Phoenix PLC-VT/TR/SC/RSC/RPT Series: Industrial Signal Conditioning, Relay & Interface Modules - Selection Guide
Product Overview
The Phoenix PLC-XXX Series encompasses a diverse range of industrial modules, including visual terminals (VT), transmitters (TR), surge protection (SP), signal conversion (SC), relay signal conditioning (RSC), and repeaters/amplifiers (RPT). Designed for seamless integration with PLC systems, these modules support voltage ranges (12V DC~48V DC, 24V UC), functional variants (explosion-proof EX, sensor SEN, actuator ACT, high-current HC), and specialized signal processing (relay output, signal amplification, surge suppression). Featuring 35mm DIN rail mounting, robust industrial design, and global compliance, they’re ideal for manufacturing automation, process control, and hazardous area applications requiring reliable signal conditioning, relay control, and signal repetition.
Model Quick Reference Table
1. PLC-VT Series (Visual Terminals/Interface Modules)
| Model No. |
Product Name |
Key Features |
Application Scenarios |
| 2296854 |
PLC-VT/LA |
Visual terminal, LA logic function |
PLC interface with specialized logic visualization |
| 2296870 |
PLC-VT |
Standard visual terminal |
Basic PLC human-machine interface (HMI) integration |
2. PLC-TR Series (Transmission Modules)
| Model No. |
Product Name |
Key Features |
Application Scenarios |
| 2910141 |
PLC-TR-1T-MUL-300M-PT |
1-channel, multi-range, 300m transmission, PT terminal |
Long-distance (300m) signal transmission (tool-free wiring) |
| 2910140 |
PLC-TR-1T-MUL-300M |
1-channel, multi-range, 300m transmission |
Standard long-distance signal transmission for PLC systems |
3. PLC-SP/PLC-SC Series (Surge Protection & Signal Conversion)
| Model No. |
Product Name |
Key Features |
Application Scenarios |
| 2980555 |
PLC-SP-ELR W1/2-24DC |
Surge protection, ELR-compatible, 2-channel, 24V DC |
24V DC ELR system surge suppression |
| 2980539 |
PLC-SC-ELR W1/2-24DC |
Signal conversion, ELR-compatible, 2-channel, 24V DC |
24V DC ELR system signal conditioning |
| 2982663 |
PLC-SC-EIK 1-SVN 24P/P |
Signal conversion, EIK-compatible, 1-channel, 24V |
24V DC EIK system signal conversion |
4. PLC-RSC Series (Relay Signal Conditioning Modules)
4.1 24V DC/UC Input
| Model No. |
Product Name |
Key Features |
Application Scenarios |
| 2910536 |
PLC-RSC-24UC/2X21/FG |
24V UC (AC/DC), 2×21 relay output, FG ground |
Universal voltage 2-channel relay signal conditioning |
| 2967633 |
PLC-RSC-24UC/21HC |
24V UC, 21HC high-current relay |
24V universal voltage high-current load control |
| 2910508 |
PLC-RSC-24UC/21-21AU/MS |
24V UC, 21-21 dual relay + AU auxiliary + MS indicator |
Universal voltage dual-relay control with status feedback |
| 2967112 |
PLC-RSC-24UC/21-21AU |
24V UC, 21-21 dual relay + AU auxiliary |
Universal voltage dual-relay signal conditioning |
| 2910503 |
PLC-RSC-24UC/21-21/MS |
24V UC, 21-21 dual relay + MS indicator |
Universal voltage dual-relay control with mechanical status |
| 2967073 |
PLC-RSC-24UC/21-21 |
24V UC, 21-21 dual relay |
Standard universal voltage dual-relay output |
| 2909650 |
PLC-RSC-24UC/21/MS |
24V UC, 21 relay + MS indicator |
Universal voltage single-relay control with status feedback |
| 2966184 |
PLC-RSC-24UC/21 |
24V UC, 21 relay |
Standard universal voltage single-relay output |
| 2982236 |
PLC-RSC-24UC/1/S/H |
24V UC, 1-channel, S/H function |
Universal voltage single-channel signal conditioning |
| 2307293 |
PLC-RSC-24DC/PMC T200/21HC |
24V DC, PMC T200-compatible, 21HC high-current |
24V DC high-current load control (PMC T200 system) |
4.2 12V DC Input
| Model No. |
Product Name |
Key Features |
Application Scenarios |
| 2967617 |
PLC-RSC-12DC/21HC |
12V DC, 21HC high-current relay |
12V DC high-current load control |
| 2967277 |
PLC-RSC-12DC/21-21AU |
12V DC, 21-21 dual relay + AU auxiliary |
12V DC dual-relay signal conditioning |
| 2967235 |
PLC-RSC-12DC/21-21 |
12V DC, 21-21 dual relay |
Standard 12V DC dual-relay output |
| 2966906 |
PLC-RSC-12DC/21 |
12V DC, 21 relay |
Standard 12V DC single-relay output |
| 1078800 |
PLC-RSC-12DC/1IC/ACT |
12V DC, 1IC input circuit, ACT actuator-dedicated |
12V DC actuator signal conditioning |
5. PLC-RPT Series (Repeater/Amplifier Modules)
| Model No. |
Product Name |
Key Features |
Application Scenarios |
| 2900301 |
PLC-RPT-48DC/21 |
48V DC, 21 relay output |
48V DC signal repetition + relay control |
| 2909528 |
PLC-RPT-24DC/21/EX |
24V DC, 21 relay, EX explosion-proof |
Hazardous area (Zone 2) 24V DC signal repetition |
| 2900299 |
PLC-RPT-24DC/21 |
24V DC, 21 relay output |
Standard 24V DC signal repetition + relay control |
| 2900313 |
PLC-RPT-24DC/1AU/SEN |
24V DC, 1AU auxiliary, SEN sensor-dedicated |
24V DC sensor signal amplification + auxiliary output |
| 2900312 |
