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
Type | For standard liquid | For chemical liquid | |
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Model No. | PNP output | SQ4-A21-P | SQ4-A22-P |
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) |
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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) |
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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 ℉ |
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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 ℉. |
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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. |
Model No. | SQ4-C11 | |
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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) |
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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) |
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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] |
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Functions | Interlock / lockout cancel / Test input / External device monitor / Safety input / Control output polarity selection / Non-safety output polarity selection / Sensor connection number setting |
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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 | |
PFHD | 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) |
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MTTFD | 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 ℉. PFHD: Probability of dangerous failure per hour, MTTFD: Mean time to dangerous failure (in years) |
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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. |
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