IC3600SSZB1C - Speed Control Board

SPECIFICATIONS

Part No: IC3600SSZB1C
Manufacturer: General Electric
Function: Speed Control Board
Series: Mark I and II
Repair: 3-7 Day
Availability: In Stock
Country of Manufacturer: United States (USA)

Functional Description

IC3600SSZB1C is a Speed Control Board developed by GE. It is a part of Mark I and II control system. SSZB card is capable of processing speed feedback, modulating control signals, and offering customization through jumper settings and gain adjustments. Its features are essential for achieving precise control and ensuring the smooth and safe operation of machines and systems.

Features

The SSZB card is a critical component in control systems, especially in applications where precise speed and load control are essential. It plays a key role in modulating speed and load based on input signals.

• Pulse Rate to Analog (PR/A) Converter: It contains a PR/A converter that receives an alternating signal at its input IN and provides an output signal ranging from 0 to 11 volts at output N. This output signal represents the speed feedback from the controlled machine or system.
• Speed Feedback Signal: The speed feedback signal obtained from the PR/A converter is a crucial component in the control system. It reflects the actual speed of the machine or system under control.
• Modulation of NVCE: The speed feedback signal is summed with the reference signal and other input signals to modulate NVCE. This modulation process is essential for achieving the desired speed and/or load of the controlled machine.
• Jumper Settings for Speed Ranges: Jumpers between FA, FB, and FC are used to program the PR/A converter. These jumpers determine the speed range over which the converter operates, enabling it to provide 0 to 11 volts for different speed machines, ranging from 0 to 3600 RPM.
• Bias Control with Jumper SJ: The SJ jumper can apply a positive bias to SJ, influencing NVCE and forcing it to the minimum level. This can be helpful for specific control scenarios and adjustments.
• Overspeed Test Pushbutton: An overspeed test pushbutton is provided, which introduces a negative bias into SJ. This action increases NVCE and facilitates overspeed testing, a critical safety feature in many systems.
• Jumper Settings for Transfer Function: Jumpers are made between pin CC and CE to set the desired transfer function. This feature allows for customization of the card's response to input signals.
• Potentiometer RI 14 for Gain Adjustment: Potentiometer RI 14 offers a means of adjusting the gain, allowing fine-tuning of the card's response to achieve the desired control characteristics.
• Digital Setpoint (DSP) Inputs: The card provides inputs SPA and SPB for the digital setpoint (DSP) signal. These inputs play a crucial role in setting and adjusting the desired operating parameters for the controlled system.
• Differentiator Circuit for Acceleration Control: The card features a differentiator circuit that monitors the speed feedback signal N and modulates VCE. This modulation is designed to limit the accelerations of the turbine, ensuring smooth and controlled operation. The output AC is a "1" when VCE is under acceleration control.
• Acceleration Control Rate Adjustment: By connecting HR to ACOM, the acceleration control rate can be halved, allowing for adjustments in how quickly the system responds to acceleration changes.

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FREQUENTLY ASKED QUESTIONS

What is IC3600SSZB1C?
It is an Speed Control Board developed by GE

How does the card modulate speed and load in a control system?
It takes the speed feedback signal and combines it with a reference signal and other inputs to modulate NVCE, achieving the desired speed and load control.

What is the role of jumpers on the card, and how do they affect its operation?
Jumpers on the SSZB are used to program the PR/A converter, determining the speed range it operates within. These jumpers allow the card to adapt to different speed machines, ranging from 0 to 3600 RPM.

How can the SJ jumper be used to influence control signals?
The SJ jumper can apply a positive bias to SJ, which impacts NVCE and forces it to the minimum level. This feature can be useful in specific control scenarios and adjustments.

What is the purpose of the overspeed test pushbutton, and how does it work?
The overspeed test pushbutton introduces a negative bias into SJ, increasing NVCE. This function is provided for overspeed testing, a critical safety feature in many systems to ensure safe operation.

How can jumpers between pin CC and CE be used to customize the card's operation?
Jumpers between pin CC and CE allow users to set the desired transfer function, enabling customization of the card's response to input signals.

What role does potentiometer RI 14 play in the card, and how can it be adjusted?
Potentiometer RI 14 is used for gain adjustment. It allows users to fine-tune the card's response, ensuring that the control characteristics align with specific requirements.

What are SPA and SPB inputs, and how do they contribute to the card's operation?
SPA and SPB inputs provide the DSP signal for setting and adjusting desired operating parameters within the control system.