Safety Control Unit SF-C21

The safety control unit allows the user to connect and control various machine safety components. The SF-C10 series was specifically designed to connect and control Panasonic light curtains, while the SF-C21 safety control unit can be used for a variety of safety devices such as; safety switches, emergency switches, enable grip switches, safety beam sensors, safety scanners, and safety light curtains.

Safety Control Unit SF-C21

Part number list

Results 1

Models table for series Safety Control Unit SF-C21
Part No.	Datasheet	CE Marking Directive Compliance	Applicable Standards: Safety	Applicable Standards: EMC	Related Standards	Supply Voltage: Power Supply for Internal	Supply Voltage: Power Supply for External	Current Consumption: Power Supply for Internal	Current Consumption: Power Supply for External	Safety Input (IN1 to IN8)	Safety Input (IN1 to IN8): On Level	Safety Input (IN1 to IN8): Off Level	Safety Input (IN1 to IN8): Rated Input Current	Safety Input (IN1 to IN8): Input Impedance	Safety Input (IN1 to IN8): Duration of Detectable on State	Safety Input (IN1 to IN8): Duration of Undetectable Off State	Control Output (OUT1 to OUT4)	Control Output (OUT1 to OUT4): Output Mode	Control Output (OUT1 to OUT4): On Delay Function	Control Output (OUT1 to OUT4): Off Delay Function	Control Output (OUT1 to OUT4): Short-Circuit Protection	Control Output (OUT1 to OUT4): Response Time	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output)	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output): Output Mode (Factory Defaults)	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output): Output Mode (Any Of The Auxiliary Outputs Can Be Customized Using The Software Tool)	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output): Short-Circuit Protection	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output): Response Time	Muting Indicator Output	Muting Indicator Output: Output Mode	Muting Indicator Output: Short-Circuit Protection	Muting Indicator Output: Response Time	Interlock Function	Lockout Release Function	External Device Monitoring Function	Communication Function (MODBUS RTU)	Logic Selection Function	Logic Setting Function	Pollution Degree	Excess Voltage Category	Operating Altitude	Startup Time After Power On	PFH_D	MTTF_D	Environmental Resistance: Degree of Protection	Ambient Temperature	Ambient Humidity	Environmental Resistance: Dielectric Strength Voltage	Insulation Resistance	Vibration Resistance	Shock Resistance	Connecting Method	Cable Length	Material	Weight (Typ.)	Dummy
SF-C21		Machinery Directive, EMC Directive, RoHS Directive	IEC 61508-1 to 7, EN 61508-1 to 7 (SIL3), ISO 13849-1 (Up to Category 4, PLe), IEC 61131-2, IEC 61010-2-201, IEC 62061 (SILCL3), UL 61010-1, UL 61010-2-201, UL 1998	IEC 61000-6-2, IEC 61326-3-1, EN 55011	IEC 60947-1, IEC 60947-5-1, IEC 60947-5-2, IEC 60947-5-5, IEC 60947-5-8, IEC 61496-1, IEC TS 62046, ISO 13851	24 V DC ⁺¹⁰ _-15 % Ripple P-P10 % or less (Note) "Power supply for internal" is the power supply for safety input. The power supplies for internal and external are insulated. (Note) The power supply unit connected to this device must satisfy the conditions below. - Output voltage within 20.4 V to 26.4 V DC (Ripple P-P: 10 % or less.) - Power supply unit SELV (safety extra low voltage) / PELV (protected extra low voltage) conforming to the EMC Directive and Low-voltage Directive (In case CE Marking conformity is required.) - Power supply unit conforming to the Low-voltage Directive and with an output of 100 VA or less - Power supply unit with an output holding time of 20 ms or more. - Power supply unit corresponding to CLASS 2 (In case C-TÜV US Listing Mark conformity is required.)	