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- 16 Independent Relay Outputs: Each channel provides Form A (normally open) relay contacts rated at 5A @ 250VAC or 5A @ 30VDC.
- High Electrical Isolation: 3-way isolation protection (RS-485, field-to-logic, and channel-to-channel) rated at 3000 Vrms.
- Dual Watchdog System: Hardware and communication watchdogs ensure continuous operation and fail-safe output control.
- Standard Modbus Protocol: Fully compatible with Modbus RTU and ASCII communication standards for seamless integration with SCADA, PLC, and DCS systems.
- Flexible Configuration: DIP switches for baud rate, protocol selection, and slave address (1–63).
- High Noise Immunity: Meets IEC61000-4-4 EFT Level 3 and IEC61000-4-2 ESD Level 3 standards.
- User-Friendly LED Indicators: LEDs for power, communication (RX/TX), I/O status, and terminal resistor status.
- Fail-Safe Operation: Configurable output states during communication loss or power failure.
- DIN-Rail Mounting: Compact industrial enclosure with slide-out labeling panel for easy installation and maintenance.
- Wide Operating Temperature Range: -30°C to +75°C for harsh industrial environments.
- Network Scalability: Supports up to 63 modules on a single RS-485 bus without repeaters (up to 4000 ft).
- Software Support: Compatible with SUNIX ioCFG configuration utility and major SCADA software (LabView, Wonderware, Citect, Intellution).
- High Electrical Isolation: 3-way isolation protection (RS-485, field-to-logic, and channel-to-channel) rated at 3000 Vrms.
- Dual Watchdog System: Hardware and communication watchdogs ensure continuous operation and fail-safe output control.
- Standard Modbus Protocol: Fully compatible with Modbus RTU and ASCII communication standards for seamless integration with SCADA, PLC, and DCS systems.
- Flexible Configuration: DIP switches for baud rate, protocol selection, and slave address (1–63).
- High Noise Immunity: Meets IEC61000-4-4 EFT Level 3 and IEC61000-4-2 ESD Level 3 standards.
- User-Friendly LED Indicators: LEDs for power, communication (RX/TX), I/O status, and terminal resistor status.
- Fail-Safe Operation: Configurable output states during communication loss or power failure.
- DIN-Rail Mounting: Compact industrial enclosure with slide-out labeling panel for easy installation and maintenance.
- Wide Operating Temperature Range: -30°C to +75°C for harsh industrial environments.
- Network Scalability: Supports up to 63 modules on a single RS-485 bus without repeaters (up to 4000 ft).
- Software Support: Compatible with SUNIX ioCFG configuration utility and major SCADA software (LabView, Wonderware, Citect, Intellution).
Comprehensive Product Summary – SUNIX ioSCADA SM_DO_116 16-Channel Power Relay Output Module
### 1. Product Overview
Product Name: 16-Channel Power Relay Output Module
Model: SM_DO_116
Series: SUNIX ioSCADA SM Series
Article Number: SM_DO_116
Manufacturer: Sunix Group (SUNIX Technology Inc.)
Product Category: Industrial Modbus I/O Module – Digital Output (Relay Type)
Mounting Type: DIN-Rail Mountable
Dimensions: 132 × 125 × 47.5 mm
Product Family: ioSCADA – Industrial Modbus RS-485 I/O Modules
The SM_DO_116 is a high-performance, industrial-grade 16-channel relay output module designed for distributed control and data acquisition systems. It is part of the SUNIX ioSCADA SM series, which supports the Modbus RTU and ASCII protocols over an RS-485 three-wire interface. The module provides robust relay outputs with high isolation, noise immunity, and flexible configuration options, making it ideal for SCADA, DCS, and PLC-based automation systems.
### 2. Key Features
- 16 Independent Relay Outputs: Each channel provides Form A (normally open) relay contacts rated at 5A @ 250VAC or 5A @ 30VDC.
- High Electrical Isolation: 3-way isolation protection (RS-485, field-to-logic, and channel-to-channel) rated at 3000 Vrms.
- Dual Watchdog System: Hardware and communication watchdogs ensure continuous operation and fail-safe output control.
