Rockwell Automation 1560E SMC Flex Smart Motor Controller - Manual (Page 13)

Product Overview 1-3
SMC-Flex™ Control Module (cont.)
Other features that offer further user benefit include:
• Extensive protection features
• Metering
• Communication capability
Innovative control option provides enhanced performance:
• Pump Control (Start and Stop Control modes)
These modes, features and options are further described in this chapter.
: This option utilizes gating patterns which result in motor and line currents that produce noise and vibration
in the motor and/or distribution transformer. The factory should be consulted before applying this option.
Starting Modes Soft Start
This mode has the most general application. The motor is given an initial
torque setting, which is user-adjustable from 0 to 90% of locked-rotor
torque. From the initial torque level, the output voltage to the motor is
steplessly increased during the acceleration ramp time. The acceleration
ramp time is user-adjustable from 0 to 30 seconds. Once the MV SMC-Flex
controller senses that the motor has reached the up-to-speed condition during
the voltage ramp operation, the output voltage automatically switches to
full voltage, and the bypass contactor is closed.
Figure 1.1– Soft Start