Typical Application Scenarios of CHINT Push Button NP2-11BN

As a 1NO+1NC self-resetting control button, CHINT NP2-11BN is widely used in manual command input scenarios of various industrial control circuits and electrical equipment, thanks to its reliable contact switching, vibration-resistant structure and compatibility with conventional industrial voltages. Specific classifications are as follows:

1. Motor Control Circuits

This is the core application field of the button. By virtue of its self-resetting and dual-contact characteristics, it realizes multiple control logics of motors:

1. Jog Control

Scenarios: Fine-tuning of machine tool worktables, jog discharge of conveyor belts, precise positioning of crane hooks.

Logic: When the button is pressed, the normally open contact closes, the contactor coil is energized, and the motor runs; when the button is released, the contact resets and disconnects, and the motor stops immediately, avoiding continuous no-load operation of the equipment.

2. Interlocked Start-stop Auxiliary Control

Scenarios: Emergency stop interlock of production line motors, pre-start prompt of equipment.

Logic: The normally closed contact can be connected in series in the emergency stop circuit to keep the circuit conducting under normal conditions; the normally open contact controls the start indicator light, which turns on to prompt that the equipment is about to run when pressed, and turns off when released, achieving both operation prompt and circuit protection.

1. Industrial Equipment Operation Panels

It is suitable for local manual operation of various fixed equipment, and applicable to installation scenarios such as control cabinets and operation consoles:

1. 工作機械設備: Jog control buttons for spindle rotation and tool feeding/retracting of lathes, milling machines and grinders.
2. 自動生産ライン: Command input for production line pause/start, station switching and material pushing.
3. HVAC and Pump Valve Equipment: Jog test of water pumps and fans, manual opening and closing control of valves.

Compatibility: The panel opening size of Φ22.3mm is an industrial standard size, which can be directly embedded into the panel of conventional control cabinets. The screw fixing method is vibration-resistant, suitable for frequent operation during equipment running.

Ⅲ. Signal Switching of Electrical Systems

With the reverse on-off characteristics of its dual contacts, it realizes switching and interlocking of signal circuits:

1. Indicator Light Switching Control

Scenarios: Switching between equipment running status indicator light and standby indicator light.

Logic: When the button is pressed, the normally open contact conducts to light up the running light, and the normally closed contact disconnects to turn off the standby light; when released, it automatically resets to the initial state, suitable for short-time status prompt.

2. Command Triggering of PLC Input Circuits

Scenarios: Manual signal input and program debugging trigger of automation systems.

Logic: The button contacts are connected to the digital input module of PLC. When pressed, it sends a level signal to PLC to trigger preset program actions (such as process jump and parameter reset). The self-resetting characteristic ensures that the command is only valid when pressed, preventing program mis-triggering.

1. Simple Control in Restricted Environments (Auxiliary Protection Required)

The button has an IP40 protection rating and is suitable for dry, dust-free indoor environments. If it needs to be used in special environments, protective accessories can be added to expand the application scenarios:

1. Dusty Workshops: After installing a dust cover, it can be used as the operation button of building materials and grain processing equipment.
2. Light Oil-contaminated Environments: With waterproof sealing rings, it can be used for manual control of machine tool hydraulic systems.

注記: Do not directly use it in outdoor, humid or corrosive gas environments to avoid contact oxidation and failure.