PLC-RPT-24DC/1/ACT |
24V DC, 1-channel, ACT actuator-dedicated |
24V DC actuator signal amplification |
| 2909513 |
PLC-RPT-12DC/21-21/EX |
12V DC, 21-21 dual relay, EX explosion-proof |
Hazardous area dual-channel 12V DC signal repetition |
Core Technical Specifications (Universal)
| Parameter |
Value |
Notes |
| Supply Voltage |
12V DC (10.8~13.2V), 24V DC (19.2~28.8V), 24V UC (18~30V AC/DC), 48V DC (43.2~52.8V) |
Model-dependent voltage compatibility |
| Output Type |
Relay (NO/NC), auxiliary voltage output |
PLC-RSC/RPT: Relay contact rating up to 10A (HC models) |
| Functional Features |
Surge protection, signal amplification, relay control, explosion-proof (EX) |
Sub-series dependent |
| Transmission Distance |
Up to 300m (PLC-TR series) |
Long-distance signal transmission |
| Operating Temperature |
Standard: -25℃~70℃; EX models: -20℃~60℃ |
Industrial-grade temperature tolerance |
| Mounting Type |
35mm DIN rail (NS 35/7.5) |
Compact design for space-saving cabinet layout |
| Protection Class |
IP20 (cabinet mounting); EX models: IP20 + ATEX/IECEx |
Dust-proof; EX for Zone 2 hazardous areas |
| Certifications |
CE, UL, CSA; EX models: ATEX/IECEx (Zone 2) |
Global industrial and hazardous area compliance |
| Terminal Types |
PT (plug-in, tool-free): 0.14~2.5mm²; Screw: 0.14~2.5mm² |
PLC-TR: PT terminal option for fast maintenance |
| Isolation Voltage |
2kV (input-output) |
Anti-interference for stable signal processing |
Application Scenarios & Recommended Models
1. Hazardous Area 24V DC Signal Repetition (Relay Output)
- Requirement: Explosion-proof signal repeater with relay output for Zone 2 environments
- Recommended Model: 2909528 (PLC-RPT-24DC/21/EX)
- Key Reason: EX certification (Zone 2); 21 relay output; 24V DC compatibility with industrial sensors
2. Long-Distance (300m) Signal Transmission (Tool-Free Wiring)
- Requirement: Multi-range signal transmission for PLC systems with quick maintenance
- Recommended Model: 2910141 (PLC-TR-1T-MUL-300M-PT)
- Key Reason: 300m transmission distance; PT plug-in terminal; multi-range voltage compatibility
3. 24V Universal Voltage High-Current Load Control
- Requirement: 24V AC/DC (UC) high-current relay control for heavy-duty equipment
- Recommended Model: 2967633 (PLC-RSC-24UC/21HC)
- Key Reason: 24V UC universal input; 21HC high-current relay (up to 10A); signal conditioning function
4. 12V DC Actuator Signal Conditioning
- Requirement: 12V DC actuator-specific signal conditioning with input circuit protection
- Recommended Model: 1078800 (PLC-RSC-12DC/1IC/ACT)
- Key Reason: ACT actuator-dedicated design; 1IC input circuit protection; 12V DC compatibility
5. Sensor Signal Amplification (24V DC, Auxiliary Output)
- Requirement: 24V DC sensor signal repetition with auxiliary output for PLC feedback
- Recommended Model: 2900313 (PLC-RPT-24DC/1AU/SEN)
- Key Reason: SEN sensor-dedicated interface; 1AU auxiliary output; signal amplification for weak sensor signals
Core Advantages
- Diverse Functional Coverage: Visual terminals, transmitters, surge protection, relay conditioning, and repeaters in one product family
- Wide Voltage Compatibility: 12V DC~48V DC, 24V UC (AC/DC) supports global industrial power systems
- Hazardous Area Compliance: EX-suffix models enable Zone 2 deployment for critical applications
- Sensor/Actuator Specialization: SEN/ACT suffixes ensure seamless integration with industrial devices
- High-Current Support: HC models handle up to 10A load current for heavy-duty control
- Long-Distance Transmission: PLC-TR series supports up to 300m signal transmission
- Flexible Terminal Options: PT plug-in terminals for fast maintenance; screw terminals for secure wiring
- Industrial-Grade Reliability: -25℃~70℃ operating range, 2kV isolation, and IP20 protection
Installation & Usage Notes
- Voltage Matching: Ensure supply voltage aligns with module ratings (e.g., 12DC/24DC/24UC/48DC)
- EX Model Deployment: Install EX-suffixed models per ATEX/IECEx guidelines (proper grounding, Zone 2 restriction)
- Relay Load Capacity: Do not exceed relay contact rating (standard: 5A; HC models: 10A)
- Transmission Wiring: For PLC-TR (300m), use shielded twisted-pair cables to minimize signal attenuation
- Terminal Selection: Use PT plug-in terminals for frequent maintenance; screw terminals for vibration-prone environments
- Sensor/Actuator Compatibility: Select SEN-suffix models for sensors and ACT-suffix for actuators to ensure signal matching
- Mounting Spacing: Reserve ≥3mm between modules for heat dissipation, especially for HC high-current variants
- Environmental Protection: Install in dry, dust-free control cabinets (IP20 protection); avoid moisture/corrosive substances
- Status Monitoring: For MS-suffix models, verify mechanical status indicators post-installation to confirm proper operation
