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Business > Industrial Devices > Automation Controls Top > FA Sensors & Components > Sensors > Light Curtains / Safety Components > Compact Type 4 Safety Beam Sensor ST4 > Specifications

Compact Type 4 Safety Beam Sensor ST4

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Specifications

Specifications

Sensor heads

Type	Cable length 0.2 m 0.656 ft		Cable length 1 m 3.281 ft
Type		With emission amount adjuster		With emission amount adjuster
Model No.	ST4-A1-J02	ST4-A1-J02V	ST4-A1-J1	ST4-A1-J1V
Applicable standard (Note 2)	IEC 61496-1/2 (JIS B 9704-1/2 / UL 61496-1/2) (Type 4), ISO 13849-1:2015 (Category 4, PLe), JIS B 9705-1 (Category 4), IEC 61508-1 to 3 (SIL3), IEC 62061 (SIL3), JIS C 0508-1 to 3 (SIL3), UL 1998, OSHA 1910.212, OSHA 1910.217 (C), ANSI B11.1 to B11.19, ANSI/RIA R15.06, ANSI/ISA S84.01 (SIL3)
CE marking directive compliance	Machinery Directive, EMC Directive, RoHS Directive
Operating range	0.1 to 15 m 0.328 to 49.213 ft (Note 3)
Sensing object	φ9 mm φ0.354 in or more opaque object
Effective aperture angle (EAA)	±2.5° or less for operating range exceeding 3 m 9.843 ft (required by IEC 61496-2 / UL 61496-2)
Supply voltage	Supplied from controller
Current consumption	Emitter: 11 mA or less, Receiver: 9 mA or less
Beam interruption indicator (Note 4)	Red LED (lights up when the beam is interrupted or lock out, lights off during reception)
Beam emission indicator	Green LED (lights up during beam emission, lights off during emission halt)
Stable incident beam indicator	Green LED (lights up under stable light received condition, lights off under unstable light received condition)
Degree of protection	IP67 (IEC)
Ambient temperature	−10 to +55 ℃ +14 to +131 ℉ (No dew condensation or icing allowed), Storage: −25 to +70 ℃ −13 to +158 ℉
Ambient humidity	30 to 85 % RH, Storage: 30 to 95 % RH
Ambient illuminance	Incandescent lamp: 3,500 Lx or less at the light-receiving face
Voltage withstandability	1,000 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance	20 MΩ or more with 500V DC megger between all supply terminals connected together and enclosure
Vibration resistance	10 to 55 Hz frequency, 0.75 mm 0.030 in double amplitude or maximum acceleration 90 m/s2 in X, Y and Z directions for two hours each
Shock resistance	300 m/s² acceleration in X, Y and Z directions three times each
Emitting element	Infrared LED (Peak emission wavelength: 870 nm 0.034 mil)
Material	Enclosure: PBT (Polybutylene terephthalate), Lens: Acrylic, Indicator cover: Acrylic
Cable	Shielded cable with connector, 0.2 m 0.656 ft long		Shielded cable with connector, 1 m 3.281 ft long
Cable extension	Extention up to total 50 m 164.042 ft is possible for both emitter and receiver with exclusive cable.
Weight (Total of emitter and receiver)	Net weight: 45 g approx. Gross weight: 60 g approx.		Net weight: 100 g approx. Gross weight: 140 g approx.

Notes:1) Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +20℃ +68℉.

2) Complies with those standards only when the sensor head is used in combination with the controller ST4-C11 / ST4-C12EX.

3) The operating range is the possible setting distance between the emitter and the receiver. It can detect sensing object of less than 0.1 m 0.328 ft away.

4) Shows light interruption information between the emitter and the receiver with the same address. It does not show OSSD output.

Notes:1)	Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +20℃ +68℉.
2)	Complies with those standards only when the sensor head is used in combination with the controller ST4-C11 / ST4-C12EX.
3)	The operating range is the possible setting distance between the emitter and the receiver. It can detect sensing object of less than 0.1 m 0.328 ft away.
4)	Shows light interruption information between the emitter and the receiver with the same address. It does not show OSSD output.

