Commissioning
5.9 Parameters
Control Units CU240S
112
Operating Instructions, 07/2008 - FW 3.2, A5E00766042B AD
Can be changed
"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 "Can be
changed". 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 5-17 Parameter attributes - Can be changed
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 the inverter. 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.
Table 5-18 Parameter attributes - Data types
Data type
Description
U16
Unsigned, integer value with a size of 16 bits
U32
Unsigned, integer value with a size of 32 bits
I16
Signed integer 16-bit value
I32
Signed integer 32-bit value
Float
A simple precise floating point value according to the IEEE standard format
max. value range: -3.39e+38 –+3.39e+38
Unit
The values of parameters support the following units:
Table 5-19 Parameter attributes - Unit
Unit
Description
Unit
Description
-
No dimension
m/s
Meters per second
%
Percentage
Nm
Newton meter
A
Ampere
W
Watt
V
Volt
kW
Kilowatt
Ohm
Ohm
Hp
Horse power
us
Microseconds
kWh
Kilowatt hours
ms
Milliseconds
°C
Degrees Celsius
s
Seconds
m
Meter
Hz
Hertz
kg
Kilograms
kHz
Kilohertz
°
Degrees (angular degrees)
1/min
Revolutions per minute [RPM]