Omron G7SA-3A1B Slim Plug-in Safety 24V-DC Relay Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective use of the Omron G7SA-3A1B Slim Plug-in Safety 24V-DC Relay. This device is designed for integration into safety circuits, providing reliable switching capabilities. Please read this manual thoroughly before installation and operation to ensure proper functionality and to prevent potential hazards.

2. Safety Information

WARNING: Improper installation or operation can lead to serious injury or equipment damage. Always adhere to the following safety guidelines:

• Ensure all power is disconnected from the circuit before installing, inspecting, or performing maintenance on the relay.
• Installation and wiring must be performed by qualified personnel in accordance with all local and national electrical codes and regulations.
• Do not exceed the specified voltage and current ratings of the relay.
• Verify all connections are secure and correct before applying power.
• This relay is a component of a safety system. The overall safety of the system must be evaluated by a qualified safety engineer.

3. Product Features

The Omron G7SA-3A1B Safety Relay offers the following key features:

• Input Voltage: 24 V-DC
• Type: Safety Relay
• Connector Type: Plug-In for easy installation and replacement.
• Current Rating: 3 Amps
• Mounting Type: Plug In Mount
• Operation Mode: Automatic
• Model Identifier: D384849 (KFP)

4. Components Overview

The Omron G7SA-3A1B relay is a compact, transparent-cased device designed for clear visual inspection of its internal components. It features a coil, contact sets, and multiple pins for electrical connection.

Figure 4.1: Front view of the Omron G7SA-3A1B Safety Relay. This image displays the transparent casing, revealing the internal coil, contact mechanisms, and the pin configuration for plug-in mounting. Markings for voltage and current ratings are visible on the casing.

Figure 4.2: Angled view of the Omron G7SA-3A1B Safety Relay. This perspective highlights the slim profile of the relay and provides a clearer view of the connection pins at the bottom, essential for proper plug-in installation.

5. Setup and Installation

Follow these steps for proper installation of the G7SA-3A1B Safety Relay:

1. Power Disconnection: Ensure all power to the control panel or circuit where the relay will be installed is completely disconnected and locked out.
2. Socket Preparation: Identify the appropriate relay socket (sold separately) for the G7SA-3A1B. Ensure the socket is securely mounted and wired according to your circuit design and local electrical codes.
3. Relay Insertion: Align the pins of the G7SA-3A1B relay with the corresponding holes in the relay socket. Gently but firmly push the relay into the socket until it is fully seated. Do not force the relay, as this may bend or damage the pins.
4. Connection Verification: Visually inspect that all pins are correctly inserted into the socket and that the relay is seated flush.
5. Power Restoration: Once installation is complete and verified, restore power to the circuit.

6. Operating Instructions

The Omron G7SA-3A1B is an automatic safety relay designed to operate based on the energization of its coil. When the 24V-DC coil is energized, the internal contacts will switch, typically closing normally open contacts and opening normally closed contacts. When the coil is de-energized, the contacts return to their default state.

• Energization: Apply 24V-DC to the coil terminals of the relay. The relay will actuate, changing the state of its contacts.
• De-energization: Remove the 24V-DC supply from the coil terminals. The relay will de-actuate, returning its contacts to their original state.
• Safety Function: In a safety circuit, the relay's contact state is used to control power to machinery or safety devices, ensuring that a safe condition is maintained or achieved upon activation or deactivation of the safety function.

7. Maintenance

The G7SA-3A1B Safety Relay is designed for long-term reliability with minimal maintenance. However, periodic inspection is recommended:

• Visual Inspection: Regularly check the relay for any signs of physical damage, discoloration, or loose connections.
• Cleaning: If necessary, gently clean the exterior of the relay with a dry, soft cloth. Do not use solvents or abrasive cleaners.
• Functional Check: Periodically verify the relay's switching function within the safety circuit as part of your system's preventative maintenance schedule.
• Replacement: If the relay shows signs of wear, damage, or malfunction, replace it immediately with an identical Omron G7SA-3A1B model.

8. Troubleshooting

If the G7SA-3A1B relay is not functioning as expected, consider the following:

• No Operation:
  • Check if the 24V-DC power supply to the coil is present and stable.
  • Verify all wiring connections to the relay socket are secure and correct.
  • Ensure the relay is fully seated in its socket.
• Intermittent Operation:
  • Inspect for loose connections or damaged wiring.
  • Check for voltage fluctuations in the 24V-DC supply.
• Contact Issues (e.g., contacts not switching):
  • Confirm the coil is receiving the correct 24V-DC voltage.
  • If the relay has been subjected to overcurrent or excessive switching cycles, internal contacts may be worn or damaged. Consider replacement.

If troubleshooting steps do not resolve the issue, contact Omron technical support or a qualified technician.

9. Specifications

10. Warranty and Support

The Omron G7SA-3A1B Safety Relay is covered by Omron's standard product warranty. For specific warranty terms and conditions, please refer to the official Omron website or contact your local Omron representative.

For technical assistance, product inquiries, or support, please visit the official Omron website or contact Omron customer service directly. Contact information can typically be found on the Omron corporate website or product packaging.