Compact DC Optical Fibre Photoelectric Switches Miniature 60x31x11mm optical fibre photoelectric switches for remote sensing in confined spaces or detection of small objects ■ Diffuse and separate (through-beam) models ■ Red light emission models for most applications ■ Green light to detect red marks on white backgrounds ■ Coarse and fine sensitivity adjustments ■ Light received and stability LEDs ■ Fast response time – 1ms ■ Switch selection of light on/dark on (NO/NC) output ■ Protection up to IP66 ■ Fine tube types can be bent for positioning ■ Fibres may be cut to suit applications ■ Logic output (NPN models) ■ Self-diagnostic (alarm) output models with off-delay timer ■ Short-circuit protection PF 3 Year Guarantee Options and ordering codes P Compact optical fibre photoelectric switches F A P F Amplifier A NPN output type N PNP output type P – N T G — Red light emission G Green light emission — Without timer and diagnostic output T With timer and diagnostic output PRICE INFORMATION AND ORDERING Specifications Type Models Emission Supply voltage Max. consumption Response time Output type Output state Load current Logic output Self-diagnostic output current Residual output voltage Connection cable Electrical protections LED status indicators Sensitivity adjustment Insulation resistance Dielectric strength Housing material Protection degree Operating temperature Storage temperature Interference by artificial light Interference by sunlight Ambient humidity Vibration Shock Weight (approx.) PFA-N red Photoelectric switch PFA-NG PFA-P green red Photoelectric switch with timer and self-diagnosis PFA-PG PFA-NT PFA-NTG PFA-PT PFA-PTG green red green red green 10-30VDC including peak ripple ≤50mA ≤1ms operation/reset ≤1ms operation, 30 to 70ms reset NPN PNP NPN PNP light on/dark on (NO/NC) selectable by switch 100mA 1.5mA – 1.5mA – – 50mA 1.1V IL=100mA 2 metres long, 3-wire 2 metres long, 4-wire against short circuit (autoreset) - polarity reversal - inductive loads light received - red LED (light), stability - green LED (stab.) coarse - 1 turn trimmer (sens.), fine - 1 turn trimmer (fine) > 20 MOhm to 500 VDC 1000VAC 50/60Hz for 1 min ABS IEC IP66(1) -25˚C +55˚C (avoid ice on amplifier)(2) -40˚ +70˚C 3000 lux 10000 lux 35-85% r.h. operating, 35-95% r.h. storage 10 to 55 Hz, 1.5mm double amplitude (x, y, z direction, respectively 2 hours) 500m/s2 (approx. 50G) 3 times each in X, Y and Z directions 100g Protection is IP50 when amplifier is used with fibres P2F-DF or P2F-SF. (2) Operating temperature range is -25˚C to +50˚C when amplifiers are mounted close together e.g. on DIN rail. (1) PF Specifications diffuse Type Models separate (through-beam) PF/D0-20 PFU/D0-20 PF/D0-21 P2F-DF PF/T0-20 PFU/T0-20 PF/T0-21 P2F-SF standard fine head fine stainless tube standard fine head fine stainless tube 30mm 20mm 200mm-1.2m(1) 100mm-400mm(1) Style 80mm Sensing range transparent and opaque Detectable object M6 Head thread size M3 ø1mm active fibre Fibre size ø0.5mm active fibre 60mm opaque ø1mm-3mm opaque ø0.5mm M4 ø0.5mm active fibre M3 ø1mm active fibre ø0.5mm active fibre ø0.5mm active fibre 2 metres(2) Fibre length fibre: PMMA resin, sheath: polyester Materials -25˚ to +60˚C Operating (1) Sensing range 1.2m for PF/T0-20 with PFL-1 lens -40˚ to +70˚C -25˚ to +60˚C -40˚ to +70˚C (2) Longer fibres possible – contact IMO for availability Dimensions (mm) • Fibre unit – separate (through-beam) type - standard head PF-T0-20 PFU/T0-20 (high flexible cable) M4 (P=0.7) ø2.2 M3 (P=0.45) ø2.2 ø4 M6 (P=0.75) • Fibre unit – diffuse type – standard head PF-D0-20 PFU/D0-20 (high flexible cable) 11 13 2-ø1 17 ø1 2000 M3 MM 2.5 2 x Ø1 Length 2 m Useful ø fibre 0.5mm 11 3 2000 • Fibre unit – separate (through-beam) type - fine head PF/T0-21 • Fibre unit – diffuse type – fine head PF/D0-21 M 2.5 14 3 Ø1 M3 Length 2 m Useful ø fibre 0.5mm 11 2 fibre attachment (supplied) 2 fibre attachment (supplied) • Fibre unit – separate (through-beam) type – fine stainlesssteel tube headP2F-SF 15 2000 15 0.5~1 Lens: PFL-1 supplied separately (set of two) 12 80 15 0.5~1 2000 Right-angle beam adapter PFL-2 supplied separately (set of two) 10 12 2 ø3.6 ø4 7 ø0.5 15 10 8 10 80 ø2.2 ø3 ø0.9 ø2.2 ø3.5 ø1 ø1.5 ø2.5 12 2-ø0.5 ø1 M3 (P=0.5) M3 (P=0.5) ø3.5 • Fibre unit – diffuse type – fine stainless-steel tube head P2F-DF Light emitting hole M4 (P=0.7) PFL-1 M4 (P=0.7) P2F-S Net weight : 2g PFL-2 Net weight : 2 Fibre cutter PXC – supplied with all fibres 8 23.5 45 P2F-S Note: PFL-1 consists of two lenses, one to be fitted to the light source fibre and one to the receiver fibre. (Only to be used with fibre PF/D0-20.) PFL-2 consists of two right-angle beam adaptors, one to be fitted to either the light source fibre or the receiver fibre or both. (Only to be used with fibre P2F-S.) Fibre Additional fibres available – see following pages – contact IMO for availability PRICE INFORMATION AND ORDERING PF Wiring connections Light received indicator Stable operating level indicator Red Light received indicator Brown + 1.5 mA Green Red PFA-N PFA-NG Load Photoelectric switch-circuit Black Brown + Output Black Green Load Stable operating level indicator Red Green Photoelectric switch-circuit Light received indicator Brown + 1.5 mA Output Black DC 10-30V Blue OV Blue OV Light received indicator PFA-P PFA-PG Photoelectric switch-circuit DC 10-30V Output Stable operating level indicator PFA-NT PFA-NTG Load Orange *1 Alarm Blue OV Stable operating level indicator Red Brown + Green DC 10-30V PFA-PT PFA-PTG Output Black Photoelectric switch-circuit Load Orange *1 Alarm DC 10-30V Blue OV *1: Self-diagnosis function output *1: Self-diagnosis function output Note: the +V, output and OV (gnd) connections are also available on the top of the amplifier in the form of terminals, for operation check (test) purposes. Timing diagrams PFA-N, PFA-P, PFA-NG, PFA-PG PFA-NT, PFA-PT, PFA-NTG, PFA-PTG Indication lamps • “LIGHT ON” mode Transistor ON when light is incident. • “DARK ON” mode Transistor ON when light is interrupted. • “LIGHT ON” mode Transistor ON when light is incident. • “DARK ON” mode Transistor ON when light is interrupted. Light is incident Light is interrupted Light is incident Light is interrupted Light is incident Light is interrupted Light is incident Light is interrupted Indicator (Red) ON OFF ON OFF Indicator (Red) ON OFF Indicator (Red) ON OFF Indicator (Red) Approx. 40 ms Approx. 40 ms Output transistor ON OFF Output transistor ON OFF Output transistor ON OFF Output transistor ON OFF Load (Relay) ON OFF Load (Relay) ON OFF Load (Relay) ON OFF Load (Relay) ON OFF H L Output voltage (Logic circuit) –NPN only H L Output voltage (Logic circuit) –NPN only H L Output voltage (Logic circuit) –NPN only H L Output voltage (Logic circuit) –NPN only Self-diagnosis function The self-diagnosis function warns of the decrease in the light value received due to the deflection of the optical axis or dirty lens surfaces. • Incident light indicator (red “Light” lamp) Lights upon exposure to incident light in either the LIGHT-ON or DARK-ON operating mode. • Stable operating level indicator (green “Stab” lamp) Indicates that the amount of light or shade for detection by the sensor is at a stable and suitable level for operation. This lamp lights up when the quantity of light received has exceeded + 15% of the operating level or it has been lowered below -15% of the reset level. Relationship between quantity of light received, output and indication lamps ■ Time chart of the self-diagnosis function The self-diagnosis output is OFF when the quantity of light received is between the range 66 to 115% of the operating level due to the deflection of the optical axis or buildup of dirt and this situation as continued over the delay time. PFA-N, PFA-P, PFA-NG, PFA-PG Output transistor LIGHT ON ON