1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the Square D 9007-AW18 Limit Switch. Please read this manual thoroughly before attempting to install or operate the device. Retain this manual for future reference.
2. Product Overview
The Square D 9007-AW18 is a Series C, Class 9007, Type AW18 precision limit switch designed for industrial applications. It features a non-plug-in lever arm type and a deep box configuration with 2 Normally Open (N.O.) and 2 Normally Closed (N.C.) contacts. This 2-pole limit switch is rated for a maximum of 10 Amperes at 600 Volts AC.
Figure 1: Square D 9007-AW18 Limit Switch and its packaging. The switch is a gray rectangular unit with a lever arm, shown next to its brown cardboard box with a yellow label.
Figure 2: Close-up view of the product label on the Square D 9007-AW18 Limit Switch packaging. The label indicates 'CLASS 9007 TYPE AW-18 SERIES C' and 'PRECISION LIMIT SWITCH NEMA TYPES 2,4,5 & 12 DOUBLE POLE, DOUBLE THROW'.
3. Safety Information
WARNING: Risk of electric shock or explosion.
- Always disconnect power before installing, servicing, or removing this device.
- Installation and maintenance should only be performed by qualified personnel.
- Ensure all wiring complies with local and national electrical codes.
- Do not operate the switch if it is damaged or improperly installed.
4. Setup and Installation
- Mounting: Securely mount the limit switch to a stable surface using appropriate fasteners. Ensure the mounting location allows for proper actuation of the lever arm.
- Wiring:
- Disconnect all power to the circuit before wiring.
- Open the switch housing to access the terminal block.
- Connect the power and load wires to the appropriate terminals (Normally Open or Normally Closed) as required by your application. Refer to the wiring diagram provided with the product or on the device itself.
- Ensure all connections are tight and secure.
- Close the switch housing, ensuring the seal is intact to maintain its IP54 rating.
- Adjustment: Adjust the position of the lever arm and the switch mounting to ensure reliable actuation by the target object at the desired point in its travel.
- Testing: After installation, reapply power and test the switch operation to confirm it functions correctly and safely.
5. Operating Instructions
The Square D 9007-AW18 Limit Switch operates by detecting the physical presence or absence of an object. When the lever arm is actuated by an external force, the internal contacts change state (Normally Open contacts close, Normally Closed contacts open). This change in contact state can be used to initiate or interrupt an electrical circuit, signaling a position, counting events, or triggering other control functions.
- Ensure the switch is properly installed and wired according to Section 4.
- The switch will activate when the lever arm is physically moved by the target object.
- The switch will deactivate (return to its original state) when the target object moves away, releasing the lever arm.
6. Maintenance
Regular maintenance helps ensure the longevity and reliable operation of your limit switch.
- Inspection: Periodically inspect the switch for any signs of physical damage, corrosion, or loose connections. Check the integrity of the lever arm and its movement.
- Cleaning: Keep the switch free from excessive dust, dirt, and debris. Use a dry, soft cloth for cleaning. Avoid using harsh chemicals or abrasive materials.
- Actuation Check: Manually actuate the lever arm to ensure smooth operation and proper contact switching.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent premature failure.
7. Troubleshooting
If the limit switch is not functioning as expected, consider the following common issues:
- Switch Not Actuating:
- Check if the target object is making proper contact with the lever arm.
- Verify the lever arm's range of motion is not obstructed.
- Inspect for mechanical damage to the lever arm or internal mechanism.
- No Electrical Response:
- Ensure power is supplied to the circuit.
- Check all wiring connections for looseness or corrosion.
- Verify the correct terminals (N.O./N.C.) are being used for the desired circuit behavior.
- Test the continuity of the switch contacts with a multimeter (with power disconnected).
- Intermittent Operation:
- Check for loose wiring connections.
- Ensure the switch is securely mounted and not vibrating excessively.
- Inspect for debris interfering with the switch mechanism.
If issues persist after troubleshooting, contact a qualified electrician or the manufacturer for assistance.
8. Specifications
| Specification | Value |
|---|---|
| Model Number | 9007-AW18 |
| Brand | Square D |
| Series | C |
| Class | 9007 |
| Type | AW18 (Lever Arm Type Non-Plug-In) |
| Contact Configuration | 2 N.O. - 2 N.C. (Double Pole, Double Throw) |
| Current Rating | 10 Amps |
| Operating Voltage (AC Max) | 600 Volts |
| Operating Voltage (DC) | 115V DC (1.0A), 230V DC (0.3A), 600V DC (0.1A) |
| Terminal Type | Screw (DPST) |
| Circuit Type | 2-way |
| International Protection Rating | IP54 |
| Item Weight | 2 Pounds |
| Manufacturer | Square D |
9. Warranty and Support
Warranty information for the Square D 9007-AW18 Limit Switch is typically provided by the manufacturer, Square D, or the authorized seller at the time of purchase. Please refer to your purchase documentation for specific warranty terms and conditions.
For technical support or further assistance, please contact Square D customer service or your authorized distributor.
