IS200DTBAH2A - Contact Input Termination Module

SPECIFICATIONS:

Part Number: IS200DTBAH2A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Contact Input Termination Module
Number of inputs: 6
Number of outputs: 2
Technology: Surface Mount
Analog output current: 0-20 mA
Operating temperature: -30 to 65°C
Size: 23.8 cm high x 8.6 cm wide
Repair: 3-7 Day
Availability: In Stock
Weight: 2lbs
Country of Origin: United States
Manual: GEH-6153

FUNCTIONAL DESCRIPTION:

IS200DTBAH2A is a Contact Input Termination Module manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. Q11, Q21, and Q51 are where you'll find the Contact Input Termination Module (DTBA). Within the same digital core, DTBA links the first 46 contact inputs to TCDA. For failsafe contact input functionality, the inputs in the TCDA IO Configuration can be set up to invert the contact sensation. The TB2 terminal board allows for either 125 V dc from the PD core or 24 V dc from the P core to be used as the excitation voltage for contact inputs (DTBA and DTBB terminal boards in the digital cores). The preferred contact input excitation choice is implemented at the manufacturing.

CONTACT INPUTS:

Jumpers on the DTBA and DTBB terminal boards can be used to isolate field grounds by cutting off the interrogation voltage. In groups of eight contact inputs, they are connected. Only while the turbine is not in operation should these jumpers be replaced. The TCDA board, which is in Location 1 of the digital I/O core, optically isolates each contact input.

FEATURES:

• One notable feature of the DTBA module is its ability to provide failsafe contact input functionality. This means that the inputs configured in the TCDA IO Configuration can be set up to invert the contact sensation. This inversion ensures that the system responds appropriately in the event of a contact failure or abnormal condition, enhancing the safety and reliability of the overall system operation.

• The module is designed to receive excitation voltage for the contact inputs from either the PD (Power Distribution) core at 125 V dc or the P core at 24 V dc. The TB2 terminal board allows for the selection of the excitation voltage source. Depending on the specific configuration and requirements of the system, either 125 V dc or 24 V dc is chosen as the preferred excitation voltage for the contact inputs. This choice is made during the manufacturing process to ensure compatibility and optimal performance.

• The Contact Input Termination Module provides an essential interface for contact inputs in the Mark VIe Series control system. Its integration within the digital core facilitates efficient and reliable communication, enabling effective monitoring and control of critical processes.

• The Contact Input Termination Module (DTBA) and its counterpart DTBB feature jumper settings on their respective terminal boards that allow for the isolation of field grounds. By cutting off the interrogation voltage, these jumpers effectively isolate the contact inputs from external electrical interference. It's important to note that these jumper settings are typically connected in groups of eight contact inputs.

• However, it is crucial to exercise caution when replacing these jumpers. They should only be replaced while the turbine is not in operation. This precaution ensures the safety of personnel and prevents any potential damage to the system. Therefore, any modifications or adjustments to the jumper settings should be carried out during maintenance or when the turbine is properly shut down.

• To provide further protection and ensure reliable operation, each contact input is optically isolated by the TCDA (Turbine Control Data Acquisition) board. The TCDA board is located in the first position of the digital I/O core. The optical isolation feature acts as a barrier between the contact inputs and the rest of the system, preventing any electrical noise or interference from affecting the proper functioning of the control system.

• The optical isolation of each contact input enhances the overall performance and reliability of the system by maintaining signal integrity and minimizing the risk of cross-talk or interference between different inputs. This isolation feature is designed to provide an additional layer of protection, ensuring accurate and reliable detection of contact states in the control system.

WOC has the largest stock of GE Distributed Control System Replacement Parts. We can also repair your faulty boards. WORLD OF CONTROLS can also supply unused and rebuilt backed-up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on any parts and repairs, kindly get in touch with our team by phone or email.

FREQUENTLY ASKED QUESTIONS:

Where is the module located within the system?

The module is specifically located at Q11, Q21, and Q51 within the GE Mark VIe system.

What is the role of components in the system?

It serves as a link between the first 46 contact inputs and the TCDA module, enabling seamless communication and integration between different components of the control system.

Does the board provide failsafe contact input functionality?

Yes, the board provides failsafe contact input functionality. The inputs configured in the TCDA IO Configuration can be set up to invert the contact sensation, ensuring appropriate system response in the event of a contact failure or abnormal condition.