YASKAWA GA700 Series

12.2 A: Initialization Parameters
632 YASKAWA SIEPC71061705H GA700 Series Technical Manual
• Set Related Parameters
Table 12.18 shows examples of parameter settings to use the MFDO terminal (M1-M2) as the holding brake
open and close signal.
Table 12.18 Holding Brake Open and Close Signal Setting Example
Brake Open and Close Signal Brake Open and Close Level Adjust Applicable Control Methods (A1-02 Setting Value)
Signal Name Parameter Settings Signal Name Parameter Settings
V/f
(0)
OLV
(2)
CLV
(3)
AOLV
(4)
CLV/PM
(7)
*1
Frequency (FOUT)
Detection 2
L4-07 = 0
Speed Agree Detection
Level
L4-01 = 1.0 Hz to 3.0 Hz
*2
x x - x -
H2-01 = 5
Speed Agree Detection
Width
L4-02 = 0.0 Hz to 0.5 Hz
*3
During Frequency Output H2-01 = 37
DC Injection/Zero Speed
Threshold
b2-01 = 0.1 Hz to 0.5 Hz - - x - x
*1 When A1-02 = 7 [PM Closed Loop Vector], make sure that the motor can rotate before you do Auto-Tuning or switch the encoder.
Refer to Closed Loop Vector Control for induction motors for information about the signal to use and the adjustment method.
*2 When A1-02 = 2 [Open Loop Vector], it is the usual setting range. When A1-02 = 0 [V/f Control], set L4-01 to the rated slip
frequency of the motor + approximately 0.5 Hz. If you set the value too low, motor torque will not be sufficient and it will cause
motor rollback. Set the parameters to meet these conditions at the same time. If the setting is too high, overshoot is possible at start.
• L4-01 > E1-09 [Minimum Output Frequency]
• L4-01 > L4-02 [Speed Agree Detection Width]
*3 Use L4-02 to adjust the detection width of Frequency Detection 2. If rollback occurs when the motor is stopped, set the frequency to
approximately 0.1 Hz.
Figure 12.1 Frequency Detection 2
Sequence Circuit Configuration
Use these conditions to set the circuit for the open/close sequence of the holding brake:
• Set the sequence-side operation conditions to activate terminal M1-M2 and open the holding brake.
• Set the sequence to close the holding brake in an emergency if the drive detects a fault.
• Set the sequence to open the holding brake when you enter an increase or decrease command.
Figure 12.2 Sequence Circuit Configuration Diagram
*1 L4-07 = 0 [Speed Agree Detection Selection = No Detection during Baseblock] or During Frequency Output
Time Chart
Figure 12.3 shows the open/close sequence of the holding brake.