B2: Dc Injection Braking And Short Circuit Braking - YASKAWA GA800 Programming Manual

■
b1-35: Digital Input Deadband Time
No.
Name
(Hex.)
b1-35 Digital Input Deadband
Time
(1117)
Expert
When the on/off time for MFDIs is longer than the time set in b1-35, the drive activates the MFDI. Set this parameter
to prevent malfunctions caused by relay chattering for applications in which relays send input to MFDI terminals.
◆

b2: DC Injection Braking and Short Circuit Braking

b2 parameters set the DC Injection Braking and Short Circuit Braking functions.
• DC Injection Braking: A braking method that injects DC current into the motor windings. This function should not
be used too frequently, because it generates a fair amount of heat in the motor.
• Short Circuit Braking: A braking method for PM motors.
■
b2-01: DC Injection/Zero SpeedThreshold
No.
Name
(Hex.)
b2-01 DC Injection/Zero
SpeedThreshold
(0189)
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.
YASKAWA TOEPYAIGA8002B GA800 Drive Programming
V/f CL-V/f OLV CLV AOLV
Sets the deadband time for MFDIs.
V/f CL-V/f OLV CLV AOLV
Sets the frequency to start DC Injection Braking, Short Circuit Braking, and Zero Servo.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
2.3 b: Application
Default
(Range)
0.0 ms
(0.0 to 100.0 ms)
Default
(Range)
Determined by A1-02
(0.0 - 10.0 Hz)
2
207