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Business > Industrial Devices > Automation Controls Top > FA Sensors & Components > Sensors > Light Curtains / Safety Components > Safety Liquid Leak Sensor [Control Category 4 PLe SIL3] SQ4 > Specifications

Safety Liquid Leak Sensor [Control Category 4 PLe SIL3] SQ4

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Specifications

Specifications

Sensors

Type		For standard liquid	For chemical liquid
Model No.	PNP output	SQ4-A21-P	SQ4-A22-P
Model No.	NPN output	SQ4-A21-N	SQ4-A22-N
Sensing object(Note 2)		Water (Standard liquid) (Note 3)	Sulfuric acid, Hydrochloric acid, Phosphoric acid, Ammonia, Fluorinert™ (Note 4), Galden^® (Note 4), Hydrofluoric acid etc. (Note 3)
Supply voltage		12 to 24 V DC ±10 % Ripple P-P 10 % or less
Current consumption		30 mA or less
Utilization category		DC-12, DC-13
Detection output (Leakage detection)		<PNP output type> PNP open-collector transistor • Maximum source current: 50 mA • Applied voltage: Same as the supply voltage (between detection output and +V) • Residual voltage: 2.5 V or less (at 50 mA source current) <NPN output type> NPN open-collector transistor • Maximum sink current: 50 mA • Applied voltage: Same as the supply voltage (between detection output and 0 V) • Residual voltage: 2 V or less (at 50 mA sink current)
	Response time	10 ms or less
	Output operation	ON when normal condition or initial detection, OFF when detection leakage or wrong installation
	Short-circuit protection	Incorporated
Detection auxiliary output (Initial detection)		<PNP output type> PNP open-collector transistor • Maximum source current: 50 mA • Applied voltage: Same as the supply voltage (between detection auxiliary output and +V) • Residual voltage: 2.5 V or less (at 50 mA source current) <NPN output type> NPN open-collector transistor • Maximum sink current: 50 mA • Applied voltage: Same as the supply voltage (between detection auxiliary output and 0 V) • Residual voltage: 2 V or less (at 50 mA sink current)
	Response time	50 ms or less
	Output operation	ON when normal condition, OFF when initial detection or accidental leakage
	Short-circuit protection	Incorporated
Protection		IP65 / IP67 (IEC)
Ambient temperature		-10 to +55 ℃ +14 to +131 ℉ (No dew condensation or icing allowed) (Note 5) Storage: -10 to +55 ℃ +14 to +131 ℉
Ambient humidity		35 to 85 % RH, Storage: 35 to 85 % RH
Emitting element		Infrared LED (modulated)
Material		Enclosure: Polypropylene	Enclosure: PFA
Cable		0.18 mm² 4-core PVC cabtyre cable, 2 m 6.562 ft long	0.1 mm² 4-core PFA cabtyre cable, 2 m 6.562 ft long
Weight		Net weight: 45 g approx., Gross weight: 110 g approx.

Notes:

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

2) Highly viscous liquid may not be stably detected.

3) The agents mentioned above are examples. It may not be detected depending on viscosity the agent.
Before using this device, check the detecting liquid and installation condition.

4) Fluorinert is the world wide trademark of 3M. Galden is the registered trademark of Solvay.

5) Liquid being detected should be also kept within the rated ambient temperature range.

1)	Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +20 ℃ +68 ℉.
2)	Highly viscous liquid may not be stably detected.
3)	The agents mentioned above are examples. It may not be detected depending on viscosity the agent. Before using this device, check the detecting liquid and installation condition.
4)	Fluorinert is the world wide trademark of 3M. Galden is the registered trademark of Solvay.
5)	Liquid being detected should be also kept within the rated ambient temperature range.

