This assembly enables accurate conversion, protection, and distribution of analog and digital signals. Meanwhile, it simplifies wiring complexity, reduces signal interference, and effectively addresses issues like signal attenuation and electromagnetic interference. By doing so, it ensures the control system can accurately monitor and control on-site equipment, serving as a key guarantee component in the signal transmission link of industrial automated production.
Signal Type Support
Compatible Analog Input (AI): Supports industry-standard analog signals such as 4-20mA and 0-10V, and is compatible with on-site detection equipment like temperature sensors and pressure transmitters.
Compatible Analog Output (AO): Capable of transmitting 4-20mA and 0-10V control signals for driving actuators including control valves and frequency converters.
Compatible Digital Input (DI): Supports dry contact and wet contact signals, and is suitable for switch-type equipment such as limit switches and buttons.
Compatible Digital Output (DO): Can output relay contact signals or transistor signals to control devices like indicator lights and contactors.
Terminal Specifications
Terminal Type: Adopts Phoenix-style terminals with screw-fastened connections, ensuring strong wiring stability.
Terminal Quantity: A total of 32 terminal interfaces (including mixed input/output configuration) to meet the simultaneous connection needs of multiple devices.
Wire Gauge Range for Wiring: Supports 0.5-2.5mm² single-strand/multi-strand copper core cables, compatible with common wiring specifications in industrial on-site environments.
Electrical Performance
Insulation Resistance: ≥100MΩ (under 500VDC), effectively preventing leakage current and signal crosstalk.
Withstand Voltage: 2500VAC (50/60Hz) for 1 minute without breakdown or arcing, suitable for industrial high-voltage environments.
Signal Transmission Accuracy: Analog signal transmission error ≤0.1%, ensuring the accuracy of detection and control signals.
Electromagnetic Compatibility (EMC): Complies with EN 61000-6-2 (Immunity for Industrial Environments) and EN 61000-6-4 (Emission Limits for Industrial Environments) standards, featuring strong anti-electromagnetic interference capability.
Power Requirements
Auxiliary Power Supply: No independent external power supply is required; power is drawn from the control system backplane bus (compatible with the bus specifications of devices such as Honeywell C300 controllers).
Power Consumption: Power consumption ≤5W under normal operating conditions; the low-power design reduces the overall energy consumption of the system.
Environmental Adaptability
Operating Temperature: -40°C to +70°C, adaptable to extreme high and low-temperature industrial scenarios (e.g., outdoor control cabinets in northern winter, high-temperature workshops in southern summer).
Relative Humidity: 5% to 95% (non-condensing), resistant to humid environments (e.g., food processing workshops, chemical wet areas).
Protection Rating: IP20 (when panel-mounted), effectively preventing dust ingress and accidental finger contact.
Physical Specifications
Dimensions: 160mm (width) × 100mm (height) × 80mm (depth); the compact design is compatible with standard 19-inch industrial cabinets.
Mounting Method: DIN rail mounting (compatible with 35mm standard DIN rails) or panel screw fixing, enabling flexible and convenient installation.
Weight: Approximately 350g; the lightweight design reduces the load-bearing pressure on the cabinet.
Advantages and Features
High Signal Stability with Strong Anti-Interference Capability
Adopting a differential signal transmission design and a metal shielded housing, it effectively suppresses electromagnetic interference (such as interference generated by motors and frequency converters) and radio frequency interference in industrial on-site environments. The analog signal transmission error is ≤0.1%, and the digital signal response delay is ≤1ms, ensuring "zero-distortion" transmission of signals from on-site equipment to the controller.
Simplified Wiring and High Maintenance Efficiency
Integrating 32 terminal interfaces, it supports mixed access of multiple types of signals (AI/AO/DI/DO), eliminating the need to configure separate terminal modules for different signals and significantly reducing the number of wires in the cabinet. Meanwhile, the terminals are clearly labeled and feature a screw-fastening design, enabling quick identification of interfaces during wiring and subsequent maintenance. This reduces maintenance time by more than 40%.
