Page 4–60
DURApulse GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
Chapter 4: AC Drive Parameters
Timing Charts for Y-∆ Starting:
What happens when Y-∆ switching occurs properly:
•
The delta confirmation signal is generated, and the drive output continues
ON
ON
ON
ON
ON
ON
P3.03~P3.16 = 27
If switch point is 60Hz, the accel
switch point is 62Hz
Decel switch point
is 58Hz
Bandwidth is 2Hz
Motor speed will
decrease
by load inertia
P2.20 Y-switch freqency
Motor speed / frequency
Run Cmd.
Wye-Connected Output
P3.17~P3.26 = 29
Wye-Connected Confirm Input
P3.03~P3.16 = 27
Delta-Connected Output
P3.17~P3.26 = 30
Delta-Connected Confirm Input
P3.03~P3.16 = 28
Mechanical bounce time
P2.20 Delay Time for Y-connection / D-con-
nection (Min is 0.2 seconds)
In this area, motor is in free run status,
AC motor drive stops outputting
What happens when Y-∆ switching does not occur properly:
•
In this example, the delta-connection confirmation input does not turn on� Two seconds after
Delay Time for Y-D Switching (P2�22) has elapsed, the GS4 drive sets a Y-D Connect Error (61)�
GS4 drive output Frequency
Wye-Connected Output
P3.17~P3.26 = 29
Wye-Connected Conrm Input
P3.03~P3.16 = 27
Delta-Connected Output
P3.17~P3.26 = 30
Delta-Connected Confirm Input
P3.03~P3.16 = 28
Y-∆ Connect Error (ydc) [Error #61]
ON
ON
ON
ON
2 seconds
delay time
To Next Page
Loading...
Need help?
General
