SINAMICS G120
Standard inverters 0.37 kW to 250 kW (0.5 hp to 400 hp)
CU230 Control Units
4/12
Siemens D 11.1 · 2009
4
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Overview
Example: CU230P-2 HVAC Control Unit with Intelligent Operator Panel
IOP on the PM240 Power Module, frame size FSC
The CU230P-2 Control Units are especially suitable for drives
with integrated technological functions for pump, fan and com-
pressor applications. The I/O interface, the fieldbus interfaces
and the additional software functions optimally support these
applications. The integration of technological functions is a sig-
nificant differentiating feature to the other Control Units of the
SINAMICS G120 drive family.
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Selection and ordering data
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Function
Closed-loop control
• Linear and square torque characteristics for fluid flow and
positive displacement machines
• ECO mode for additional energy saving
• Vector control without encoder for sophisticated control tasks
Connections
• Two analog inputs (current/voltage can be selected) to directly
connect pressure/level sensors
• Two additional analog inputs to connect NI1000/PT1000 tem-
perature sensors
• Direct control of valves and flaps using two 230 V relays
Interfaces
• PROFIBUS, USS, CANopen and Modbus RTU communication
Software functions
• Automatic restart function after power failure
• Flying restart
• Kinetic buffering (V
dc min
control)
• PID controller for temperature, pressure, air quality, level
• Energy saving using the “hibernation mode”
• Load check function to monitor belts and flow
• Real time clock with three time generators
IOP wizards for special applications such as e.g.
• Pumps: Positive displacement (constant load torque) and
centrifugal pumps (square load torque) with and without
PID controller
• Fans: Radial and axial fans (square load torque) with and with-
out PID controller
• Compressors: Positive displacement (constant load torque)
and fluid flow machines (square load torque) with and without
PID controller
Communication Digital inputs Digital outputs Analog inputs Analog outputs Designation Control Unit
Order No.
Standard
RS485/USS;
Modbus RTU
6342CU230P-2HVAC6SL3243-0BA30-1HA0
PROFIBUS DP 6 3 4 2 CU230P-2 DP 6SL3243-0BA30-1PA0
CANopen 6 3 4 2 CU230P-2 CAN 6SL3243-0BA30-1CA0
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