12.93 7 Drive Machine Data (SIMODRIVE Drive MD)
7.2.2 FDD MD (data description - SW 3)
Power section code
1106
Default value Lower input limit Upper input limit Units
0000 0000 00FF Hex
Active on
Power On
When the power section order number (machine-readable product designation for Siemens
power sections) is input during initial start-up, it is converted to a code number as an MMC
function (the user need not enter a code number). The following power section data are
automatically transferred from an internal power section table through the input of the code
number:
• Limit current transistor (MD 1107)
• maximum thermal current of the power section (MD 1108)
Format of power section code number:
Power section type
0
1
MSD
FDD
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Not assigned
Amperage
0
1
No power section specified
3 / 6 A
2
3
4
5
6
7
8
9
A
B
C
D
E
F
5 / 10 A
Not assigned
9 / 18 A
Not assigned
18 / 36 A
28 / 56 A
Not assigned
56 / 112 A
70 / 140 A
Not assigned
Limit current transistor
1107
Default value Lower input limit Upper input limit Units
200 1 500 A
Active on
Power On
Input of maximum permissible current of power section. This input makes allowance for the
rating of the transistors minus thermal reserves (approximately 20 %). The maximum current
must be set as a peak value independently of the pulse frequency. This machine data is
automatically parameterized for Siemens power sections by the machine data "Power section
code" (MB 1106).
Caution:
This data serves as the basis for normalizing the current actual value sensor and must not be
changed by the user after automatic presetting of its values.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 7–53
SINUMERIK 840C (IA)