Siemens MICROMASTER 420 - Manual (Page 40)

3 Functions Issue 07/04
MICROMASTER 420 Operating Instructions
40 6SE6400-5AA00-0BP0
Table 3-1 Parameter attributes
Attribute
group
Attribute Description
The data type of a parameter defines the maximum possible value range. 3 data
types are used for MICROMASTER. They either represent an unsigned integer value
(U16, U32) or a floating-point value (float). The value range is frequently restricted by
a minimum, maximum value (min, max) or using drive inverter/motor quantities.
U16 Unsigned, integer value with a size of 16 bits,
max. value range: 0 .... 65535
U32 Unsigned, integer value with a size of 32 bits
max. value range: 0 .... 4294967295
Data types
Float A simple precise floating point value according to the IEEE standard format
max. value range: -3.39e
+38 – +3.39e +38
The value range, which is specified as a result of the data type, is restricted/limited by
the minimum, maximum value (min, max) and using drive inverter/motor quantities.
Straightforward commissioning (start-up) is guaranteed in so much that the
parameters have a default value. These values (min, def, max) are permanently
saved in the drive inverter and cannot be changed by the user.
- No value entered (e.g.: "r parameter")
Min Minimum value
Def Default value
Value range
Max Maximum value
For MICROMASTER, the units of a particular parameter involve the physical quantity
(e.g. m, s, A). Quantities are measurable properties/characteristics of physical
objects, operations, states and are represented using characters of a formula (e.g. V
= 9 V).
- No dimension
% Percentage
A Ampere
V Volt
Ohm Ohm
us Microseconds
ms Milliseconds
s Seconds
Hz Hertz
kHz Kilohertz
1/min Revolutions per minute [RPM]
m/s Meters per second
Nm Newton meter
W Watt
kW Kilowatt
Hp Horse power
kWh Kilowatt hours
°C Degrees Celsius
m Meter
kg Kilograms
Unit
° Degrees (angular degrees)