SCHNEIDER LC1D65M7 l/O scanner

Product Detailed Description

• Function: The primary function of the LC1D65M7 is to switch 3-phase AC power circuits. It is commonly used for:

• Motor Control (AC-3 duty): Starting and stopping 3-phase asynchronous (induction) motors. It can handle the high inrush currents during motor start-up.

• Resistive Load Switching (AC-1 duty): Switching non-inductive or slightly inductive loads such as heating, lighting, and distribution circuits.

• Interfacing: It acts as an interface between the control circuit (low voltage from PLC, pushbuttons) and the power circuit (high voltage to the motor or load).

• Design and Operation:

• 3-Pole: It has three main power poles for controlling three phases of an AC supply.

• Coil Operated: The contactor is operated by an electromagnetic coil. When the coil is energized with 220 V AC, it creates a magnetic field that pulls the main contacts closed, allowing power to flow. When the coil is de-energized, springs open the contacts, interrupting the power.

• Auxiliary Contacts: It typically comes with built-in auxiliary contacts (e.g., 1 normally open (NO) and 1 normally closed (NC)) which are used for interlocking, signaling, and control circuit feedback. Additional auxiliary contact blocks can often be added for more complex control schemes.

• Mounting: Designed for 35mm DIN rail mounting or screw mounting directly to a panel.

• Durability: Built to withstand frequent switching operations and industrial conditions.

Product Parameters

(Note: These are typical parameters for the LC1D65M7. Always refer to the official Schneider Electric TeSys D contactor catalog or datasheet for the exact and complete specifications.)

• Model Number: LC1D65M7

• Main Poles: 3

• Auxiliary Contacts (Built-in): 1 NO + 1 NC (Standard)

• Rated Operating Current (AC-3):

• 18.5 kW at 220-230 V AC

• 30 kW at 380-400 V AC

• 37 kW at 415 V AC

• 37 kW at 440 V AC

• 37 kW at 500 V AC

• 45 kW at 660-690 V AC

• 65 A at <= 440 V AC for motor control

• Typical motor power for AC-3:

• Rated Operating Current (AC-1):

• 80 A at <= 690 V AC for resistive loads

• Coil Voltage (Uc): 220 V AC 50/60 Hz

• Rated Insulation Voltage (Ui):

• 690 V for power circuit (IEC 60947-4-1)

• 600 V for power circuit (UL 508, CSA C22.2 No 14)

• Rated Impulse Withstand Voltage (Uimp): 6 kV

• Mechanical Durability: Typically 8 million operating cycles

• Electrical Durability (AC-3): Typically 1.4 million operating cycles (at rated current and voltage)

• Operating Temperature: -5°C to +60°C (23°F to 140°F)

• Storage Temperature: -60°C to +80°C (-76°F to 176°F)

• Mounting: DIN rail or screw mounting

• Dimensions (W x H x D): Approx. 55 mm x 122 mm x 120 mm (dimensions may vary slightly by exact series/revision)

• Weight: Approx. 0.86 kg

• Terminals: Screw clamp terminals

• Standards: IEC 60947, UL 508, CSA C22.2 No 14, EN 60947, VDE 0660

Product Advantages

• Reliability & Durability: TeSys D contactors are renowned for their robust construction, high mechanical and electrical endurance, ensuring a long operational life in demanding industrial applications.

• Compact Size: Space-saving design allows for efficient use of panel space, especially important in crowded control cabinets.

• Versatility: Suitable for both motor control (AC-3) and resistive load switching (AC-1), offering flexibility across various applications.

• Ease of Integration: Standardized auxiliary contacts and mounting options make it easy to integrate into new or existing control systems.

• Global Compliance: Meets major international standards (IEC, UL, CSA), simplifying adoption in global projects.

• Wide Range of Accessories: A comprehensive ecosystem of accessories (additional auxiliary contact blocks, surge suppressors, mechanical interlocks, reversing kits) allows for customization and expansion.

• Safety: Designed with safety in mind, contributing to safe motor control and system operation.

Precautions

• Correct Sizing: Always select the contactor based on the motor's full load current (FLA) and the duty cycle (AC-3 for motors, AC-1 for resistive loads). Undersizing can lead to premature failure.

• Coil Voltage: Ensure the control circuit voltage matches the contactor's coil voltage (220 V AC in this case). Incorrect voltage will prevent operation or damage the coil.

• Overload Protection: A contactor provides switching, not overload protection. Always pair the contactor with an appropriate thermal overload relay (e.g., TeSys LR9D or LR3D) to protect the motor from sustained overcurrents.

• Wiring: Follow the wiring diagrams in the manual. Use correct wire gauges for power and control circuits. Ensure all connections are tightened to the specified torque values to prevent loose connections and overheating.

• Environmental Conditions: Operate the contactor within its specified temperature and humidity ranges. Avoid excessive dust, moisture, and corrosive atmospheres unless explicitly designed for such conditions.

• Arcing Space: Ensure sufficient clear space around the contactor, especially above and below the main contacts, to allow for proper arc quenching during switching operations.

• Maintenance: Periodically check connections for tightness and cleanliness. While TeSys D contactors are low maintenance, observing abnormal sounds or signs of overheating should prompt investigation.

• Safety: Always de-energize circuits before installing, wiring, or performing maintenance on the contactor. Use appropriate personal protective equipment (PPE).

Product Applications

The Schneider Electric LC1D65M7 contactor is a workhorse in various industrial and commercial applications:

• Motor Control:

• Starting and stopping pumps (water, oil, chemical).

• Controlling fans and blowers in HVAC systems and industrial ventilation.

• Operating conveyors and material handling systems.

• Switching motors in machine tools, mixers, compressors, and packaging machinery.

• Building Automation:

• Switching lighting circuits (especially large loads).

• Controlling heating elements.

• HVAC system control.

• Power Distribution:

• As components in simple power distribution panels for switching non-motor loads.

• Industrial Processes:

• General purpose switching in process control systems.

• Interfacing with PLCs and other control devices.

• Agricultural Equipment:

• Controlling motors in irrigation systems, feed systems, etc.

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