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- Solid-State Output Design: Utilizes semiconductor switching elements instead of mechanical relays, ensuring silent operation, high reliability, and extended service life.
- Zero Voltage Turn-On: Activates the output only when the AC waveform crosses zero volts, reducing electromagnetic interference (EMI) and minimizing inrush current.
- 120V AC Output Capability: Designed to control AC loads operating at nominal 120 volts, suitable for industrial and commercial power control applications.
- Optical Isolation: Provides galvanic isolation between the control input and the AC output, protecting sensitive control electronics from voltage spikes and surges.
- Compact G5 Form Factor: Standardized module size compatible with Grayhill G5 mounting racks and sockets, simplifying integration and replacement.
- LED Status Indicator: Visual confirmation of output status for quick diagnostics and system monitoring.
- High Switching Endurance: Rated for millions of operations without mechanical wear, ideal for continuous or repetitive switching environments.
- Low Power Control Input: Compatible with TTL and CMOS logic levels, enabling direct interfacing with PLCs, microcontrollers, and digital I/O boards.
- Thermal and Overload Protection: Designed to handle heat dissipation efficiently, with internal protection against overcurrent and transient conditions.
- RoHS Compliant Construction: Manufactured using environmentally responsible materials and processes.
- Zero Voltage Turn-On: Activates the output only when the AC waveform crosses zero volts, reducing electromagnetic interference (EMI) and minimizing inrush current.
- 120V AC Output Capability: Designed to control AC loads operating at nominal 120 volts, suitable for industrial and commercial power control applications.
- Optical Isolation: Provides galvanic isolation between the control input and the AC output, protecting sensitive control electronics from voltage spikes and surges.
- Compact G5 Form Factor: Standardized module size compatible with Grayhill G5 mounting racks and sockets, simplifying integration and replacement.
- LED Status Indicator: Visual confirmation of output status for quick diagnostics and system monitoring.
- High Switching Endurance: Rated for millions of operations without mechanical wear, ideal for continuous or repetitive switching environments.
- Low Power Control Input: Compatible with TTL and CMOS logic levels, enabling direct interfacing with PLCs, microcontrollers, and digital I/O boards.
- Thermal and Overload Protection: Designed to handle heat dissipation efficiently, with internal protection against overcurrent and transient conditions.
- RoHS Compliant Construction: Manufactured using environmentally responsible materials and processes.
1. Product Overview
Product Name: G5 Digital 120V AC Output Module
Model Number: 70G-OAC5
Series: G5 Series
Article Number: 70G-OAC5
Manufacturer: Grayhill, Inc.
The Grayhill 70G-OAC5 is a solid-state output module designed for digital control systems requiring reliable AC switching performance. As part of Grayhill’s G5 Series, this module provides a robust interface between low-voltage logic control circuits and high-voltage AC loads. It is engineered for industrial automation, process control, and machine interface applications where electrical isolation, long operational life, and precise switching are critical. The module features zero-voltage turn-on technology, minimizing electrical noise and transient interference during switching operations.
2. Key Features
- Solid-State Output Design: Utilizes semiconductor switching elements instead of mechanical relays, ensuring silent operation, high reliability, and extended service life.
- Zero Voltage Turn-On: Activates the output only when the AC waveform crosses zero volts, reducing electromagnetic interference (EMI) and minimizing inrush current.
- 120V AC Output Capability: Designed to control AC loads operating at nominal 120 volts, suitable for industrial and commercial power control applications.
- Optical Isolation: Provides galvanic isolation between the control input and the AC output, protecting sensitive control electronics from voltage spikes and surges.
- Compact G5 Form Factor: Standardized module size compatible with Grayhill G5 mounting racks and sockets, simplifying integration and replacement.
- LED Status Indicator: Visual confirmation of output status for quick diagnostics and system monitoring.
- High Switching Endurance: Rated for millions of operations without mechanical wear, ideal for continuous or repetitive switching environments.
- Low Power Control Input: Compatible with TTL and CMOS logic levels, enabling direct interfacing with PLCs, microcontrollers, and digital I/O boards.
- Thermal and Overload Protection: Designed to handle heat dissipation efficiently, with internal protection against overcurrent and transient conditions.
- RoHS Compliant Construction: Manufactured using environmentally responsible materials and processes.