- Standard Modbus Protocol: Fully compatible with Modbus RTU and ASCII communication standards for seamless integration with SCADA, PLC, and DCS systems.
- Flexible Configuration: DIP switches for baud rate, protocol selection, and slave address (1–63).
- High Noise Immunity: Meets IEC61000-4-4 EFT Level 3 and IEC61000-4-2 ESD Level 3 standards.
- User-Friendly LED Indicators: LEDs for power, communication (RX/TX), I/O status, and terminal resistor status.
- Fail-Safe Operation: Configurable output states during communication loss or power failure.
- DIN-Rail Mounting: Compact industrial enclosure with slide-out labeling panel for easy installation and maintenance.
- Wide Operating Temperature Range: -30°C to +75°C for harsh industrial environments.
- Network Scalability: Supports up to 63 modules on a single RS-485 bus without repeaters (up to 4000 ft).
- Software Support: Compatible with SUNIX ioCFG configuration utility and major SCADA software (LabView, Wonderware, Citect, Intellution).
### 3. Technical Specifications
Electrical Characteristics
- Output Channels: 16 relay outputs
- Relay Type: Form A (Normally Open)
- Contact Rating: 5A @ 250VAC / 5A @ 30VDC
- Max Output Current per Channel: 2A
- Max Total Output Current (Module): 8A
- Minimum OFF Resistance: 1000 MΩ @ 500VDC
- Minimum ON Resistance: 30 mΩ @ 6VDC, 1A
- Output Response Time: ≤10 ms (from command receipt to relay activation)
- Mechanical Life: 2 × 10⁷ operations
- Electrical Life: 1 × 10⁵ operations @ 1A load
- Line Voltage: Max 30VDC / Max 250VAC
- Power Supply: 10–30 VDC (typical 24VDC)
- Power Consumption: 0.1789A @ 24VDC (typical)
Physical Characteristics
- Dimensions: 132 mm (W) × 125 mm (H) × 47.5 mm (D)
- Mounting: DIN-Rail or panel mount
- Weight: Approx. 400 g
- Material: Industrial-grade ABS enclosure with removable terminal blocks
- Wiring: I/O cable 16–24 AWG
Environmental Conditions
- Operating Temperature: -30°C to +75°C
- Storage Temperature: -45°C to +85°C
- Relative Humidity: 5–90% non-condensing
- Isolation Voltage: 3000 Vrms (RS-485, field-to-logic, and channel-to-channel)
- Overvoltage Protection: 70 VDC/Vp-p
EMC Compliance
- EFT Immunity: IEC61000-4-4 Level 3 (power/signal lines)
- ESD Immunity: IEC61000-4-2 Level 3 (8kV air / 4kV contact)
- Surge Immunity: IEC61000-4-5 (0.5kV)
- CE Certified
### 4. Functionality
The SM_DO_116 operates as a Modbus slave device on an RS-485 network. It receives control commands from a Modbus master (SCADA, PLC, or DCS) and actuates its relay outputs accordingly. Each output can be configured for direct control, delayed activation, pulse output, or time-proportion control (TPC).
Supported Modbus Function Codes:
- 01 – Read Coil Status
- 02 – Read Input Status
- 03 – Read Holding Registers
- 04 – Read Input Registers
- 05 – Force Single Coil
- 06 – Preset Single Register
- 08 – Loopback Command
- 15 – Force Multiple Coils
- 16 – Preset Multiple Registers
- 17 – Report Slave ID
Communication Interface:
- Interface Type: RS-485 (3-wire: Data+, Data-, COM)
- Protocol: Modbus RTU / ASCII
- Baud Rate: 1200–115200 bps (default 115.2k)
- Data Format: 8 data bits, no parity, 1 stop bit
- Address Range: 1–63 (default 1)
- Network Distance: Up to 4000 ft (1200 m) without repeater
Use Cases:
- Industrial process control and automation
- Distributed relay control in SCADA systems
- Remote equipment switching and alarm signaling
- Power plant and substation control
- Building automation and environmental monitoring
- Integration with PLCs, PACs, and DCS systems
### 5. Components & Accessories
Included Items:
- SM_DO_116 module (1 unit)
- DIN-rail mounting accessory kit
- Installation CD with ioCFG configuration software
- Quick installation guide
Optional Accessories:
- RS-232/RS-485 isolation converter
- RS-485 repeater (for extended networks)
- Panel mounting brackets
- Replacement terminal blocks
Connectors:
- Power Input: 2-pin terminal block (10–30VDC)
- RS-485 Communication: 3-pin terminal block (Data+, Data-, COM)
- Relay Outputs: 16-channel removable terminal block
### 6. Installation & Setup
Mounting Options:
- DIN-Rail (horizontal or vertical orientation)
- Panel mount (front or back)
Configuration Steps:
1. Set Baud Rate and Protocol: Use DIP switch SW-1 (pins 1–3 for baud rate, pin 4 for RTU/ASCII).
2. Assign Slave Address: Use DIP switch SW-2 (pins 1–6 for address, pin 7 for factory reset).
3. Connect Power Supply: 10–30VDC regulated industrial power source.
4. Connect RS-485 Network: Shielded twisted-pair cable; terminate with built-in resistor if module is at network end.
5. Verify LED Indicators: Power (PWR), Communication (RX/TX), I/O Access (IO_ACC), and Terminal Resistor (Rt_ON).
6. Software Configuration: Use ioCFG utility to monitor, configure, and test I/O channels.
Factory Reset Procedure:
- Power off → Set DIP7 (INIT) ON → Power on → Set DIP7 OFF within 5 seconds → Module resets to default.
### 7. Performance & Capabilities
Relay Output Performance:
- Response Time: ≤10 ms
- Sequential ON/OFF Control: Configurable delay (0–65535 s, 1s resolution)
- Pulse Output Mode: 0–65535 s, 1s resolution
- Time Proportion Control (TPC): 0–100% duty cycle, 0.1–300 s cycle time
- Fail-Safe Mode: Configurable output state during communication loss (0–65535 s timeout)
- Power-On Output: User-defined startup state for each channel
Reliability:
- Hardware Watchdog: Monitors CPU operation and resets on fault.
- Communication Watchdog: Detects Modbus link loss and enforces safe output state.
- MTBF: High mean time between failures due to industrial-grade design.
Limitations:
- Maximum total current limited to 8A across all channels.
- Relay contact life depends on load type (resistive vs. inductive).
- Not suitable for human safety or life-support applications.
### 8. Standards & Compliance
Communication Standards:
- Modbus RTU / ASCII over RS-485 (EIA/TIA-485 compliant)
Electrical & EMC Standards:
- IEC61000-4-2 (ESD) Level 3
- IEC61000-4-4 (EFT) Level 3
- IEC61000-4-5 (Surge) 0.5kV
- CE Marked for industrial use
Isolation & Protection:
- RS-485 Isolation: 3000 Vrms
- Field-to-Logic Isolation: 3000 Vrms
- Channel-to-Channel Isolation: Yes
- Overvoltage Protection: 70 VDC/Vp-p
Environmental Compliance:
- RoHS Compliant
- Designed for industrial temperature range (-30°C to +75°C)
### 9. Additional Information
Warranty:
- Duration: 2 years from delivery or 1 year after installation (whichever comes first).
- Coverage: Manufacturing defects under normal operation.
- Exclusions: Damage due to misuse, improper installation, or environmental conditions beyond specifications.
Service Policy:
- Free repair or replacement during warranty period (shipping costs borne by customer).
- Post-warranty repairs available at ~25% of product price.
- RMA (Return Material Authorization) required for all returns.
Maintenance:
- Periodic inspection of terminal connections and relay contacts recommended.
- Keep module clean and free from conductive dust.
- Ensure proper grounding (PE) for noise immunity.
Software & Updates:
- Configuration Utility: ioCFG (Windows-based, included on CD).
- Firmware Updates: Available via SUNIX support portal.
- SCADA Compatibility: Works with LabView, Wonderware, Citect, Intellution, and other Modbus-compatible systems.
Safety Notes:
- Not intended for human life-support or rescue systems.
- Ensure compliance with local electrical codes during installation.