OFF DARK ON OFF ON LIGHT ON Lights up Goes out DARK ON Lights up Goes out Light incident indicator lamp Self-diagnosis function timing diagram (LIGHT-ON) Stable operating level indication lamp Quality of light received DARK ON Stable light receiving area 115% 100% 77% 66% Lights up Goes out Lights up Lights up Goes out Lights up Stable light receiving area Quantity of light received Operating level Reset level 15 % Stable light 15 interrupting % area PFA-NT, PFA-PT, PFA-NTG, PFA-PTG Stable light interupting area Output transistor Time ON Detecting output LIGHT ON OFF ON Self-diagnosis output 0.3S* 0.3S* ON OFF Goes out Operating indication lamp Lights up LIGHT ON light-level increasing DARK ON light-level decreasing DARK ON OFF ON ON OFF OFF ON OFF Self-diagnosis output ON OFF ON LIGHT ON ON OFF ON DARK ON ON OFF ON Goes out Lights up Lights up Goes out Goes out * Delay time If the terminology NO and NC is used, the following conversion table applies: Detection mode LIGHT ON OFF Lights up Stable operating level indication lamp light-level increasing light-level decreasing dark on light on Diffuse NC NO Retro-reflective NO NC Through beam NO NC NO: when detecting a target, the output switches to the ON state (conduction) NC: when detecting a target, the output switches to the OFF state (isolation) Lights up OFF Light incident indication light-level increasing lamp light-level decreasing L ON OR D ON Stable operating level indication lamp LIGHT ON Lights Goes out DARK ON Lights Goes out ON L ON OR D ON Stable light receiving area Quantity of light received Differ15 ential % travel 115%100% Goes out Lights Lights Stable light 15 inter% rupting area 77% 66% LIGHT ON Operating level Reset level DARK ON Reset level Operating level PF Setting-up procedure Optical axis adjustment ■ Separate (through-beam) type • Position the tips of the optical fibres so that they face each other and encompass the sensing position. • The incident light indication lamp lights (red) when the optical axes are aligned. Check also that the stable operating level indicator (green) lights. ■ Diffuse type • Visually align the sensor position • The characteristics of detection depend on the material and shape of the target object. • Upon detection of the target object, the incident light indication lamp lights (red). Check also that the stable operating level indicator (green) lights. Sensitivity adjustment A fine and a coarse sensitivity adjustment permits accurate adjustment. ■ Procedure of sensitivity adjustment • When carrying out a normal detection, set both dials at the maximum sensitivity value by turning them fully clockwise. • When a photoelectric switch is used for detection of an object with inadequate contrast, sensitivity adjustment should be carried out. Carry out the sensitivity adjustment as follows. State of detected object Coarse adjustment dial Object Fine adjustment dial 1. Set the fine adjustment dial at the central position. 2. Set the coarse adjustment dial at approximate operating position. Coarse adjustment dial a Setting position of the coarse adjustment dial b Fine adjustment dial Object 3. Obtain the operating position at the time of presence or absence of the object to be detected by means of the fine adjustment dial, and set at the middle position. a Setting position of the fine adjustment dial b Dimensions (mm) PRICE INFORMATION AND ORDERING 1 7 2 7.2 3 8.1 7.4 4 6 5 ø4 13.3 Cord length 2m/0.2mm2 (66.5) 11 6.2 3.5 7 49.2 Rail type Dimension A ø3.2 7.5mm high 3.5 15mm high 11 Mounting bracket supplied 2 5 11 12 5 ø3.2 20 35 mm-wide IEC standard rail or Mounting bracket (supplied) 34.5 5 3.2 16 10.6 3 3.2 35.4 maximum mounting screw torque 1Nm 17.6 4.5 A 31.3 11.1 ➀ Light Light-receiving indicator ➁ Stab Stable light level indicator ➂ Fine Fine sensitivity adjustment ➃ Sens Coarse sensitivity adjustment ➄ Logic changeover switch ➅ Operation check terminals 7.9