- Level 1: Reset without edge detection, Optional Automatic reset function, Short-circuit recognition, Level 2: / Opener (NC) Normally open contact (NO)
- Two-functions safety monitoring module (double evaluation)
- 2 x 2 enabling paths with different shut-down behaviour, e.g. emergency exit opens both enabling paths (level 1), guard door monitoring only opens the second enabling path (level 2)
- Suitable for signal processing of potential-free contacts, e.g. Emergency Stop command devices (level 1), position switches with safety function, solenoid interlocks and safety sensors (level 2)
Ordering data
| Product type description | SRB400CA/Q 24VDC | 
| Article number (order number) | 101176213 | 
| EAN (European Article Number) | 4250116202010 | 
| eCl@ss number, Version 9.0 | 27-37-18-19 | 
| eCl@ss number, Version 11.0 | 27-37-18-19 | 
| ETIM number, version 6.0 | EC001449 | 
| Replacement article number | 101177157 | 
| Available until | 31.12.2022 | 
Approval - Standards
| Certificates | cULus EAC | 
General data
| Standards | IEC 61508 IEC/EN 60204-1 EN 60947-5-1 EN ISO 13849-1 | 
| Climatic stress | EN 60068-2-78 | 
| Enclosure material | Glass-fibre reinforced thermoplastic, ventilated | 
| Material of the contacts, electrical | Ag-Ni, self-cleaning, positive drive | 
| Gross weight | 235 g | 
General data - Features
| Stop-Category | 0 | 
| Electronic Fuse | Yes | 
| Wire breakage detection | Yes | 
| Short-circuit recognition | Yes | 
| Removable Terminals | Yes | 
| Start input | Yes | 
| Feedback circuit | Yes | 
| Automatic reset function | Yes | 
| Earth connection detection | Yes | 
| Integral System Diagnostics, status | Yes | 
| Number of inputs for NC | 3 | 
| Number of inputs for NO | 1 | 
| Number of LEDs | 6 | 
| Number of safety contacts | 4 | 
Safety appraisal
| Standards | EN 60947-5-1 IEC 61508 | 
Safety appraisal - Relay outputs
| Performance level, stop 0, up to | e | 
| Category, Stop 0 | 4 | 
| Diagnostic Coverage (DC) Level, Stop 0 | ≥ 99 % | 
| PFH-Value Stop 0 | 2.00 x 10⁻⁸ /h | 
| Safety Integrity Level (SIL), Stop 0, suitable for applications in | 3 | 
| Mission time | 20 Year(s) | 
| Common Cause Failure (CCF), minimum | 65 | 
Mechanical data
| Mechanical life, minimum | 10,000,000 Operations | 
| Mounting | Snaps onto standard DIN rail to EN 60715 | 
Mechanical data - Connection technique
| Terminal Connector | Screw connection rigid or flexible | 
| Terminal designations | IEC/EN 60947-1 | 
| Cable section, minimum | 0.25 mm² | 
| Cable section, maximum | 2.5 mm² | 
| Tightening torque of Clips | 0.6 Nm | 
Mechanical data - Dimensions
| Width | 22.5 mm | 
| Height | 100 mm | 
| Depth | 121 mm | 
Ambient conditions
| Degree of protection of the enclosure | IP40 | 
| Degree of protection of the mounting space | IP54 | 
| Degree of protection of clips or terminals | IP20 | 
| Ambient temperature, minimum | -25 °C | 
| Ambient temperature, maximum | +45 °C | 
| Storage and transport temperature, minimum | -40 °C | 
| Storage and transport temperature, maximum | +85 °C | 
| Resistance to vibrations to EN 60068-2-6 | 10 ... 55 Hz, Amplitude 0.35 mm | 
| Restistance to shock | 10 g / 11 ms | 
Ambient conditions - Insulation value
| Rated impulse withstand voltage Uimp | 4 kV | 
| Overvoltage category | III | 
| Degree of pollution to IEC/EN 60664-1 | 2 | 
Electrical data
| Rated operating voltage | 24 VDC -15%/+20%, residual ripple max. 10% | 
| Rated AC voltage for controls at DC minimum | 20.4 VDC | 
| Rated control voltage at DC, maximum | 28.8 VDC | 
| Electrical power consumption | 4.4 W | 
| Contact resistance, maximum | 0.1 Ω | 
| Note (Contact resistance) | in new state | 
| Drop-out delay in case of power failure, typically | 80 ms | 
| Drop-out delay in case of emergency, typically | 20 ms | 
| Pull-in delay at automatic start, maximum, typically | 100 ms | 
| ON delay at automatic start | Adjustable | 
| Pull-in delay at RESET, typically | 20 ms | 
Electrical data - Safe relay outputs
| Voltage, Utilisation category AC15 | 250 VAC | 
| Current, Utilisation category AC-15 | 6 A | 
| Voltage, Utilisation category DC13 | 24 VDC | 
| Current, Utilisation category DC13 | 6 A | 
| Switching capacity, minimum | 10 VDC | 
| Switching capacity, minimum | 10 mA | 
| Switching capacity, maximum | 250 VAC | 
| Switching capacity, maximum | 8 A | 
Electrical data - Digital inputs
| Conduction resistance, maximum | 40 Ω | 
Electrical data - Relay outputs (auxiliary contacts)
| Switching capacity, maximum | 24 VDC | 
| Switching capacity, maximum | 2 A | 
Electrical data - Electromagnetic compatibility (EMC)
| EMC rating | EMC-Directive | 
Status indication
| Indicated operating states | Position relay K2 Position relay K1 Internal operating voltage Ui Position relay K3 | 
Other data
| Note (applications) | Safety sensor Guard system Pull-wire emergency stop switches Emergency stop button | 
Notes
| Note (General) | Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit. | 
| Note (Short-circuit recognition) | Level 1 | 
Circuit example
| Note (Wiring diagram) | The wiring diagram is shown with guard doors closed and in de-energised condition. Relay outputs: Suitable for 2 channel control, for increase in capacity or number of contacts by means of contactors or relays with positive-guided contacts. The control recognises cross-short, cable break and earth leakages in the monitoring circuit. Input level: the example shows a 2-channel control of an Emergency Stop command device (level 1) with external reset button (R), and guard door monitoring (level 2) with feedback circuit (H2). Automatic start (level 1): The automatic start is programmed by connecting the feedback circuit to the terminals X1/+24 V DC. Automatic start (level 2): The automatic start is programmed by connecting the feedback circuit to the terminals X2/+24 V DC. If the feedback circuit is not required, establish a bridge. | 
 
                



 
                                         
                                         
                                         
                                         
                                         
                                         
                                 
                                 
                                 
                                 
                                 
                                
 
                   
                   
                  