Centrifugal Pumps - blog

Centrifugal Pumps Optional Modes of Operation

Centrifugal Pump Control - Start and Stop
This option is used to reduce surges during the starting and stopping of a Centrifugal Pump  by smoothly accelerating and decelerating the motor. The microprocessor analyzes the motor variables and generates commands which control the motor and reduce the possibility of surges occurring in the system. The Centrifugal Pump control module also provides a built-in anti-backspin timer.

Centrifugal Pump  Braking Control
SMB Smart Motor Braking
This option provides motor braking for applications that require the motor to stop faster than a coast to rest. Braking control, with automatic zero speed shut off, Centrifugal Pump is fully integrated into the compact design of the SMC controller. This design facilitates a clean, straight forward installation and eliminates the requirement for additional hardware such as braking contactors, resistors, timers, and speed
sensors. Centrifugal Pump The microprocessor based braking system applies braking current to a standard squirrel-cage induction motor. The strength of the braking current is programmable from 150…400% of full-load current.

Accu-Stop
Centrifugal Pump This option is used in applications requiring controlled position stopping. During stopping, braking torque is applied to the motor until it reaches preset slow speed (7% or 15% of rated speed) and holds the motor at this speed until a stop command is given.Centrifugal Pump  Braking torque is then applied until the motor reaches zero speed.
Braking current is programmable from 0…400% of full-load current. Slow Speed Current is programmable from 0…450% of full-load current. Slow speed can be programmed for either 7% (low) or 15% (high).

Slow Speed with Braking
Centrifugal Pump Slow Speed with Braking is used on applications that require slow speed (in the forward direction) for positioning or alignment and also require braking control to stop. Slow speed adjustments are 7% (low) or 15% (high) of rated speed.Centrifugal Pump  Slow speed acceleration current is adjustable from 0…450%. Slow speed running current is adjustable from 0…450% of full-load current. Braking current is
adjustable from 0…400%.

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