Panasonic Inverter CN701: Find Sensors to Control Terminals 1-3

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SUMMARY

The Panasonic inverter model CN701 requires specific sensors to control its terminals 1, 2, and 3, as indicated by the DPC-CN701 diagram showing voltage levels of 2-3V on terminals 1 and 3, and 0V on terminal 2. Terminal 1 is responsible for activating the unit after an initial warm-up period. Users are advised to explore compatible sensor options for these terminals, as well as the potential for alternative inputs to achieve the desired functionality. The complexity of the control panel's data connections remains uncertain, suggesting a need for further investigation into its operational mechanics.

PREREQUISITES
  • Understanding of Panasonic inverter models, specifically CN701
  • Familiarity with voltage specifications and terminal functions
  • Knowledge of sensor types compatible with inverter systems
  • Basic concepts of PWM (Pulse Width Modulation) and microcontroller communication
NEXT STEPS
  • Research compatible sensors for Panasonic inverter CN701 terminals
  • Investigate alternative input methods for terminal 1 activation
  • Learn about PWM signal applications in inverter control systems
  • Explore microcontroller interfacing with Panasonic inverter models
USEFUL FOR

Technicians, HVAC professionals, and engineers working with Panasonic inverters or similar control systems will benefit from this discussion, particularly those involved in sensor integration and terminal control.

Tony Simpson
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I have a Panasonic inverter, I understand it needs some sort of input to, CN701, three terminals numbered 1-2 & 3.

On the diagram DPC-CN701 shows 2-3v on 1 & 3 & 0v on 2.

Where can I get the sensors to control these points, I have been told that terminal 1 switches on the unit after initial warm up, can I use a different input?

Thanks hopefully

Diagram attached
 

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Tony Simpson said:
I have a Panasonic inverter, I understand it needs some sort of input to, CN701, three terminals numbered 1-2 & 3.

On the diagram DPC-CN701 shows 2-3v on 1 & 3 & 0v on 2.

Where can I get the sensors to control these points, I have been told that terminal 1 switches on the unit after initial warm up, can I use a different input?

Thanks hopefully

Diagram attached

Those are the "data" connections to the control panel. It's not clear how sophisticated it is - actual data back and forth with some type of microcontroller or just some type of PWM back and forth.
 

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