1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the HZVEKCRI LANN22N Auxiliary Contact. Please read this manual thoroughly before using the product and retain it for future reference.
The HZVEKCRI LANN22N is an auxiliary contact block designed for use with motor contactors, providing additional normally open (NO) and normally closed (NC) contacts for control circuits.
2. Safety Information
WARNING: Electrical Hazard
- Installation and maintenance must be performed by qualified personnel only.
- Ensure all power is disconnected before installation, wiring, or maintenance to prevent electric shock.
- Verify correct wiring connections according to applicable electrical codes and diagrams.
- Do not operate the device if it appears damaged.
3. Product Overview
The HZVEKCRI LANN22N auxiliary contact block features multiple contact configurations for versatile control applications. It is designed for easy attachment to compatible motor contactors.
Figure 1: HZVEKCRI LANN22N Auxiliary Contact
This image displays the HZVEKCRI LANN22N auxiliary contact. Visible labels include "LANN22N" on the side and front. The top terminals are labeled 53 NO, 61 NC, 71 NC, 83 NO. The bottom terminals are labeled 54 NO, 62 NC, 72 NC, 84 NO. An orange indicator is present in the center. The side label also indicates specifications such as "10A" and "Ui: 690V", and standards "EC 60947-5", "GBT 14048.5".
Key features include:
- Multiple Normally Open (NO) and Normally Closed (NC) contacts.
- Designed for front mounting on compatible contactors.
- Clear terminal markings for easy wiring.
4. Setup and Installation
- Power Disconnection: Ensure that the main power supply to the contactor circuit is completely disconnected and locked out before beginning installation.
- Identify Mounting Location: The LANN22N auxiliary contact is typically designed for front mounting onto a compatible motor contactor. Locate the designated mounting slots or clips on the contactor.
- Attach Auxiliary Contact: Align the auxiliary contact block with the mounting mechanism on the contactor. Gently push or clip the auxiliary contact into place until it is securely fastened. Ensure there is no wobble or loose connection.
- Wiring: Refer to your control circuit diagram for specific wiring requirements. Connect the control wires to the appropriate terminals (NO or NC) on the auxiliary contact. The terminals are clearly marked:
- NO (Normally Open) Contacts: 53-54, 83-84
- NC (Normally Closed) Contacts: 61-62, 71-72
- Verify Installation: Double-check all connections and ensure the auxiliary contact is firmly attached to the main contactor.
- Restore Power: Once installation is complete and verified, restore power to the circuit.
5. Operating Instructions
The HZVEKCRI LANN22N auxiliary contact operates in conjunction with the main motor contactor. When the main contactor coil is energized, its main contacts change state, and simultaneously, the auxiliary contacts on the LANN22N also change state.
- Normally Open (NO) Contacts: These contacts are open when the main contactor is de-energized and close when the main contactor is energized.
- Normally Closed (NC) Contacts: These contacts are closed when the main contactor is de-energized and open when the main contactor is energized.
The auxiliary contacts are used for signaling, interlocking, or controlling other components in the control circuit based on the state of the main contactor.
6. Maintenance
The HZVEKCRI LANN22N auxiliary contact is designed for reliable operation with minimal maintenance. However, periodic checks are recommended to ensure optimal performance and safety.
- Visual Inspection: Periodically inspect the auxiliary contact for any signs of physical damage, discoloration, or loose connections.
- Terminal Tightness: Ensure all wiring terminals remain tight. Loose connections can lead to overheating or intermittent operation.
- Cleanliness: Keep the device free from dust, dirt, and moisture. Use a dry, lint-free cloth for cleaning. Do not use solvents or abrasive cleaners.
- Functionality Check: If possible and safe to do so, periodically verify the correct operation of the NO and NC contacts in conjunction with the main contactor.
Always disconnect power before performing any maintenance.
7. Troubleshooting
If you encounter issues with the HZVEKCRI LANN22N auxiliary contact, consider the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Auxiliary contact not changing state. |
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| Intermittent operation. |
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If problems persist after following these steps, contact qualified technical support.
8. Specifications
| Parameter | Value |
|---|---|
| Model | LANN22N (Replaces LAEN22, LAEN22N) |
| Brand | HZVEKCRI |
| Contact Configuration | 2 Normally Open (NO), 2 Normally Closed (NC) |
| Rated Current (Ith) | 10 A |
| Rated Insulation Voltage (Ui) | 690 V |
| Standards | EC 60947-5, GBT 14048.5 |
| Package Dimensions | 1.18 x 0.79 x 0.39 inches |
| Item Weight | 3.95 ounces |
| Manufacturer | HZVEKCRI |
| Date First Available | May 16, 2025 |
9. Warranty and Support
For warranty information or technical support, please contact your retailer or the manufacturer, HZVEKCRI. Keep your purchase receipt as proof of purchase.
For further assistance, please refer to the official HZVEKCRI website or contact their customer service department.