Controllers

Type		Controller	High-functional controller
Model No.		ST4-C11	ST4-C12EX
Applicable sensor head		ST4-A□
	No. of series connections	Interference prevention possible when up to a maximum of 6 sets are connected (When the maximum of 3 controllers are connected together, interference prevention is possible for up to 18 sets)
Applicable standards (Note 2)		IEC 61496-1/2 (JIS B 9704-1/2 / UL 61496-1/2) (Type 4), ISO 13849-1:2015 (Category 4, PLe), JIS B 9705-1 (Category 4), IEC 61508-1 to 3 (SIL3), IEC 62061 (SILCL3), JIS C 0508-1 to 3 (SIL3), UL 1998, OSHA 1910.212, OSHA 1910.217 (C), ANSI B11.1 to B11.19, ANSI/RIA R15.06, ANSI/ISA S84.01 (SIL3)
CE marking directive compliance		Machinery Directive, EMC Directive, RoHS Directive
Supply voltage		24 V DC ⁺¹⁰₋₁₅ % Ripple P-P 10 % or less
Current consumption		100 mA or less (excluding sensor head ST4-A□)	120 mA or less (excluding sensor head ST4-A□)
Control outputs (OSSD1, OSSD2) (Note 3)		PNP open-collector transistor / NPN open-collector transistor, Dual output x 1 system (Set using output polarity selection switch) <PNP output> • Maximum source current: 200 mA • Applied voltage: same as the supply voltage (between control output and +V) • Residual voltage: 2.5 V or less (at 200 mA source current) • Leakage current: 200 μA or less (including power OFF condition) • Maximum load capacity: 1 μF (from no-load to max. source current) • Load wiring resistance: 3 Ω or less (between control output and load) <NPN output> • Maximum sink current: 200 mA • Applied voltage: same as the supply voltage (between control output and 0 V) • Residual voltage: 2.0 V or less (at 200 mA sink current) • Leakage current: 200 μA or less (including power OFF condition) • Maximum load capacity: 1 μF (from no-load to max. sink current) • Load wiring resistance: 3 Ω or less (between control output and load)
	Operation mode	ON when all beams of the connected ST4-A□s are received OFF when one or more beams of the connected ST4-A□s are interrupted (except during muting / override when ST4-C12EX is used) OFF during lockout
	Protection circuit	Incorporated
Response time		OFF response: 25 ms or less, ON response: 90 ms or less (auto reset) / 140 ms or less (manual reset)
Auxiliary outputs (Note 3)		PNP open-collector transistor / NPN open-collector transistor (Set using output polarity selection switch) ST4-C11: one output ST4-C12EX: four outputs <PNP output> • Maximum source current: 100 mA • Applied voltage: same as the supply voltage (between auxiliary output and +V) • Residual voltage: 2.5 V or less (at 100 mA source current) <NPN output> • Maximum sink current: 100 mA • Applied voltage: same as the supply voltage (between auxiliary output and 0 V) • Residual voltage: 2.0 V or less (at 100 mA sink current)
	Operation mode	OFF when all beams of the connected ST4-A□s are received ON when one or more beams of the connected ST4-A□s are interrupted	<Auxiliary output 1> ON when muting function is invalid OFF when muting function is valid <Auxiliary output 2> ON when override function is invalid OFF when override function is valid <Auxiliary output 3> ON when muting lamp is in normal condition OFF when muting lamp is in abnormal condition <Auxiliary output 4> Negative logic of the control outputs (OSSD1, OSSD2)
	Protection circuit	Incorporated
Muting lamp output (Note 3)		-	Available muting lamp: 24 V DC, 1 to 10 W
	Protection circuit	Incorporated
PFH_D (Note 4) / MTTF_D (Note 5)		Refer to the following table / More than 100 years
Degree of protection		Enclosure: IP40 (IEC), Terminal: IP20 (IEC)
Ambient temperature		−10 to +55 ℃ +14 to +131 ℉ (No dew condensation or icing allowed) Storage: −25 to +70 ℃ −13 to +158 ℉
Ambient humidity		30 to 85 % RH, Storage: 30 to 95 % RH
Voltage withstandability		1,000 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance		20 MΩ or more with 500 V DC mega between all supply terminals connected together and enclosure
Vibration resistance		10 to 55 Hz frequency, 0.75 mm 0.030 in double amplitude maximum acceleration 90 m/s2 in X, Y and Z directions for two hours each
Shock resistance		300 m/s² acceleration in X, Y and Z directions three times each
Connection terminal		Detachable spring-cage terminal
Wiring cable		Terminal block connector: 0.2 to 1.5 mm² Power supply connector (A1, A2): 0.2 to 2.5 mm² (only for ST4-C12EX)
Material		Enclosure: ABS
Weight		Net weight: 180 g approx. Gross weight: 390 g approx.	Net weight: 240 g approx. Gross weight: 450 g approx.

Notes:1) Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +20℃ +68℉.

2) Complies with those standards only when the controller is used in combination with the sensor head ST4-□.

3) If the total current of the control outputs (OSSD1, OSSD2), auxiliary outputs, and muting lamp output exceeds 400 mA, the wiring resistance between the controller and the power supply should be 1 Ω or less. In addition, if the total current is 400 mA or less, the wiring resistance between the controller and the power supply should be 2 Ω or less.

4) PFH_D (Probability of dangerous failure per hour) depends on number of single beam sensor ST4-A□ connected to controller.

Number of single beam sensor ST4-A□

1 unit 2 units 3 units 4 units 5 units 6 units

PFH_D ST4-C11 4.79 × 10⁻¹⁰ 6.53 × 10⁻¹⁰ 8.27 × 10⁻¹⁰ 1.00 × 10⁻¹⁰ 1.18 × 10⁻¹⁰ 1.35 × 10⁻¹⁰

ST4-C12EX 4.96 × 10⁻¹⁰ 6.70 × 10⁻¹⁰ 8.45 × 10⁻¹⁰ 1.02 × 10⁻¹⁰ 1.19 × 10⁻¹⁰ 1.37 × 10⁻¹⁰

5) MTTF_D Mean time to dangerous failure (in years)