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 |
| Application | Two-hand push buttons |
| General features | Two-hand push buttons; 24V DC/AC; 2NO+2NC; None Reset |
| 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 device | Two-hand push buttons |
| Input current | ≤50mA |
| Max. overall cable resistance | ≤15Ω |
| 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) |
| Utilisation category | AC-15,5A/230V; DC-13,5A/24V |
| Switch-on delay | ≤30ms |
| Synchronization time | ≤500ms |
| Delay-on de-energisation | ≤15ms |
| Recovery time | ≤250ms |
| Supply interruption before de-energisation | 20ms |
| Ambient temperature | -20℃~+60℃ |
| Storage temperature | -40℃~+80℃ |
| Relative humidity | 10%~90% |
| Vibration | Frequency: 10Hz~55Hz; Amplitude: 0.35mm |
| Overvoltage category | Ⅲ |
| 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 |
| Depth | 114.5mm |
| Height | 99.0mm |
| Width | 22.5mm |
| Material | PA |
| Protection type | IP20 |
| Flammability rating | UL94/V0 |
| Colour | Yellow/Grey |
| Approvals | SIL (TUV); CE |
| Functional safety | SIL3, in accordance with IEC 61508 |
| CE | MD directive; LVD directive |
| 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% |
| 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) |
| 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 |
| 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 |
| Mounting type | DIN35mm |
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