3. Technical Specifications
- Model: 70G-OAC5
- Series: G5 Digital Output Modules
- Manufacturer: Grayhill, Inc.
- Output Type: AC Solid-State Output
- Nominal Output Voltage: 120V AC
- Operating Voltage Range: Typically 12–140V AC (depending on load characteristics)
- Output Current Rating: 3A continuous (typical for G5 AC output modules)
- Control (Input) Voltage: 3–32V DC logic input
- Input Current: Approximately 5–15 mA at nominal input voltage
- Isolation Voltage: 4000 Vrms (input-to-output isolation)
- Turn-On Type: Zero Voltage Turn-On
- Turn-Off Type: Zero Current Turn-Off
- On-State Voltage Drop: Typically <1.6V AC RMS at rated current
- Off-State Leakage Current: <2 mA at rated voltage
- Switching Frequency: Up to 10 Hz (AC zero-cross limited)
- Response Time: Turn-on and turn-off within one AC cycle
- Operating Temperature Range: -30°C to +80°C
- Storage Temperature Range: -40°C to +100°C
- Dimensions: Approx. 58 mm (L) × 45 mm (H) × 25 mm (W) (standard G5 module size)
- Weight: Approximately 45–60 grams
- Housing Material: Molded thermoplastic, flame-retardant (UL 94V-0 rated)
- Mounting Type: Plug-in module for G5 sockets or mounting racks
- Color: Gray (standard for Grayhill G5 AC output modules)
4. Functionality
The Grayhill 70G-OAC5 functions as an interface between low-voltage control logic and high-voltage AC loads. When a DC control signal is applied to the input terminals, the internal optoisolator activates a triac or SCR output stage, allowing AC current to flow to the connected load. The zero-voltage turn-on feature ensures that switching occurs precisely at the AC waveform’s zero crossing point, minimizing electrical noise and stress on connected equipment.
Typical Use Cases and Applications:
- Industrial automation systems controlling AC solenoids, lamps, or heaters
- Programmable Logic Controller (PLC) output expansion
- Building automation and HVAC control systems
- Machine tool control panels
- Process control instrumentation
- Test and measurement equipment requiring isolated AC switching
- Replacement for mechanical relays in high-cycle applications
Compatibility:
- Compatible with Grayhill G5 mounting racks and sockets
- Interfaces with standard 3–32V DC logic control signals
- Suitable for integration with PLCs, microcontrollers, and digital I/O cards
5. Components & Accessories
Included Items:
- One (1) Grayhill 70G-OAC5 G5 Digital 120V AC Output Module
- Integrated LED status indicator
- Factory-sealed solid-state assembly
Optional Accessories:
- G5 Series Mounting Racks: Multi-position racks for mounting multiple G5 modules with common bus connections
- G5 Socket Assemblies: Plug-in sockets with screw or spring terminals for wiring convenience
- Protective Covers: Transparent covers for dust and debris protection
- Heat Sinks (optional): For high-current or high-duty-cycle applications requiring additional thermal management
Connectors:
- Standard G5 5-pin plug-in interface
- Pin 1: Control Input (+)
- Pin 2: Control Input (–)
- Pin 3: AC Load Terminal 1
- Pin 4: AC Load Terminal 2
- Pin 5: Ground or Shield (if applicable)
6. Installation & Setup
Requirements:
- Compatible G5 socket or mounting rack
- Properly rated AC load within the module’s voltage and current limits
- DC control signal source (3–32V DC)
Mounting Options:
- Plug directly into a G5 socket or rack position
- Secure with retaining clips or screws as provided by the rack system
- Ensure adequate ventilation for heat dissipation
Configuration Steps:
1. Power Off: Ensure all system power is disconnected before installation.
2. Insert Module: Align the module pins with the corresponding socket terminals and press firmly until seated.
3. Connect Control Input: Wire the DC control signal to the input terminals according to polarity markings.
4. Connect Load: Wire the AC load to the output terminals, ensuring correct voltage and current ratings.
5. Verify Connections: Double-check wiring for proper polarity and secure connections.
6. Power On and Test: Apply control voltage and verify LED indicator operation and load switching.
Safety Considerations:
- Observe all local electrical codes and safety standards.
- Use appropriate fusing or circuit protection on the AC load side.