24 V DC ⁺¹⁰ _-15 % Ripple P-P10 % or less (Note) "Power supply for external" is the power supply for control output / auxiliary output. The power supplies for internal and external are insulated. (Note) The power supply unit connected to this device must satisfy the conditions below. - Output voltage within 20.4 V to 26.4 V DC (Ripple P-P: 10 % or less.) - Power supply unit SELV (safety extra low voltage) / PELV (protected extra low voltage) conforming to the EMC Directive and Low-voltage Directive (In case CE Marking conformity is required.) - Power supply unit conforming to the Low-voltage Directive and with an output of 100 VA or less - Power supply unit with an output holding time of 20 ms or more. - Power supply unit corresponding to CLASS 2 (In case C-TÜV US Listing Mark conformity is required.)	200 mA or less (Note) "Power supply for internal" is the power supply for safety input. The power supplies for internal and external are insulated. (Note) The power supply unit connected to this device must satisfy the conditions below. - Output voltage within 20.4 V to 26.4 V DC (Ripple P-P: 10 % or less.) - Power supply unit SELV (safety extra low voltage) / PELV (protected extra low voltage) conforming to the EMC Directive and Low-voltage Directive (In case CE Marking conformity is required.) - Power supply unit conforming to the Low-voltage Directive and with an output of 100 VA or less - Power supply unit with an output holding time of 20 ms or more. - Power supply unit corresponding to CLASS 2 (In case C-TÜV US Listing Mark conformity is required.)	100 mA or less (Note) "Power supply for external" is the power supply for control output / auxiliary output. The power supplies for internal and external are insulated. (Note) The power supply unit connected to this device must satisfy the conditions below. - Output voltage within 20.4 V to 26.4 V DC (Ripple P-P: 10 % or less.) - Power supply unit SELV (safety extra low voltage) / PELV (protected extra low voltage) conforming to the EMC Directive and Low-voltage Directive (In case CE Marking conformity is required.) - Power supply unit conforming to the Low-voltage Directive and with an output of 100 VA or less - Power supply unit with an output holding time of 20 ms or more. - Power supply unit corresponding to CLASS 2 (In case C-TÜV US Listing Mark conformity is required.)	2 inputs x 4, Rated voltage: Same as the voltage of the power supply for internal	Input voltage: 18 V Input current: 3.5 mA	Input voltage: 5 V Input current: 1.0 mA	5 mA approx.	4.7 KΩ approx.	10 ms or more	0.7 ms or less	PNP open-collector transistor with 2 outputs x 2 - Maximum source current: 300 mA / output - Applied voltage: Same as the voltage of the power supply for external - Residual voltage: 2.5 V or less - Leakage current: 100 μA or less (Including power supply OFF condition)	True: ON False: OFF	Incorporated	Incorporated	Incorporated	OFF response: 10 ms or less ON response: 100 ms or less	PNP open-collector transistor with 1 output x 4 - Maximum source current: 60 mA / output - Applied voltage: Same as the voltage of the power supply for external - Residual voltage: 2.5 V or less - Leakage current: 100 μA or less (Including power supply OFF condition)	AUX1: Negative logic of OUT1 / OUT2 (ON when OUT1 / OUT2 is OFF) AUX2: Negative logic of OUT3 / OUT4 (ON when OUT3 / OUT4 is OFF) AUX3: Reset trigger output (ON under reset release wait condition) AUX4: Lockout output (OFF when lockout)	Negative logic of OUT1 / OUT2 (ON when OUT1 / OUT2 is OFF) Negative logic of OUT3 / OUT4 (ON when OUT3 / OUT4 is OFF) Positive logic of OUT1 / OUT2 (ON when OUT1 / OUT2 is ON) Positive logic of OUT3 / OUT4 (ON when OUT3 / OUT4 is ON) Outputs A, B, C, and D of diagnosis results of input blocks (ON when logic is true) Outputs E, F, and G of internal logic circuit diagnostic results (ON when logic is true) Reset trigger output (ON under reset release wait condition) Lockout output (OFF when lockout) Muting indicator output (ON when muting / override) Monitor output in response to IN1 to IN8 (ON when input) No output (normally OFF)	Incorporated	10 ms or less	Semiconductor photo MOS relay output x 1 - Maximum load current: 60 mA - Supply voltage: Same as the voltage of the power supply for internal - Residual voltage: 2.5 V or less - Leakage current: 100 μA or less (Including power supply OFF condition)	ON when muting / override	Incorporated	10 ms or less	Incorporated	Incorporated	Incorporated	Interface: RS-485 Protocol: MODBUS RTU Maximum transmission distance: 100 m 328.084 ft Maximum number of units that can be connected: 8 units (slaves)	No.0: Customization control No.1: Overall stop control No.2: Parallel muting control No.3: Sequential muting control No.4: Partial stop control 1 No.5: Partial stop control 2 No.6: Two-hand control No.7: OR control No.8: Operation mode selection control	Input mode, control mode, output mode, reset mode, auxiliary ou tput mode	2	II	2,000 m 6561.680 ft or less (Note) Do not use or store this device in a pressurized environment beyond the atmospheric pressure at sea level.	