Phoenix PSR Series Industrial Safety Control Modules & Relays Selection Guide

Opening: Safety-Certified Control Solutions for Industrial Safety Loops

The Phoenix PSR series is a portfolio of industrial-grade safety control modules, safety relays, and interface adapters designed to implement and monitor safety-related circuits in factory automation systems. Covering PSR-SCP (24V DC safety control modules), PSR-SCF (24UC/120UC safety relays), and PSR-RSM-HTL-ADAPTER (HTL signal adapters), these products comply with international safety standards (EN ISO 13849, SIL 3, PL e) and feature diverse I/O configurations, timing/monitoring functions, and modular design. Widely used in emergency stop circuits, safety door monitoring, and robotic safety systems, they ensure the integrity of industrial safety loops and reduce the risk of equipment and personnel hazards.

I. Core Advantages of the PSR Series

1. High-level safety certification:
   • Complies with EN ISO 13849 (up to PL e), IEC 61508 (up to SIL 3), and EN 62061 standards, meeting global industrial safety requirements;
   • Redundant circuit design for fault tolerance, ensuring safety function activation even in single-point failure scenarios.
2. Diverse functional flexibility:
   • Rich I/O configurations: 1×1/2×1/3×1/4×1/5×1 single-channel outputs and 1×2/2×2 dual-channel safety outputs, adapting to different safety loop topologies;
   • Specialized functions: Timing control (T1-T30 delay variants), safety monitoring (RSM/SIM), and sequential safety logic (TS/ESD), matching complex safety requirements;
   • Multi-voltage compatibility: 24V DC (SCP series), 24UC/120UC (SCF series) for global power system adaptation.
3. Modular & scalable design:
   • DIN rail (NS 35/7.5) mounting, compatible with Phoenix safety cabinet infrastructure;
   • Plug-and-play I/O expansion, supporting safety loop extension without system re-certification;
   • LED status indicators for real-time safety loop health monitoring, enabling quick fault localization.
4. Specialized interface & adapter support:
   • HTL signal adapter (PSR-RSM-HTL-ADAPTER) for high-speed safety encoder signal conversion;
   • Universal interface compatibility with PLC/DCS safety controllers, realizing integrated safety management.

II. Product Classification & Detailed Parameter Table

The PSR series is categorized by product type (PSR-SCP safety control modules, PSR-SCF safety relays, PSR-RSM-HTL adapter) with sub-variants based on functional focus, I/O configuration, and special specifications (timing, voltage).

1. PSR-SCP Series (24V DC Safety Control Modules)

24V DC-powered safety control modules with diverse functional sub-types (TS, SIM, RSM, MXF, FSP, ESP, ESD, CE3) for targeted safety loop control.

2. PSR-SCF Series (Safety Relays with UC Voltage Supply)

Safety relays with 24UC (universal DC/AC) or 120UC (120V universal) power supply, for safety loop switching in multi-voltage environments.

3. PSR-RSM-HTL-ADAPTER (HTL Signal Safety Adapter)

Specialized adapter for converting HTL encoder signals to safety-compatible signals, enabling high-speed safety position monitoring.

III. PSR Series Nomenclature Decoding

PSR-[Series]-[Voltage]-[Function]-[I/O Configuration]-[Special Spec]