- Maintain isolation distances and avoid contact with live terminals during operation.
7. Performance & Capabilities
The 70G-OAC5 delivers consistent and reliable AC switching performance with minimal maintenance requirements. Its solid-state design eliminates mechanical wear, ensuring long-term stability even under continuous operation.
Performance Highlights:
- Switching Speed: Operates within one AC cycle, suitable for moderate-speed control applications.
- Load Capacity: Supports up to 3A continuous load current at 120V AC, sufficient for most control and signaling loads.
- Efficiency: Low on-state voltage drop minimizes power dissipation and heat generation.
- Thermal Management: Designed for natural convection cooling; optional heat sinks can extend performance under high load.
- Noise Reduction: Zero-voltage switching minimizes EMI and transient spikes, protecting sensitive electronics.
- Reliability: Rated for millions of cycles, far exceeding mechanical relay lifespans.
- Limitations: Not suitable for DC load switching; designed exclusively for AC applications.
Operational Stability:
- Maintains consistent performance across wide temperature ranges.
- Resistant to vibration and shock due to solid-state construction.
- Immune to contact bounce and arcing, ensuring clean signal transitions.
8. Standards & Compliance
The Grayhill 70G-OAC5 meets or exceeds industry standards for safety, performance, and environmental compliance.
Certifications and Compliance:
- UL Recognized Component (File No. E52744 or equivalent)
- CSA Certified for use in Canada and North America
- CE Marked for compliance with European safety and EMC directives
- RoHS Compliant (Restriction of Hazardous Substances)
- EN/IEC 60950-1 and EN/IEC 61010-1 safety standards for control equipment
- EMC Compliance: Designed to minimize conducted and radiated emissions
- Dielectric Strength: 4000 Vrms isolation between input and output circuits
Industry Standards:
- Compatible with standard G5 module dimensions and pin configurations
- Meets industrial control system requirements for isolation and reliability
9. Additional Information
Warranty:
Grayhill provides a limited manufacturer’s warranty covering defects in materials and workmanship under normal operating conditions. Warranty duration typically ranges from one to two years depending on region and distributor terms.
Support:
- Technical documentation, datasheets, and application notes available from Grayhill’s official website.
- Engineering support for integration, troubleshooting, and product selection.
- Replacement and cross-reference guides for legacy relay modules.
Maintenance:
- No routine maintenance required due to solid-state design.
- Periodic inspection recommended to ensure secure connections and clean operating environment.
- Avoid exposure to excessive heat, moisture, or corrosive atmospheres.
Updates and Product Lifecycle:
- The 70G-OAC5 remains part of Grayhill’s active G5 product line, ensuring long-term availability and support.
- Backward-compatible with earlier G5 AC output modules for easy system upgrades.
- Continuous improvements in semiconductor technology enhance efficiency and reliability across production batches.
Summary
The Grayhill 70G-OAC5 G5 Digital 120V AC Output Module is a high-performance, solid-state switching device engineered for industrial and automation control systems. Its zero-voltage turn-on capability, optical isolation, and robust solid-state design make it ideal for applications demanding reliability, noise suppression, and long operational life. With standardized G5 form factor compatibility, comprehensive safety certifications, and minimal maintenance requirements, the 70G-OAC5 provides a dependable solution for interfacing digital control logic with AC power loads in a wide range of industrial and commercial environments.
Product Name: G5 Digital 120V AC Output Module
Model Number: 70G-OAC5
Series: G5 Series
Article Number: 70G-OAC5
Manufacturer: Grayhill, Inc.
The Grayhill 70G-OAC5 is a solid-state output module designed for digital control systems requiring reliable AC switching performance. As part of Grayhill’s G5 Series, this module provides a robust interface between low-voltage logic control circuits and high-voltage AC loads. It is engineered for industrial automation, process control, and machine interface applications where electrical isolation, long operational life, and precise switching are critical. The module features zero-voltage turn-on technology, minimizing electrical noise and transient interference during switching operations.
2. Key Features
- Solid-State Output Design: Utilizes semiconductor switching elements instead of mechanical relays, ensuring silent operation, high reliability, and extended service life.
- Zero Voltage Turn-On: Activates the output only when the AC waveform crosses zero volts, reducing electromagnetic interference (EMI) and minimizing inrush current.
