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Details input specifications including range, impedance, CMRR, and temperature coefficient.
Specifies the physical size of the unit in HxWxD format.
Details input specifications including range, impedance, CMRR, and temperature coefficient.
Specifies the physical size of the unit in HxWxD format.
The Multispan MI-631-24 is a signal isolator designed to provide robust and reliable signal conditioning in industrial environments. Its primary function is to isolate signals, ensuring the integrity and safety of connected equipment by preventing unwanted electrical interference and ground loops. This device is particularly useful in applications where different parts of a system operate at varying electrical potentials or where noise immunity is critical.
The MI-631-24 operates as a 3-way optical isolator, providing galvanic separation between the supply, input, and output circuits. This optical isolation is a key feature, as it effectively breaks the electrical connection while allowing the signal to pass through, thereby eliminating common mode noise and preventing damage from voltage surges or ground potential differences. The device accepts a 4-20 mA DC input signal, which is a standard in industrial control systems due to its inherent noise immunity and ability to transmit signals over long distances without significant loss. Once the input signal is received, the isolator processes it and provides a corresponding 4-20 mA DC output. This ensures compatibility with a wide range of industrial instrumentation, including PLCs, DCSs, and other control devices.
A crucial aspect of its functionality is the linearization of the output. This means that the device accurately converts the input signal to the output signal with a linear relationship, ensuring precise and predictable control. This linearization is essential for maintaining accuracy in measurement and control loops, where even small deviations can lead to significant operational errors. Furthermore, the MI-631-24 incorporates zero and span correction facilities. These features allow for fine-tuning of the output signal to match specific application requirements, compensating for any sensor inaccuracies or system offsets. This adjustability is performed through trim ports, providing a convenient way to calibrate the device in the field.
The device boasts a fast response time, typically less than 150 milliseconds. This rapid response is vital in dynamic control systems where timely signal processing is necessary to maintain stability and control. A slow response could lead to system lag, oscillations, or even instability, making the fast response of the MI-631-24 a significant advantage in critical applications. The high level of isolation, rated at 1.5KV AC for at least one minute, underscores its capability to protect equipment from substantial electrical disturbances, enhancing overall system reliability and safety.
The MI-631-24 is designed for ease of installation and integration into existing industrial setups. Its compact dimensions and DIN rail mounting capability make it suitable for installation in control cabinets or enclosures where space is often at a premium. The DIN rail mounting mechanism is straightforward: simply raise the clamp at the back, place the instrument on the rail, and then release the clamp to secure it. Proper fitting can be confirmed by gently pulling the instrument outwards. To remove the device, the clamp is raised again to release it from the rail. This user-friendly mounting system simplifies both initial installation and future maintenance or replacement.
The device's terminal connections are clearly labeled for supply, input, and output, facilitating correct wiring. The supply voltage is 24V DC, a common power source in industrial control systems, ensuring broad compatibility. The input and output are both 4-20 mA DC, which simplifies integration into standard current loop systems. The presence of a "POWER ON" indicator provides immediate visual confirmation of the device's operational status, aiding in troubleshooting and system monitoring.
For optimal performance and safety, several usage guidelines are provided. It is crucial to ensure that the equipment, once installed, is not exposed to close proximity to heating sources, caustic vapors, oil steam, or other unwanted process byproducts, as these can negatively impact its performance and longevity. Additionally, connecting anything to unused terminals should be avoided to prevent potential malfunctions or safety hazards. When wiring, it is imperative to keep the power supply to the equipment OFF to prevent the risk of electric shock. Terminals should not be touched while power is being supplied. To minimize electromagnetic interference, it is recommended to use wires with adequate rating and twists of equal size, making the shortest possible connections. Cables used for power connection should have a cross-section of at least 1mm and insulation capacity of at least 1.5kV. Installing a circuit breaker or mains switch between the power source and the supply terminal is also recommended to facilitate easy power ON/OFF control, ensuring it is conveniently accessible to the operator.
Maintaining the MI-631-24 is straightforward, focusing on basic cleanliness and adherence to safety protocols to ensure its long-term reliability and performance. Regular cleaning of the equipment is recommended to prevent blockage of its ventilating parts. This is crucial for dissipating heat and maintaining optimal operating temperatures, thereby extending the device's lifespan.
When cleaning, it is advised to use a clean, soft cloth. Harsh cleaning agents, such as isopropyl alcohol or any other aggressive chemicals, should be avoided as they could potentially damage the device's casing or internal components. Gentle cleaning ensures that the device remains in good condition without compromising its integrity.
A critical maintenance instruction is that the fusible resistor must not be replaced by the operator. This indicates that any internal component failures or issues requiring such replacements should be handled by qualified service personnel, preventing untrained individuals from attempting repairs that could lead to further damage or safety risks.
Beyond these specific maintenance points, general safety precautions are emphasized. All safety-related codifications, symbols, and instructions in the manual must be strictly followed to ensure the safety of operating personnel and the instrument. Handling the equipment in a manner not specified by the manufacturer could impair the protection it provides. Prior to installation and operation, complete instructions should be read. The device should be used and stored within the specified ambient temperature and humidity ranges to ensure its proper functioning and longevity. These guidelines collectively contribute to the safe and effective operation of the Multispan MI-631-24 signal isolator throughout its service life.
General| Coil Voltage | 24VDC |
|---|---|
| Contact Form | DPDT |
| Mechanical Life | 10, 000, 000 operations |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Release Time | 5ms max |
| Electrical Life | 100, 000 operations |
