EX-20 Photoelectric Sensors Specifications
Specifications for this product appear below.
| Type | Thru-beam | Retroreflective | Diffuse reflective | ||
|---|---|---|---|---|---|
| Front sensing | Side sensing | Side sensing | Side sensing | ||
| Model No. (Note 2) | Light-ON | EX-21A (-PN) | EX-23 (-PN) (Note 3) | EX-29A (-PN) | EX-22A (-PN) |
| Dark-ON | EX-21B (-PN) | EX-29B (-PN) | EX-22B (-PN) |
||
| Sensing range | 1 m 3.281 ft |
2 m 6.562 ft |
30 to 200 mm 1.181 to 7.874 in (Note 4) |
5 to 160 mm 0.197 to 6.299 in (Note 5) with white non-glossy paper (200 x 200 mm) (7.874 x 7.874 in) |
|
| Sensing object | Min. ø2.6 mm ø0.102 in opaque object (Setting distance between emitter and receiver: 1 m 3.281 ft) |
Min. ø3 mm ø0.118 in opaque object (Setting distance between emitter and receiver: 2 m 6.562 ft) |
ø15 mm ø0.591 in or more opaque or translucent object (Note 4, 6) |
Opaque, translucent or transparent object (Note 6) |
|
| Hysteresis | - | 15 % or less of operation distance [50 x 50 mm 1.969 x 1.969 in (EX-22□: 200 x 200 mm 7.874 x 7.874 in, EX-28□: 100 x 100 mm 3.937 x 3.937 in) (with white non-glossy paper)] |
|||
| Repeatability (perpendicular to sensing axis) |
0.05 mm 0.002 in or less | 0.5 mm 0.020 in or less |
0.3 mm 0.012 in or less |
||
| Supply voltage | 12 to 24 V DC ± 10 % Ripple P-P 10 % or less | ||||
| Current consumption | Emitter: 10 mA or less, Receiver: 15 mA or less | 20 mA or less | |||
| Output | NPN open-collector transistor ・Maximum sink current: 50 mA ・Applied voltage: 30 V DC or less (between output and 0 V) ・Residual voltage: 1 V or less (at 50 mA sink current) 0.4 V or less (at 16 mA sink current) PNP open-collector transistor ・Maximum source current: 50 mA ・Applied voltage: 30 V DC or less (between output and +V) ・Residual voltage: 1 V or less (at 50 mA source current) 0.4 V or less (at 16 mA source current) |
||||
| Utilization category | DC-12 or DC-13 | ||||
| Short-circuit protection | Incorporated | ||||
| Response time | 0.5 ms or less | ||||
| Operation indicator | Orange LED (lights up when the output is ON) (thru-beam type: located on the receiver) |
||||
| Stability indicator | Green LED (lights up under stable light received condition or stable dark condition), located on the receiver |
Green LED (lights up under stable light received condition or stable dark condition) | |||
| Sensitivity adjuster | - | Continuously variable adjuster, located on the emitter |
Continuously variable adjuster |
||
| Operation mode switch | - | Located on the receiver | - | ||
| Pollution degree | 3 (Industrial environment) | ||||
| Protection | IP67 (IEC) | ||||
| Ambient temperature | -25 to +55 ℃ -13 to +131 ℉ (No dew condensation or icing allowed), Storage: -30 to +70 ℃ -22 to +158 ℉ |
||||
| Ambient humidity | 35 to 85 % RH, Storage: 35 to 85 % RH | ||||
| Ambient illuminance | Incandescent light: 3,000 lx at the light-receiving face | ||||
| EMC | EN 60947-5-2 | ||||
| Voltage withstandability | 1,000 V AC for one min. between all supply terminals connected together and enclosure | ||||
| Insulation resistance | 20 MΩ, or more, with 250 V DC megger between all supply terminals connected together and enclosure | ||||
| Vibration resistance | 10 to 500 Hz frequency, 3 mm 0.118 in amplitude (20 G max.) in X, Y and Z directions for two hours each | ||||
| Shock resistance | 500 m/s2 acceleration (50 G approx.) in X, Y and Z directions for three times each | ||||
| Emitting element | Red LED (modulated) | ||||
| Peak emission wavelength | 640 nm 0.025 mil |
650 nm 0.026 mil |
680 nm 0.027 mil |
680 nm 0.027 mil |
|
| Material | Enclosure: Polyethylene terephthalate, Lens: Polyalylate | ||||
| Cable | 0.1 mm2 3-core (thru-beam type sensor emitter: 2-core) cabtyre cable, 2 m 6.562 ft long | ||||
| Cable extension | Extension up to total 50 m 164.042 ft is possible with 0.3 mm2, or more, cable (thru-beam type: both emitter and receiver). | ||||
| Weight | Net weight (each emitter and receiver): 20 g approx. Gross weight: 60 g approx. |
Net weight: 20 g approx., Gross weight: 45 g approx. | |||
| Accessories | - | Adjusting screwdriver: 1 pc. |
RF-200 (Reflector): 1 pc. Adjusting screwdriver: 1 pc. |
Adjusting screwdriver: 1 pc. |
|
| Type | Convergent reflective | Narrow-view reflective | ||
|---|---|---|---|---|
| Diffused beam type | Small spot beam type | Long distance spot beam type | ||
| Front sensing | Side sensing | Side sensing | ||
| Model No. (Note 2) | Light-ON | EX-24A(-PN) | EX-26A(-PN) | EX-28A(-PN) |