2 sec. or less	9.73 × 10⁻¹⁰ (Note:Probability of dangerous failure per hour)	More than 100 years (Note:Mean time to dangerous failure (in years))	IP20 (IEC)(must be installed in a control panel with protectio n IP54 or higher)	-10 to +55 ℃ +14 to +131 ℉ (No dew condensation or icing allowed), Storage: -25 to +60 ℃ -13 to +140 ℉	30 to 85 % RH, Storage: 30 to 85 % RH	1,000 V AC for one min. (All inputs connected together - USB port, all inputs connected together - RS-485 port, USB port - RS-485 port, between all supply terminals connected together and enclosure, all outputs connected together - all input connected together, all outputs connected together - USB port, all outputs connected together - RS-485 port)	20 MΩ, or more, with 500 V DC megger (All inputs connected together - USB port, all inputs connected together - RS-485 port, USB port - RS-485 port, between all supply terminals connected together and enclosure, all outputs connected together - all input connected together, all outputs connected together - USB port, all outputs connected together - RS-485 port)	5 to 8.4 Hz frequency, 3.5 mm 0.138 in half amplitude, 8.4 to 150 Hz frequency, Max. acceleration 9.8 m/s² (1 G), in X, Y and Z directions for two hours each (IEC / EN 60068-2-6)	147 m/s² (15 G) 11 ms in X, Y and Z directions for three times each (IEC / EN 60068-2-27)	Input / output and power supply: Detachable spring cage termina l blocks RS-485: Detachable spring-cage terminal block USB: MiniB male	100 m 328.084 ft or less	Main unit enclosure: Polycarbonate / ABS polymer alloy Enclosure: Polycarbonate	Net weight: 190 g approx. Gross weight: 320 g approx.	CE Marking (EMC Directive, RoHS Directive)

Models table for series Safety Control Unit SF-C21
Part No.	Datasheet	CE Marking Directive Compliance	Applicable Standards: Safety	Applicable Standards: EMC	Related Standards	Supply Voltage: Power Supply for Internal	Supply Voltage: Power Supply for External	Current Consumption: Power Supply for Internal	Current Consumption: Power Supply for External	Safety Input (IN1 to IN8)	Safety Input (IN1 to IN8): On Level	Safety Input (IN1 to IN8): Off Level	Safety Input (IN1 to IN8): Rated Input Current	Safety Input (IN1 to IN8): Input Impedance	Safety Input (IN1 to IN8): Duration of Detectable on State	Safety Input (IN1 to IN8): Duration of Undetectable Off State	Control Output (OUT1 to OUT4)	Control Output (OUT1 to OUT4): Output Mode	Control Output (OUT1 to OUT4): On Delay Function	Control Output (OUT1 to OUT4): Off Delay Function	Control Output (OUT1 to OUT4): Short-Circuit Protection	Control Output (OUT1 to OUT4): Response Time	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output)	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output): Output Mode (Factory Defaults)	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output): Output Mode (Any Of The Auxiliary Outputs Can Be Customized Using The Software Tool)	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output): Short-Circuit Protection	Auxiliary Output (AUX1 to AUX4) (Non-Safety Output): Response Time	Muting Indicator Output	Muting Indicator Output: Output Mode	Muting Indicator Output: Short-Circuit Protection	Muting Indicator Output: Response Time	Interlock Function	Lockout Release Function	External Device Monitoring Function	Communication Function (MODBUS RTU)	Logic Selection Function	Logic Setting Function	Pollution Degree	Excess Voltage Category	Operating Altitude	Startup Time After Power On	PFH_D	MTTF_D	Environmental Resistance: Degree of Protection	Ambient Temperature	Ambient Humidity	Environmental Resistance: Dielectric Strength Voltage	Insulation Resistance	Vibration Resistance	Shock Resistance	Connecting Method	Cable Length	Material	Weight (Typ.)	Dummy
