5.2 b: Application
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 113
■ b1-16: Run Command Source 2
This Run command source is enabled when one of the multi-function inputs set for External Reference 1/2 (H1- = 2)
closes. Refer to Setting 2: External Reference 1/2 Selection on page 161 for instructions on using an external frequency
reference. Refer to b1-02: Run Command Source 1 on page 108 for details on the Run and Stop command source as
governed by parameter b1-02.
■
b1-17: Run Command at Power Up
This parameter is used to determine whether an external Run command that is active during power up of the drive will
start the drive or not.
Setting 0: Run Command at Power Up is not Issued
The Run command has to be cycled to start the drive.
Note: For safety reasons, the drive is initially set up not to accept a Run command at power up (b1-17 = "0"). If a Run command is
issued at power up, the RUN indicator LED will flash quickly. Change parameter b1-17 to 1 if a Run command active at power
up shall be accepted by the drive.
Setting 1: Run Command and Power Up is Issued
An external Run command active during power up is issued and the drive starts to operate the motor as soon as it gets
ready for operation (i.e. once the internal start up process is complete).
WARNING! Sudden Movement Hazard. If b1-17 is set to 1 and an external Run command is active during power up, the motor will
begin rotating as soon as the power is switched on. Proper precautions must be taken to ensure that the area around the motor is safe
prior to powering up the drive. Failure to comply may cause serious injury.
◆ b2: DC Injection Braking
These parameters determine how the DC Injection Braking/Short Circuit Braking feature operates. Parameters involving
the starting frequency, current level, braking time are located here. The current level for DC Injection at start and stop is
determined by either b2-02 or b2-10, whichever value is greater.
■
b2-01: DC Injection Braking Start Frequency
Active when “Ramp to Stop” is selected as the stopping method (b1-03 = 0). Sets the starting frequency for:
• DC Injection Braking at stop in V/f and OLV control.
• Short Circuit Braking at stop in PM OLV control.
When the output frequency while ramping to stop drops below b2-01, the drive begins DC Injection/Short Circuit
Braking in order to completely stop the motor at the end of deceleration. If b2-01 < E1-09 (Minimum Frequency), then
DC Injection/Short Circuit Braking begins at the frequency set to E1-09.
Figure 5.10
Figure 5.10 DC Injection Braking during Deceleration
No. Parameter Name Setting Range Default
b1-16 Run Command Source 2 0 to 3 0
No. Parameter Name Setting Range Default
b1-17 Run Command at Power Up 0 or 1 0
No. Name Setting Range Default
b2-01 DC Injection Braking Start Frequency 0.0 to 10.0 Hz 0.5 Hz
No.
<1> The upper limit for the setting range is determined by E1-04.
Name Setting Range Default
E1-09 Minimum Output Frequency 0.0 to 400.0 Hz <1>
Determined by A1-02 and on E5-01 in OLV for
PM.
b2-04
b2-01
DC Injection Braking
start frequency
output
frequency
braking time
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