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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value |
| Supply Voltage | 24 V DC (Nominal) |
| Digital Channels | 24 (Software configurable as Input or Output) |
| Communication | RS-485 via internal NORISYS 4 ExtensionBus |
| Processor | Integrated processing logic for I/O handling |
| Protection | Short-circuit proof and 24 V protected interfaces |
| Operating Temp | -25 °C to +70 °C |
| Storage Temp | -40 °C to +85 °C |
| Certification | Marine Type Approval (DNV, GL, BV, LR) |
| Hot-Swap Support | Yes (Within NORISYS 4 platform architecture) |
Product Introduction & Supply Chain Strategy
The Noris NORISYS 4 24DIO (Part No. 946007) is a high-density digital expansion module designed for the NORISYS 4 automation platform. It provides 24 flexible channels that can be software-configured as either digital inputs or outputs, making it a versatile component for complex marine alarm, monitoring, and control systems (AMCS). This module communicates with the CPU master via a high-speed RS-485 extension bus, allowing for decentralized I/O distribution across the vessel.
Strategically, maintaining a “New Surplus” NORISYS 4 24DIO is critical for fleet reliability. While the NORISYS 4 platform is robust, the I/O modules are the primary interface with field devices and are most susceptible to electrical surges or mechanical wear in harsh marine environments. By sourcing New Surplus units, procurement managers avoid the high failure risks associated with refurbished modules, such as degraded optocouplers or transistor outputs, ensuring the Total Cost of Ownership (TCO) remains low by preventing unplanned downtime during critical voyages.
- NORISYS 4 24DIO
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Power Check: Ensure the 24 V DC supply to the NORISYS 4 rack is stable.
- ESD Safety: Always wear a grounded anti-static wrist strap when handling the module.
- Configuration Backup: Use the CODESYS or NORISYS web interface to note the existing I/O configuration (Input vs. Output mapping) for the slot being replaced.
Stage 2: Removal
- If the system supports it, utilize the hot-swap functionality, though powering down the local I/O segment is always the safest practice.
- Carefully pull the module from the ExtensionBus backplane. Avoid applying torque to the connector pins.
Stage 3: Installation (Clone & Seat)
- Slide the new 24DIO module into the dedicated slot. Ensure the connectors align perfectly before applying pressure.
- Secure the module using the integrated rail or panel clips.
Stage 4: Power-On & Testing
- Once seated, check the status LEDs. A solid green light indicates successful initialization on the ExtensionBus.
- Perform an I/O loop test: trigger a digital input from the field and verify the state change on the central display. Force an output to ensure the connected relay or indicator responds correctly.
Firmware/Software Versions & Upgrade Notes
- Platform Compatibility: This module is designed for the NORISYS 4 master CPU environment.
- Software Configuration: Channel direction (Input vs. Output) is defined via the system’s CODESYS-based logic or the integrated web server. It is not set via physical jumpers.
- Firmware Note: Ensure the ExtensionBus protocol version on the module is compatible with the Master CPU firmware. Mismatches can cause high bus latency or intermittent I/O “freezing.”
Frequently Asked Questions (FAQ)
Is the NORISYS 4 24DIO hot-swappable?
Yes, the NORISYS 4 architecture supports hot-swap functionality and runtime I/O configuration, which minimizes downtime during maintenance. However, we recommend following specific shipboard safety protocols before pulling modules under load.
Can I use all 24 channels as outputs?
Yes. The 24 channels are software-configurable. You can tailor the mix of inputs and outputs to meet the specific requirements of your propulsion or auxiliary system.
How does “New Surplus” differ from “New” from the factory?
“New Surplus” units are original, unused parts that have been held in strategic inventory. They offer the same reliability and lifespan as factory-new units but are often available for immediate dispatch at a more competitive price point, which is critical for obsolete or legacy support.
Does this module require a separate power supply?
The module typically draws its logic power from the NORISYS 4 ExtensionBus, but the 24 V DC field-side power must be verified at the terminal blocks to ensure sufficient current for the configured outputs.
What happens if the communication LED is red?
A red LED usually indicates a “Bus Fail” or address conflict. Check that the module is correctly seated and that there are no duplicate IDs assigned to other I/O modules on the same RS-485 extension string.
