Two-hand push buttons | 24V DC/AC | 2NO+2NC | None Reset
CZSR8201-2A2B  Two-hand push buttons | 24V DC/AC | 2NO+2NC | None Reset
CZSR8201-2A2B is suitable for the application of two-hand push buttons, with 2 safety output contacts (N/O) and 2 auxiliary output contacts (N/C). It should be operated in double channel mode, with the simultaneity time of less than 500ms.
Input Device:
Two-hand push buttons
Supply Voltage:
24V DC/AC
Number of Contacts:
2NO+2NC
Reset Mode:
None reset
CZSR8201-2A2B
Product details
Technichal Data
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Two-hand push buttons | 24V DC/AC | 2NO+2NC | None Reset


Product Name  CZSR8201-2A2B Two-hand push buttons input Safety Relay
Number of channels  Dual channel inputs / 4 outputs
Supply voltage(Ue)  24V DC/AC
Input signal  Switch: two-hand push buttons
Output signal  Relay: 2NO+2NC
Certifications  TUV SIL3; CE; PLe; Cat.4


Two-hand push buttons | 24V DC/AC | 2NO+2NC | None Reset

Two-hand push buttons | 24V DC/AC | 2NO+2NC | None Reset

Two-hand push buttons | 24V DC/AC | 2NO+2NC | None Reset


Two-hand push buttons | 24V DC/AC | 2NO+2NC | None Reset


Product Application
General Features
Power Supply
Input
Output
Time
Operating Conditions
Insulation
Dimensions
Housing
Product Approvals
Standard / Specification
Safety-related Parameters (SIL)
Safety-related Parameters (PL)
EMC
Connection
Installation
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Technichal Data
Product Application
Application Two-hand push buttons
General Features
General features Two-hand push buttons; 24V DC/AC; 2NO+2NC; None Reset
Power Supply
Supply Voltage (Ue) 24V DC/AC
Voltage tolerance 0.85~1.1
Current consumption ≤60mA (24V DC); ≤140mA (24V AC)
Power protection Reverse protection
Power supply mode Independent power supply
Power connecting mode Terminal
Input
Input device Two-hand push buttons
Input current ≤50mA
Max. overall cable resistance ≤15Ω
Output
Output signal Relay contact
Number of contacts 4
Contact type 2NO+2NC
Contact material AgSnO₂ + 0.2μm Au
Contact fuse protection 10A gL/gG NEOZED(NO); 6A gL/gG NEOZED(NC)
Switching capacity AC-15,5A/230V; DC-13,5A/24V
Time
Switch-on delay ≤30ms
Synchronization time ≤500ms
Delay-on de-energisation ≤15ms
Recovery time ≤250ms
Supply interruption before de-energisation 20ms
Operating Conditions
Ambient temperature -20℃~+60℃
Storage temperature -40℃~+80℃
Relative humidity 10%~90%
Vibration Frequency: 10Hz~55Hz; Amplitude: 0.35mm
Insulation
Overvoltage category
Pollution degree 2
Rated insulation voltage 250V AC
Rated impulse withstand voltage Input~Output: 6000V (1.2/50us); Between outputs: 4000V (1.2/50us)
Insulation strength 1500V AC, 1min
Insulation resistance Input~Output: ≥100MΩ; Between Outputs: ≥100MΩ
Airgap creepage In accordance with EN 60947-1
Dimensions
Depth 114.5mm
Height 99.0mm
Width 22.5mm
Housing
Material PA
Protection type IP20
Flammability rating UL94/V0
Colour Yellow/Grey
Product Approvals
Approvals SIL (TUV); CE
Standard / Specification
Functional safety SIL3, in accordance with IEC 61508
CE MD directive; LVD directive
Safety-related Parameters (SIL)
Type of equipment Type A
Safety integrity level (SIL) SIL 3
Mode of operation (Low Demand) IEC 61508 - Low Demand
Safe failure fraction (Low Demand) (SFF) ≥99%
Proof test interval (Low Demand) (PTI) 20 years
λS (Low Demand) 7.45E-07
λDU (Low Demand) 6.00E-09
λDD (Low Demand) 5.94E-07
Average probability of dangerous failure on demand (Low Demand) (PFDavg) 2.66E-05
Diagnostic coverage (Low Demand) (DC) ≥99%
Mode of operation (High Demand) IEC 61508 - High Demand
Safe failure fraction (High Demand) (SFF) ≥99%
Proof test interval (High Demand) (PTI) 20 years
λS (High Demand) 7.45E-07
λDU (High Demand) 6.00E-09
λDD (High Demand) 5.94E-07
Average probability of dangerous failure on demand (High Demand) (PFDavg) 3.06E-10
Diagnostic coverage (High Demand) (DC) ≥99%
Safety-related Parameters (PL)
Performance level (PL) PLe
Category (Cat.) Cat.4
Stop category 0
Mission time (TM) 20 years
Diagnostic covery (DCavg) ≥99%
Mean time to repair (MTTR) 0
Mean time to dangerous failure (MTTFd) 190 years
Number of cycles until 10% of the components fail dangerously (B10d) 300000(5A)
EMC
Electromagnetic compatibility In accordance with IEC 61326-1(GB/T 18268), IEC 61326-3-1
Electrical fast transient/burst immunity In accordance with IEC 61326-3-1
Surge immunity In accordance with IEC 61326-3-1
Radiated,radio-frequency,electromagnetic field immunity In accordance with IEC 61326-3-1
Electrostatic discharge immunity In accordance with IEC 61326-3-1
Immunity to conducted disturbances, induced by radio-frequency fields In accordance with IEC 61326-3-1
Immunity to conducted, common mode disturbances in the frequency range 0 Hz to 150 kHz In accordance with IEC 61326-3-1
Connection
Conductor cross section solid range 0.5~2.5mm²
Conductor cross section flexible range 0.5~2.5mm²
Min. conductor cross section (AWG) 24
Max. conductor cross section (AWG) 12
Stripping length 8mm
Screw thread M3
Connection method Screw terminals
Min. tightening torque 0.5Nm
Max. tightening torque 0.6Nm
Installation
Mounting type DIN35mm
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