SIEMENS
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Siemens D 35 · 2017
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SINAMICS G120P built-in and wall-mounted units
Control Units
CU230P-2 Control Units
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Overview
Example: CU230P-2 PN Control Unit
The CU230P-2 Control Units are designed for drives with inte-
grated technological functions for pump, fan and compressor
applications. The I/O interface, the fieldbus interfaces and the
additional software functions optimally support these applica-
tions.
Note:
Shield plates and shield connection kits are available. These can
be used in the wiring installation for the Control Units and
PM230/PM240P-2 Power Modules to ensure that it complies with
EMC guidelines.
For more information, see Shield connection kits and shield
plates for Control Units and Power Modules in section
Supplementary system components.
PM330 Power Modules are supplied with the accessories
needed to create an EMC-compliant wiring installation for
Control Units and Power Modules. The Control Unit mounting
surface on the Power Modules has mounting slots for shielding
terminals.
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Function
Below is a list of functions sorted according to the following
categories:
Control modes
•
Linear and quadratic torque characteristic for fluid flow and
positive displacement machines
•
ECO mode for additional energy saving in U/f control mode
•
Sensorless vector control for sophisticated control tasks and
high-output motors
Connections
•
2 analog inputs (current/voltage can be selected) to directly
connect pressure/level sensors
•
2 additional analog inputs to connect Pt1000/LG-Ni1000/
DIN-Ni1000 temperature sensors
•
Direct control of valves and flaps using two 230 V AC relays
Interfaces
•
PROFINET, EtherNet/IP, PROFIBUS, USS, BACnet MS/TP,
FLN P1, and Modbus-RTU communication
Software functions
•
Automatic restart function after power failure
•
Automatic restart
•
Flying restart
•
Skip frequencies
•
1 PID controller for the closed-loop control of the motor speed
as process controller for temperature, pressure, air quality or
levels
•
3 freely-programmable PID controllers
•
Hibernation mode
•
Load check function to monitor belts and flow
•
Cascade connection
•
Multi-zone controller
•
Essential service mode
•
Real time clock with three time generators
IOP wizards for special applications with and without
PID controller, such as
•
Pumps: Positive displacement (constant load torque) and
centrifugal pumps (quadratic load torque)
•
Fans: Radial and axial fans (quadratic load torque)
•
Compressors: Positive displacement (constant load torque)
and fluid flow machines (quadratic load torque)
© Siemens AG 2017