Product Overview 1-13
1560D-UM051D-EN-P – February 2005
Coast-to-rest
Soft Stop
Kickstart
Initial
Torque
100%
Percent
Voltage
Time (seconds)
Start
Run Soft Stop
Coast-to-rest
Soft Stop
Kickstart
Initial
Torque
100%
Percent
Voltage
Time (seconds)
Start
Run Soft Stop
Figure 1.12 – Soft Stop Option
Soft Stop is not intended to be used as an emergency
stop. Such usage may result in severe injury or death.
Refer to the applicable standards for emergency stop
requirements.
Pump Control Option
This option reduces surges during the starting and stopping of a centrifugal
pump by smoothly accelerating and decelerating the motor. The micro-
processor analyzes the motor variables and generates commands that control
the motor and reduce the possibility of surges occurring in the system.
The motor current will vary during the acceleration period, and may be
near the motor rated starting current. The pump algorithm does not limit
starting current since full voltage is needed to reach full speed with a
loaded motor.
The starting time is programmable from 0-30 seconds, and the stopping
time is programmable from 0-120 seconds.
Application Considerations
1. Consult factory if start time settings over 30 seconds are required.
The base rating of the MV Dialog Plus is two starts (or one start/stop
combination) per hour, thirty seconds maximum for each operation.
A stopping operation counts as a start for purposes of thermal capacity
calculations.
2. The Pump Control option functions only for centrifugal pumps. It is
not suited for positive displacement, piston, or other types of pumps.
A T T E N T I O NA T T E N T I O N
To Next Page
Loading...
Need help?
General
