Phoenix PLC-RPT Series: PLC Interface Relay Modules - Selection Guide
Product Overview
The Phoenix PLC-RPT Series are interface relay modules designed to connect PLC outputs with external devices in industrial automation. They provide reliable electrical isolation and signal conversion, protecting PLCs from high-load impacts while enhancing system reliability. All models feature tool-free push-in connections and support 35mm DIN rail mounting, suitable for industrial environments ranging from -40°C to 70°C.
Model Quick Reference Table
| Model No. | Contact Configuration | Contact Material | Maximum Switching Capacity | Special Features | Application Scenarios |
|---|---|---|---|---|---|
| 2910539PLC-RPT-24UC/2X21/FG | 2 Changeover Contacts (2CO) | AgNi (Forced Guided) | 250V/6ADC13: 24V/3A | Forced guided contacts (safety applications) | Mechanical interlock safety circuits (compliant with EN 61810-3) |
| 2900324PLC-RPT-24UC/21HC/RW | 1 Changeover Contact (1CO) | AgSnO (High Capacity) | 250V/10ADC13: 24V/6A | High-capacity contacts, Railway-approved | High-power load control, Railway vehicle systems |
| 2900293PLC-RPT-24UC/21HC | 1 Changeover Contact (1CO) | AgSnO (High Capacity) | 250V/10ADC13: 24V/6A | High-capacity contacts | General industrial high-power control |
| 2900321PLC-RPT-24UC/21AU/RW | 1 Changeover Contact (1CO) | Gold-plated AgNi (Low Level) | 30V/50mA (gold-plated) | Gold-plated contacts, Railway-approved | Low-level signals, Railway electronic equipment |
| 2900307PLC-RPT-24UC/21AU | 1 Changeover Contact (1CO) | Gold-plated AgNi (Low Level) | 30V/50mA (gold-plated) | Gold-plated contacts | Precision measuring equipment, Low-level signal control |
| 2900349PLC-RPT-24UC/21-21AU/RW | 2 Changeover Contacts (2CO) | Gold-plated AgNi | 30V/50mA (gold-plated) | Dual contacts, Railway-approved | Redundant control systems, Railway signal equipment |
| 2910526PLC-RPT-24UC/21-21AU/MS | 2 Changeover Contacts (2CO) | Gold-plated AgNi | 30V/50mA (gold-plated) | Dual contacts, Manual operation | Maintenance testing, Emergency backup control |
| 2900332PLC-RPT-24UC/21-21 | 2 Changeover Contacts (2CO) | AgNi | 250V/6A | Standard configuration | General industrial dual-loop control |
| 2900346PLC-RPT-24UC/21-21/RW | 2 Changeover Contacts (2CO) | AgNi | 250V/6A | Dual contacts, Railway-approved | Railway system dual-loop control |
| 2910520PLC-RPT-24UC/21-21/MS | 2 Changeover Contacts (2CO) | AgNi | 250V/6A | Dual contacts, Manual operation | Equipment commissioning, Emergency control |
| 2900318PLC-RPT-24UC/21/RW | 1 Changeover Contact (1CO) | AgNi | 250V/6A | Railway-approved | Railway single-loop control |
| 2900300PLC-RPT-24UC/21 | 1 Changeover Contact (1CO) | AgNi | 250V/6A | Standard configuration | General industrial single-loop control |
| 2900328PLC-RPT-24UC/1/S/H | 1 Normally Open Contact (1NO) | AgNi | 250V/6A | Single contact, High reliability | Simple control circuits, Status indication |
Core Technical Specifications (Universal)
| Parameter | Value | Notes |
|---|---|---|
| Supply Voltage | 24V AC/DC (20.9V~33.6V) | Wide voltage range, adapts to industrial fluctuations |
| Typical Power Consumption | 0.26W~0.72W | Low power consumption, reduces cabinet temperature rise |
| Response Time | 3ms~15ms | Fast response, suitable for high-speed control |
| Mechanical Life | 5×10⁶~3×10⁷ operations | High reliability, reduces maintenance frequency |
| Contact Material | AgNi (Standard)/AgSnO (HC)/Gold-plated AgNi (AU) | Select based on load type |
| Maximum Switching Voltage | 250V AC/DC (Standard Models) | Universal industrial voltage level |
| Maximum Continuous Current | 6A (Standard Models); 10A (HC Models) | Meets most industrial load requirements |
| Insulation Strength | 4kV (Coil-Contact) | High isolation, anti-interference |