SF-C21		Machinery Directive, EMC Directive, RoHS Directive	IEC 61508-1 to 7, EN 61508-1 to 7 (SIL3), ISO 13849-1 (Up to Category 4, PLe), IEC 61131-2, IEC 61010-2-201, IEC 62061 (SILCL3), UL 61010-1, UL 61010-2-201, UL 1998	IEC 61000-6-2, IEC 61326-3-1, EN 55011	IEC 60947-1, IEC 60947-5-1, IEC 60947-5-2, IEC 60947-5-5, IEC 60947-5-8, IEC 61496-1, IEC TS 62046, ISO 13851	24 V DC ⁺¹⁰ _-15 % Ripple P-P10 % or less (Note) "Power supply for internal" is the power supply for safety input. The power supplies for internal and external are insulated. (Note) The power supply unit connected to this device must satisfy the conditions below. - Output voltage within 20.4 V to 26.4 V DC (Ripple P-P: 10 % or less.) - Power supply unit SELV (safety extra low voltage) / PELV (protected extra low voltage) conforming to the EMC Directive and Low-voltage Directive (In case CE Marking conformity is required.) - Power supply unit conforming to the Low-voltage Directive and with an output of 100 VA or less - Power supply unit with an output holding time of 20 ms or more. - Power supply unit corresponding to CLASS 2 (In case C-TÜV US Listing Mark conformity is required.)	24 V DC ⁺¹⁰ _-15 % Ripple P-P10 % or less (Note) "Power supply for external" is the power supply for control output / auxiliary output. The power supplies for internal and external are insulated. (Note) The power supply unit connected to this device must satisfy the conditions below. - Output voltage within 20.4 V to 26.4 V DC (Ripple P-P: 10 % or less.) - Power supply unit SELV (safety extra low voltage) / PELV (protected extra low voltage) conforming to the EMC Directive and Low-voltage Directive (In case CE Marking conformity is required.) - Power supply unit conforming to the Low-voltage Directive and with an output of 100 VA or less - Power supply unit with an output holding time of 20 ms or more. - Power supply unit corresponding to CLASS 2 (In case C-TÜV US Listing Mark conformity is required.)	200 mA or less (Note) "Power supply for internal" is the power supply for safety input. The power supplies for internal and external are insulated. (Note) The power supply unit connected to this device must satisfy the conditions below. - Output voltage within 20.4 V to 26.4 V DC (Ripple P-P: 10 % or less.) - Power supply unit SELV (safety extra low voltage) / PELV (protected extra low voltage) conforming to the EMC Directive and Low-voltage Directive (In case CE Marking conformity is required.) - Power supply unit conforming to the Low-voltage Directive and with an output of 100 VA or less - Power supply unit with an output holding time of 20 ms or more. - Power supply unit corresponding to CLASS 2 (In case C-TÜV US Listing Mark conformity is required.)	100 mA or less (Note) "Power supply for external" is the power supply for control output / auxiliary output. The power supplies for internal and external are insulated. (Note) The power supply unit connected to this device must satisfy the conditions below. - Output voltage within 20.4 V to 26.4 V DC (Ripple P-P: 10 % or less.) - Power supply unit SELV (safety extra low voltage) / PELV (protected extra low voltage) conforming to the EMC Directive and Low-voltage Directive (In case CE Marking conformity is required.) - Power supply unit conforming to the Low-voltage Directive and with an output of 100 VA or less - Power supply unit with an output holding time of 20 ms or more. - Power supply unit corresponding to CLASS 2 (In case C-TÜV US Listing Mark conformity is required.)	2 inputs x 4, Rated voltage: Same as the voltage of the power supply for internal	Input voltage: 18 V Input current: 3.5 mA	Input voltage: 5 V Input current: 1.0 mA	5 mA approx.	4.7 KΩ approx.	