA. A load
resistor, 1 K ohm, 1 watt (provided in hardware kit) must be installed between the output (+) and output (-) at
the destination point of the solid-state output.
WARNING
All electrical connections must be made by qualified personnel only and in accordance with local and
national electrical codes and regulations. Shut off all power to the machine and the controller before connect-
ing. Never allow any metal filings or chips to enter a F3SS enclosure and possibly impair the function of the
F3SS.
Table 4-2 Emitter Terminal Block
Terminal
Block
Terminal
Name
Function Terminal Block Illustration
J3 +24VDC +24VDC Terminal Block as viewed from top/front
RTN 0V (GND)
Table 4-3 Receiver Terminal block
Terminal
Block
Terminal
Number
Function Terminal Block Illustration
J5 1 Output 1 (+) Terminal Block viewed from top/front
2 Output 1/2 (-)
3 Output 2 (+)
4Start(-)
5Start(+)
6+24VDC
70V(GND)
+24VDCRTN
1 2 3 4 5 6 7

4 Installation 4-7 Machine Control Circuit Connections
13
4-6-4 Safety Earth Connections
Both emitter and receiver must be grounded to maintain EMC immunity. This is accomplished by attaching the
safety earth wire to the inside of the emitter and receiver housing using the supplied ring lug and securing it un-
der the supplied bolt and washer which fastens to a T-nut. A 8mm(5/16 inch) box wrench is helpful in performing
this operation.
4-7 Machine Control Circuit Connections
4-7-1 Solid-state Output Connection
This unit supplies two solid-state outputs. Each output sources (PNP) up to 0.25 Amps at 24VDC.
Each solid-state output is monitored by both internal, independent micro controllers when the outputs are in the
energized state. Monitoring is accomplished by momentarily pulsing the solid-state output off for a short period.
The minimum pulse width is 50 µsec and the maximum is 200 µsec. The pulse width will automatically increase
with an increase in the load capacitance. This test pulse occurs approximately every two minutes. Any circuit
failure will be detected and both outputs will be forced to the de-energized state. T
Solid-state outputs should be connected only to a control reliable, safety rated PLC; or a control reliable safety-
rated machine control system. For a definition of control reliable, see page 1.
4-7-2 Connection Method
The following connection scheme uses both output relays to control the machine. This is the preferred wiring
method for all applications.
In your machine control circuit, locate the two Machine Primary Control Elements (MPCE). The method to arrest
hazardous machine motion will vary depending on the type of machine. Control methodologies include hydraulic,
pneumatic, clutch and mechanical braking systems. Thus there are several variations of MPCE, including relays,
contactor, solenoids and electromechanical valves.
If you are unsure of the proper connection location to use for your machine control system, contact your machine
manufacturer for assistance.
WARNING
Contact the protected machine manufacturer for assistance on how to wire a F3SS to the machine control
circuit. It is critical that the F3SS be properly connected or it will not provide maximum protection to the
machine operators and could result in serious injury. The machine control circuit wiring is the sole responsi-
bility of the employer.

4-7 Machine Control Circuit Connections 4 Installation
14
Figure 4-6 Connection Method(Start Interlock Mode or Start/Restart Interlock Mode)
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u
t
p
u
t
1
/
2
[
]
Arc Su
pp
ressor
3
2These relay contacts must be force guided contacts.
If load is less than 50 mA a resistormust be installed across the load.
See page B-11.
Note: DC power supply must be isolated from the power main and
other devices.
1
Arc suppression devices should only be installed across the coils of
the machine control relays.
Never install Arc Suppression devices directly across the control output
contacts of the F3SS. An arc suppression device installed accros the
contacts may fail with a short circuit and will result in an unsafe
condition.
W
hen usin
g
in Start Interlock Mode or Start/Restart Interlock Mod
e
E1
S1
1
2
1
2
3
3
MP
C
E
2
MP
C
E
1
D
escri
p
tion in s
q
uare
p
arentheses indicates terminal name or terminal num
b
er.
E1: 24VDC power supply (model S82K recommended)
S1: Start switch (for releasing interlock) : NC contact
MPCE1 and MPCE2: DC-driving high sensitivity contactor (model J7AN etc.)
G
round Lu
g
G
round Lu
g

4 Installation 4-7 Machine Control Circuit Connections
15
Figure 4-7 Connection Method(Automatic Start Mode)
Em
i
t
t
t
t
e
r
R
e
R
R
ce
i
v
e
vv
r
Arc Suppressor
A
rc Su
pp
ressor
3
2These relay contacts must be force guided contacts.
If load is less than 50 mA a resistormust be installed across the load.
See page B-11.
Note: DC power supply must be isolated from the power main and
other devices.
1
Arc suppression devices should only be installed across the coils of
the machine control relays.
Never install Arc Suppression devices directly across the control output
contacts of the F3SS. An arc suppression device installed accros the
contacts may fail with a short circuit and will result in an unsafe
condition.
When using in Automatic Start Mode
E1
1
2
1
2
3
3
MP
C
E
2
MP
C
E
1
D
escri
p
tion in s
q
uare
p
arentheses indicates terminal name or terminal num
b
er
.
E1: 24VDC power supply (model S82K recommended)
MPCE1 and MPCE2: DC-driving high sensitivity contactor (model J7AN etc.)
C
o
n
ro
l
o
(
+
)
[
]
C
o
n
t
l
o
u
(
+
)
[
3
]
C
O
M(
-
)
f
r
c
o
c
c
t
ro
l
o
u
t
p
u
t
1
/
2
[
]
G
round Lu
g
G
round Lu
g

4-7 Machine Control Circuit Connections 4 Installation
16
Figure 4-8 Connection Method(Example of connection to Type G9SA-301 Safety Relay Unit [also applicable to category 4])
TH
SA
E1
E2
Emitter Receiver
Control output 1(+) [1]
Control output 2(+) [3]
COM for control output 1/2(-) [2]
Feedback loop
Model F3SS Light ON
Blocked
Reset switch S1
Contacts K1 & K2 a
Contacts K1 & K2 b
Contacts KM1 & KM2 a
Contacts KM1 & KM2 b
PLC input
PLC output
KM3
Description in square parentheses indicates terminal name
or terminal number.
S1:Reset switch (NO contact)
KM1 and KM2:Magnet contactor (model LP1D)
KM3:Solid-state contactor (model G3J)
M:3-phase motor
E1 and E2:24VDC power supply (model S82K)
Note: When connecting the F3SS and G9SA-301 models, do not use the start/restart interlock function incorporated in the F3SS model, only use the
interlock function incorporated in the G9SA-301 model.
Operation Chart
Example of connection to Type G9SA-301 Safety Relay Unit (also applicable to category 4)