| Dark-ON | EX-24B(-PN) | EX-26B(-PN) | EX-28B(-PN) | |
| Sensing range | 2 to 25 mm 0.079 to 0.984 in (Conv. point: 10 mm 0.394 in) with white non-glossy paper (50 x 50 mm) (1.969 x 1.969 in) | 6 to 14 mm 0.236 to 0.551 in (Conv. point: 10 mm 0.394 in) with white non-glossy paper (50 x 50 mm 1.969 x 1.969 in), spot diameter ø1 mm ø0.039 in with setting distance 10 mm 0.394 in | 45 to 115 mm 1.772 to 4.528 in with white non-glossy paper (100 x 100 mm 3.937 x 3.937 in), spot diameter ø5 mm ø0.197 in with setting distance 80 mm 3.150 in | |
| Sensing object | Min. ø0.1 mm ø0.004 in copper wire (Setting distance: 10 mm 0.394 in) |
Min. ø0.1 mm ø0.004 in copper wire (Setting distance: 10 mm 0.394 in) |
Opaque, translucent or transparent object (Note 6) (Min. ø1 mm ø0.039 in copper wire at setting distance 80 mm 3.150 in) |
|
| Hysteresis | 15 % or less of operation distance [50 x 50 mm 1.969 x 1.969 in (EX-22□: 200 x 200 mm 7.874 x 7.874 in, EX-28□: 100 x 100 mm 3.937 x 3.937 in) (with white non-glossy paper)] |
|||
| Repeatability (perpendicular to sensing axis) |
0.1 mm 0.004 in or less (Setting distance: 10 mm 0.394 in) |
0.05 mm 0.002 in or less (Setting distance: 10 mm 0.394 in) |
0.3 mm 0.012 in or less |
|
| Supply voltage | 12 to 24 V DC ± 10 % Ripple P-P 10 % or less | |||
| Current consumption | 20 mA or less | |||
| Output | NPN open-collector transistor ・Maximum sink current: 50 mA ・Applied voltage: 30 V DC or less (between output and 0 V) ・Residual voltage: 1 V or less (at 50 mA sink current) 0.4 V or less (at 16 mA sink current) PNP open-collector transistor ・Maximum source current: 50 mA ・Applied voltage: 30 V DC or less (between output and +V) ・Residual voltage: 1 V or less (at 50 mA source current) 0.4 V or less (at 16 mA source current) |
|||
| Utilization category | DC-12 or DC-13 | |||
| Short-circuit protection | Incorporated | |||
| Response time | 0.5 ms or less | |||
| Operation indicator | Orange LED (lights up when the output is ON) (thru-beam type: located on the receiver) |
|||
| Stability indicator | Green LED (lights up under stable light received condition or stable dark condition) |
|||
| Sensitivity adjuster | - | Continuously variable adjuster |
||
| Operation mode switch | - | |||
| Pollution degree | 3 (Industrial environment) | |||
| Protection | IP67 (IEC) | |||
| Ambient temperature | -25 to +55 ℃ -13 to +131 ℉ (No dew condensation or icing allowed), Storage: -30 to +70 ℃ -22 to +158 ℉ |
|||
| Ambient humidity | 35 to 85 % RH, Storage: 35 to 85 % RH | |||
| Ambient illuminance | Incandescent light: 3,000 lx at the light-receiving face | |||
| EMC | EN 60947-5-2 | |||
| Voltage withstandability | 1,000 V AC for one min. between all supply terminals connected together and enclosure | |||
| Insulation resistance | 20 MΩ, or more, with 250 V DC megger between all supply terminals connected together and enclosure | |||
| Vibration resistance | 10 to 500 Hz frequency, 3 mm 0.118 in amplitude (20 G max.) in X, Y and Z directions for two hours each | |||
| Shock resistance | 500 m/s2 acceleration (50 G approx.) in X, Y and Z directions for three times each | |||
| Emitting element | Red LED (modulated) | |||
| Peak emission wavelength | 680 nm 0.027 mil | 650 nm 0.026 mil | 650 nm 0.026 mil | |
| Material | Enclosure: Polyethylene terephthalate, Lens: Polyalylate | |||
| Cable | 0.1 mm2 3-core (thru-beam type sensor emitter: 2-core) cabtyre cable, 2 m 6.562 ft long | |||
| Cable extension | Extension up to total 50 m 164.042 ft is possible with 0.3 mm2, or more, cable (thru-beam type: both emitter and receiver). | |||
| Weight | Net weight: 20 g approx., Gross weight: 45 g approx. | |||
| Accessories | - | Adjusting screwdriver: 1 pc. | ||
Notes:
1) Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +23 ℃ +73.4 ℉.
2) Model Nos. having the suffix "-PN" are PNP output type.
3) Either Light-ON or Dark-ON can be selected by the operation mode switch (located on the receiver).
4) The sensing range and the sensing object of the retroreflective type sensor are specified for the RF-200 reflector. Further, the sensing range is the possible setting range for the reflector. The sensor can detect an object less than 30 mm 1.181 in away. However, if the reflector is set 100 mm 3.937 in or less away, the sensing object should be opaque.
5) In case of using this product at a sensing range of 50 mm 1.969 in or less, take care that the sensitivity adjustment range becomes extremely narrow.
6) Make sure to confirm detection with an actual sensor before use.
