Part Number: 5437-281
Product type: Field Terminal Module
Resolution: 14 bit converter
Temperature Coefficient: 12 ppm/degree C
Availability: In stock
Country of Manufacture: United States (USA)
5437-281 is an analog FTM developed by Woodward. The module incorporates high-quality analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) that ensure accurate and precise conversion between analog and digital signals. This enables seamless integration of analog signals into digital control systems, providing the necessary interface for monitoring and controlling critical variables within the industrial processes.
- As a Field Terminal Module, it plays a pivotal role in facilitating efficient and organized connections.
- With a 37-pin connector, this module ensures secure and reliable electrical connections.
- Versatile and dependable component that streamlines connections, provides analog signal handling capabilities, and offers ease of use through standard screw clamp terminals.
- This FTM is its 37-pin connector, which provides a secure and reliable connection to other components in the system. This ensures that data can be transmitted quickly and accurately between different devices, enabling seamless communication and coordination across the entire system.
- In addition, the module is designed to conform to Standard specifications, which means that it can be easily integrated with other Standard-compatible systems. This makes it a highly versatile solution that can be used in a variety of applications and environments.
- It also features screw clamp terminals, which provide a secure and reliable connection to external wiring. This ensures that the module can be easily and safely installed, minimizing the risk of wiring errors and other issues.
- The Dataforth FTM is used in conjunction with the Dataforth Module. To connect the FTM to the Dataforth Module, a single MicroNet High Density Analog/Discrete connection is used. Each FTM has 12 analog input channels and 4 analog output channels. Each input channel can be configured independently using a plug-in standard isolated Dataforth SCM7B converter that has been adapted to satisfy Woodward's bandwidth and input temperature range requirements.
- Each module can be plugged into any of the FTM's 12 channels. Each plug-in module converts the input signal to a voltage ranging from 1 to 4 volts. The FTM and its plug-in modules do not require calibration. The plug-in modules are powered directly through the cable connector, thus no external power connections to the FTM are required.
- For sourcing 4-20 mA inputs, twelve +24 Vdc connections are available. Each connection is safeguarded with a 0.1 A fuse (F3 - F14). Jumpers P3-P1 are used to configure the module for self-powered or loop-powered configurations.
TMR CPU Theory
- The fault tolerance architecture of this control system is designed to detect and respond to control-related faults in a robust and reliable manner. The primary objective is to ensure continuous operation by detecting faults, notifying users about them, and facilitating online service or replacement of faulty modules and transducers.
- The CPU fault tolerance logic of 3-2-0 means that the control system can function normally even if any one of the three CPU modules fails or is removed. The fault tolerance logic allows for redundancy and fault detection, enabling seamless operation in the event of a CPU failure. This redundancy ensures that critical control functions remain operational and uninterrupted.
- Similarly, the power supply fault tolerance logic of 2-1-0 enables the control system to operate normally even if one of the two power supplies fails or is removed. This redundancy in the power supply ensures that there is always a backup power source available to sustain the operation of the control system. It provides an extra layer of reliability, preventing power supply failures from causing system downtime.
- The fault tolerance of the I/O modules can be customized to meet the specific reliability requirements of the application. This customization allows for fine-tuning the fault tolerance mechanisms based on the criticality of different I/O modules and the desired level of redundancy. By customizing the I/O fault tolerance, the control system can optimize its performance and reliability to match the specific application requirements.
- In the TMR (Triple Modular Redundant) Main Chassis, there are three isolated kernel sections, labeled A, B, and C. Each kernel section houses a Kernel Power Supply module, a CPU module, and provides four VME slots for I/O modules. A single motherboard supplies nine electrically isolated data paths, ensuring isolation and protection of data communication. Each CPU has a dedicated data path to its associated VME modules and two separate data paths, one to each of the other CPU modules. The presence of six data paths between the CPUs enables redundancy and error checking. This redundancy ensures that data communication remains robust and reliable, minimizing the risk of data loss or corruption.
- By incorporating fault tolerance mechanisms, such as redundant CPUs, power supplies, and customizable I/O fault tolerance, the control system provides a resilient architecture that can detect and mitigate faults without compromising system functionality. This fault tolerance design enhances the system's reliability, fault recovery, and continuous operation, ensuring consistent and dependable control in various applications.
The Field Terminal modules (FTMs) of the system are designed to be mounted on a standard DIN (35 x 7.5) rail, which is not included with the components. To ensure proper installation, follow these steps for mounting the FTMs:
- Begin by cutting a DIN rail strip to the desired length. This strip will be mounted onto a panel. Make sure to allocate enough space between the DIN rail and other objects to ensure accessibility.
- Drill and tap at least two holes per 300 mm (12 in) along the DIN rail strip. These holes should be suitable for the size of the hardware you intend to use. Secure the DIN rail onto the panel using appropriate screws and washers.
- It's important to ground the mounting panel effectively to the protective earth through the cabinet structure or low RF impedance ground straps. Similarly, ensure that the DIN rail is well grounded to the panel. To achieve low RF impedance, the length of the ground strap should not exceed four times the cross-sectional circumference.
- Confirm that the DIN rail is at the same earth ground potential as a panel that is grounded to earth. If not, establish a connection between the DIN rail and earth ground using a 4 mm2 (12 AWG) green/yellow wire or braid. Keep this wire or braid as short as possible to optimize performance.
- Snap the FTMs onto the DIN rail, ensuring they are securely attached.
- Place ground terminals adjacent to the FTMs on the DIN rail.
- Establish a connection between each ground terminal and the FTM earth ground terminal using a 4 mm2 (12 AWG) wire. Tighten to a torque of 0.5 to 0.8 Nm (0.37 to 0.59 lb-ft). To optimize high-frequency grounding, maintain a short length for this wire, not exceeding 150 mm (6 inches).
- In specific scenarios, it might be necessary to remove insulation from the cable between the FTM or relay box and the VME Module. To ground the cable, utilize a metal P-clip around the cable, ensuring it's within approximately 300 mm (12 inches) of the relay box connector. Note that this connection is an additional measure and should not replace the grounding specified in step 7.
- Once both the FTM and the VME module are securely installed, proceed to install the cables that connect them, ensuring proper alignment and connection.
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Frequently Asked Questions
What is 5437-281?
It is a Field Terminal Module developed by Woodward.
Is calibration required for the FTM or its plug-in modules?
No, calibration is not required for the FTM or its plug-in modules.
How are the plug-in modules powered?
The plug-in modules are powered directly through the cable connector, eliminating the need for external power connections to the FTM.
Are there any provisions for +24 Vdc connections?
Yes, there are twelve +24 Vdc connections available on the FTM for sourcing 4-20 mA inputs. Each connection is protected with a 0.1 A fuse (F3 - F14).
How can the module be configured for self-powered or loop-powered setups?
Jumper configurations on the FTM, specifically jumpers P3 through P1, are used to configure the module for self-powered or loop-powered setups. Refer to Chapter 9 for the proper jumper configurations.