1. General Information - Introduction & Website Reference:

️· The document is a specification sheet for products from "M-System" (referred to as "MODEL: SML" throughout).
️· It refers to a website: `http://www.m-system.co.jp/` for more information.

2. Module Types & Models:

The document details several different modules designed to work within a "NestBus" system. Here's a list, including their model numbers and primary function:

️· SML-C7: Contact Output Module (8 points - Photo MOSFET Relay)
️· SML-C8: Contact Output Module (8 points - Relay)
️· SML-E5: Contact I/O Module (4 Digital Inputs + 4 Digital Outputs - Relay)
️· SML-A (Not fully described): A contact input module (4 points).
️· SML-C (Not fully described): A contact output module (8 points).

3. Power Input Options:

Each module's power input can be one of three options, identified by a code after the model number:

️· K: 85 – 132 V AC
️· L: 170 – 264 V AC
️· R: 24 V DC

4. General Specifications (Common to Many Modules):

️· Connection: M3.5 screw terminals
️· Isolation: NestBus to I/O to RUN contact output to power to FG (This refers to electrical isolation between different sections of the system).
️· LED Indicators: Red LEDs indicate the status of each channel (input or output).

5. Module-Specific Specifications:

The document provides detailed specifications for each module, including:

️· Input Specifications:
- Dry contact input (for input modules)
- Sensing voltage (typically 24 V DC)
- ON/OFF current and resistance values
️· Output Specifications:
- Photo MOSFET Relay (SML-C7) – low voltage, high speed switching
- Relay contact (SML-C8, SML-E5) – higher voltage and current capabilities
- Contact ratings (voltage/current)
- Maximum switching voltage/power
- Minimum load requirements
️· Mechanical Life (For modules with relays)

6. Terminal Connection Diagrams:

For each module, there is a basic terminal connection diagram showing the inputs (Di 1-4, COM1) and outputs (Do 1-4, COM2) and their respective labels. The diagram shows the physical connections for the modules.

Key Takeaways:

️· Modular System: These modules are designed to be part of a larger, modular system ("NestBus").
️· Variety of Functions: The range of modules allows for a variety of input/output configurations.
️· Industrial Application: The specifications (voltage ratings, isolation, mechanical life) suggest that these modules are designed for industrial applications.
️· Complete Documentation Elsewhere: This document is a partial specification sheet. More details can be found at the website reference.