11.2 A: Initialization Parameters
YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
579
Function
Notes
I/O phase loss protection, overtorque
detection function
To prevent falls due to phase loss, set the following relevant parameters.
•
L8-05 = 1 [Input Phase Loss Protection Sel = Enabled]
•
L8-07 = 1 [Output Phase Loss Protection Sel = Fault when one phase is lost]
•
S6-01 and S6-04 = 1 to 6 [OverT Detect Operation Select = Enabled]
•
S6-02 and S6-05 [Overtorque Detection Level 1/2]
•
S6-03 and S6-06 [Overtorque Detection Time 1/2]
Note:
Execute safety measures such as fall detection on the machine side.
External baseblock command
•
If the external baseblock signal set in
H1-01 to H1-10 = 8 or 9 [Terminal S1 to S10 Function Selection = Baseblock Command]
is
entered during run, the motor immediately coasts to stop. Do not enter an unnecessary external baseblock command while the
motor is operating.
•
When using an external baseblock command for the fast stop and operation startup interlocks, load the sequence which firmly
locks the holding brake while the external baseblock command is entered.
•
When the external baseblock command is immediately removed after it is entered, the drive will not output the voltage within the
time set in
L2-03 [Minimum Baseblock Time]
. Do not use an external baseblock command for applications involving frequent
Run/Stop execution.
Accel & Decel Time
If the acceleration and deceleration times for the drive side are set short without factoring the mechanical operation delay time of the
holding brake, the holding brake could operate late, or could experience overcurrent at startup, brake grinding and rollback when
stopping. In this case, consider using a brake sequence. Parameters used to adjust holding brake timing are available.
Electromagnetic contactor on the drive
output side
Usually you must not install the electromagnetic contactor between the drive and motor. When you must install an electromagnetic
contactor to use one drive to switchover more than one motor, follow these precautions:
•
Load a sequence that opens and closes the electromagnetic contactor when both of the following conditions are satisfied at once.
Unless there is an emergency.
–
The holding brake is fully closed
–
The drive terminals for
H2-xx = 8 or 1B [MFDO Function Selection = During Baseblock]
are ON
•
If the electromagnetic contactor is opened and closed during motor control or during DC Injection Braking (or zero speed
control), fault detections may occur due to the effects of the surge voltage and the motor direct input current.
•
When you install the electromagnetic contactor between the drive and the motor, set
L8-07 = 1 or 2 [Output Phase Loss
Protection Sel = Fault when one phase is lost or Fault when two phases are lost]
.
S-Curve Characteristics, Accel & Decel Time
Adjustment Parameter
Name
C1-01, C1-03, C1-05, C1-07
Acceleration Time 1 to 4
C1-02, C1-04, C1-06, C1-08
Deceleration Time 1 to 4
C2-01
S-Curve Time @ Start of Accel
C2-02
S-Curve Time @ End of Accel
C2-03
S-Curve Time @ Start of Decel
C2-04
S-Curve Time @ End of Decel
Figure 11.5 S-curve Characteristics, Accel & Decel Time
Note:
•
When decreased operation times are necessary for the application, for example with cranes and hoists, do not use S-curve characteristic
times.
•
The default setting for
C2-04 [S-Curve Time @ End of Decel]
will be 0.00 seconds. The default setting for other S-curve characteristics
will be 0.20 seconds. Set the acceleration/deceleration times and S-curve characteristic time correctly for acceleration/deceleration start
up and end. The recommended setting of the S-curve characteristics time is 0.2 to 1.0 seconds.
•
When you use the
C1-11 [Accel/Decel Time Switchover Freq]
, you can switch the acceleration/deceleration rate automatically during
acceleration/deceleration. The default setting is disabled.
When the Output Frequency ≥
C1-11
, operate at the acceleration and deceleration times set in
C1-01
and
C1-02
When the Output Frequency <
C1-11
, operate at the acceleration and deceleration times set in
C1-07
and
C1-08
•
During low speed operation, if the Output Frequency <
E1-09 [Minimum Output Frequency]
in the S-Curve Time @ Start of Decel, the
drive will cancel the S-curve characteristics and will do DC Inject Braking at Stop (zero speed control).
Содержание CR700
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