GE IS210DTTCH1A Simplex Thermocouple Input Board

GE IS210DTTCH1A Simplex Thermocouple Input Board

Part Number IS210DTTCH1A Manufacturer General Electric Country of Manufacture As Per GE Manufacturing Policy Series Mark VI/VIe Function Module Availability In StockIS210DTTCH1AA is a Simplex Thermocouple Input Terminal Board manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Control Systems. The Simplex Thermocouple Input (DTTC) terminal board is a compact terminal board designed for DIN-rail mounting. The board has 12 thermocouple inputs and connects to the VTCC thermocouple processor board with a single 37-pin cable. This cable is identical to the one used on the larger TBTC terminal board. The onboard signal conditioning and CJ reference are identical to those on the TBTC board. Two DTTC boards can be connected to the VTCC for a total of 24 inputs. 

High-density Euro-block type terminal blocks are permanently mounted to the board with two screw connections for the ground connection (SCOM). Every third screw connection is for the shield. Only the simplex version of the board is available. The terminal boards can be stacked vertically on the DIN rail to conserve cabinet space. INSTALLATION: The DTTC board slides into a plastic holder that mounts on the DIN rail. Thermocouples are wired directly to the terminal block. The Euro-Block type terminal block has 42 terminals and is permanently mounted on the terminal board. Typically #18 AWG wires are used. 

There are two screws, 41 and 42, for the SCOM (ground) connection, which should be as short a distance as possible. OPERATION: The connection of the thermocouple terminal board to the processor board, which contains the A/D converter, is shown in the following figure. VTCC provides excitation for the one cold junction (CJ) reference on the terminal board. The 12 thermocouple signals plus the CJ signal and the connection to the identity chip (ID) come through connector JA1 and are cabled to the VME control rack R.CARD ASSEM. 

Installation

Shield Screw Integration: Shield screws come pre-installed on the board, internally connected to SCOM (ground) for efficient grounding and shielding purposes. This setup simplifies the installation process by providing an integrated solution for grounding connections.

Mounting on DIN-Rail: The DTTC board is designed to seamlessly integrate into a plastic holder specifically tailored for mounting on DIN-rails. This mounting method offers stability and ease of access, making it convenient for installation in various industrial or control panel settings.

Wiring Thermocouples: Thermocouples are directly wired to the terminal block on the DTTC board. The Euro-Block type terminal block, featuring 42 terminals, is permanently affixed to the board, ensuring secure connections. Typically, #18 AWG wires are employed for this purpose, providing adequate conductivity and durability for thermocouple applications.

Grounding Connection: The terminal block includes two dedicated screws, labeled as 41 and 42, specifically designated for the SCOM (ground) connection. It's essential to ensure that this grounding connection is established over the shortest distance possible to minimize potential interference and optimize signal integrity.

Operation

Thermocouple terminal board interfaces with the processor board, which houses the Analog-to-Digital (A/D) converter. The connection layout is elucidated in the provided figure for clarity and ease of reference.

The VTCC assumes the responsibility of furnishing excitation for the single cold junction (CJ) reference featured on the terminal board. This ensures stable and accurate temperature measurements by compensating for temperature differentials across the thermocouple circuit.

Connector JA1 serves as the conduit through which the 12 thermocouple signals, along with the CJ signal and the connection to the identity chip (ID), are routed. These signals are then transmitted via cabling to the VME control rack R, where further processing and analysis take place.

This operational configuration facilitate seamless communication between the thermocouple terminal board and the processor board, enabling the acquisition of precise temperature data essential for monitoring and controlling various industrial processes.