Photoelectrics Special Function Type PMT 20RS, Through-beam * Range: 20 m * Modulated, infrared light * Positive safety, NF P25-362 standard * Make switching function * LED-indication for power supply ON (emitter) and target detected (receiver) * Supply voltage: 24 VDC and 24 VAC * 25 x 65 x 81 mm PC housing, IP 67 * 2 x relay output (connected in series) * NO output Product Description Ordering Key PMT20 R S for safety applications. Protection degree IP67. Screw terminal connection. 25 x 65 x 81 mm plastic housing. PG 13.5 cable gland. Type Relay output Safety Housing W x H x D (mm) Range (Sn) Ordering no. Receiver Ordering no. Emitter 25 x 65 x 81 PG 13.5 cable gland 20 m PMT 20 RS PMT 20 GS Through-beam photoelectric switch. Range up to 20 m. Immune to ambient light. Precise detection through narrow beam. LED-indication. Relay output (NO). 2 relays in series Type Selection Specifications Emitter Specifications Receiver Rated operational volt. (UB) AC: 50 to 60 Hz Rated operational power Light source Light type Optical angle Indication Power supply ON Rated operational volt. (UB) AC: 50 to 60 Hz Rated operational power (Relay ON) Output Contact ratings (AgCdO) Resistive loads AC 1 DC 1 Small inductive loads AC 15 DC 13 Mechanical life Electrical life 24 VDC 20% 24 VAC 20% 2 W (2.5 VA) GaAIAs LED, 880 nm infrared, modulated 2 LED, green Dielectric voltage Optical angle Rated operating distance (Sn) (0 to 5000 lux) Operating frequency Response time OFF-ON ( tON ) ON-OFF ( tOFF ) Power ON delay (tv) Output function Indication Target detected (make swit.) Specifications are subject to change without notice (25.06.99) 24 VDC 20% 24 VAC 20% 2 W (2.5 VA) (micro gap) 3 A/50 VAC 3 A/30 VDC 2 A/50 VAC 3 A/30 VDC 2 x 107 operations 1 x 105 operations at 220 VAC - 3 A resistive load: 360 impulses/h 2 kVAC (rms) (cont./supply) 2 20 m 20 Hz 20 ms 30 ms 300 ms (typ. 100 ms) Make switching LED, yellow 1 PMT 20RS General Specification Environment Installation category Pollution degree Degree of protection Temperature Operating Storage Vibration Shock Rated insulation voltage Housing material Body Front Cover Cable gland Mounting bracket Connection Screw terminal Cable gland Weight Emitter Receiver CE-marking Connection Diagram III (IEC 60664/60664A, 60947-1) 3 (IEC 60664/60664A, 60947-1) IP 67 (IEC 60529, 60947-1) LED -25 to +55C (-13 to +131F) -30 to +80C (-22 to +176F) 10 to 150 Hz, 0.5 mm/7.5 g (IEC 60068-2-6) 2 x 1 m & 100 x 0.5 m (IEC 60068-2-32) 250 V (IEC 60364-4-41) 24 VDC or 24 VAC, 50/60 Hz 30 VDC or 50 VAC. Max. 3 A PC, grey SAN, black PC, black PA, black, reinforced Steel, black Pins 1 - 2 Pins 3 - 4 Pins 5 Power supply Relay output Test output 5 x 2 x 1 mm2 PG 13.5 Accessories 110 g 115 g Yes * MB02 (longer mounting bracket). Please refer to "Accessories". Truth Table Delivery Contents Make switching Object present Yes No LED OFF ON Load Active Nonactive * Photoelectric switch: PMT 20.S * Cable gland * Installation instruction * Mounting bracket * Packaging: Corrugated cardboard (environmentally friendly recycling material) Mode of Operation - Receiver The received signal is amplified by the amplifier (1), and the modulated impulses are synchronized and detected in the pulse detector (2). 2 The modulated impulses are then recognized in the demodulator (3). The output signal from the demodulator controls 2 relays (4 and 5) which are connected in the manner prescribed by the NF P25-362 standard. The centre of the two relay contacts is available as a checkpoint for checking each contact individually. Specifications are subject to change without notice (25.06.99) PMT 20RS Block Diagram - Receiver 4 1 2 3 5 Operation Diagram tv = Power ON delay Power supply Target present Object present Output ON Dimensions Angle bracket for PMT 20.S or 1/2" NPT PMT 20.S Specifications are subject to change without notice (25.06.99) 3