• PSR: Product series identifier (industrial safety control module/relay for safety loop management).
• Series:
  • SCP = Safety Control Module (24V DC, multi-functional safety logic, diverse I/O);
  • SCF = Safety Relay (24UC/120UC, universal voltage, safety contact switching);
  • RSM-HTL-ADAPTER = HTL signal safety adapter (for encoder safety signal conversion).
• Voltage:
  • 24DC = 24V DC dedicated power;
  • 24UC = 24V universal (AC/DC) power;
  • 120UC = 120V universal (AC/DC) power (North American standard).
• Function:
  • TS = Timing/Sequential safety control (for staged shutdown);
  • SIM/RSM = Safety Input/Safety Relay Monitoring (for sensor/relay status validation);
  • MXF = Mixed I/O safety logic (single/dual-channel output combination);
  • FSP = Fail-Safe Power control (power cutoff for safety loops);
  • ESP = Emergency Stop Protection (emergency stop signal processing);
  • ESD = Safety Delay control (customizable shutdown delay T1-T30/300ms);
  • CE3 = Certified safety logic (pre-certified for quick deployment);
  • URM = Universal Relay Monitoring (for multi-voltage safety relay control).
• I/O Configuration:
  • X1 = Single-channel safety output (1NO, non-redundant);
  • X2 = Dual-channel safety output (2NO, redundant for PL e/SIL 3);
  • X21 = Standard dual-channel safety contact (2NO, 10A/250V AC);
  • SDI/SDO = Safety Digital Input/Output (for sensor/actuator connection).
• Special Spec:
  • T1-T30 = Shutdown delay time (1s-30s, ESD variants);
  • 300 = 300ms fixed delay (ESD variant);
  • B = Backup circuit (redundant for high-reliability loops);
  • SET = Complete kit (pre-assembled for turnkey deployment).

IV. 3-Step Quick Selection Technique

Step 1: Select Product Series Based on Power & Application Type

• 24V DC safety logic control (complex I/O, timing/delay): Choose PSR-SCP series (all 24DC variants).
• Multi-voltage safety relay switching (24UC/120UC, simple contact output): Opt for PSR-SCF series (24UC for global, 120UC for North America).
• HTL encoder safety signal conversion: Pick PSR-RSM-HTL-ADAPTER (2981897) for high-speed position safety monitoring.

Step 2: Match Functional Sub-type to Safety Requirement

• Staged/sequential shutdown: Select TS sub-type (2986096/2986038) for sequential safety logic.
• Emergency stop with delay: Choose ESD sub-type (2981428/2981088) with custom delay (T1-T30) for industry-specific shutdown needs.
• Fail-safe power cutoff: Opt for FSP sub-type (2986960/2981978) for safety-critical power loops.
• Pre-certified rapid deployment: Pick CE3 sub-type (1118037/1179332) to avoid on-site safety certification.
• Multi-sensor input monitoring: Select SIM sub-type (2981936) for 4-channel safety input validation.

Step 3: Choose I/O Configuration & Special Spec

• Redundant safety output (PL e/SIL 3): Select X2/X21 dual-channel outputs (e.g., 2981444 with 2×2, 2981363 with 2×21).
• Non-redundant general safety output: Pick X1 single-channel outputs (e.g., 2986096 with 4×1).
• Backup circuit for critical loops: Choose B suffix variants (2902725/1118037) for redundant safety logic.
• Manual reset after emergency stop: Select M suffix variant (2986012) for mandatory manual intervention post-fault.

V. Recommended Industry-Scenario Combinations

VI. Selection Pitfall Avoidance Guide

1. Safety grade mismatch: PL e/SIL 3 loops using single-channel (X1) outputs → Select dual-channel (X2/X21) variants (e.g., 2981363) to meet safety certification requirements.
2. Voltage supply error: North American 120V AC systems using 24DC modules → Choose PSR-SCF-120UC (2981376) to ensure power compatibility and avoid module burnout.
3. Delay spec neglect: High-temperature equipment using non-delayed safety modules → Pick ESD variants with custom delay (e.g., T30=30s, 2981800) to prevent equipment damage during sudden shutdown.
4. HTL signal oversight: Robotic position safety using non-HTL adapters → Select PSR-RSM-HTL-ADAPTER (2981897) to validate high-speed encoder signals for safety position limits.
5. Manual reset omission: Critical equipment using auto-reset modules → Choose M suffix variants (2986012) to enforce mandatory manual reset after emergency stops, preventing accidental restart.

Conclusion: Select the Right PSR Module for Industrial Safety Loop Integrity

The Phoenix PSR series provides targeted safety control solutions for industrial safety loops, covering complex safety logic (SCP), multi-voltage safety switching (SCF), and HTL signal adaptation (adapter), all compliant with top-tier safety standards.