| Connection Type | Push-in | Tool-free, fast wiring |
| Wire Gauge | 0.14mm²~2.5mm² | Compatible with multiple cable types |
| Protection Class | IP20 (Base); RTIII (Relay) | Dust-proof, suitable for cabinet mounting |
| Operating Temperature | -40°C~70°C | Adapts to extreme industrial environments |
Application Scenarios & Recommended Models
1. Safety Monitoring Systems
- Requirement: Forced guided contacts to ensure reliable disconnection of safety circuits
- Recommendation: 2910539 (PLC-RPT-24UC/2X21/FG)
- Reason: Forced guided contacts (compliant with EN 61810-3) prevent contact welding in case of faults, ensuring personnel safety
2. Railway Vehicle Control Systems
- Requirement: Wide temperature operation (-40°C~70°C), high vibration resistance, railway certification
- Recommendation: 2900324 (21HC/RW), 2900321 (21AU/RW)
- Reason: EN 50155 certified, adapts to train operating environments; gold-plated contacts ensure reliable transmission of low-level signals
3. Precision Measuring Equipment
- Requirement: Low-level signal switching, prevention of contact oxidation
- Recommendation: 2900307 (PLC-RPT-24UC/21AU)
- Reason: Gold-plated AgNi contacts with minimum switching voltage of 100mV, suitable for small signals of measuring equipment
4. General Industrial Control
- Requirement: Standard load switching, cost-effective and reliable
- Recommendation: 2900300 (21), 2900332 (21-21)
- Reason: High cost-performance, single/dual loop options, meets most industrial control needs
5. High-Power Equipment Control
- Requirement: High current-carrying capacity (10A)
- Recommendation: 2900293 (PLC-RPT-24UC/21HC)
- Reason: AgSnO high-capacity contacts with maximum 10A switching current, suitable for high-power loads such as solenoid valves and small motors
6. Equipment Commissioning & Maintenance
- Requirement: Manual operation function for on-site debugging
- Recommendation: 2910526 (21-21AU/MS), 2910520 (21-21/MS)
- Reason: Integrated manual operation button, allows contact status testing without power supply, simplifying maintenance processes
Core Advantages
- Push-in Connection: Tool-free, wiring completed in 5 seconds, improving installation efficiency
- High Isolation Performance: 4kV insulation prevents interference between PLC and loads, enhancing system stability
- Modular Design: Separate relay and base; only the relay needs to be replaced in case of failure, reducing maintenance costs
- Wide Temperature Operation: -40°C~70°C adapts to extreme industrial environments, reducing temperature compensation requirements
- Multiple Contact Options: Standard/high-capacity/gold-plated contacts adapt to different load types
Installation & Usage Notes
- Rail Mounting: 35mm DIN rail (NS 35/7.5), can be closely arranged (zero spacing)
- Wiring Notes: Strip 10mm of wire insulation, ensure wires are fully inserted in place
- Load Matching: Contact current ≥ load current (1.2x margin recommended for reliability)
- Safety Tip: For high voltage (>250V), install isolation plates (PLC-ATP) between modules
Summary
The Phoenix PLC-RPT Series relay modules are ideal interfaces for connecting PLCs with external devices in industrial automation, providing comprehensive solutions from simple signal conversion to safety circuit control. When selecting, determine the appropriate model based on load characteristics (voltage, current), application scenarios (general industrial/railway/safety), and functional requirements (manual operation/forced guided), ensuring reliable system operation.
Next Step: For detailed parameters of specific models or comparisons with other series (e.g., PLC-RSC), refer to the Phoenix official manual or contact technical support.
Phoenix PLC-RPT Series: PLC Interface Relay Modules - Selection Guide
Created on：2025-11-14 14:24
