Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) - Manual (Page 70)

70 Rockwell Automation Publication 7760-UM001D-EN-P - October 2014
Chapter 3 Programming
Full Voltage Start The SMC Flex controller may be programmed to provide a full voltage start
(output voltage to the motor reaches full voltage within 1/4 second) with the
following programming:
Table 15 - Full Voltage Start Parameter and Options
Linear Speed The SMC Flex provides the user the ability to control the motor speed during
starting and stopping maneuvers. A tach input is required as specified in
Linear
Speed Acceleration and Deceleration on page 26 . (See also Table 53 on
page 142 .)
Table 16 - Linear Speed Parameters and Options
Stop Control The SMC Flex can be programmed to extend the motor stop time beyond the
normal coast-to-rest time. There are two standard stop modes:
• Soft Stop
• Linear Speed Deceleration.
Table 17 - Stop Control Parameters and Options
Note: Options that control the stopping of the motor (Soft Stop, Pump Stop,
Linear Speed, Braking) require the self-powered gate drivers to be pre-charged by
the current loop power supply. If this supply is not present, an alarm symbol will
appear at the upper right corner of the control module display, and the options
will be inhibited. When the motor is stopped, it will coast. If the supply is
restored, the alarm symbol will be cleared and the module will perform the
programmed sequence.
Parameter Description Option
Starting Mode This must be programmed for Full Voltage. Full Voltage
Parameter Description Option
Starting Mode This must be programmed for Linear Speed. Linear Speed
Ramp Time
(1)
Programs the time period that the controller will ramp from 0 speed to full voltage. 0...30 s
(1)
Kickstart Time A boost of current is provided to the motor for the programmed time period. 0.0...2.2 s
Kickstart Level Adjusts the amount of current applied to the motor during the kickstart time. 0...90% locked rotor torque
(1) For ramp times greater than 30 s, set “Ramp Time” to zero and program “Ramp Time E” (parameter 129) to the new time. Do not exceed the thermal capacity of the controller.
Parameter Description Option
Stopping Mode This may be set to one of two standard choices.
(1)
Soft Stop
Linear Speed
(2)
Stop Time Allows the user to set the time period for the stopping function. 0...120 s
(3)
(1) Refer to Chapter 6 for optional stop control modes.
(2) A motor tachometer is required (refer to page 26 )
(3) Consult factory if settings over 30 seconds are required. The base rating of the MV SMC-Flex is two starts (or one start/stop combination) per hour, 30 seconds maximum for each operation. A stopping
operation counts as a start for purposes of thermal capacity calculations.