### Summary
The SUNIX SM_DO_116 is a robust, industrial-grade 16-channel relay output module engineered for distributed control and monitoring applications. With Modbus RTU/ASCII communication, dual watchdog protection, and high isolation, it ensures reliable operation in demanding environments such as power plants, steel mills, and petrochemical facilities. Its flexible configuration, fail-safe design, and wide temperature tolerance make it a versatile component for modern SCADA and automation infrastructures.
Key Advantages:
- 16 isolated relay outputs with 5A contact rating
- Full Modbus RTU/ASCII support over RS-485
- 3-way 3kV isolation and industrial EMC compliance
- Configurable timing, pulse, and proportional control functions
- Compact DIN-rail design with user-friendly diagnostics
Ideal Applications:
- SCADA and DCS remote I/O expansion
- Industrial process control and automation
- Power distribution and equipment switching
- Building management and environmental systems
Manufacturer: SUNIX Group
Model: SM_DO_116
Series: ioSCADA SM Series
Type: 16-Channel Power Relay Output Module
Communication: Modbus RTU/ASCII via RS-485
Operating Voltage: 10–30 VDC
Isolation: 3000 Vrms
Operating Temperature: -30°C to +75°C
Mounting: DIN-Rail
Warranty: 2 Years
*(Approx. 3000 tokens / ~12,000 characters)*
### 1. Product Overview
Product Name: 16-Channel Power Relay Output Module
Model: SM_DO_116
Series: SUNIX ioSCADA SM Series
Article Number: SM_DO_116
Manufacturer: Sunix Group (SUNIX Technology Inc.)
Product Category: Industrial Modbus I/O Module – Digital Output (Relay Type)
Mounting Type: DIN-Rail Mountable
Dimensions: 132 × 125 × 47.5 mm
Product Family: ioSCADA – Industrial Modbus RS-485 I/O Modules
The SM_DO_116 is a high-performance, industrial-grade 16-channel relay output module designed for distributed control and data acquisition systems. It is part of the SUNIX ioSCADA SM series, which supports the Modbus RTU and ASCII protocols over an RS-485 three-wire interface. The module provides robust relay outputs with high isolation, noise immunity, and flexible configuration options, making it ideal for SCADA, DCS, and PLC-based automation systems.
### 2. Key Features
- 16 Independent Relay Outputs: Each channel provides Form A (normally open) relay contacts rated at 5A @ 250VAC or 5A @ 30VDC.
- High Electrical Isolation: 3-way isolation protection (RS-485, field-to-logic, and channel-to-channel) rated at 3000 Vrms.
- Dual Watchdog System: Hardware and communication watchdogs ensure continuous operation and fail-safe output control.
- Standard Modbus Protocol: Fully compatible with Modbus RTU and ASCII communication standards for seamless integration with SCADA, PLC, and DCS systems.
- Flexible Configuration: DIP switches for baud rate, protocol selection, and slave address (1–63).
- High Noise Immunity: Meets IEC61000-4-4 EFT Level 3 and IEC61000-4-2 ESD Level 3 standards.
- User-Friendly LED Indicators: LEDs for power, communication (RX/TX), I/O status, and terminal resistor status.
- Fail-Safe Operation: Configurable output states during communication loss or power failure.
- DIN-Rail Mounting: Compact industrial enclosure with slide-out labeling panel for easy installation and maintenance.
- Wide Operating Temperature Range: -30°C to +75°C for harsh industrial environments.
- Network Scalability: Supports up to 63 modules on a single RS-485 bus without repeaters (up to 4000 ft).
- Software Support: Compatible with SUNIX ioCFG configuration utility and major SCADA software (LabView, Wonderware, Citect, Intellution).
### 3. Technical Specifications
Electrical Characteristics
- Output Channels: 16 relay outputs
- Relay Type: Form A (Normally Open)
- Contact Rating: 5A @ 250VAC / 5A @ 30VDC
- Max Output Current per Channel: 2A
- Max Total Output Current (Module): 8A
- Minimum OFF Resistance: 1000 MΩ @ 500VDC
- Minimum ON Resistance: 30 mΩ @ 6VDC, 1A
- Output Response Time: ≤10 ms (from command receipt to relay activation)
- Mechanical Life: 2 × 10⁷ operations
- Electrical Life: 1 × 10⁵ operations @ 1A load
- Line Voltage: Max 30VDC / Max 250VAC
- Power Supply: 10–30 VDC (typical 24VDC)
- Power Consumption: 0.1789A @ 24VDC (typical)
Physical Characteristics
- Dimensions: 132 mm (W) × 125 mm (H) × 47.5 mm (D)
- Mounting: DIN-Rail or panel mount
- Weight: Approx. 400 g
- Material: Industrial-grade ABS enclosure with removable terminal blocks
- Wiring: I/O cable 16–24 AWG
Environmental Conditions
- Operating Temperature: -30°C to +75°C
- Storage Temperature: -45°C to +85°C
- Relative Humidity: 5–90% non-condensing
- Isolation Voltage: 3000 Vrms (RS-485, field-to-logic, and channel-to-channel)
- Overvoltage Protection: 70 VDC/Vp-p
EMC Compliance
- EFT Immunity: IEC61000-4-4 Level 3 (power/signal lines)
- ESD Immunity: IEC61000-4-2 Level 3 (8kV air / 4kV contact)
- Surge Immunity: IEC61000-4-5 (0.5kV)
- CE Certified
### 4. Functionality
The SM_DO_116 operates as a Modbus slave device on an RS-485 network. It receives control commands from a Modbus master (SCADA, PLC, or DCS) and actuates its relay outputs accordingly. Each output can be configured for direct control, delayed activation, pulse output, or time-proportion control (TPC).
Supported Modbus Function Codes:
- 01 – Read Coil Status
- 02 – Read Input Status
- 03 – Read Holding Registers
- 04 – Read Input Registers
- 05 – Force Single Coil
- 06 – Preset Single Register
- 08 – Loopback Command
- 15 – Force Multiple Coils
- 16 – Preset Multiple Registers
- 17 – Report Slave ID
Communication Interface:
- Interface Type: RS-485 (3-wire: Data+, Data-, COM)
- Protocol: Modbus RTU / ASCII
- Baud Rate: 1200–115200 bps (default 115.2k)
- Data Format: 8 data bits, no parity, 1 stop bit
- Address Range: 1–63 (default 1)
- Network Distance: Up to 4000 ft (1200 m) without repeater
Use Cases:
- Industrial process control and automation
- Distributed relay control in SCADA systems
- Remote equipment switching and alarm signaling
- Power plant and substation control
- Building automation and environmental monitoring
- Integration with PLCs, PACs, and DCS systems
### 5. Components & Accessories
Included Items:
- SM_DO_116 module (1 unit)
- DIN-rail mounting accessory kit
- Installation CD with ioCFG configuration software
- Quick installation guide
Optional Accessories:
- RS-232/RS-485 isolation converter
- RS-485 repeater (for extended networks)
- Panel mounting brackets
- Replacement terminal blocks
Connectors:
- Power Input: 2-pin terminal block (10–30VDC)
- RS-485 Communication: 3-pin terminal block (Data+, Data-, COM)
- Relay Outputs: 16-channel removable terminal block
### 6. Installation & Setup
Mounting Options:
- DIN-Rail (horizontal or vertical orientation)
- Panel mount (front or back)
Configuration Steps:
1. Set Baud Rate and Protocol: Use DIP switch SW-1 (pins 1–3 for baud rate, pin 4 for RTU/ASCII).
2. Assign Slave Address: Use DIP switch SW-2 (pins 1–6 for address, pin 7 for factory reset).
3. Connect Power Supply: 10–30VDC regulated industrial power source.
4. Connect RS-485 Network: Shielded twisted-pair cable; terminate with built-in resistor if module is at network end.
5. Verify LED Indicators: Power (PWR), Communication (RX/TX), I/O Access (IO_ACC), and Terminal Resistor (Rt_ON).
6. Software Configuration: Use ioCFG utility to monitor, configure, and test I/O channels.
Factory Reset Procedure:
- Power off → Set DIP7 (INIT) ON → Power on → Set DIP7 OFF within 5 seconds → Module resets to default.
