FCGK Slim SSR Relay Module Instruction Manual

1. Introduction

The FCGK Slim SSR (Solid State Relay) Module is designed for efficient current amplification and isolation protection of output loads in various control systems. It is particularly suitable for applications involving PLCs, microprocessor systems, and time relays, where it amplifies control currents to protect critical control systems from damage. This module features a compact design, making it ideal for space-constrained installations.

2. Features

• High Current Rating: 6A rated operation current.
• Contact Configuration: 1 NO (Normally Open) contact.
• Ultra-Slim Design: Compact size with only 6.2mm (0.236in) thickness, saving up to 70% space compared to standard relays.
• Visual Indication: Equipped with an LED indicator that illuminates when the relay is energized.
• Easy Installation: Designed for convenient DIN-rail mounting.
• Isolation Protection: Provides isolation for sensitive control circuits.
• Zero-Cross Switching: Features zero-cross switching for AC loads, reducing electrical noise and extending load life.

3. Specifications

4. Components Overview

The FCGK Slim SSR Relay Module consists of the following key components:

• Slim Relay: The main solid-state switching component.
• Base Model: The housing that integrates the relay and provides connection terminals.
• Work Indicator Light: An LED that indicates the operational status of the relay (energized/active).
• Lock/Unlock Buckle: A mechanism for securely attaching the relay to its base and for easy removal.
• Screw Type Terminals: For secure electrical connections.
• DIN-rail Installation Slot: Integrated design for mounting on standard DIN rails.

5. Installation

The FCGK Slim SSR Relay Module is designed for quick and easy installation on a standard DIN rail.

1. Mounting: Align the module's DIN-rail slot with the DIN rail and press firmly until it clicks into place.
2. Relay Insertion/Removal: If the relay is separate from the base, insert it into the base until it's secure. To remove the relay from its base, simply pull the lock/unlock buckle upwards to release it, then gently pull the relay out.

6. Wiring Diagram

Refer to the diagram below for proper wiring of the SSR-DA41F (DC control AC) module. Ensure all connections are secure and comply with local electrical codes.

• Control Input (DC): Connect your DC control signal to terminals A3+ (positive) and A4- (negative). The input voltage range is 3-32VDC.
• Load Output (AC): Connect your AC load to terminals A1~ and A2~. The output voltage range is 24-250VAC, with a maximum current of 6A.
• Zero-Cross (ZC): The integrated Zero-Cross detection ensures that the AC load is switched on or off when the AC voltage crosses zero, minimizing electrical interference and extending the life of the load and relay.

7. Operation

Once properly installed and wired, the FCGK Slim SSR Relay Module operates based on the control signal applied to its input terminals.

1. Apply a DC control voltage (3-32VDC) across terminals A3+ and A4-.
2. When the control voltage is applied, the internal solid-state switch will close, allowing current to flow through the connected AC load (A1~ and A2~).
3. The work indicator light (LED) on the module will illuminate when the control voltage is present and the relay is energized.
4. When the control voltage is removed, the solid-state switch will open, disconnecting power to the AC load.

8. Maintenance

The FCGK Slim SSR Relay Module is designed for long-term, maintenance-free operation. However, periodic checks can help ensure optimal performance:

• Visual Inspection: Periodically check for any signs of physical damage, loose connections, or discoloration due to overheating.
• Cleaning: Ensure the module and its terminals are free from dust and debris. Use a soft, dry cloth for cleaning.
• Connection Integrity: Verify that all screw terminals are tightened appropriately to prevent intermittent connections or arcing.
• Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent premature failure.

9. Troubleshooting

If you encounter issues with your FCGK Slim SSR Relay Module, consider the following troubleshooting steps:

• Relay Not Activating (LED Off):
  • Check if the DC control voltage (3-32VDC) is correctly applied to A3+ and A4-.
  • Verify the polarity of the control voltage (A3+ for positive, A4- for negative).
  • Ensure the control signal source is functioning correctly.
• Load Not Receiving Power (LED On):
  • Check the AC load connections to A1~ and A2~.
  • Verify that the AC power source for the load is active and within the 24-250VAC range.
  • Ensure the load itself is not faulty or drawing excessive current (exceeding 6A).
  • Inspect for any loose wiring at the load terminals.
• Intermittent Operation:
  • Check all screw terminals for tightness. Loose connections can cause intermittent contact.
  • Ensure the module is securely seated on the DIN rail and in its base.
• Overheating:
  • Verify that the load current does not exceed the 6A rating.
  • Ensure adequate ventilation around the module, especially if multiple relays are installed closely together.

10. User Tips

• Space Optimization: Take advantage of the ultra-slim design by arranging multiple modules closely on the DIN rail to maximize panel space.
• Zero-Cross Switching: The integrated zero-cross switching feature is beneficial for resistive and inductive AC loads, as it minimizes inrush currents and extends the lifespan of both the relay and the connected equipment.
• Jumper Links: For multi-relay setups, consider using compatible junction links (busbars) to simplify power distribution to the control inputs or load outputs, reducing wiring complexity and improving neatness.

11. Warranty and Support

FCGK products are manufactured to high-quality standards. For specific warranty information, technical support, or service inquiries, please contact your vendor or refer to the official FCGK website. Keep your purchase receipt for warranty claims.