miniature 60x31x11mm optical fibre photoelectric switches for remote sensing in confined spaces or detection of small objects n diffuse and separate (through-beam) models n red light emission models for most applications n green light to detect red marks on white backgrounds n coarse and fine sensitivity adjustments n light received and stability leds n fast response time C 1ms n switch selection of light on/dark on (no/nc) output n protection up to ip66 n fine tube types can be bent for positioning n fibres may be cut to suit applications n logic output (npn models) n self-diagnostic (alarm) output models with off-delay timer n short-circuit protection compact dc optical fibre photoelectric switches pf options and ordering codes specifications pf a n p f a n t C g compact optical fibre photoelectric switches red light emission g green light emission without timer and diagnostic output t with timer and diagnostic output amplifier npn output type p pnp output type type photoelectric switch photoelectric switch with timer and self-diagnosis models pfa-n pfa-ng pfa-p pfa-pg pfa-nt pfa-ntg pfa-pt pfa-ptg emission red green red green red green red green supply voltage 10-30vdc including peak ripple max. consumption 50ma response time 1ms operation/reset 1ms operation, 30 to 70ms reset output type npn pnp npn pnp output state light on/dark on (no/nc) selectable by switch load current 100ma logic output 1.5ma C 1.5ma C self-diagnostic output current C 50ma residual output voltage 1.1v il=100ma connection cable 2 metres long, 3-wire 2 metres long, 4-wire electrical protections against short circuit (autoreset) - polarity reversal - inductive loads led status indicators light received - red led (light), stability - green led (stab.) sensitivity adjustment coarse - 1 turn trimmer (sens.), fine - 1 turn trimmer (fine) insulation resistance > 20 mohm to 500 vdc dielectric strength 1000vac 50/60hz for 1 min housing material abs protection degree iec ip66 (1) operating temperature -25?c +55?c (avoid ice on amplifier) (2) storage temperature -40? +70?c interference by artificial light 3000 lux interference by sunlight 10000 lux ambient humidity 35-85% r.h. operating, 35-95% r.h. storage vibration 10 to 55 hz, 1.5mm double amplitude (x, y, z direction, respectively 2 hours) shock 500m/s 2 (approx. 50g) 3 times each in x, y and z directions weight (approx.) 100g (1) 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. 3 year guarantee
pf specifications dimensions (mm) type diffuse separate (through-beam) models pf/d0-20 pfu/d0-20 pf/d0-21 p2f-df pf/t0-20 pfu/t0-20 pf/t0-21 p2f-sf style standard fine head fine stainless tube standard fine head fine stainless tube sensing range 80mm 30mm 20mm 200mm-1.2m (1) 100mm-400mm (1) 60mm detectable object transparent and opaque opaque ?1mm-3mm opaque ?0.5mm head thread size m6 m3 m4 m3 fibre size ?1mm active fibre ?0.5mm active fibre ?0.5mm active fibre ?1mm active fibre ?0.5mm active fibre ?0.5mm active fibre fibre length 2 metres (2) materials fibre: pmma resin, sheath: polyester operating -25? to +60?c -40? to +70?c -25? to +60?c -40? to +70?c (1) sensing range 1.2m for pf/t0-20 with pfl-1 lens (2) longer fibres possible C contact imo for availability 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 unit C diffuse type C standard head pf-d0-20 pfu/d0-20 (high flexible cable) ? fibre unit C diffuse type C fine stainless-steel tube head p2f-df lens: pfl-1 supplied separately (set of two) fibre cutter pxc C supplied with all fibres ? fibre unit C separate (through-beam) type - standard head pf-t0-20 pfu/t0-20 (high flexible cable) ? fibre unit C diffuse type C fine head pf/d0-21 ? fibre unit C separate (through-beam) type - fine head pf/t0-21 ? fibre unit C separate (through-beam) type C fine stainless- steel tube headp2f-sf 2-?1 13 17 2000 ?4 m6 (p=0.75) ?2.2 ?1 14 11 2000 m3 (p=0.45) m4 (p=0.7) ?2.2 2-?0.5 80 15 12 m3 (p=0.5) 2000 10 15 0.5~1 ?1.5 ?1 ?2.5 ?3.5 ?2.2 ?0.5 m3 (p=0.5) 80 15 8 10 ?0.9 pfl-2 net weight : 2 light emitting hole pfl-1 net weight : 2g p2f-s m4 (p=0.7) 12 7 p2f-s m4 (p=0.7) 12 10 2 ?4 fibre 8 23.5 ?3.6 2000 15 0.5~1 ?2.2 ?3.5 ?1 ?3 45 right-angle beam adapter pfl-2 supplied separately (set of two) additional fibres available C see following pages C contact imo for availability m m 2.5 3 11 m 3 2 x ?1 length 2 m useful ? fibre 0.5mm 2 fibre attachment (supplied) m 2.5 m 3 3 11 ? 1 length 2 m useful ? fibre 0.5mm 2 fibre attachment (supplied)
