Rockwell Automation 1305 AC Drive, Series A and B, Firmware 4.xx-5.xx - Manual (Page 94)

Chapter 5 – Programming
5-22
Advanced Set Up Group (cont.)
[Stop Select] Parameter # 10 Factory Default ‘‘Ramp” [Stop Select]
Parameter Type Read & Write
This parameter selects the stopping mode when the drive
re e ves v d s p
d
Units None Settings ‘‘Coast” Causes the Drive to Turn Off Immediately This parameter selects the stopping mode when the drive
receives a valid stop command.
‘‘Ramp” Drive Decelerates to 0 Hz, Then Turns Off – Requires
a Value In [Decel Time 1] or [Decel Time 2]
‘‘DC Brake” Injects DC Braking Voltage Into the Motor – Requires a
Value in Both [Decel Hold Time] & [Decel Hold
Level].
‘‘S-Curve” Drive ramps to stop using a fixed ‘‘S-Curve” profile.
Stop time is twice the selected decel time.
[DC Hold Time] Parameter # 12 Factory Default 0 Sec [DC Hold Time]
Parameter Type Read & Write Minimum 0 Sec
This value sets the amount of time that the [DC Hold
Level] voltage will be applied to the motor when the stop
mode is set to either ‘‘DC Brake” or ‘‘Ramp.” When in
‘‘Coast ” mode and the drive is stopped and restarted
within the [DC Hold Time] setting, the speed will resume
at the output frequency prior to the stop command. Units 1 Second Maximum 15 Sec
[DC Hold Time]
Figure 5.13 Ramp Figure 5.14 DC Brake
Volts and Speed
y
Voltage
y
Stop Command Stop Command
[DC Hold Time]
[DC Hold Level] [DC Hold Level]
Time Time
Speed
Speed
Voltage
Volts and Speed