IS220PTCCH1A, REV G - Thermocouple Input Module

SPECIFICATIONS:

Part Number: IS220PTCCH1A, REV G
Manufacturer: General Electric
Series: Mark VIe
Function: Thermocouple Input Module
Number of Channels: 12
Thermocouple Types: E, J, K, S
Span: -8 mV to +45 mV
A/D Converter: 16-bit
Common Mode Voltage: +5 Volts
Normal Mode Rejection: 250mV
Microprocessor: AMD-K6 300 MHz
Operating temperature: -30 to 65 °C
Size: 8.26 cm wide x 4.19 cm
Technology: Surface Mount
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH-6721D

FUNCTIONAL DESCRIPTION:

IS220PTCCH1A, REV G is a Thermocouple Input Module manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. The PTCC serves as the electrical interface between one or two I/O Ethernet networks and a thermocouple input terminal board. It includes a processor board that is shared across all Mark VIe distributed I/O packs and an acquisition board dedicated to the thermocouple input functionality. The pack supports up to 12 thermocouple inputs, and when two packs are used, it can handle up to 24 inputs on TBTCH1C. In a TMR configuration with the TBTCH1B terminal board, three packs are required, each with its cold junction, but only 12 thermocouples are supported. The pack receives input via dual RJ45 Ethernet connectors and a three-pin power input. The output is through a DC-37 pin connector that directly connects to the terminal board. Visual diagnostics are indicated through LEDs, and local diagnostics can be accessed via an infrared port.

INSTALLATION:

• Securely install the desired terminal board.
• Directly connect the PTCC I/O pack to the terminal board connectors.
• Mechanically secure the packs to the threaded studs next to the Ethernet ports. The studs slip into a mounting bracket designed for the terminal board type.
• The bracket location should be changed such that there is no right-angle stress on the DC37 connector between the pack and the terminal board. The adjustment should be required just once during the product's lifetime.
• Connect one or two Ethernet wires, depending on the system configuration. The pack will work on either port. If twin connections are employed, it is common practice to link ENET1 to the network connected with the R controller.
• Plug in the connector on the pack's side to power it. It is not essential to turn off the power to the cable before connecting it because the I/O pack has an intrinsic soft-start feature that controls the current inrush on power applications.
• Use the ToolboxST application to set up the I/O pack as needed.

OPERATION:

• High-speed processor with RAM and flash memory
• Two fully independent 10/100 Ethernet ports with connectors
• Hardware watchdog timer and reset circuit
• Local ambient temperature sensor
• Infrared serial communications port
• Status-indication LEDs
• Electronic ID and the ability to read IDs on other boards
• Substantial programmable logic supporting the acquisition board
• Input power connector with soft start/current limiter
• Local power supplies, including sequencing and monitoring

ANALOG INPUT HARDWARE:

The PTCC input board receives 12 millivolt-level signals from the thermocouples connected to the terminal board. The analog input system includes six differential multiplexers, a main multiplexer, and a 16-bit analog-to-digital converter that transmits the digital data to the processor board. Each input is equipped with hardware and firmware filters, and the converter samples at a rate of up to 120 Hz.

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FREQUENTLY ASKED QUESTIONS:

What is the purpose of the Thermocouple Input Module?

The Thermocouple Input Module interfaces with thermocouples to measure temperature and converts the analog signals into digital data for processing. It connects to the terminal board and communicates with the processor board for further data handling.

How many thermocouple inputs can the module handle?

The module can handle up to 12 thermocouple inputs. In some configurations, two modules can support up to 24 inputs, and three modules can be used in a TMR configuration with the TBTCH1B terminal board, though only 12 thermocouples are supported.

What types of thermocouples are supported by the module?

The module is designed to work with various types of thermocouples, typically including standard types like J, K, T, and others. It is important to ensure compatibility with the specific thermocouple type used.