Schneider Electric TeSys Deca Green LC1D12EHE Contactor Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective installation, operation, and maintenance of the Schneider Electric TeSys Deca Green LC1D12EHE Contactor. This device is designed for integration into control systems, primarily for motor starter applications.

The TeSys D Green contactors are engineered for reliability and performance in industrial electrical systems. Please read this manual thoroughly before proceeding with any installation or operation.

2. Product Features

• Type: IEC contactor, TeSys Deca Green, non-reversing.
• Current Rating: 12A inductive.
• Horsepower Rating: 7.5HP at 480VAC (3-phase).
• Short Circuit Current Rating (SCCR): Up to 100kA when used with appropriate protection.
• Coil Voltage: 48/130VAC/VDC wide band electronic coil, low consumption.
• Auxiliary Contacts: One normally open (NO) and one normally closed (NC) built-in (NC contact is mirror certified).
• Mounting: DIN rail or direct panel mounting.
• Terminals: Screw clamp terminals for load and auxiliary connections.
• Certifications: UL, CSA, IEC, CCC, EAC, Marine standards. RoHS/REACh compliant (Green Premium product).

3. Safety Information

WARNING: Risk of electric shock or explosion.

• Installation, adjustment, repair, and maintenance must be performed by qualified personnel only.
• Disconnect all power before working on the equipment.
• Always use properly rated voltage sensing devices to confirm power is off.
• Use only specified voltage for the control coil.
• Ensure proper grounding and wiring according to local and national electrical codes.
• Failure to follow these instructions can result in death, serious injury, or equipment damage.

4. Setup and Installation

The LC1D12EHE contactor can be mounted on a DIN rail or directly to a panel using screws.

4.1. Mounting

DIN Rail Mounting:

1. Ensure the DIN rail is securely fastened within the enclosure.
2. Hook the top edge of the contactor onto the DIN rail.
3. Press the bottom of the contactor firmly until it clicks into place.

Panel Mounting:

1. Identify the mounting holes on the contactor base.
2. Mark and drill appropriate holes on the panel surface.
3. Secure the contactor using screws of suitable size and length.

4.2. Wiring

Refer to the wiring diagram provided with your specific application or system. The contactor features screw clamp terminals for both power and auxiliary connections.

• Power Terminals (1L1, 3L2, 5L3, 2T1, 4T2, 6T3): Connect the main power circuit to these terminals. Ensure correct phase sequence for 3-phase applications.
• Control Coil Terminals (A1, A2): Connect the 48-130VAC/VDC control voltage to these terminals.
• Auxiliary Contacts (13 NO, 14 NO, 21 NC, 22 NC): Use these contacts for control circuit interlocking, signaling, or other auxiliary functions.

Always verify all connections are tight and secure before applying power.

Figure 1: Front view of the LC1D12EHE Contactor, showing main power terminals (1L1, 3L2, 5L3, 2T1, 4T2, 6T3), auxiliary contacts (13 NO, 14 NO, 21 NC, 22 NC), and coil terminals (A1, A2).

5. Operation

The TeSys Deca Green contactor is designed for switching electrical loads, primarily motors, in industrial control applications. When the appropriate control voltage (48-130VAC/VDC) is applied to the coil terminals (A1 and A2), the contactor's main contacts close, allowing power to flow to the connected load.

• Energizing the Coil: Applying the specified voltage to A1 and A2 will energize the coil, causing the main power contacts (1L1-2T1, 3L2-4T2, 5L3-6T3) to close. Simultaneously, the built-in auxiliary contacts will change state (NO contacts close, NC contacts open).
• De-energizing the Coil: Removing the voltage from A1 and A2 will de-energize the coil, causing the main power contacts to open and the auxiliary contacts to return to their original state.

Ensure the control circuit is properly designed and protected to prevent unintended operation or damage.

6. Maintenance

Regular inspection and maintenance are crucial for ensuring the long-term reliability and safe operation of the contactor.

• Power Disconnection: Always disconnect all power to the contactor and associated circuits before performing any maintenance.
• Visual Inspection: Periodically inspect the contactor for signs of wear, damage, discoloration, or loose connections. Check for dust or debris accumulation.
• Terminal Tightness: Verify that all screw clamp terminals are securely tightened. Loose connections can lead to overheating and component failure.
• Contact Condition: While the contactor is de-energized, visually inspect the main contacts for excessive pitting or erosion. Severely worn contacts may require replacement of the contactor.
• Cleaning: Use a dry, lint-free cloth to clean the exterior of the contactor. Do not use solvents or abrasive cleaners.

Do not attempt to repair internal components. If the contactor is damaged or malfunctioning, replace the unit.

7. Troubleshooting

This section provides guidance for common issues. For complex problems, consult a qualified electrician or Schneider Electric technical support.

8. Specifications

9. Warranty and Support

For warranty information, please refer to the official Schneider Electric website or contact your authorized distributor. Schneider Electric products are typically covered by a standard manufacturer's warranty against defects in materials and workmanship.

For technical assistance, product support, or to locate a service center, please visit the Schneider Electric official website or contact their customer service department.