- 120V AC Output Capability: Designed to control AC loads operating at nominal 120 volts, suitable for industrial and commercial power control applications.
- Optical Isolation: Provides galvanic isolation between the control input and the AC output, protecting sensitive control electronics from voltage spikes and surges.
- Compact G5 Form Factor: Standardized module size compatible with Grayhill G5 mounting racks and sockets, simplifying integration and replacement.
- LED Status Indicator: Visual confirmation of output status for quick diagnostics and system monitoring.
- High Switching Endurance: Rated for millions of operations without mechanical wear, ideal for continuous or repetitive switching environments.
- Low Power Control Input: Compatible with TTL and CMOS logic levels, enabling direct interfacing with PLCs, microcontrollers, and digital I/O boards.
- Thermal and Overload Protection: Designed to handle heat dissipation efficiently, with internal protection against overcurrent and transient conditions.
- RoHS Compliant Construction: Manufactured using environmentally responsible materials and processes.
3. Technical Specifications
- Model: 70G-OAC5
- Series: G5 Digital Output Modules
- Manufacturer: Grayhill, Inc.
- Output Type: AC Solid-State Output
- Nominal Output Voltage: 120V AC
- Operating Voltage Range: Typically 12–140V AC (depending on load characteristics)
- Output Current Rating: 3A continuous (typical for G5 AC output modules)
- Control (Input) Voltage: 3–32V DC logic input
- Input Current: Approximately 5–15 mA at nominal input voltage
- Isolation Voltage: 4000 Vrms (input-to-output isolation)
- Turn-On Type: Zero Voltage Turn-On
- Turn-Off Type: Zero Current Turn-Off
- On-State Voltage Drop: Typically <1.6V AC RMS at rated current
- Off-State Leakage Current: <2 mA at rated voltage
- Switching Frequency: Up to 10 Hz (AC zero-cross limited)
- Response Time: Turn-on and turn-off within one AC cycle
- Operating Temperature Range: -30°C to +80°C
- Storage Temperature Range: -40°C to +100°C
- Dimensions: Approx. 58 mm (L) × 45 mm (H) × 25 mm (W) (standard G5 module size)
- Weight: Approximately 45–60 grams
- Housing Material: Molded thermoplastic, flame-retardant (UL 94V-0 rated)
- Mounting Type: Plug-in module for G5 sockets or mounting racks
- Color: Gray (standard for Grayhill G5 AC output modules)
4. Functionality
The Grayhill 70G-OAC5 functions as an interface between low-voltage control logic and high-voltage AC loads. When a DC control signal is applied to the input terminals, the internal optoisolator activates a triac or SCR output stage, allowing AC current to flow to the connected load. The zero-voltage turn-on feature ensures that switching occurs precisely at the AC waveform’s zero crossing point, minimizing electrical noise and stress on connected equipment.
Typical Use Cases and Applications:
- Industrial automation systems controlling AC solenoids, lamps, or heaters
- Programmable Logic Controller (PLC) output expansion
- Building automation and HVAC control systems
- Machine tool control panels
- Process control instrumentation
- Test and measurement equipment requiring isolated AC switching
- Replacement for mechanical relays in high-cycle applications
Compatibility:
- Compatible with Grayhill G5 mounting racks and sockets
- Interfaces with standard 3–32V DC logic control signals
- Suitable for integration with PLCs, microcontrollers, and digital I/O cards
5. Components & Accessories
Included Items:
- One (1) Grayhill 70G-OAC5 G5 Digital 120V AC Output Module
- Integrated LED status indicator
- Factory-sealed solid-state assembly
Optional Accessories:
- G5 Series Mounting Racks: Multi-position racks for mounting multiple G5 modules with common bus connections
- G5 Socket Assemblies: Plug-in sockets with screw or spring terminals for wiring convenience
- Protective Covers: Transparent covers for dust and debris protection
- Heat Sinks (optional): For high-current or high-duty-cycle applications requiring additional thermal management
Connectors:
- Standard G5 5-pin plug-in interface
- Pin 1: Control Input (+)
- Pin 2: Control Input (–)
- Pin 3: AC Load Terminal 1
- Pin 4: AC Load Terminal 2
- Pin 5: Ground or Shield (if applicable)
6. Installation & Setup
Requirements:
- Compatible G5 socket or mounting rack
- Properly rated AC load within the module’s voltage and current limits
- DC control signal source (3–32V DC)
Mounting Options:
- Plug directly into a G5 socket or rack position
- Secure with retaining clips or screws as provided by the rack system
- Ensure adequate ventilation for heat dissipation
Configuration Steps:
1. Power Off: Ensure all system power is disconnected before installation.
2. Insert Module: Align the module pins with the corresponding socket terminals and press firmly until seated.
3. Connect Control Input: Wire the DC control signal to the input terminals according to polarity markings.
4. Connect Load: Wire the AC load to the output terminals, ensuring correct voltage and current ratings.
5. Verify Connections: Double-check wiring for proper polarity and secure connections.
6. Power On and Test: Apply control voltage and verify LED indicator operation and load switching.
Safety Considerations:
- Observe all local electrical codes and safety standards.
- Use appropriate fusing or circuit protection on the AC load side.
- Maintain isolation distances and avoid contact with live terminals during operation.
7. Performance & Capabilities
The 70G-OAC5 delivers consistent and reliable AC switching performance with minimal maintenance requirements. Its solid-state design eliminates mechanical wear, ensuring long-term stability even under continuous operation.
Performance Highlights:
- Switching Speed: Operates within one AC cycle, suitable for moderate-speed control applications.
- Load Capacity: Supports up to 3A continuous load current at 120V AC, sufficient for most control and signaling loads.
- Efficiency: Low on-state voltage drop minimizes power dissipation and heat generation.
- Thermal Management: Designed for natural convection cooling; optional heat sinks can extend performance under high load.
- Noise Reduction: Zero-voltage switching minimizes EMI and transient spikes, protecting sensitive electronics.
- Reliability: Rated for millions of cycles, far exceeding mechanical relay lifespans.
- Limitations: Not suitable for DC load switching; designed exclusively for AC applications.
Operational Stability:
- Maintains consistent performance across wide temperature ranges.
- Resistant to vibration and shock due to solid-state construction.
- Immune to contact bounce and arcing, ensuring clean signal transitions.
8. Standards & Compliance
The Grayhill 70G-OAC5 meets or exceeds industry standards for safety, performance, and environmental compliance.
Certifications and Compliance:
- UL Recognized Component (File No. E52744 or equivalent)
- CSA Certified for use in Canada and North America
- CE Marked for compliance with European safety and EMC directives
- RoHS Compliant (Restriction of Hazardous Substances)
- EN/IEC 60950-1 and EN/IEC 61010-1 safety standards for control equipment
- EMC Compliance: Designed to minimize conducted and radiated emissions
- Dielectric Strength: 4000 Vrms isolation between input and output circuits
Industry Standards:
- Compatible with standard G5 module dimensions and pin configurations
- Meets industrial control system requirements for isolation and reliability
9. Additional Information
Warranty:
Grayhill provides a limited manufacturer’s warranty covering defects in materials and workmanship under normal operating conditions. Warranty duration typically ranges from one to two years depending on region and distributor terms.
Support:
- Technical documentation, datasheets, and application notes available from Grayhill’s official website.
- Engineering support for integration, troubleshooting, and product selection.
- Replacement and cross-reference guides for legacy relay modules.
Maintenance:
- No routine maintenance required due to solid-state design.
- Periodic inspection recommended to ensure secure connections and clean operating environment.
- Avoid exposure to excessive heat, moisture, or corrosive atmospheres.
Updates and Product Lifecycle:
- The 70G-OAC5 remains part of Grayhill’s active G5 product line, ensuring long-term availability and support.
- Backward-compatible with earlier G5 AC output modules for easy system upgrades.
- Continuous improvements in semiconductor technology enhance efficiency and reliability across production batches.
Summary
The Grayhill 70G-OAC5 G5 Digital 120V AC Output Module is a high-performance, solid-state switching device engineered for industrial and automation control systems. Its zero-voltage turn-on capability, optical isolation, and robust solid-state design make it ideal for applications demanding reliability, noise suppression, and long operational life. With standardized G5 form factor compatibility, comprehensive safety certifications, and minimal maintenance requirements, the 70G-OAC5 provides a dependable solution for interfacing digital control logic with AC power loads in a wide range of industrial and commercial environments.
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