1. Introduction (General Description)

️· Device: M2AS1 (This is the model number)
️· Function: This relay device provides high and low alarm functions, power-on delay, and latching output capabilities. It's designed for monitoring signals and triggering actions based on thresholds.
️· Website: [http://www.m-system.co.jp/](http://www.m-system.co.jp/) (For more information, manuals, and downloads)

2. Physical Dimensions & Mounting (Not Explicitly in Text, but likely included in a full datasheet)

️· Information about physical size, weight, and how the device is mounted are presumed to be in a separate datasheet.

3. Alarm Functions & Timing

️· High Alarm (Hi Alarm): The relay trips when the input signal *exceeds* a preset setpoint. A diagram shows "Bold Line" representing when the alarm is tripped.
️· Low Alarm (Lo Alarm): The relay trips when the input signal *falls below* a preset setpoint. A diagram shows "Bold Line" representing when the alarm is tripped.
️· Deadband: This is a range of signal values around the setpoint where the alarm won't trigger. It prevents rapid on/off switching due to minor fluctuations.
️· Power ON Delay Time (TDP): After power-up, the relay ignores alarm conditions for a defined time (TDP). This prevents nuisance tripping during power stabilization.
️· ON Delay Time (TD): After the input signal crosses the setpoint, there's a delay before the relay changes state. This is useful to filter out transient spikes.
️· Latching Output with Hi Alarm: The relay's output latches (stays in its tripped condition) until a reset command is received or power is removed.

4. Functions Summary (Table)

The table outlines several functions with associated diagrams:

️· High Alarm with Power ON Delay: Shows the relay state (coil energized) over time, relative to the input signal, setpoint, and TDP.
️· Low Alarm: Similar to the High Alarm, but triggered by a low input signal.
️· Latching Output with High Alarm: Illustrates how the output remains latched until reset.
️· ON Delay Time with Hi Alarm: Similar to other timing functions, demonstrating the relay status during the delay period.

5. Important Concepts Explained in Detail

️· Input: This refers to the signal being monitored (e.g., pressure, temperature, voltage).
️· Setpoint: The threshold value that triggers an alarm.
️· Reset: An action to return the relay to an untripped (normal) state.
️· Coil Energized/De-Energized: Relates to the relay’s internal mechanism and the electrical state that affects the output signal.



Overall Impression: