Official DistributorSKU
MPN
PSR-PC51-1NO-1NC-24DC-SP
Weight
0.244 kg
Series PSR-PC
PSR-PC51-1NO-1NC-24DC-SP - Coupling relay
Coupling relay for electrical isolation and power adaptation for SIL 3 F&G applications, low demand, load diagnostics in the Off and On state for wire break and short circuit, 1 enabling current path, test pulse filter, plug-in Push-in terminal block, width: 17.5 mm
- Earth leakage monitoring
- Suitable for low-demand applications up to SIL 3 in accordance with IEC 61508, IEC 61511, and EN 50156
- Configurable Off and On state diagnostics
- Active error acknowledgment via A1 at DO
- Integrated DCS test pulse filter
- 1 enabling current path, 1 signaling current path
Technical Specifications
Utilization restriction
| EMC note | EMC: class A product, see manufacturer's declaration in the download area |
| CCCex note | Use in potentially explosive areas is not permitted in China. |
Product properties
| Product family | PSRmini |
| Application | Safe switch on |
| Application | Low demand |
| Application | Ex |
| Relay type | Electromechanical relay |
Times
| Typ. starting time with Us | typ. 100 ms (when controlled via A1-A2) |
| Typical release time | typ. 30 ms (when controlled via A1-A2) |
| Recovery time | 1 s (when controlled via A1-A2) |
Electrical properties
| Maximum power dissipation for nominal condition | 3.8 W (ati UB = 26.4 V DC, UBD = 26.4 V DC, IL = 3 A) |
| Nominal operating mode | 100% operating factor |
Air clearances and creepage distances between the power circuits
| Rated Insulation Voltage | 250 V AC |
| Rated surge voltage/insulation | Basic insulation 4 kV between all current paths and housing |
| Rated surge voltage/insulation | Safe isolation, 6 kV reinforced insulation from (A1/A2, 24V/0V, 21/22, and TP1/TP2/TP3) to the enabling current path (L, L', LO, LO', NI, NI', N,N') |
Supply
| Designation | A1/A2 |
| Rated control circuit supply voltage US | 20.4 V DC ... 26.4 V DC |
| Rated control circuit supply voltage US | 24 V DC -15 % / +10 % |
| Rated control supply current IS | typ. 75 mA |
| Power consumption at US | typ. 2 W (at US/UD; On state) |
| Inrush Current | max. 100 mA |
| Filter time | 2 ms (at A1-A2 in the event of voltage dips at Us) |
| Filter time | max. 2 ms (at A1-A2; low test pulse width) |
| Filter time | ≥ 100 ms (at A1-A2; low test pulse rate) |
| Filter time | max. 17 ms (at A1-A2; high test pulse width) |
| Filter time | ≥ 800 ms (at A1-A2; high test pulse rate) |
| Protective circuit | Surge protection; 36 V suppressor diode |
| Protective circuit | Reverse polarity protection |
| Designation | 24V/0V |
| Diagnostic supply voltage UD | 24 V DC -20 % / +25 % |
| Input current at UD | 35 mA (at UD = 24 V) |
| Input current at UD | 45 mA (at UD = 19 V) |
| Input current at UD | 25 mA (at UD = 30 V) |
| Inrush current at UD | 1.5 A (Δt < 10 µs) |
| Power consumption at UD | typ. 0.9 W (at UD; Off state) |
| Protective circuit | Surge protection; 33 V suppressor diode |
| Protective circuit | Reverse polarity protection |
Digital: Test points for proof test (T1, T2, T3)
| Number of Inputs | 3 |
| Inrush Current | typ. 200 mA |
| Protective circuit | Surge protection; 36 V suppressor diode |
| Current consumption | typ. 20 mA (Input TP1) |
| Current consumption | typ. 20 mA (Input TP2) |
| Current consumption | typ. 30 mA (Input TP3) |
Relay: Enabling current path (L-LO-NI-N / L'-LO'-NI'-N')
| Output description | safety-related N/O contacts |
| Number of Outputs | 1 (undelayed) |
| Contact switching type | 1 enabling current path |
