Brake pins:
The cable including BK pin is used for the brake motor. The cable of the non-brake motor has no BK pin.
1-4. Selection of regenerative resistance
1-4-1.Selection of regenerative resistance
When the servo motor is driven by the generator mode, the power returns to the servo amplifier side, which is
called regenerative power. The regenerated power is absorbed by charging the smooth capacitor of the servo
amplifier. After exceeding the rechargeable energy, the regenerative resistance is used to consume the
regenerative power.
The servo motor driven by regenerative (generator) mode is as follows:
The deceleration stop period during acceleration and deceleration operation;
Running vertically and axially;
When the external load drives the motor to rotate.
Servo driver model Regenerative resistance connection terminals
DS5□-□□P□-PTA
(1) Using built-in regenerative resistance, short P + and D terminals, P + and
C are disconnected.
(2) Use external regenerative resistance for 5.5kw and below drivers,
connect regenerative resistance to P + and C terminals, remove P + and D
short wiring, P0-25 = power value, P0-26 = resistance value.
(3) Use external regenerative resistance for 5.5kw~11kw drivers, connect
regenerative resistance to P + and PB terminals, P0-25 = power value, P0-26
= resistance value.
(4) For 22kw servo drivers, connect regenerative resistance to the brake
unit.
Note: if software version U2-07 < 3700, the parameter P0-24 should be set.
The firmware version U2-07 ≥ 3700, P0-24 does not need to be set and can
be kept as the default.
The following table is the recommended specifications of external regenerative resistance for each type of
motor.
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