INVENSYS EUROTHERM HEATER POWER CONTROLLER 7100A 25A SELF 12:32

1. Product Name & Model:

• Manufacturer: Invensys Eurotherm (A leading global manufacturer of industrial automation, measurement, and control products. The Eurotherm brand is now part of Watlow).

• Product Line: 7100A Series

• Function: Heater Power Controller (Also commonly known as a Solid-State Relay – SSR – or a Power Controller).

• Key Specification: 25A (25 Amperes). This defines its current-carrying capacity.

2. Key Features & Functionality:

• Purpose: This device is used to precisely control the electrical power delivered to a heating element (a heater) in an industrial process. It acts as a high-speed electronic switch.

• Technology: It is a Solid-State Relay (SSR), meaning it has no moving parts (unlike mechanical contactors). It uses semiconductor components (like thyristors – SCRs or Triacs) to switch the power on and off very rapidly.

• Control Method: It receives a low-power control signal (typically a 4-20 mA analog signal or a 0-10 V DC signal) from a temperature controller or process controller. Based on this signal, it proportionally adjusts the power output to the heater to maintain a precise temperature.

• “SELF” Key Feature: The term “SELF” in the model description is crucial. It signifies that this is a self-contained unit.

  • Heat Sink: It has its own integrated aluminum heat sink (the finned casing) to dissipate the heat generated during operation.

  • Mounting: It is designed for easy mounting directly to a panel or DIN rail.

  • Wiring: It simplifies installation as it doesn’t necessarily require a separate, large external heat sink.

3. Typical Applications:
This component is a workhorse in industrial heating applications, including:

• Industrial Ovens and Furnaces

• Plastic Processing Machinery (Injection Molding, Extrusion)

• Packaging Machinery

• Food Processing Equipment

• Laboratory Test Chambers

4. Technical Specifications (Inferred from Model):

• Input Control Signal: Likely a standard analog input (e.g., 4-20 mA, 0-10 V DC) for compatibility with most process controllers.

• Output Load: 25 Amperes. This specifies the maximum current it can handle. The voltage rating (e.g., 240V AC, 480V AC) would be specified on the label and must match the electrical system and heater.

• Construction: Self-contained with an integrated heat sink for efficient thermal management.

• Status Indication: Most models include LED indicators for power and output status.