YASKAWA GA700 Technical Manual page 581

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Notes when Applying the Drive to the Elevator
When applying the drive for an elevator application, read the safety descriptions and precautions well, and use the
device in a safe and proper manner.
Brake Open and Close Conditions
Be sure to set L4-07 = 0 [Speed Agree Detection Selection = No detection during baseblock] as a condition in
which to close and open the holding brake.
Setting L4-07 = 1 [Detection always enabled] causes the output frequency to rise if the Run command is input
even when the external baseblock command is input. For this reason, speed detection operates and will result in
the brake signal opening.
• Setting of Related Parameters
The table below shows examples of parameter settings that are utilized when using the MFDO terminal (M1-
M2) as the holding brake open and close signal.
Table 11.15 Holding Brake Open and Close Signal Setting Example
Brake Open and Close Signal
Parameter
Signal Name
Settings
L4-07 = 0
Frequency (FOUT)
Detection 2
H2-01 = 5
During Frequency
H2-01 = 37
Output
*1 If A1-02 = 7 [PM Closed Loop Vector Control], when auto-tuning or switching the encoder, the motor needs to be in a state in which
it is capable of rotating. For the signal that is used and the adjustment method, refer to the Closed Loop Vector Control for the
induction motor.
*2 It is the normal setting range when A1-02 = 2 [Open Loop Vector Control]. When A1-02 = 0 [V/f Control], set L4-01 to the rated slip
frequency of the motor + approx. 0.5 Hz. If the setting value is set too low, it may lead to insufficient motor torque and cause
rollback. Be sure to set the setting value so that it satisfies the following two conditions simultaneously. However, if the setting value
is too high, shock will likely occur during startup.
• L4-01 > E1-09 [Minimum Output Frequency]
• L4-01 > L4-02 [Speed Agree Detection Width]
*3 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 around 0.1 Hz.
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.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Brake Open and Close Level Adjust
Parameter
Signal Name
Settings
Speed Agree L4-01 = 1.0 Hz to 3.0
Detection Level Hz
*2
Speed Agree L4-02 = 0.0 Hz to 0.5
Detection Width Hz
*3
DC Injection/Zero b2-01 = 0.1 Hz to 0.5
Speed Threshold Hz
Figure 11.1 Frequency Detection 2
11.2 A: Initialization Parameters
Applicable Control Methods (A1-02
setting value)
V/f OLV CLV
(0) (2) (3)
x x -
- - x
CLV/PM
(7)
*1
-
x
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