| Contact Material | AgNi, gold-flashed, Ag alloy |
| Switching voltage | min. 16 V AC/DC |
| Switching voltage | max. 250 V AC |
| Switching voltage | max. 125 V DC |
| Switching capacity | min. 1 W |
| Inrush Current | min. 50 mA |
| Inrush Current | max. 5 A (Δt 1 s) |
| Limiting Continuous Current | 3 A (Observe derating, load type, and on-load voltage) |
| Sq. Total current | 9 A2 (observe derating) |
| Switching frequency | max. 0.5 Hz |
| Diagnostic threshold | 7 Ω ... 20 kΩ (configurable) |
| Mechanical service life | approx. 5x 10⁷ cycles |
Relay: Signaling current path (21/22)
| Output description | non-safety-related N/C contact |
| Number of Outputs | 1 (without delay, floating) |
| Contact switching type | 1 signaling current path |
| Switching current | max. 100 mA |
| Inrush Current | ≤ 800 mA (Δt 100 ms) |
| Short-circuit protection | no |
Connection technology
| pluggable | yes |
Conductor connection
| Connection Method | Push-in connection |
| Conductor cross section rigid | 0.2 mm² ... 1.5 mm² |
| Conductor cross section flexible | 0.2 mm² ... 1.5 mm² |
| Conductor cross section, flexible, with ferrule, with plastic sleeve | 0.25 mm² ... 1.5 mm² (only together with CRIMPFOX 6) |
| Conductor cross section flexible, with ferrule without plastic sleeve | 0.25 mm² ... 1.5 mm² (only together with CRIMPFOX 6) |
| Conductor cross-section AWG | 24 ... 16 |
| Stripping length | 8 mm |
Signaling
| Status display | 1 x yellow LED, 1 x green LED, 1 x red LED |
Dimensions
| Width | 17.5 mm |
| Height | 117.4 mm |
| Depth | 114.5 mm |
Material specifications
| Color (Housing) | yellow (RAL 1018) |
| Housing Material | Polyamide |
Safety data: EN 50156-2
| Safety Integrity Level (SIL) | 3 (Reference IEC 61508) |
Safety data: IEC 61508 - Low demand
| Safety Integrity Level (SIL) | 3 |
Ambient conditions
| Degree of Protection | IP20 |
| Min. degree of protection of inst. location | IP54 |
| Ambient Temperature (Operation) | -25 °C ... 60 °C (observe derating) |
| Ambient temperature (storage/transport) | -40 °C ... 65 °C |
| Maximum altitude | ≤ 2000 m (Above sea level) |
| Max. permissible humidity (storage/transport) | 75 % (on average, 85% infrequently, non-condensing) |
| Max. permissible relative humidity (operation) | 75 % (on average, 85% infrequently, non-condensing) |
| Shock | 15g, 11 ms |
| Vibration (Operation) | 10 Hz ... 150 Hz, 2g |
| Air pressure (operation) | 79 kPa ... 106 kPa |
| Air pressure (storage/transport) | 79 kPa ... 106 kPa |
ATEX
| Identification | II 3G Ex ec nC IIC T4 Gc |
| Certificate | DEMKO 19 ATEX 2240X |
IECEx
| Identification | Ex ec nC IIC T4 Gc |
| Certificate | IECEx ULD 19.0023X |
UL, USA/Canada
| Identification | cULus |
| Certificate | E140324 |
UL Ex, USA / Canada
| Identification | Class I, Zone 2, AEx ec nC IIC T4 / Ex ec nC IIC Gc T4 X |
| Identification | Class I, Div. 2, Groups A, B, C, D, T4 |
| Certificate | E360692 |
CE
| Identification | CE-compliant |
Environmental simulation test
| Identification | G3 |
| Certificate | ISA-S71.04 |
CCC / China-Ex
| Identification | Ex ec nC IIC T4 Gc |
| Certificate | 2022122304115696 |
Air clearances and creepage distances between the power circuits
| Standards/regulations | IEC 60664-1 |
Mounting
| Mounting Type | DIN rail mounting |
| Assembly instructions | See derating curve |
| Mounting Position | vertical or horizontal |
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Additional Information
| Pack Size | 1 |
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