SIEMENS
SINAMICS G150 NEMA
Introduction
1
Siemens D11.7
(Part 1) – 2013
Application of SINAMICS G150
SINAMICS G150 is an enclosed variable speed drive ideal for
all applications that involve moving, conveying, pumping or
compressing solids, liquids or gases. This includes both
variable torque applications such as pumps, fans, blowers,
and compressors, as well as constant torque applications
that do not require regeneration such as mixers, extruders
and mills.
Functionality
This compact and quiet drive includes an AC/AC power
module with state-of-the-art IGBT power semiconductors
and an innovative cooling concept.
The control can be operated in either Volts/Hertz or
sensorless vector control modes, or closed loop vector
control with encoder with the addition of the optional
encoder interface board. Control functions include,
for example:
• Critical speed avoidance (4 bands).
• Auto-restart with variable restart delay and number
of restarts.
• Restart on the fly to catch a spinning motor.
• Various braking methods including DC injection braking.
and dynamic braking using a braking chopper and resistor
• DC bus control to avoid overvoltage trips caused by high
rates of deceleration.
• Kinetic buffering where the drive draws power from the
motor while it is coasting down during a supply dip
or failure.
Energy savings is one of the prime reasons for the use of
variable frequency drives in pumping and other applications.
SINAMICS G150 includes firmware functions to maximize
energy savings, and also has application specific functions to
optimize pump operation:
• Efficiency optimization by reducing motor flux (voltage)
when operating at partial load.
• PID control for process variables such as pressure, flow rate,
temperature or fill level with “extended pump functions”
• Energy Saving (hibernation) and Enhanced Energy Saving
to shut down during low demand.
• Maintenance Cleaning prevents build-up of sedimentation
in pipelines and pumps.
• Wall Deposits Prevention prevents deposits forming on
tank walls.
The user friendly AOP30 operator panel with graphical LCD
and plain text display provides easy commissioning and
parameterization using interactive menus, and alarm and
fault logs.
Benefits
• Designed for high efficiency, low loss operation to
maximize energy savings especially for variable torque
pump, fan and compressor loads.
• Particularly quiet and compact due to the use of state-of-
the-art IGBT power semiconductors and an innovative
cooling concept.
• All components are easily accessible, making the drive
extremely service friendly.
• Increase in plant availability since individual modules and
power components can be replaced quickly and easily.
• Easy commissioning and parameterization using
interactive menus on the user friendly AOP30 operator
panel with graphical LCD and plain text display.
• Type tested, robust design provides guaranteed
performance in industrial environments.
• A broad range of standard options to optimally configure
the drive for the required environment and application.
1/5