Warning Before wiring, ensure that power to transmitter is switched off.

When connecting cable wires, use a small screwdriver to gently press down and hold the spring connector open. Insert the appropriate wire into the open connector hole, releasing the screwdriver to secure the wire. See Figure 6.

Figure 6: Connecting wires

Warning Avoid touching electronic components, as they are susceptible to electrostatic discharge (ESD). Refer to Appendix A, “Electrostatic Sensitive Device (ESD)”.

2.1.3 Analog output, isolated supply, non-isolated supply and jumper configuration

The analog output may be powered from the main instrument power supply or a separate, independent power supply in which case an isolated wiring configuration is necessary.

To set a Non-isolated or Isolated current output, simply move the Jumpers/shorting jacks (JP3 and JP4) to either the Non-isolated or Isolated current position. For Non-isolated current output, ensure pins 3 & 2 at JP3 & JP4 location on the main terminal board are jumpered (shorted). Factory standard models ship with jumpers at JP3 & JP4 in the Non-isolated current output position (default position).

For Isolated current output, pins 1 & 2 at JP3 & JP4 should be jumpered (shorted). Note that JP3 is for configuring channel 1 and JP4 is for configuring channel 2. Jumpers and pins are located next to the Power and 4- 20 output terminals on the main terminal board. See Figure 7, also Figure 12 & Figure 13 for reference.

Figure 7: Non- Isolated and Isolated current jumpers

Warning Always ensure that JP3 and JP4 jumpers are in the correct position depending on the current output configuration chosen.

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MAN-0076 Rev 05 Millennium II December 07, 2012

Net Safety Monitoring Inc

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Emerson M21, M22 user manual Connecting wires
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M22, M21 specifications

The Emerson M21 and M22 are advanced industrial controllers designed to enhance process automation and operational efficiency in various industries. Emerson, a leader in automation technology, introduced these models to meet the growing demands for precision, reliability, and connectivity in today’s fast-paced industrial environments.

One of the standout features of the M21 and M22 controllers is their robust processing power. They are equipped with high-speed processors that enable rapid data processing and real-time decision-making. This capability allows users to respond promptly to changing process conditions, ensuring optimal performance and minimizing downtime.

The M21 and M22 offer versatile connectivity options, supporting various communication protocols such as Ethernet, Modbus, and TCP/IP. This extensive connectivity facilitates seamless integration into existing systems, allowing for easy collaboration between devices across different platforms. Users can monitor and control processes from virtually anywhere, providing flexibility and convenience.

Scalability is another essential characteristic of the M21 and M22. These controllers can easily adapt to growing operational demands, enabling businesses to expand their automation solutions without the need for complete overhauls. Whether you're running a small system or a large, complex operation, these controllers can scale to meet your needs.

Furthermore, Emerson has incorporated advanced diagnostic and predictive maintenance features into the M21 and M22 models. These technologies leverage data analytics to predict potential failures before they occur, allowing users to take proactive measures. This not only minimizes unexpected downtime but also extends the lifespan of equipment, contributing to overall cost savings.

In terms of user interface, the M21 and M22 come with intuitive software that provides easy navigation and configuration. The interface is designed to be user-friendly, reducing the learning curve for new operators and allowing for efficient setup and management of processes.

Finally, both controllers are built with a focus on reliability and durability, making them suitable for various industrial environments, including harsh or demanding settings. Their robust design ensures consistent performance, even in challenging conditions.

In summary, the Emerson M21 and M22 controllers represent cutting-edge solutions in industrial automation, offering high processing power, flexible connectivity, scalability, advanced maintenance features, user-friendly interfaces, and robust design. Companies looking to enhance their automation capabilities will find these controllers to be valuable assets in achieving operational excellence.
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