GE IS230TNEAH1A - Buy, Repair, and Exchange From Unisys

TECHNICAL SPECIFICATIONS FOR GE - IS230TNEAH1A

IS230TNEAH1A is an Emergency Trip DIN-Rail Module manufactured and designed by General Electric. It is a part of the Mark VIe Control System. The primary purpose of the component is to monitor and respond to critical events or abnormal conditions within the system. In the event of an emergency or a predefined trip condition, the module takes swift and decisive action to initiate an emergency shutdown, preventing any potential damage to equipment or personnel. The DIN-Rail form factor of the module makes it easy to mount within control cabinets or enclosures, providing a compact and space-saving solution for emergency trip functionality. This streamlined design allows for efficient integration into existing control systems, promoting ease of installation and maintenance.

Installation

The system incorporates multiple variants, each serving specific functions and features tailored to the diverse needs of industrial applications. These variants may include different configurations, software settings, or hardware options, allowing the system to adapt to a wide range of requirements.

To ensure the system's safety and reliability, voltage detection and the breaker relay are skillfully wired to the I/O terminal blocks TB1. These terminal blocks act as essential connection points for input and output signals, efficiently interfacing with various components and devices within the system. By using TB1 for these critical connections, the system ensures accurate voltage monitoring and seamless operation of the breaker relay, contributing to enhanced safety and control over electrical circuits.

Passive pulse rate pick-ups, on the other hand, are connected to TB2. This terminal block is specifically designated for accommodating the pick-ups, which are used for measuring and detecting pulse rates from various mechanical or electrical devices. By dedicating TB2 for these connections, the system ensures precise data acquisition and real-time monitoring of important parameters, enabling effective control and analysis.

Both TB1 and TB2 terminal blocks are securely held in place with two screws each, providing a reliable and stable connection platform for the attached wires. The two-screw mounting mechanism ensures that the terminal blocks remain firmly in place even in dynamic and demanding industrial environments, preventing any accidental disconnections or disruptions.

Each terminal block features 24 terminals, which are designed to accept wires up to #12 AWG in size. This versatility allows the system to accommodate a broad range of wire types and sizes, facilitating easy integration of various devices and sensors. The ability to handle #12 AWG wires ensures that the system can support higher current-carrying capacities, making it suitable for applications with higher power requirements.

Additionally, a shield termination strip is thoughtfully positioned immediately to the left of each terminal block. This strip is attached to the chassis ground, providing a means to ground the shielded cables and wires connected to the terminal blocks. The presence of the shield termination strip enhances electromagnetic interference (EMI) protection and minimizes signal noise, ensuring accurate data transmission and reducing the risk of signal degradation.

Contact outputs

The contact outputs in the circuit exhibit polarity sensitivity, which means that the direction of current flow is critical for their proper operation. Therefore, it is crucial to wire the circuit with great care to prevent any potential damage to the relays.

To avoid damaging the relays, meticulous attention must be given to the wiring process. Proper identification and orientation of the contact output terminals are essential. Ensuring that the correct polarity is maintained throughout the wiring is of utmost importance. Mistakes in connecting the wrong polarity can lead to unwanted consequences, such as overheating of the coils and contacts, premature wear and tear, and even complete failure of the relays.

Moreover, the circuit lacks built-in contact or solenoid suppression, which means that the user must take additional measures to protect the relays and their contacts from voltage spikes and back-emf (electromotive force) generated during the switching process. When a relay coil is de-energized, it can produce a voltage spike that can cause arcing across the contacts. This arcing can lead to rapid wear of the contacts and eventually result in failure.

To address this issue, external solenoid suppression must be added to the circuit. Solenoid suppression refers to the use of components, such as diodes or suppressor circuits, to protect the relay contacts from voltage spikes and back-emf. These components act as a pathway for the induced voltage, safely redirecting it away from the relay contacts.

By implementing external solenoid suppression, the user can significantly enhance the reliability and lifespan of the relays and their contacts. This preventive measure ensures that any voltage spikes generated during the switching process are effectively absorbed and dissipated, preventing damage and minimizing arcing.

Handling Precautions

To prevent damage from static electricity, adhere to static-sensitive handling techniques when dealing with all boards. When handling boards or components, wear a wrist grounding strap, but only after boards or components have been removed from potentially energized equipment and are situated at a normally grounded workstation. Printed wiring boards may include static-sensitive components. Consequently, GE delivers all replacement boards in antistatic bags. Follow these guidelines when handling boards:

Store boards in antistatic bags or boxes.

Utilize a grounding strap when handling boards or board components (in accordance with prior caution criteria).

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