SPECIFICATIONS
Part No.: IS200TPYRH1ACC
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Number of channels :24
Size: 10.16 cm wide x 33.02 cm high
Span: -8 mV to +45 mV
Product Type: Pyrometer Terminal Board
Availability: In Stock
Series: Mark VI
Functional Description
IS200TPYRH1ACC is a pyrometer terminal board developed by GE. It is a part of Mark VI control system. The Pyrometer terminal board (TPYR) serves as the interface for connecting two infrared Turbine Blade Temperature Measurement System (TBTMS) thermometers, commonly referred to as pyrometers, and two KeyPhasor proximitor probes for shaft reference. This setup results in the generation of 10 voltage signals representing various temperature and shaft reference parameters. These 10 voltage signals are then transmitted to the VPYR board for further processing.
Features
- The VPYR board is capable of sampling these signals at an impressive rate of up to 200,000 samples per second, enabling rapid and accurate data acquisition.
- The terminal board offers both simplex and Triple Modular Redundant (TMR) capability, providing flexibility in system configuration and redundancy options. This ensures reliability and resilience in temperature monitoring and shaft reference applications, critical for turbine operation and safety.
- The terminal board features three DC-37 connectors, designated for connection to the I/O boards. These connectors offer versatility in system configuration, accommodating both simplex and Triple Modular Redundant (TMR) setups.
- In simplex configurations, the input signals can be connected through a single connector, typically the JR1 connector. This setup is suitable for standard applications where redundancy is not required, providing a straightforward and efficient wiring solution.
- For TMR applications, all three connectors are utilized. The input signals are fanned out to the three connectors, designated for the R, S, and T controls. This redundancy scheme enhances system reliability by ensuring continuous operation even in the event of a component failure. The use of multiple connectors in TMR setups allows for parallel processing of input signals, minimizing the risk of data loss or system downtime.
Installation
- Wiring Signal Inputs: The signal inputs are directly wired to two removable I/O terminal blocks. Each terminal block is securely fastened with two screws and accommodates
- 24 terminals suitable for wires up to 12 AWG. Adjacent to each terminal block, a shield termination strip, connected to chassis ground, is provided for effective shielding of the signals.
- Connecting Pyrometers and KeyPhasor Probes: The two optical pyrometers are connected to the first terminal block. The two KeyPhasor probes are connected to the second terminal block. This arrangement ensures clear and organized wiring, facilitating easy identification and troubleshooting if necessary.
- Power Supply for Sensors: The 28 V DC power supply for the sensors is supplied from the I/O boards through the JR1, JS1, and JT1 connectors. This ensures that the sensors receive the necessary power for their operation and accurate measurement of temperature and shaft reference signals.
Product Attributes
- Current Inputs from Pyrometers:
- Signal Characteristics:
- Pyrometer outputs consist of a 4-20 mA current across a 100 ohm resistor.
- Common Mode Rejection (CMR):
- DC: Up to ±5 V DC, with a CMRR of 80 dB.
- AC: Up to ±5 V peak, with a CMRR of 60 dB.
- KeyPhasor Inputs:
- Signal Characteristics:
- Input voltage range: -0.5 to -20 V DC.
- Common Mode Rejection (CMR):
- Maximum rejection (MR) of 5 V, with a CMRR of 50 dB at 50/60 Hz.
- Device Excitation (Outputs) , Pyrometer Power Supplies:
- Each pyrometer is equipped with individual power supplies, which are current-limited.
- P24V Source:
- Diode-selected power source ranging from +22 to +30 V DC.
- Current limit: 0.175 A.
- N24V Source:
- Diode-selected power source ranging from -22 to -30 V DC.
- Current limit: 0.175 A.
The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS200TPYRH1ACC?
It is a Pyrometer Terminal Board developed by GE under the Mark VI series.
What is the function of the keyPhasor probes in the system?
The keyPhasor probes are utilized to provide shaft position reference in the system. Two keyPhasor probes are employed, with one serving as a backup.
How do keyPhasor probes operate?
KeyPhasor probes, along with associated circuitry, function similarly to those used with TVIB/VVIB. They detect a shaft keyway or pedestal, offering a precise time stamp for blade identification, thereby providing an angle reference.
Why are two keyPhasors used, and how are they configured?
Two keyPhasor probes are employed to ensure redundancy and reliability in shaft position sensing. In the configuration, one keyPhasor probe serves as the primary reference, while the other acts as a backup, enhancing system robustness.
