GEYA GSR1-1 Series Solid State Relay Instruction Manual

1. Introduction

The GEYA GSR1-1 series Solid State Relays (SSRs) are high-performance electronic switching devices designed for various industrial and automation control applications. These relays offer reliable and efficient control of electrical loads without mechanical moving parts, ensuring a long lifespan and high reliability. This manual provides essential information for the safe and effective installation, operation, and maintenance of your GEYA GSR1-1 series SSR.

The GSR1-1 series includes different control types:

• SSR-DA: DC control AC (Direct Current control Alternating Current)
• SSR-DD: DC control DC (Direct Current control Direct Current)
• SSR-AA: AC control AC (Alternating Current control Alternating Current)

2. Safety Information

Please read and understand all safety instructions before installing or operating the Solid State Relay. Failure to follow these instructions may result in electric shock, fire, or serious injury.

• Always disconnect power before performing any installation, wiring, or maintenance.
• Ensure that the control voltage and load voltage are within the specified ranges for your specific SSR model.
• Proper grounding is essential to prevent electric shock.
• Do not operate the SSR in environments exceeding its specified temperature or humidity limits.
• Ensure all connections are tight and secure to prevent overheating and potential damage.
• Installation should be performed by qualified personnel in accordance with local electrical codes and regulations.

3. Product Overview & Features

The GEYA GSR1-1 series SSRs are characterized by their robust design and advanced features:

• Wide input voltage range with small control current (typically ≤15mA for single-phase DC control AC, ≤10mA for single-phase AC control AC, ≤25mA for single-phase DC control DC).
• No mechanical operation parts, ensuring long lifespan and high reliability.
• Fast switching with zero-voltage turn-on and zero-current turn-off, minimizing radio frequency interference.
• Built-in resistance-capacitance (RC) absorption to protect against instantaneous current impacts at startup.
• Photoelectric isolation between input and output circuits, providing insulation withstand voltage of 2500V.
• Compact size, filled with epoxy resin for shock-proof, moisture-proof, and corrosion-proof properties.

Model Definition

The model number provides key information about the relay:

GSR1-1-XXDA

• GSR: GEYA Solid State Relay
• 1: Single-phase (2 for two-phase, 3 for three-phase)
• 1: Radiating (1 for without radiating, 2 for with radiating)
• XX: Rated output current (e.g., 10A, 25A, 40A, 60A, 80A, 100A, 120A)
• DA: Control type (DA: DC control AC; AA: AC control AC; DD: DC control DC)

4. Setup & Installation

Proper installation and wiring are crucial for the safe and reliable operation of the SSR. Refer to the specific wiring diagrams for your model type.

4.1. Single-phase DC Control AC (SSR-DA) Wiring

Connect the DC control voltage (3-32VDC) to the control terminals (3 and 4). Connect the AC load voltage (24-480VAC) to the output terminals (1 and 2). The SSR will switch the AC load based on the DC control signal.

4.2. Single-phase AC Control AC (SSR-AA) Wiring

Connect the AC control voltage (70-280VAC) to the control terminals (3 and 4). Connect the AC load voltage (24-480VAC) to the output terminals (1 and 2). The SSR will switch the AC load based on the AC control signal.

4.3. Single-phase DC Control DC (SSR-DD) Wiring

Connect the DC control voltage (3-32VDC) to the control terminals (3 and 4). Connect the DC load voltage (12-220VDC) to the output terminals (1 and 2). The SSR will switch the DC load based on the DC control signal.

4.4. Three-phase DC Control AC (SSR-DA) Wiring

For three-phase applications, the wiring can be configured in either a Star or Triangle connection. Connect the DC control voltage (70-280VDC) to the control terminals. Connect the three-phase AC load voltage (24-480VAC) to the output terminals.

4.5. Three-phase AC Control AC (SSR-AA) Wiring

For three-phase applications, the wiring can be configured in either a Star or Triangle connection. Connect the AC control voltage (70-280VAC) to the control terminals. Connect the three-phase AC load voltage (24-480VAC) to the output terminals.