Industrial-Grade Durability and Long Service Life
The housing is made of ABS flame-retardant material (complying with UL94 V-0 flame-retardant standard), and the terminals are made of tin-plated copper (resistant to oxidation and corrosion). It can withstand extreme temperatures ranging from -40°C to +70°C and a humidity environment of 5%-95%. The Mean Time Between Failures (MTBF) is ≥100,000 hours, reducing the frequency of equipment replacement and operation and maintenance costs.
Wide Compatibility and Strong Adaptability
It is not only compatible with Honeywell's own control systems such as Experion PKS and PlantScape but also can be connected to third-party control systems like Siemens S7 series and Rockwell ControlLogix through signal adaptation. No additional signal converters are required, which reduces the complexity and cost of system integration.
Safety Protection to Reduce Risks
It is equipped with overvoltage protection (automatically cutting off the signal path when the input voltage exceeds 30V) and overcurrent protection (triggering protection when the loop current exceeds 50mA) functions. These functions can prevent damage to the control system caused by on-site equipment failures (such as sensor short circuits and actuator overloads), improving the safety of the overall system.
Frequently Asked Questions (FAQs)
Q: Does this terminal assembly require an independent power supply?
A: No, it does not. The CC-PCNTOX 51308307-175 draws power from the controller backplane via the control system bus interface on its rear side. There is no need to connect an additional external power supply, which simplifies wiring and eliminates power adaptation issues.
Q: Does the terminal assembly support hot swapping? Can it be replaced while the system is in operation?
A: Hot swapping is not supported. Before replacing the assembly, you must first disconnect the power supply of the control system and on-site equipment. Failure to do so may cause bus signal interruption or equipment damage. It is recommended to replace the assembly during the shutdown maintenance period of the production line and back up the system configuration parameters in advance.
Q: How to verify if the terminal wiring is correct? What are the impacts of incorrect wiring?
A: The correctness of wiring can be confirmed in the following ways:
① Check the correspondence between cables and terminals against the "Terminal Definition Table" in the product manual;
② After power-on, ensure that the assembly’s fault indicator light (red) does not illuminate and that the control system can normally receive/send signals. Incorrect wiring may result in no signal transmission or signal distortion. In severe cases, it may trigger the protection mechanism due to overcurrent/overvoltage, or even damage the terminal assembly or controller.
Q: Can this assembly be used in explosive-proof areas (e.g., explosive-proof zones in chemical workshops)?
A: This assembly itself does not have explosive-proof certification and cannot be directly installed in explosive-proof areas (such as Zone 1 or Zone 2 hazardous areas). If it needs to be used in explosive-proof scenarios, the assembly must be installed in an explosion-proof control cabinet (meeting the corresponding explosion-proof rating, e.g., Ex d IIB T4 Ga), and the on-site equipment must be explosion-proof type to ensure the entire system complies with explosive-proof requirements.
Q: What is the product warranty period? How to handle failures occurring within the warranty period?
A: The Honeywell CC-PCNTOX 51308307-175 comes with a standard 1-year warranty (counting from the product’s manufacturing date). If a failure occurs within the warranty period due to product quality issues (excluding human damage or improper installation), you can contact Honeywell’s official after-sales service or authorized distributors. Provide the product model, serial number, and failure description; after verification through inspection, you can enjoy free repair or replacement services.
Q: What to do if the terminals are oxidized or have poor contact?
A: First, cut off the power and disconnect the cables. Gently polish the oxide layer on the terminal surface with fine sandpaper (400 grit or higher), then wipe the terminals clean with anhydrous ethanol. When rewiring, ensure the cable stripping length is appropriate and the screw tightening torque reaches 0.5-0.8 N・m. If the terminals are severely damaged, it is recommended to replace the entire terminal assembly to avoid signal abnormalities caused by poor contact.
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