No.

(Hex.)

Name

Description

Default

(Range)

b2-01

(0189)

DC Injection/Zero SpeedThreshold

Sets the frequency to start DC Injection Braking or Short Circuit Braking near the end of a stop ramp.

Determined by A1-02

(0.0 - 10.0 Hz)
Note:

This parameter is available when b1-03 = 0 [Stopping Method Selection = Ramp to Stop].

When the control method selected in A1-02 [Control Method Selection] changes, the b2-01 function changes.

 

Parameter Settings

Functions of b2-01

A1-02 = 0, 2 [V/f or OLV]

Parameter b2-01 sets the frequency to start DC Injection Braking at stop. When the output frequency is less than or equal to the value set in b2-01, the drive will inject the quantity of DC current set in b2-02 [DC Injection Braking Current] into the motor for the time set in b2-04 [DC Inject Braking Time at Stop].

Figure 1. DC Injection Braking 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.

A1-02 = 5, 6, or 8 [OLV/PM, AOLV/PM, or EZOLV]

Parameter b2-01 sets the frequency to start Short Circuit Braking at stop. When the output frequency is less than or equal to the value set in b2-01, the drive will do Short Circuit Braking for the time set in b2-13 [Short Circuit Brake Time @ Stop]. When b2-04 > 0.00 s, the drive will complete Short Circuit Braking, then do DC Injection Braking for the time set in b2-04.

Figure 2. Short Circuit Braking at Stop
Note:

When b2-01 ≤ E1-09, the drive will start Short Circuit Braking from the frequency set in E1-09. If b2-01 and E1-09 = 0 Hz, the drive will not do Short Circuit Braking.