wiring connections timing diagrams pfa-n pfa-ng pfa-nt pfa-ntg pfa-p pfa-pg pfa-pt pfa-ptg indication lamps ? 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. 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. n 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. self-diagnosis function timing diagram (light-on) quality of light received relationship between quantity of light received, output and indication lamps pfa-n, pfa-p, pfa-ng, pfa-pg output transistor light incident indicator lamp stable operating level indication lamp quantity of light received note: the +v, output and ov (gnd) connections are also available on the top of the amplifier in the form of terminals, for oper ation check (test) purposes. pfa-n, pfa-p, pfa-ng, pfa-pg ? light on mode transistor on when light is incident. ? dark on mode transistor on when light is interrupted. pfa-nt, pfa-pt, pfa-ntg, pfa-ptg ? light on mode transistor on when light is incident. ? dark on mode transistor on when light is interrupted. pfa-nt, pfa-pt, pfa-ntg, pfa-ptg output transistor light-level increasing light-level decreasing light-level increasing light-level decreasing self-diagnosis output light incident indication light-level increasing lamp light-level decreasing stable operating level indication lamp quantity of light received 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) if the terminology no and nc is used, the following conversion table applies: detection mode dark on light on diffuse nc no retro-reflective no nc through beam no nc light is incident light is interrupted indicator (red) output transistor load (relay) output voltage (logic circuit) Cnpn only on off on off on off h l light on dark on light on dark on light on dark on stable light stable light receiving 15 15 interrupting area %% area stable stable light differ- light receiving 15 ential 15 inter- area % travel % rupting area photoelectric switch-circuit light received indicator stable operating level indicator red green 1.5 ma brown + load black blue ov dc 10-30v photoelectric switch-circuit light received indicator stable operating level indicator red green 1.5 ma brown + load black blue ov dc 10-30v orange *1 *1: self-diagnosis function output output output alarm photoelectric switch-circuit light received indicator stable operating level indicator red green brown + load black blue dc 10-30v photoelectric switch-circuit light received indicator stable operating level indicator red green brown + load black blue ov dc 10-30v orange *1 *1: self-diagnosis function output alarm output output ov light is incident light is interrupted indicator (red) output transistor load (relay) output voltage (logic circuit) Cnpn only on off on off on off h l light is incident light is interrupted indicator (red) output transistor load (relay) output voltage (logic circuit) Cnpn only on off on off on off h l light is incident light is interrupted indicator (red) output transistor load (relay) output voltage (logic circuit) Cnpn only on off on off on off h l stable light receiving area operating level reset level on on lights up lights up goes out goes out goes out goes out lights up lights up stable operating level indication lamp operating indication lamp self-diagnosis output detecting output off off on on off off stable light interupting area 0.3s* 0.3s* * delay time 115% 100% 77% 66% time on off off on lights up goes out lights up goes out lights up goes out lights up lights up goes out lights up light on light on dark on dark on light on dark on l on or d on l on or d on light on dark on light on dark on on off on off off on off on on off on on off on lights up off on goes out lights goes out lights lights goes out lights 115%100% 77% 66% operating reset level level reset operating level level approx. 40 ms approx. 40 ms pf
setting-up procedure dimensions (mm) optical axis adjustment n 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. n 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. a fine and a coarse sensitivity adjustment permits accurate adjustment. n procedure of sensitivity adjustment ? when carrying out a normal detection, set both dials at the maximum sensitivity value by turning them fully clockwise. carry out the sensitivity adjustment as follows. ? when a photoelectric switch is used for detection of an object with inadequate contrast, sensitivity adjustment should be carried out. sensitivity adjustment rail type dimension a 7.5mm high 3.5 15mm high 11 mounting bracket 2 supplied coarse adjustment dial fine adjustment dial setting position of the coarse adjustment dial setting position of the fine adjustment dial a a b b state of detected object coarse adjustment dial fine adjustment dial object 1. set the fine adjustment dial at the central position. 2. set the coarse adjustment dial at approximate operating position. 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. object 11 31.3 12 7 1 2 3 4 5 13.3 6 cord length 2m/0.2mm 7 7.2 8.1 7.4 ?4 2 10.6 maximum mounting screw torque 1nm 16 17.6 5 3.2 3.2 35.4 4.5 a 34.5 ?3.2 5 20 3 35 mm-wide iec standard rail or mounting bracket (supplied) ?3.2 5 11 6.2 3.5 (66.5) 49.2 11.1 7.9 light light-receiving indicator stab stable light level indicator a fine fine sensitivity adjustment ? sens coarse sensitivity adjustment ? logic changeover switch ? operation check terminals pf
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