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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/s

2

, 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

Summary of Contents for F3SS

Page 1: ...Single Beam Safety Sensor INSTRUCTION MANUAL Cat No SCEE711 E2 1 INSTRUCTION MANUAL Single Beam Safety Sensor F3SS Series Cat No SCEE711 E2 1...

Page 2: ...tandard 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 takin...

Page 3: ...ements 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 E...

Page 4: ......

Page 5: ...e 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 environ...

Page 6: ...er 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 se...

Page 7: ...nstallation Figure 2 2 System Drawing Figure 2 3 Indication position Figure 2 4 Switch and Terminal block position RECEIVER SENSING BEAM EMITTER 88 9 93 0 25 4 139 7 32 4 13 0 6 9 PG 9 50 8 20 5 35 1...

Page 8: ...led 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 Figur...

Page 9: ...uit 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 require...

Page 10: ...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 caus...

Page 11: ...g 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 ce...

Page 12: ...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 Pos...

Page 13: ...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...

Page 14: ...ntacts 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 Ye...

Page 15: ...11 Figure 4 5 Switches and Terminals 3 1 5 4 6 7 2 Receiver 1 3 4 2 ON SW1 1 3 4 2 ON SW2 PCB Terminal block Dip switch Rear Cover Pulled out PCB Emitter 1 3 4 2 ON SW1 PCB Terminal block Dip Switch R...

Page 16: ...s 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 har...

Page 17: ...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 F...

Page 18: ...ression 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...

Page 19: ...uld 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 a...

Page 20: ...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 s...

Page 21: ...re is no optical path corresponding to the dashed line That could be done with the installation shown in Figure 4 10 Figure 4 10 Preferred Mounting Orientation This installation doesn t allow either r...

Page 22: ...tected because of reflection Reflective surfaces interference may also appear above and below the sensing beam Figure 4 14 Worst Case Alignment example This shows minimum distance from reflective surf...

Page 23: ...r has an amber color visible alignment indicator which provides the following informa tional Note Where used with mirrors it is recommended to use the optional laser alignment tool F39 LLK to ease ali...

Page 24: ...emitter and receiver and can affect operation of the F3SS A periodic cleaning will prevent these problems Clean the lenses with a mild detergent or glass cleaner Use a clean soft lint free cloth or wi...

Page 25: ...s for F3SS Model Number Description F39 MSG Front Surface Glass Mirror F39 MSS Polished Stainless steel Mirror F39 LM45 Bracket for mounting above mirrors at 45 angle F39 LLK Laser Alignment Tool F39...

Page 26: ...nt of hazardous opera tion Pass Fail 4 Check for signs of external damage to the F3SS the machine and the electrical cables and wiring If any damage is found lockout the machine and report to the supe...

Page 27: ...hinery did not function exactly as described in the Test Procedure do not operate the machinery If the machine safety devices braking systems and controls do not operate properly they cannot stop haza...

Page 28: ...Fail 2 Verify that the mounting distance of the F3SS is equal to or greater than the minimum safe distance from the point of operation Pass Fail 3 Determine that all access to the danger point not pro...

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