Finder Series 27 Type 270182300000 Electromechanical Pulse Relay User Manual

1. Introduction

This manual provides essential information for the safe and efficient installation, operation, and maintenance of the Finder Series 27 Type 270182300000 Electromechanical Pulse Relay. Please read this manual thoroughly before using the product and retain it for future reference.

The Finder Series 27 pulse relay is a 10 A, unipolar switch with 1 normally open (NO) contact, designed for AC 50/60 Hz systems at 230 V. It features a standard design with socket clamps for connection and is suitable for panel mounting.

2. Safety Information

WARNING: Electrical shock hazard. Installation and maintenance should only be performed by qualified personnel in accordance with all local and national electrical codes.

• Always disconnect power before installing, servicing, or removing the relay.
• Ensure proper grounding to prevent electrical shock.
• Verify that the supply voltage and current ratings match the relay's specifications.
• Do not operate the relay in environments exceeding its specified temperature or humidity limits.
• Avoid exposing the relay to moisture or corrosive substances.

3. Product Overview

The Finder Series 27 Electromechanical Pulse Relay is designed for applications requiring sequential switching, such as lighting control. Key features include:

• Panel Mount: Designed for secure installation within electrical panels.
• AC Coils: Operates with alternating current.
• 1 NO Contact: Features one normally open contact for switching circuits.
• 3 Sequences Available: Supports various operational sequences.
• High Power Capacity: Rated for 10 Amps and 2400 Watts at 230 Volts.

Figure 3.1: Front view of the Finder Series 27 Electromechanical Pulse Relay, showing its transparent casing and terminal connections.

4. Setup and Installation

This pulse relay is designed for panel mounting. Follow these steps for proper installation:

1. Power Disconnection: Ensure all power to the installation area is disconnected at the main circuit breaker before beginning any work.
2. Mounting: Securely mount the relay within an electrical panel using appropriate fasteners. The relay dimensions are approximately 1.26 x 2.17 x 2.76 inches.
3. Wiring Connections:
   • Identify the three terminals on the relay.
   • Connect the control circuit wires to the coil terminals (A1, A2) as indicated on the relay. The coil voltage is 230 Volts AC.
   • Connect the load circuit wires to the contact terminals (1 NO) using the clamp-type connectors. The relay is rated for 10 Amps.
   • Ensure all connections are tight and secure to prevent loose contacts and overheating.
4. Verification: Double-check all wiring against the electrical diagram for your specific application.
5. Power Restoration: Once installation is complete and verified, restore power to the circuit.

Figure 4.1: Detailed view of the Finder Series 27 Relay's screw terminals, illustrating connection points for wiring.

5. Operating Instructions

The Finder Series 27 pulse relay operates automatically based on the control signals it receives. It is commonly used in applications where a momentary input signal triggers a change in the output state, which then remains until the next momentary input.

• When a pulse is applied to the coil terminals (A1, A2), the internal mechanism latches, changing the state of the 1 NO contact.
• The contact remains in this new state even after the control pulse is removed.
• A subsequent pulse will revert the contact to its original state.
• The relay supports three distinct operational sequences, which are determined by the specific model variant and internal configuration. Refer to your system's wiring diagram for the exact sequence implemented.

Figure 5.1: Example of the Finder Series 27 Relay integrated into a kitchen lighting system, demonstrating its application in controlling light fixtures.

Figure 5.2: The Finder Series 27 Relay shown in a living room setting, illustrating its use for managing multiple light sources.

6. Maintenance

The Finder Series 27 pulse relay is designed for long-term, reliable operation with minimal maintenance. However, periodic inspection is recommended:

• Visual Inspection: Periodically inspect 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.
• Connection Check: Ensure all wiring connections remain tight and secure.
• Environmental Conditions: Verify that the operating environment remains within the specified temperature and humidity ranges.

Note: The relay is a sealed unit and is not user-serviceable internally. Do not attempt to open the casing.

7. Troubleshooting

If the Finder Series 27 pulse relay is not functioning as expected, consider the following troubleshooting steps:

• No Response to Control Signal:
  • Check if power is supplied to the control circuit and the relay coil (A1, A2).
  • Verify that the control signal voltage matches the relay's coil voltage (230V AC).
  • Inspect control circuit wiring for breaks or loose connections.
• Load Not Switching:
  • Ensure the relay is receiving control pulses and its internal mechanism is audibly clicking or visibly changing state (if applicable).
  • Check the load circuit wiring for continuity and secure connections.
  • Verify that the load current does not exceed the relay's 10 Amp rating.
  • Confirm that the load itself is functional.
• Relay Overheating:
  • Ensure the load current does not exceed the relay's maximum rating.
  • Check for proper ventilation around the relay within the panel.
  • Verify that the ambient temperature is within the specified operating range.

If issues persist after performing these checks, contact a qualified electrician or Finder technical support.

8. Specifications

9. Warranty and Support

For information regarding warranty coverage, technical support, or service, please contact Finder directly through their official website or authorized distributors. Keep your purchase receipt as proof of purchase.

Manufacturer: FINDER

Part Number: 27.01.8.230.0000