11.2 A: Initialization Parameters
YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
577
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Notes when Opening and Closing the Brake Without the Crane Sequence
When you open or close the brake without the crane sequence, read the safety descriptions and precautions
carefully, and use the drive safely and correctly.
Conditions to Open and Close the Brake
Set
L4-07 = 0 [Speed Agree Detection Selection = No Detection during Baseblock]
to open and close the holding
brake.
When
L4-07 = 1 [Detection Always Enabled]
, the output frequency increases when you input the Run command
although the external baseblock command is input. Because of this, speed detection operates and will open the
brake signal.
•
Set Related Parameters
The table below shows examples of parameter settings to use the MFDO terminal (M1-M2) as the holding brake
open and close signal.
Table 11.8 Holding Brake Open and Close Signal Setting Example
Brake Open and Close Signal
Brake Open and Close Level Adjust
Applicable Control Method (A1-02 Setting)
Signal Name
Parameter Settings
Signal Name
Parameter Settings
V/f
(0)
OLV
(2)
CLV
(3)
AOLV
(4)
Frequency (FOUT)
Detection 2
L4-07 = 0
Speed Agree Detection
Level
L4-01 = 1.0 Hz to 3.0 Hz
x
x
-
x
H2-01 = 5
Speed Agree Detection
Width
L4-02 = 0.0 Hz to 0.5 Hz
During Frequency Output
H2-01 = 37
DC Injection/Zero
SpeedThreshold
b2-01 = 0.1 Hz to 0.5 Hz
-
-
x
-
*1
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. Be sure to set the setting value to agree with these two conditions at the same time. However, if the setting value is
too high, shock will likely occur during start up.
•
L4-01 > E1-09 [Minimum Output Frequency]
•
L4-01 > L4-02 [Speed Agree Detection Width]
*2
The detection width of Frequency Detection 2 can be adjusted with
L4-02
. If rollback occurs when the motor is stopped, change the
frequency to approximately 0.1 Hz.
Figure 11.1 Frequency Detection 2
Sequence Circuit Configuration
Set the circuit for the open/close sequence of the holding brake as follows.
•
Set the sequence which opens the holding brake by turning terminal M1-M2 on when the sequence side
operation conditions are met.
•
Set the sequence so that the holding brake will be firmly closed when a fault signal is detected in the event of an
emergency.
•
If a raise or lower command is entered, set the sequence so that the holding brake will be open.
Figure 11.2 Sequence Circuit Configuration Diagram
*1
L4-07 = 0 [Speed Agree Detection Selection = No Detection during Baseblock]
or During Frequency Output
Содержание CR700
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