10 ms or more	0.7 ms or less	PNP open-collector transistor with 2 outputs x 2 - Maximum source current: 300 mA / output - Applied voltage: Same as the voltage of the power supply for external - Residual voltage: 2.5 V or less - Leakage current: 100 μA or less (Including power supply OFF condition)	True: ON False: OFF	Incorporated	Incorporated	Incorporated	OFF response: 10 ms or less ON response: 100 ms or less	PNP open-collector transistor with 1 output x 4 - Maximum source current: 60 mA / output - Applied voltage: Same as the voltage of the power supply for external - Residual voltage: 2.5 V or less - Leakage current: 100 μA or less (Including power supply OFF condition)	AUX1: Negative logic of OUT1 / OUT2 (ON when OUT1 / OUT2 is OFF) AUX2: Negative logic of OUT3 / OUT4 (ON when OUT3 / OUT4 is OFF) AUX3: Reset trigger output (ON under reset release wait condition) AUX4: Lockout output (OFF when lockout)	Negative logic of OUT1 / OUT2 (ON when OUT1 / OUT2 is OFF) Negative logic of OUT3 / OUT4 (ON when OUT3 / OUT4 is OFF) Positive logic of OUT1 / OUT2 (ON when OUT1 / OUT2 is ON) Positive logic of OUT3 / OUT4 (ON when OUT3 / OUT4 is ON) Outputs A, B, C, and D of diagnosis results of input blocks (ON when logic is true) Outputs E, F, and G of internal logic circuit diagnostic results (ON when logic is true) Reset trigger output (ON under reset release wait condition) Lockout output (OFF when lockout) Muting indicator output (ON when muting / override) Monitor output in response to IN1 to IN8 (ON when input) No output (normally OFF)	Incorporated	10 ms or less	Semiconductor photo MOS relay output x 1 - Maximum load current: 60 mA - Supply voltage: Same as the voltage of the power supply for internal - Residual voltage: 2.5 V or less - Leakage current: 100 μA or less (Including power supply OFF condition)	ON when muting / override	Incorporated	10 ms or less	Incorporated	Incorporated	Incorporated	Interface: RS-485 Protocol: MODBUS RTU Maximum transmission distance: 100 m 328.084 ft Maximum number of units that can be connected: 8 units (slaves)	No.0: Customization control No.1: Overall stop control No.2: Parallel muting control No.3: Sequential muting control No.4: Partial stop control 1 No.5: Partial stop control 2 No.6: Two-hand control No.7: OR control No.8: Operation mode selection control	Input mode, control mode, output mode, reset mode, auxiliary ou tput mode	2	II	2,000 m 6561.680 ft or less (Note) Do not use or store this device in a pressurized environment beyond the atmospheric pressure at sea level.	2 sec. or less	9.73 × 10⁻¹⁰ (Note:Probability of dangerous failure per hour)	More than 100 years (Note:Mean time to dangerous failure (in years))	IP20 (IEC)(must be installed in a control panel with protectio n IP54 or higher)	-10 to +55 ℃ +14 to +131 ℉ (No dew condensation or icing allowed), Storage: -25 to +60 ℃ -13 to +140 ℉	30 to 85 % RH, Storage: 30 to 85 % RH	1,000 V AC for one min. (All inputs connected together - USB port, all inputs connected together - RS-485 port, USB port - RS-485 port, between all supply terminals connected together and enclosure, all outputs connected together - all input connected together, all outputs connected together - USB port, all outputs connected together - RS-485 port)	20 MΩ, or more, with 500 V DC megger (All inputs connected together - USB port, all inputs connected together - RS-485 port, USB port - RS-485 port, between all supply terminals connected together and enclosure, all outputs connected together - all input connected together, all outputs connected together - USB port, all outputs connected together - RS-485 port)	5 to 8.4 Hz frequency, 3.5 mm 0.138 in half amplitude, 8.4 to 150 Hz frequency, Max. acceleration 9.8 m/s² (1 G), in X, Y and Z directions for two hours each (IEC / EN 60068-2-6)	147 m/s² (15 G) 11 ms in X, Y and Z directions for three times each (IEC / EN 60068-2-27)	Input / output and power supply: Detachable spring cage termina l blocks RS-485: Detachable spring-cage terminal block USB: MiniB male	100 m 328.084 ft or less	Main unit enclosure: Polycarbonate / ABS polymer alloy Enclosure: Polycarbonate	Net weight: 190 g approx. Gross weight: 320 g approx.	CE Marking (EMC Directive, RoHS Directive)