Controller

Model No.		SQ4-C11
Applicable standards	International standard	ISO 13849-1:2015 (Category 4, PLe), IEC 61508-1 to 7 (SIL3)
	Japan	JIS B 9705-1 (Category 4), JIS C 0508-1 to 7 (SIL3)
	Europe (Note 2)	EN 55011 Class A, EN 61000-6-2, EN 50178, EN ISO 13849-1:2015 (Category 4, PLe), EN 61508-1 to 7 (SIL3)
	North America (Note 3)	ANSI/UL 508, CAN/CSA C22.2 No.14
	South Korea	S1-G-1, S2-W-5, KS C IEC 60947-5-2
	SEMI	Conforming to SEMI-S2-0310a
Power voltage		24 V DC⁺¹⁰_-15 % Ripple P-P 10 % or less
Consumption current		200 mA or less
Control output [OSSD 1(Y1), OSSD 2(Y2)]		PNP open-collector transistor / NPN open-collector transistor (switch method) <Selecting PNP output> • Maximum source current: 200 mA • Applied voltage: Same as power voltage (between control output to +V) • Residual voltage: 2.5 V or less (at 200 mA source current) <Selecting NPN output> • Maximum sink current: 200 mA • Applied voltage: Same as power voltage (between control output to 0 V) • Residual voltage: 2.0 V or less (at 200 mA sink current)
	Response time	20 ms or less (excluding the response time of the sensor)
	Operation mode (Output operation)	ON when normal condition or initial detection, OFF when detection leakage or wrong installation
	Protection circuit (Short-circuit protection)	Incorporated
	Utilization category	DC-12, DC-13
Sensor monitor output (AUX1, 2, 3, 4, Non-safety output)		PNP open-collector transistor / NPN open-collector transistor (switch method) <Selecting PNP output> • Maximum source current: 60 mA • Applied voltage: Same as power voltage(between sensor monitor output to +V) • Residual voltage: 2.5 V or less (at 60 mA source current) <Selecting NPN output> • Maximum sink current: 60 m A • Applied voltage: Same as power voltage(between sensor monitor output to 0 V) • Residual voltage: 2.0 V or less (at 60 mA sink current)
	Response time	100 ms or less (excluding the response time of the sensor)
	Operation mode (Output operation)	ON when normal condition, OFF when initial detection or accidental leakage
	Protection circuit (Short-circuit protection)	Incorporated
	Utilization category	DC-12, DC-13
Lockout output		OFF for lockout (Rating: Same as sensor monitor output)
Auxiliary output		Negative logic output of control output 1 / 2 (OSSD 1 / 2) (Rating: Same as sensor monitor output) [Auxiliary output ON when control output 1 / 2 (OSSD 1/2) is OFF]
Functions		Interlock / lockout cancel / Test input / External device monitor / Safety input / Control output polarity selection / Non-safety output polarity selection / Sensor connection number setting
Protection		IP20 (IEC) (However, it should be in IP54 protection structure of control panel)
Ambient temperature		-10 to +55 ℃ +14 to +131 ℉ (No dew condensation or icing allowed), Storage: -20 to +70 ℃ -4 to +158 ℉
Ambient humidity		35 to 85 % RH, Storage: 35 to 85 % RH
PFH_D		When PNP output is selected: 1.89 × 10^-9 (when connecting 4 safety liquid leak sensors) When NPN output is selected: 1.80 × 10^-9 (when connecting 4 safety liquid leak sensors)
MTTF_D		100 years or more
Material		Main unit case: PC+ABS (alloy)
Weight		Net weight: 170 g approx., Gross weight: 440 g approx.

Notes:

1) Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +20 ℃ +68 ℉.
PFH_D: Probability of dangerous failure per hour, MTTF_D: Mean time to dangerous failure (in years)

2) Regarding EU Machinery Directive, a Notified Body, TÜV SÜD, has certified with the type examination certificate.

3) With regards to the standards in the US/Canada, a Notified Body, TÜV SÜD, has certified the CTÜVUS mark.

1)	Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +20 ℃ +68 ℉. PFH_D: Probability of dangerous failure per hour, MTTF_D: Mean time to dangerous failure (in years)
2)	Regarding EU Machinery Directive, a Notified Body, TÜV SÜD, has certified with the type examination certificate.
3)	With regards to the standards in the US/Canada, a Notified Body, TÜV SÜD, has certified the CTÜVUS mark.