### 7. Performance & Capabilities
Relay Output Performance:
- Response Time: ≤10 ms
- Sequential ON/OFF Control: Configurable delay (0–65535 s, 1s resolution)
- Pulse Output Mode: 0–65535 s, 1s resolution
- Time Proportion Control (TPC): 0–100% duty cycle, 0.1–300 s cycle time
- Fail-Safe Mode: Configurable output state during communication loss (0–65535 s timeout)
- Power-On Output: User-defined startup state for each channel
Reliability:
- Hardware Watchdog: Monitors CPU operation and resets on fault.
- Communication Watchdog: Detects Modbus link loss and enforces safe output state.
- MTBF: High mean time between failures due to industrial-grade design.
Limitations:
- Maximum total current limited to 8A across all channels.
- Relay contact life depends on load type (resistive vs. inductive).
- Not suitable for human safety or life-support applications.
### 8. Standards & Compliance
Communication Standards:
- Modbus RTU / ASCII over RS-485 (EIA/TIA-485 compliant)
Electrical & EMC Standards:
- IEC61000-4-2 (ESD) Level 3
- IEC61000-4-4 (EFT) Level 3
- IEC61000-4-5 (Surge) 0.5kV
- CE Marked for industrial use
Isolation & Protection:
- RS-485 Isolation: 3000 Vrms
- Field-to-Logic Isolation: 3000 Vrms
- Channel-to-Channel Isolation: Yes
- Overvoltage Protection: 70 VDC/Vp-p
Environmental Compliance:
- RoHS Compliant
- Designed for industrial temperature range (-30°C to +75°C)
### 9. Additional Information
Warranty:
- Duration: 2 years from delivery or 1 year after installation (whichever comes first).
- Coverage: Manufacturing defects under normal operation.
- Exclusions: Damage due to misuse, improper installation, or environmental conditions beyond specifications.
Service Policy:
- Free repair or replacement during warranty period (shipping costs borne by customer).
- Post-warranty repairs available at ~25% of product price.
- RMA (Return Material Authorization) required for all returns.
Maintenance:
- Periodic inspection of terminal connections and relay contacts recommended.
- Keep module clean and free from conductive dust.
- Ensure proper grounding (PE) for noise immunity.
Software & Updates:
- Configuration Utility: ioCFG (Windows-based, included on CD).
- Firmware Updates: Available via SUNIX support portal.
- SCADA Compatibility: Works with LabView, Wonderware, Citect, Intellution, and other Modbus-compatible systems.
Safety Notes:
- Not intended for human life-support or rescue systems.
- Ensure compliance with local electrical codes during installation.
### Summary
The SUNIX SM_DO_116 is a robust, industrial-grade 16-channel relay output module engineered for distributed control and monitoring applications. With Modbus RTU/ASCII communication, dual watchdog protection, and high isolation, it ensures reliable operation in demanding environments such as power plants, steel mills, and petrochemical facilities. Its flexible configuration, fail-safe design, and wide temperature tolerance make it a versatile component for modern SCADA and automation infrastructures.
Key Advantages:
- 16 isolated relay outputs with 5A contact rating
- Full Modbus RTU/ASCII support over RS-485
- 3-way 3kV isolation and industrial EMC compliance
- Configurable timing, pulse, and proportional control functions
- Compact DIN-rail design with user-friendly diagnostics
Ideal Applications:
- SCADA and DCS remote I/O expansion
- Industrial process control and automation
- Power distribution and equipment switching
- Building management and environmental systems
Manufacturer: SUNIX Group
Model: SM_DO_116
Series: ioSCADA SM Series
Type: 16-Channel Power Relay Output Module
Communication: Modbus RTU/ASCII via RS-485
Operating Voltage: 10–30 VDC
Isolation: 3000 Vrms
Operating Temperature: -30°C to +75°C
Mounting: DIN-Rail
Warranty: 2 Years
*(Approx. 3000 tokens / ~12,000 characters)*
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ModBus-IO-Modules.pdf
PDF Catalog
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ioSCADA-Series_manual_En.pdf
Manual
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