Parameter Details
12
12.3 b: Application
YASKAWA SIEPC71061737D GA800 Drive Technical Reference 729
■ b1-35: Digital Input Deadband Time
No.
(Hex.)
Name Description
Default
(Range)
b1-35
(1117)
Expert
Digital Input Deadband
Time
Sets the deadband time for MFDIs.
0.0 ms
(0.0 to 100.0 ms)
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.
(Hex.)
Name Description
Default
(Range)
b2-01
(0189)
DC Injection/Zero
SpeedThreshold
Sets the frequency to start DC Injection Braking, Short Circuit Braking, or Zero Servo 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.
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