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ST4-C12EX | Compact Type 4 Safety Beam Sensor ST4


Compact Type 4 Safety Beam Sensor ST4

*Photo may vary from actual product.

  • RoHS Compliant This product has been confirmed that it does not contain the 6 substances specified in EU RoHS Directive 2011/65/EU and the 4 substances specified in 2015/863/EU.  


Product Number ST4-C12EX
Part Number ST4-C12EX
Product Compact Type 4 Safety Beam Sensor
Details Controller [High-functional]
Product name Compact Type 4 Safety Beam Sensor ST4

As of June 15, 2024
Specifications and design of the products are subject to change without notice for the product improvement.

Spec Detail

Item Specifications
Product Number ST4-C12EX
Part Number ST4-C12EX
Applicable standards 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)
(Note) Complies with those standards only when the controller is used in combination with the sensor head ST4-x.
CE marking directive compliance Machinery Directive, EMC Directive, RoHS Directive
Power voltage 24 V DC +10-15 % Ripple P-P 10 % or less
Current consumption 120 mA or less (excluding sensor head ST4-Ax)
PFHD Refer to the following table(Note: (Probability of dangerous failure per hour) depends on number of single beam sensor ST4-A□ connected to controller.)
MTTFD More than 100 years (Note:Mean time to dangerous failure (in years))
Environmental resistance:Degree of protection Enclosure: IP40 (IEC)
Terminal: IP20 (IEC)
Environmental resistance:Ambient temperature -10 to +55 ℃ +14 to +131 (No dew condensation or icing allowed),
Storage: -25 to +70 ℃ -13 to +158
Environmental resistance:Ambient humidity 30 to 85 % RH, Storage: 30 to 95 % RH
Environmental resistance:Voltage withstandability 1,000 V AC for one min. between all supply terminals connected together and enclosure
Environmental resistance:Insulation resistance 20 MOhm or more with 500 V DC mega between all supply terminals connected together and enclosure
Environmental resistance: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<
Environmental resistance:Shock resistance 300 m/s2 acceleration in X, Y and Z directions three times each
Material Enclosure: ABS
Applicable sensor head ST4-Ax
Applicable sensor head: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)
Control outputs (OSSD 1, OSSD 2) 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 micro A or less (including power OFF condition)
Maximum load capacity: 1 micro F (from no-load to max. source current)
Load wiring resistance: 3 Ohm 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 micro A or less (including power OFF condition)
Maximum load capacity: 1 micro F (from no-load to max. sink current)
Load wiring resistance: 3 Ohm or less (between control output and load)
(Note) 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 Ohm 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 Ohm or less.
Control outputs (OSSD 1, OSSD 2):Operation mode ON when all beams of the connected ST4-Axs are received
OFF when one or more beams of the connected ST4-Axs are interrupted(except during muting / override)
OFF during lockout
Control outputs(OSSD1, OSSD2):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 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)
(Note) 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 Ohm 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 Ohm or less.
Auxiliary outputs:Operation mode
ON when muting function is invalid
OFF when muting function is valid

ON when override function is invalid
OFF when override function is valid

ON when muting lamp is in normal condition
OFF when muting lamp is in abnormal condition

Negative logic of the control outputs (OSSD1, OSSD2)
Auxiliary outputs:Protection circuit Incorporated
Muting lamp output Available muting lamp: 24 V DC, 1 to 10 W
(Note) 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 Ohm 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 Ohm or less.
Muting lamp output:Protection circuit Incorporated
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
Weight Net weight: 240 g approx
Gross weight: 450 g approx

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