TWM458734U - A plus power braking function of the permanent magnet motor drive - Google Patents

Abstract

This invention to solve z axis motor power often decline because of load weight, Using permanent magnet motor winding short circuit stopping properties, Permanent magnet motor drives, increase the relays, voltage drop detection circuit and control relay contacts open circuit for a short time the resistance to reach power braking function in real time.

Description

Permanent magnet type motor driver with electric breaker function

This creation adds a power-off and braking function to the permanent magnet motor driver.

When the Z-axis motor is powered off, it often falls due to the weight of the load. In order to prevent the slip, the external weight is usually used or an electromagnetic power-off brake is installed.

This creation system uses the permanent magnet motor coil winding short-circuit braking characteristics to increase the permanent magnet motor driver, relay, voltage drop detection circuit and anti-relay action when the short-circuit contact open-circuit resistance, to achieve the power-off instant brake function, no need to add Heavy or installed electromagnetic brakes.

RELAY‧‧‧Contact

NC‧‧‧ normally switched on

NO‧‧‧Open the road normally

COM‧‧‧ common

Figure 1 is a two-phase permanent magnet motor driver, the circuit diagram of the function of adding and breaking the brakes, and Figure 2 is the circuit diagram of the three-phase permanent magnet motor driver with the function of breaking the electric brake.

As shown in Figure 1 or Figure 2, Q1 R1 ZENER D1 RELAY constitutes a voltage drop detection circuit. As shown in Figure 1 or Figure 2, R is a short-time contact open-circuit resistance when the relay is activated. The permanent-magnet motor driver output is connected via a relay contact. To permanent magnet motor, permanent magnet motor drive The power supply is connected, the voltage drop detection circuit V+ and the ground, the relay contacts NO and COM are connected to the anti-relay when the short-circuit contact open-circuit resistance is applied. When the permanent-magnet motor driver is normally powered, the permanent magnet motor driver outputs the relay contacts. NO to COM to permanent magnet motor works normally. When the power supply drops, the voltage drop detection circuit causes the relay action contact to jump from NO to NC for a short time. When the anti-relay action occurs, the short-circuit contact open-circuit resistance to COM to permanent magnet The motor, when the contact is to the NC, short-circuits the winding of the permanent magnet motor coil by COM, and the short-circuit braking function of the permanent-magnet motor coil winding is realized, the power supply continues to drop to the power-off, and the permanent-magnet motor coil winding is continuously short-circuited. When the relay is operated, the short-circuit contact is open, so that the permanent-magnet motor coil winding is connected for a short time, and there is no brake for a short time, so the open-circuit resistance is short-circuited when the anti-relay action is applied.

RELAY‧‧‧Contact

NC‧‧‧ normally switched on

NO‧‧‧Open the road normally

COM‧‧‧ common

R‧‧‧Short-circuit contact open-circuit resistance when anti-relay action

Q1 R1 ZENER D1 RELAY‧‧‧ constitutes a voltage drop detection circuit

Claims (1)

A permanent magnet type motor driver with a function of breaking the electric brake, comprising a relay, a voltage drop detecting circuit and a short-time contact open-circuit resistance when the anti-relay action is performed, wherein the permanent magnet type motor driver output is connected to the permanent magnet type motor via the relay contact , permanent magnet motor driver power supply, voltage drop detection circuit, relay contact NO and COM connected to the anti-relay action short-time contact open-circuit resistance, which is characterized by voltage drop before power-off by the voltage drop detection circuit to make the relay move early In addition, the anti-relay action is short-circuit contact open-circuit resistance, so that it can instantly achieve the permanent-magnet motor coil winding short-circuit braking function.