B6: Dwell Function - YASKAWA CIPR-GA50C series Technical Manual

■
b5-96: EZ Sleep Wake-up Time
No.
Name
(Hex.)
b5-96 EZ Sleep Wake-up Time
(0B96)
RUN
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].
■
b6-01: Dwell Reference at Start
No.
Name
(Hex.)
b6-01 Dwell Reference at Start
(01B6)
When the drive accelerates to the output frequency set in b6-01, it holds that frequency for the time set in b6-02
[Dwell Time at Start], and starts to accelerate again.
■
b6-02: Dwell Time at Start
No.
Name
(Hex.)
b6-02 Dwell Time at Start
(01B7)
■
b6-03: Dwell Reference at Stop
No.
Name
(Hex.)
b6-03 Dwell Reference at Stop
(01B8)
When the drive decelerates to the output frequency set in b6-03, it holds that frequency for the time set in b6-04
[Dwell Time at Stop] and starts to decelerate again.
YASKAWA SIEPC71061753A GA500 Technical Manual
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the EZ Wake-up time.
Figure 12.34 Time Chart for the Dwell Function at Start/Stop
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the output frequency that the drive will hold momentarily when the motor starts.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the length of time that the drive will hold the output frequency when the motor starts.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the output frequency that the drive will hold momentarily when ramping to stop the motor.
Description
Description
Description
Description
12.3 b: Application
Default
(Range)
1.0 s
(0.0 - 1000.0 s)
Figure 12.34
Default
(Range)
0.0
(Determined by A1-02)
Default
(Range)
0.0 s
(0.0 - 10.0 s)
Default
(Range)
0.0
(Determined by A1-02)
12
515