Electrical control circuit board installation requirements

1. Plate is installed on all of the electric control device name, model and the parameters of the working voltage, the color of the button, etc. , should be correct, installation is strong, pride of place should be labeled text symbols of each device. 2. The color of the connection wire can be used ( 1) Grounding protection conductor ( PE) Must use yellow green double color line; ( 2) The three-phase power supply U, V, W use yellow, green, red trichromatic, respectively; ( 3) Ac control circuits in red; ( 4) Dc control circuit USES blue. 3. The insulation of the conductor and the pressure to conform to the requirements of the circuit; For internal wiring board, request line horizontal flat vertical, neat, reasonable, contact shall not loose; For control panel outside wiring for movable conductor should put appropriate allowance, insulation casing ( Or metal hose) Don't sustain tension in the movement. 4. When installation relative position and choose the color of the button ( 1) 'Stop' button should be placed in the 'start' button below or on the left, with two 'start' button control in the opposite direction, 'stop' button can be installed in the middle. ( 2) 'Stop' and 'stop' in red, 'start' in green. 5. Install the color of the light red - Dangerous or alarm yellow - Warning green - Security white - The power switch