Control Units - Siemens SINAMICS BOP-2 Operating Instructions Manual

Design of the frequency converter

1.1 Control Units

1.1 Control Units
Different Control Unit versions
The Control Units differ by the following main factors:
● Fieldbus interface type
● Type and scope of the functions
● Type and number of available inputs and outputs
CU230P-2... CU230P-2 HVAC
Functions
Fieldbus USS or Modbus RTU or BACnet MS/TP
Technology For instance: Energy-saving mode, cascade control, extended emergency operation, multi-zone
functions controller, bypass
Digital inputs
Analog inputs AI0 and AI1: Voltage or current; AI2: Current or temperature sensor (Ni1000/PT1000);
AI3: Temperature sensor (Ni1000/PT1000);
Digital outputs
Analog outputs
CU240B/E-2... CU240B-2
Functions
Fieldbus USS or
Modbus RTU
Integrated safety -
functions
Digital inputs
Fail-safe digital
inputs*
Analog inputs
Digital outputs
Analog outputs
*) A fail-safe digital input is created by combining two "standard" digital inputs
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– e.g. for CU230P-2... through additional specific technology functions for pumps, fans
and compressors
– e.g. for CU240E-2... through additional integrated safety functions
CU240B-2 DP CU240E-2
PROFIBUS
DP
-
4
-
1
1
1
CU230P-2 CAN
CANopen
6
3
2
CU240E-2 F
USS or USS or
Modbus RTU Modbus RTU
STO STO, SS1,
SLS
1 3
Frequency converters with Control Units CU230P-2; CU240B-2; CU240E-2
CU230P-2 DP
PROFIBUS DP
CU240E-2 DP CU240E-2 DP-F
PROFIBUS PROFIBUS DP
DP with PROFIsafe
STO STO, SS1, SLS
6
1
2
3
2
Getting Started, 01/2011, A5E02792536C AB
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