Servo motor dynamic brake is composed of dynamic braking resistor, the failure, stop, and when the power outage after braking energy to shorten the panasonic servo motor mechanical feeding interval. Users tend to electromagnetic braking and regenerative braking, the effect of dynamic braking confusion, picked out the fault of the accessories. Regenerative braking is refers to the servo panasonic servo motor when slowing down or parking braking energy through the inverter circuit reaction to dc bus, the rc circuit and absorption. Electromagnetic brake is a mechanical device to lock panasonic servo motor shaft. The three difference (1)Operation of regenerative braking system is active, and dynamic brake and electromagnetic brake operation need external relay control. (2)Regenerative braking must be in the server to take effect, during normal operation in fault, stop, and when the power outage conditions such as unable to brake panasonic servo motor. The dynamic brake and electromagnetic brake operation without power supply. (3)Electromagnetic brake is in commonly SV OFF after launch, otherwise may form amplifier overload. Dynamic brake is in commonly the SV after power OFF or the primary loop, otherwise may form a dynamic braking resistor is overheating. Choose accessories advertent items: (1)Some system to keep the machinery to suspend the bearing to panasonic servo motor supply the larger output torque and suspension time is longer, if use servo self-locking function tend to form panasonic servo motor overheating or amplifier overload. This situation will choose panasonic servo motor with electromagnetic brake. (2)Some system such as transmission equipment, lifting equipment for servo panasonic servo motor can get parking. In fault, stop, and when the power outage server not be able to panasonic servo motor regenerative braking deceleration. System of mechanical inertia and larger at the same time, at this moment need dynamic brake dynamic brake selection should be based on the weight of the load, such as panasonic servo motor operating speed. (3)Mitsubishi server has built-in regenerative braking unit, but when regenerative braking is frequently may cause dc bus voltage is too high, then to the other with regenerative braking resistor. Regenerative braking resistor whether needs to match, match how much instructions on the use of the regenerative braking resistor can be reference samples. Demand attention to the sample list of brake is panasonic servo motor data in the light. First according to the system in the practical selection of load inertia and the panasonic servo motor inertia on the sample, calculate the moment of inertia ratio. To sample brake divided by the number on the list,Moment of inertia than + 1)。 The resulting data is allowed number of braking.
