Sensors
SA1A and SA1B: High-Speed, Slim Style Photoelectric Sensors
www.idec.com
USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC
Q-47
Q
Key features of the SA1A and SA1B include:
• Ideal for installations with broad or narrow clearances
• Available with through-beam between the projector and receiver, which
features a sensing range of 6'–6-3/4" (2m)
• Sensing by diffuse-reflected light available, with a sensitivity adjustment for eliminating the interference of
background light
• Through-beam and diffuse-reflected light sensors are featured in
all configurations
• Configurations include NPN or PNP transistor output, with light on or dark
on (senses the presence or absence of an object)
• Adverse results and circuit damage are avoided through protection from
reverse polarity
• High-speed, 1ms response time
• Automatic reset with power-up
• Protection rated IP66
Power Voltage
12V to 24V DC
Operating Voltage
10V to 30V DC, (ripple 10% maximum)
Current Draw
25mA (maximum)
Dielectric Strength
Between live and dead parts: 1,000V AC, 50/60Hz, 1 minute
Insulation Resistance
Between live and dead parts: 20M
Ω (minimum), with 500V DC megger
Operating Humidity
35 to 85% RH (avoid condensation)
Operating Tempera-
ture
–15° to +55°C (avoid freezing)
Storage Temperature
–25° to +65°C
Vibration Resistance
Damage limits: 10 to 55Hz, amplitude 1.5mm p-p, 2 hours in each of 3 axes
Shock Resistance
Damage limits: 500m/s2 (approximately 50G), 10 shocks in each of 3 axes
Extraneous Light
Immunity
Sunlight: 10,000 lux (maximum), Incandescent light: 3,000 lux (maximum) —
defined as incident or unwanted light received by a sensor, unrelated to the presence or
absence of the intended object
Material
Housing and lens: polycarbonate
Degree of Protection
IP66 — IEC Pub 529, sensors rated IP66 are dust-tight, water-resistant, and perform best
when not subjected to heavy particle or water blasts
Cable
Cable type: 0.2mm2; Vinyl cabtyre cable #26 AWG x 6'–6-3/4" (2m) long
Transmitter: 2-core, Receiver: 4-core
Cable Extension
328' (100m) maximum using #22 AWG (0.3mm2) cabtyre cable or better
Weight
Projector: 40g; Receiver: 45g
Narrow/Flat Type
SA1A/B-TN1, -TN2
SA1A/B-DN1, -DN2
SA1A/B-TP1, -TP2
SA1A/B-DP1, -DP2
Detection
Through-beam
Diffuse-reflected
light
Through-beam
Diffuse-reflected
light
Sensitivity
––––
Adjustable
––––
Adjustable
Hysteresis
––––
20% (maximum)
––––
20% (maximum)
Output
NPN transistor open collector
30V DC, 100mA (maximum)
PNP transistor open collector
30V DC, 100mA (maximum)
Light Source
Infrared LED (modulation mode)
LED
On: When output is on
Response
1ms (maximum)
SA1A and SA1B: High-Speed, Slim Style Photoelectric Sensors