b1-03: Stopping Method Selection

No. (Hex.)	Name	Description	Default (Range)
b1-03 (0182)	Stopping Method Selection	Sets the method to stop the motor after removing a Run command or entering a Stop command.	0 (0 - 3)

Select the applicable stopping method for the application from these four options:

0

Ramp to Stop

When you enter the Stop command or turn OFF the Run command, the drive ramps the motor to stop.

The drive ramps the motor to stop as specified by the deceleration time. The default setting for the deceleration time is C1-02 [Deceleration Time 1]. The actual deceleration time changes as the load conditions change (for example, mechanical loss and inertia).

If the output frequency is less than or equal to the value set in b2-01 [DC Injection/Zero SpeedThreshold] during deceleration, the drive will do DC Injection Braking, Zero Speed Control, or Short Circuit Braking, as specified by the control method.

• Ramp to Stop with V/f Control and OLV Control Methods

  Parameter b2-01 sets the frequency to start DC Injection Braking at stop. If the output frequency is less than or equal to the value set in b2-01 during deceleration, then the drive will perform DC Injection Braking for the time set in b2-04 [DC Inject Braking Time at Stop].

  

  Note:

  When b2-01 ≤ E1-09 [Minimum Output Frequency], the drive will start DC Injection Braking from the frequency set in E1-09.

• Ramp to Stop with OLV/PM, AOLV/PM, and EZOLV Control Methods

  Parameter b2-01 sets the frequency to start Short Circuit Braking. When the output frequency is less than or equal to the value set in b2-01 during deceleration, then the drive will do Short Circuit Braking for the time set in b2-13 [Short Circuit Brake Time @ Stop]. When b2-04 ≠ 0, the drive will do DC Injection Braking for the time set in b2-04 when Short Circuit Braking is complete.

  

  Note:

  When b2-01 ≤ E1-09, the drive will start Short Circuit Braking from the frequency set in E1-09.

  If b2-01 = 0 Hz and E1-09 = 0 Hz, the drive will not do Short Circuit Braking.

1

Coast to Stop

When you enter the Stop command or turn OFF the Run command, the drive turns OFF the output and coasts the motor to stop.

Load conditions will have an effect on the deceleration rate as the motor coasts to stop (for example, mechanical loss and inertia).

Note:

When you enter the Stop command or turn OFF the Run command, the drive ignores the Run command for the time set in L2-03 [Minimum Baseblock Time]. Do not enter the Run command until the motor comes to a complete stop. Use DC Injection or Speed Search to restart the motor before it stops.

2

DC Injection Braking to Stop

When you enter the Stop command or turn OFF the Run command, the drive turns OFF the output for the time set in L2-03. The drive waits for the minimum baseblock time and then injects the amount of DC current into the motor set in b2-02 [DC Injection Braking Current] to stop the motor with DC current.

DC Injection Braking stops the motor more quickly than coast to stop.

Note:

If A1-02 = 5, 6, DC Injection Braking to Stop is not available.

The value set in b2-04 and the output frequency when the drive receives the Stop command determine the DC Injection Braking time. The drive calculates the DC Injection Braking time as in Figure 5.

Note:

Set L2-03 to a high value that will not trigger oC [Overcurrent] when the drive uses DC Injection Braking to stop the motor.

3

Coast to Stop with Timer

Enter the Stop command or turn OFF the Run command and turn OFF drive output and coast the motor to stop. The drive ignores the Run command until the “Run wait time t” is expired.

To start the drive again, wait until the the “Run wait time t” is expired then enter the Run command.

The active deceleration time and the output frequency when drive receives the Stop command determine the length of “Run wait time t”.