Operating instructions

Commissioning (software)
2.2 Parameters
Control Units CU240S
Operating Instructions (Compact), 04/2006, A5E00766042B AA
2-5
Access level
The access level is controlled using parameter P0003. In this case, only those parameters
are visible at the OP, where the access level is less than or equal to the value assigned in
parameter P0003. On the other hand, for STARTER, only access levels 0 and 3 are relevant.
For example, parameters with access level 3 cannot be changed if the appropriate access
level has not been set.
The following access levels are implemented in the SINAMICS G120 inverter units:
Table 2-2 Parameter attributes - access level
Access level Description
0 User-defined parameter list (refer to P0013)
1 Standard access to the most frequently used parameters
2 Extended access, e.g. to inverter I/O functions
3 Expert access only for experienced users
4 Service access only for authorized service personnel – with password
protection.
Note
In STARTER, all of the user parameters (access stage 3) are always displayed using the
expert list – for the setting p0003 = 0, 1, 2 or 3.
When changing parameters using STARTER, or via a high-level control system, parameter
value changes always become immediately effective.
Change state
"P" parameters can only be changed depending on the inverter state. The parameter value is
not accepted if the instantaneous state is not listed in the parameter attribute "Change state".
For instance, the quick commissioning parameter P0010 with the attribute "CT" can only be
changed in quick commissioning "C" or ready "T" but not in operation "U".
Table 2-3 Parameter attributes - Change state
State Description
C Quick commissioning
U Operation (Drive running)
T Drive ready to run
Data types
The data type of a parameter defines the maximum possible value range. Five data types
are used for SINAMICS G120. They either represent an unsigned integer value (U16, U32)
or a floating-point value (float). The value range is frequently restricted by a minimum and
maximum value (min, max) or using inverter/motor quantities.