4.6. Important Installation Notices

• Heat Dissipation: When selecting relays, pay special attention to the working current and ambient temperature of the load. For loads operating at higher currents, it is necessary to add a suitable radiator or implement other effective radiating measures.
• Thermal Management: The heat generated by the relay must be dissipated through its metal base. During installation, ensure tight cooperation between the relay and the radiator. The joint surface should be coated with thermal grease for optimal heat transfer.
• Secure Connections: Loose connections at the output terminals and load lines can cause the product to burn out due to heat generated during power-on. Recommended screw installations:
• M4 screws: Torque of 0.98-1.37 N.m
• M3 screws: Torque of 0.58-0.98 N.m
• Excessive torque will damage the relay.

5. Operating Instructions

Once the SSR is correctly installed and wired, operation is straightforward:

1. Ensure all power connections are secure and correct according to the wiring diagrams.
2. Apply the specified control voltage to the control terminals (3 and 4).
3. The SSR will switch the load on or off based on the presence or absence of the control signal.
4. Monitor the load to ensure proper operation.

For a visual demonstration of the SSR in action, please refer to the following video:

6. Maintenance

GEYA Solid State Relays are designed for minimal maintenance due to their lack of moving parts. However, periodic checks can help ensure continued reliable operation:

• Connection Integrity: Periodically inspect all wiring connections to ensure they remain tight and free from corrosion. Loose connections can lead to increased resistance, heat buildup, and potential failure.
• Thermal Management: Verify that the SSR and any attached radiator are free from dust or debris that could impede airflow and heat dissipation. Ensure thermal grease, if used, is still effective.
• Environmental Conditions: Confirm that the operating environment remains within the specified temperature and humidity ranges to prevent premature aging or failure of the SSR.

7. Troubleshooting

If you encounter issues with your GEYA GSR1-1 series SSR, consider the following common problems and solutions:

• SSR Not Switching On/Off:
  • Check the control voltage: Ensure it is within the specified range (e.g., 3-32VDC for DC control, 70-280VAC for AC control) and that the minimum switch-on voltage is met.
  • Verify control current: Ensure the control current meets the minimum requirement (e.g., 5mA for single-phase DC control AC).
  • Inspect control wiring: Check for loose or incorrect connections to the control terminals.
• SSR Overheating or Product Burnt:
  • Loose Connections: Immediately check all output terminal and load line connections. Loose connections are a primary cause of overheating and product damage. Ensure screws are tightened to the recommended torque (M4: 0.98-1.37 N.m; M3: 0.58-0.98 N.m).
  • Inadequate Heat Dissipation: Ensure a suitable radiator is installed, especially for higher load currents or ambient temperatures. Verify that thermal grease is applied correctly between the SSR and the radiator.
  • Overload: Confirm that the load current does not exceed the SSR's rated maximum load current.
• Unexpected Switching Behavior:
  • Zero-crossing Feature: Note that many SSRs, particularly the DA (DC control AC) type, are designed for zero-crossing switching. This means they turn on when the AC voltage crosses zero, which is normal for reducing electrical noise and extending load life. If you require immediate turn-on regardless of the AC cycle, ensure you have a random-fire type SSR (which may need to be specifically ordered).

8. Specifications

The following tables detail the general specifications for the GEYA GSR1-1 series Solid State Relays. Please refer to the specific model for exact values.

8.1. Single-phase DC Control AC (SSR-DA) Specifications

8.2. Single-phase AC Control AC (SSR-AA) Specifications

8.3. Single-phase DC Control DC (SSR-DD) Specifications

8.4. Three-phase DC Control AC (SSR-DA) Specifications

8.5. Three-phase AC Control AC (SSR-AA) Specifications

9. User Tips

• Zero-Crossing Feature: If you are using a DC control AC (DA type) SSR and notice that the load only switches on when the AC waveform crosses zero, this is normal behavior. This zero-crossing feature helps to reduce electrical noise and extend the life of the connected load. If your application requires immediate switching regardless of the AC cycle, you might need a random-fire type SSR.
• Radiator Necessity: For optimal performance and longevity, especially when operating at higher currents (e.g., 25A, 40A, or more) or in warmer environments, always use an appropriate radiator. The SSR's metal base must be in tight contact with the radiator, ideally with thermal grease applied.

10. Warranty & Support

GEYA products are manufactured to high-quality standards and are certified to required industry standards, including CE. For detailed warranty information and technical support, please refer to the official GEYA website or contact your local distributor.

A comprehensive user manual in PDF format is available for download, providing additional details and diagrams:

View User Manual (PDF)