1. Product Overview

️· Product Name: M2AS1
️· Manufacturer: M-System (website: http://www.m-system.co.jp/)
️· Type: Relay (likely a process relay or industrial relay)
️· Purpose: The M2AS1 is designed to monitor a signal and trigger a relay action (tripped or untripped) based on user-defined thresholds and timing parameters. It’s used in industrial automation and process control applications.
️· Document Version: ES-5064 Rev.12

2. Technical Specifications (Inferred – Not Explicitly Listed)

️· Input: Accepts signal inputs. It's capable of receiving a signal and using it to determine the relay’s state. It accepts an Input shunt resistor for current input
️· Output: A relay contact that can switch a circuit (the specifications don't detail voltage or amperage ratings, which would normally be found on a datasheet).
️· Programming/Configuration: The relay allows for user-defined settings:
- Setpoint (threshold for alarm triggering)
- Deadband (hysteresis; prevents rapid switching around the setpoint)
- Delay Times (TDP and TD)
️· Construction: The text implies it's an industrial-grade device, built for potentially harsh environments.
️· *Missing Specs:* Crucially, this text *doesn't* provide:
- Supply Voltage
- Contact Ratings (Voltage & Current)
- Input Signal Type (Voltage, Current, etc.)
- Temperature Range
- Dimensions

3. Functional Descriptions

The M2AS1 supports a range of functions with configurable parameters:

️· High Alarm: The relay is tripped when the input signal exceeds a pre-set threshold.
️· Low Alarm: The relay is tripped when the input signal falls below a pre-set threshold.
️· Power-On Delay (TDP): A delay period after power-up, during which the relay ignores alarm conditions.
️· On Delay (TD): A delay period after a threshold is crossed, before the relay trips.
️· Latching Output: The relay remains in a tripped state until reset by:
- Reset button press
- Reset input signal
- Power removal
️· TD (On Delay) with High Alarm: A combination of the on delay function and the high alarm condition.
️· TDP (Power On Delay) with High Alarm: A combination of the power on delay and high alarm conditions.

4. Key Features (Summarized)

️· Configurable Alarms: Both high and low alarm conditions are supported.
️· Flexible Timing: Power-on delay and on-delay functions to prevent unwanted tripping.
️· Latching Functionality: Provides a memory effect (tripped state persists until reset).
️· User-Defined Setpoints & Deadband: Customizable thresholds and hysteresis.
️· Industrial Design: Robust and suitable for demanding applications.
️· Input Shunt Resistor Support: The ability to use an input shunt resistor allows for flexible current input to the device.

What's Still Unclear

️· Specific Input Signal Requirements: What type of signal can it accept (DC voltage, DC current, dry contact, etc.)?
️· Contact Type and Ratings: What type of relay contacts are used (SPDT, DPDT, etc.) and what are their voltage and current ratings?
️· Power Supply Requirements: What voltage is required to power the relay itself?
️· Communication/Programming: Does it have any communication capabilities (e.g., Modbus) or programming interface? (Not mentioned in the text)



To obtain a comprehensive understanding of the M2AS1, you would need to consult the full product datasheet from the manufacturer's website. This summary aims to extract as much information as possible from the provided text.