ABB 1TGE120028R0010: A Technical Overview of the CR-M Timing Relay

In the world of industrial automation and electrical control, precision timing is essential for sequencing operations, preventing damage, and optimizing processes. While programmable logic controllers (PLCs) handle complex logic, there remains a critical need for simple, reliable, and dedicated timing devices. The ​ABB 1TGE120028R0010​ is a classic example of such a device: a robust and versatile timing relay from the ABB CR-M series. This article provides a comprehensive technical overview of this component, explaining its function, key features, and why it remains a popular choice for engineers.

What is the ABB 1TGE120028R0010?

The ​ABB 1TGE120028R0010​ is a specific model of an ​electromechanical timing relay. It is part of ABB's extensive range of control components designed for industrial applications. A timing relay is essentially a control relay that incorporates a time-delay function. It can be set to open or close its contacts after a predetermined time interval has elapsed from the moment it is energized or de-energized.

This particular model is known for its durability, ease of use, and flexibility, making it a staple in control panels for machinery, manufacturing lines, and building management systems.

Core Functionality: How the Timing Relay Works

The operation of the 1TGE120028R0010 is based on a simple principle:

1. ​Activation:​​ A control signal (e.g., a switch being pressed, a sensor being triggered) applies voltage to the relay's coil.
2. ​Time Delay Initiation:​​ Upon being energized, the internal timing mechanism begins its countdown. The delay time is set by the user using a rotary dial or dip switches on the front of the relay.
3. ​Contact Action:​​ After the set time delay expires, the relay changes the state of its output contacts. Depending on the configuration, it can be set for:
   • ​On-Delay (TDE):​​ The contacts change state after a delay once the coil is energized.
   • ​Off-Delay (TDD):​​ The contacts return to their original state after a delay once the coil is de-energized.
   • ​Other functions:​​ Like star-delta starter timing, flicker operation, etc.

Key Technical Specifications and Features

​1. Adjustable Time Ranges​

A key feature of this relay is its adjustable timing range. It typically covers a wide span, from fractions of a second up to several hours or even days, depending on the model variant. This versatility allows it to be used for quick interlocking delays (e.g., 0.2 seconds) or for long-duration processes (e.g., irrigation cycles).

​2. Multiple Timing Functions​

The ​ABB CR-M​ series, including the 1TGE120028R0010, is available in various configurations supporting different timing functions like On-delay, Off-delay, Interval, and Pulse. This makes it adaptable to a wide array of control tasks.

​3. DIN Rail Mounting​

Like most modern industrial control devices, it is designed for easy installation on a standard DIN rail, simplifying panel building and maintenance.

​4. Clear Visual Indication​

It often features LED indicators that show the status of the coil power and the state of the output contacts, providing at-a-glance diagnostics for technicians.

​5. Robust Construction​

Built to withstand the harsh conditions of industrial environments, including electrical noise, vibration, and temperature variations.

Common Applications in Control Logic

Timing relays are fundamental building blocks. They are used for:

• ​Motor Control:​​ Implementing delays in star-delta starters or sequencing multiple motors.
• ​Conveyor Systems:​​ Creating delays between belt starters to prevent overloading.
• ​Lighting Control:​​ For staircase lighting, where the light stays on for a set period after a button is pressed.
• ​Pump Control:​​ Introducing delays between pump start/stop commands to prevent water hammer.

Conclusion

The ​ABB 1TGE120028R0010​ timing relay exemplifies the enduring value of simple, purpose-built components in an increasingly digital world. Its reliability, ease of use, and flexibility make it an indispensable tool for electrical engineers and panel builders. For applications where a dedicated, robust, and easily understandable timing solution is required, this relay continues to be a trusted choice.