Official DistributorSKU
MPN
PSR-MS20-1NO-1DO-24DC-SC
Weight
0.088 kg
This product is Not Cancellable/Not Returnable
Series PSR-MS
PSR-MS20-1NO-1DO-24DC-SC - Safety relays
Safety relay for emergency stop and safety doors up to SIL 1, Cat. 1, PL c, depending on the application up to SIL 3, Cat. 4, PL e, 1-channel operation, automatic start, 1 enabling current path, US = 24 V DC, fixed screw terminal block
- Depending on the application, up to cat. 4/PL e in accordance with ISO 13849-1, SIL CL 3 in accordance with EN IEC 62061
- Low housing width of just 6.8 mm
- 1-channel control
- 1 enabling current path, 1 digital signal output
- Automatic activation
Technical Specifications
Product properties
| Product family | PSRmini |
| Application | Emergency stop |
| Application | Safety door |
| Application | Solenoid switch |
| Relay type | Electromechanical relay with force-guided contacts in accordance with IEC/EN 61810-3 |
Times
| Typical response time | < 175 ms |
| Typ. starting time with Us | < 250 ms (when controlled via A1) |
| Typical release time | < 20 ms (when controlled via A1 or S12) |
| Recovery time | < 500 ms |
Electrical properties
| Maximum power dissipation for nominal condition | 3 W () |
| Nominal operating mode | 100% operating factor |
Air clearances and creepage distances between the power circuits
| Rated Insulation Voltage | 250 V AC |
| Rated Insulation Voltage | 250 V AC |
| Rated surge voltage/insulation | Safe isolation, reinforced insulation 6 kV between input circuit and enabling current pathBasic insulation 4 kV between all current paths and housing |
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. 42 mA |
| Power consumption at US | typ. 1 W |
| Inrush Current | 4.5 A (Δt < 120 µs at Us) |
| Filter time | 1 ms (at A1 in the event of voltage dips at Us) |
| Protective circuit | Surge protection; Suppressor diode |
| Protective circuit | Protection against polarity reversal for rated control circuit supply voltage |
Digital: Sensor circuit (S11, S12)
| Description of the input | safety-related sensor inputs |
| Input voltage range "0" signal | 0 V DC ... 5 V DC (for safe Off; at S12) |
| Input current range "0" signal | 0 mA ... 2 mA (for safe Off; at S12) |
| Inrush Current | < 20 mA (with Us/Ix to S12) |
| Filter time | max. 1.5 ms (at S12; test pulse width) |
| Filter time | min. 7.5 ms (at S12; test pulse rate) |
| Filter time | Test pulse rate = 5 x Test pulse width |
| Max. permissible overall conductor resistance | 150 Ω |
| Current consumption | < 5 mA (with Us/Ix to S12) |
Digital: Start circuit (S35)
| Description of the input | non-safety-related |
| Number of Inputs | 1 |
| Input voltage range "1" signal | 20.4 V DC ... 26.4 V DC |
| Inrush Current | < 10 mA |
| Max. permissible overall conductor resistance | 150 Ω |
| Protective circuit | Suppressor diode |
| Current consumption | < 10 mA |
Relay: Enabling current path (13/14)
| Output description | safety-related N/O contacts |
| Number of Outputs | 1 (undelayed) |
| Contact switching type | 1 enabling current path |
| Contact Material | AgSnO2 |
| Switching voltage | min. 12 V AC/DC |
| Switching voltage | max. 250 V AC/DC (Observe the load curve) |
| Switching capacity | min. 60 mW |
| Inrush Current | min. 3 mA |
| Inrush Current | max. 6 A |
| Limiting Continuous Current | 6 A (observe derating) |
| Sq. Total current | 36 A2 (observe derating) |
| Switching frequency | max. 0.5 Hz |
| Mechanical service life | 10x 106 cycles |
| Output fuse | 6 A gL/gG (N/O contact) |
| Output fuse | 4 A gL/gG (for low-demand applications) |
Signal: M1
| Output description | non-safety-related |
| Number of Outputs | 1 (digital, PNP) |
| Voltage | 22 V DC (Us - 2 V) |
| Current | max. 100 mA |
| Maximum Inrush Current | 500 mA (Δt = 1 ms at Us) |
| Short-circuit protection | no |
Connection technology
| pluggable | no |
Conductor connection
| Connection Method | Screw connection |
| Conductor cross section rigid | 0.2 mm² ... 2.5 mm² |
| Conductor cross section flexible | 0.2 mm² ... 2.5 mm² |
| Conductor cross-section AWG | 26 ... 12 |
| Stripping length | 12 mm |
| Screw thread | M3 |
| Tightening torque | 0.5 Nm ... 0.6 Nm |
Signaling
| Status display | 2 x green LEDs |
| Operating voltage display | 1 x green LED |
Dimensions
| Width | 6.8 mm |
| Height | 93.1 mm |
| Depth | 102.5 mm |
Material specifications
| Color (Housing) | yellow (RAL 1018) |
| Housing Material | PBT |
Safety data
| Stop category | 0 |
Safety data: EN ISO 13849
| Category | 1 (up to Cat. 4 depending on the application) |
| Performance level (PL) | c (up to PL e depending on the application) |
Safety data: IEC 61508 - High demand
| Safety Integrity Level (SIL) | 1 (up to SIL 3 depending on the application) |
Safety data: IEC 61508 - Low demand
| Safety Integrity Level (SIL) | 1 (up to SIL 3 depending on the application) |
Safety data: EN IEC 62061
| Safety Integrity Level (SIL) | 3 (up to SIL 3 depending on the application) |
Ambient conditions
| Degree of Protection | IP20 |
| Min. degree of protection of inst. location | IP54 |
| Ambient Temperature (Operation) | -40 °C ... 60 °C (observe derating) |
| Ambient temperature (storage/transport) | -40 °C ... 85 °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 |
| Vibration (Operation) | 10 Hz ... 150 Hz, 2g |
CE
| Certificate | CE-compliant |
Air clearances and creepage distances between the power circuits
| Standards/regulations | EN 60947-1 |
Mounting
| Mounting Type | DIN rail mounting |
| Assembly instructions | See derating curve |
| Mounting Position | vertical or horizontal |
Accessories
Why Proax for Phoenix Contact 2904950?
Proax is an authorized distributor of Phoenix Contact 2904950 and one of Phoenix Contact's largest distributors in North America. Our highly skilled in-house technical team is ready to assist with any technical needs.
Have a question in mind? to help you get the right product as quickly as possible for your project. We're always here to help!
Short Lead Time
Highly Trained Staff
Live Chat
Technical Support
Local Inventory
60+ Years Experience
Additional Information
| Pack Size | 1 |
Recommended
Module de sécurité pour la surveillance sans capteur de la vitesse et de la plage de vitesse jusqu'au SIL 3, catégorie 4, PL e, analyse à 2 canaux du champ tournant des moteurs à courant alternatif ou triphasés, bloc de jonction à vis enfichable, largeur : 12,5 mm
Module de sécurité pour la surveillance sans capteur de la vitesse et de la plage de vitesse jusqu'au SIL 3, catégorie 4, PL e, analyse à 2 canaux du champ tournant des moteurs à courant alternatif ou triphasés, bloc de jonction Push-in enfichable, largeur : 12,5 mm
