24 Rockwell Automation Publication 750-QS100B-EN-P - August 2020
Step 3: Power Up, Configure the Modular Control Profiles
Enter the Motor Stop Mode
Select how the drive executes a stop command. For operation with a controller, Stop Mode A (parameter 10:110
[Mtr Stop Mode A]) defines the method that is used for a Normal Stop. The default motor stop mode is ‘Ramp’.
• Coast - the motor side inverter immediately stops modulating (stops gating its power devices), and stops the motor
side inverter from powering the motor. In most applications, Coast causes the motor to coast to a standstill.
• Ramp - the motor side inverter decelerates the motor from the Base speed to the Zero Speed threshold,
10:146 [Zero Speed Limit]. Active Decel Time (10:1917 [VRef Decel Time1] or 10:1918
[VRef Decel Time2]) controls the rate of deceleration. Active Decel Time sets the amount of time it takes for the
motor to decelerate from Base speed to the Zero Speed threshold. Once the motor reaches the Zero Speed
threshold, modulation is stopped (stops gating its power devices). Decel rate is defined as motor Base speed/Decel
time.
• Current Limit - the motor side inverter decelerates the motor at a rate where the Decel Time is 0.1 seconds.
Deceleration does not exceed the Current Limit to stop at this rate.
• Decel To Hold - the motor side inverter decelerates the motor from the Base speed to the Zero Speed threshold,
10:146 [Zero Speed Limit]. Active Decel Time (10:1917 [VRef Decel Time1] or 10:1918
[VRef Decel Time2]) controls the rate of deceleration. Active Decel Time sets the amount of time it takes for the
motor to decelerate from Base speed to the Zero Speed threshold. Once the motor reaches the Zero Speed
threshold, the motor side inverter holds by continuing to modulate with a zero speed (zero frequency) output.
Hold continues until there is a new start command, new run command, or another kind of stop command. Decel
rate is defined as motor Base speed/Decel time.
1. Navigate to parameter 10:110 [Mtr Stop Mode A].
2. Press the EDIT soft key.
3. Edit the value to 0 ‘Coast’, 1 ‘Ramp’, 2 ‘Current Lmt’, or 3 ‘DecelToHold’, choosing the option corresponding to
the data collected in Table 3 on page 15
.
4. Press the ENTER soft key.
To Next Page
Loading...
Need help?
General
