238
YASKAWA
TOEPYAIGA8002B GA800 Drive Programming
When
b5-09 = 0
, and the PID feedback is less than the value of
“
PID setpoint value -
b5-94
”
for a time longer than
the value of
b5-96
, the drive will exit sleep and start operation again. When
b5-09 = 1
, and the PID feedback is
more than the value of
“
PID setpoint value +
b5-94
”
for a time longer than the setting value of
b5-96
, the drive will
exit sleep and start operation again.
■
b5-95: EZ Sleep Wake-up Mode
No.
(Hex.)
Name
Description
Default
(Range)
b5-95
(0B95)
EZ Sleep Wake-up Mode
Sets the wake-up mode to use when exiting Sleep Mode.
0
(0, 1)
0 : Absolute
1 : Setpoint Delta
■
b5-96: EZ Sleep Wake-up Time
No.
(Hex.)
Name
Description
Default
(Range)
b5-96
(0B96)
RUN
EZ Sleep Wake-up Time
Sets the EZ Wake-up time.
1.0 s
(0.0 - 1000.0 s)
When the PID feedback is less than the value of
b5-94 [EZ Sleep Wake-up Level]
continuously for the time set in
b5-
96
, the drive will exit sleep and start operation again.
◆
b6: Dwell Function
The Dwell function momentarily holds the output frequency at start and stop.
This prevents motor speed loss when you start and stop heavy loads. The Dwell function is also enabled when
backlash on the machine side causes sudden movement at the start of acceleration and deceleration.
At the start of acceleration, the drive uses the output frequency and acceleration time set for the Dwell function to
automatically operate at low speed to minimize the effects of backlash. Then, the drive can accelerate again. The
Dwell function operates the same for deceleration.
For conveyor applications, the Dwell function also lets the drive interlock the output frequency and a delay time for
the holding brake on the load side.
The Dwell function momentarily stops during acceleration to prevent a PM motor from stepping out.
shows how the Dwell function works.
Note:
When you use the Dwell function at stop, set
b1-03 = 0 [Stopping Method Selection = Ramp to Stop]
.
Figure 2.40 Time Chart for the Dwell Function at Start/Stop
■
b6-01: Dwell Reference at Start
No.
(Hex.)
Name
Description
Default
(Range)
b6-01
(01B6)
Dwell Reference at Start
Sets the output frequency that the drive will hold momentarily when the motor starts.
0.0
(Determined by A1-02)
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
