User's Guide | Introduction to Otong Servo Driver Terminals and Power Supply Circuit Connection
2021-06-17
User's Guide | Introduction to Otong Servo Driver Terminals and Power Supply Circuit Connection [This article mainly introduces the wiring terminals and circuit connection through the SIZE-A model of Aotong]] The name and function of the interface terminal of the Otto servo driver STO safety function interface terminal Brake Resistor Wiring Example Diagram of wiring using internal braking resistor (PRA/PRB both ends are short-circuited with short-circuiting piece) brake resistor wiring note: ① When using an external braking resistor, please remove the short piece between PRA and PRB, otherwise the braking resistor will be damaged by overcurrent; The braking resistor resistance value can not be lower than the minimum allowable value, otherwise it will cause r220 alarm or damage to the drive; ③ Please install the external braking resistor on metal and other incombustible materials. Power Wiring Examples △ The figure shows the motor power line, encoder line and power line. Diagram of wiring of motor power line, encoder line and power line △ Single-phase 220VAC main circuit wiring △ Three-phase 380V main circuit wiring Main circuit wiring note: ① Please confirm that the CHARGER indicator light is off before checking. ② Please ground the servo drive reliably. ③ It is forbidden to connect the input power line to the output U, V and W, otherwise it will damage the drive or cause other dangerous accidents. ④ There is no phase sequence requirement for the input side wiring of the main loop of the servo driver, but the shielding layer of the input side cable of the main loop of the servo driver and the PE terminal on the driver need to be grounded together. ⑤ If the cable is bundled and used in pipelines, etc., it may cause deterioration of heat dissipation conditions, and the allowable current reduction rate should be considered. ⑥ Use a cable with a suitable bending radius to ensure that the bending radius is more than 10 times the outer diameter of the cable itself to prevent the long-term bending of the cable from causing the internal core to break. ⑦ The braking resistor must be wired according to the regulations, otherwise it may cause fire or other hazards. Do not bind the power cord and signal line together or too close to each other, should be more than 30cm apart to avoid interference. ⑨ Ensure that the terminal is installed and fastened, and do not power on the cable when it is loose, which is easy to cause accidents such as electric shock. ⑩ Please use cables with rated voltage above AC600V and rated temperature above 75 ℃. Under the conditions of surrounding 30 ℃ and normal heat dissipation, the allowable current density of wires using cables should not exceed 8A/mm when the total current is below 50A, and should not exceed 5A/mm when the total current is above 50A. Please do not frequently ON/OFF the power supply. When continuous ON/OFF power supply is required, please control it below 1 minute. Since there is a capacitor in the power supply part of the servo driver, a large charging current (charging time 0.2 seconds) will flow when the power supply is turned on. Frequent ON/OFF power will cause the performance of the main circuit components inside the servo driver to deteriorate. Do not power on the terminal block when the screw is loose or the cable is loose, which may cause a fire.
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