Siemens SINUMERIK 840C Installation Instructions Manual page 437

7 Drive Machine Data (SIMODRIVE Drive MD)
7.1.2 MSD MD (data description - SW 3)
175
Default value
Depends on motor
Input of gain factor (X /X
h2 h1
the motor data sheet (non-Siemens motor) or automatic parameterization using machine data
"Motor code number" (MD 96).
In the field-weakening range, the magnetizing reactance X
saturated value at the speed at which field weakening begins to the unsaturated value at the
upper limit speed of the X
h
MD 173/MD 233
X
h
X
h2
100 %
Rated value X
h1
MD 173/MD 233
Note:
If the value is unknown, then 100 % should be entered in order to obtain constant magnetizing
reactance over the entire speed range.
176
Breakdown torque reduction factor motor 1
Default value
100
Input of breakdown torque reduction factor as specified on the motor data sheet. The point at
which the breakdown torque limit is applied can be altered in this machine data.
Settings of higher than 100 % increase the point at which the limit is applied and vice versa
with settings of lower than 100 %.
7–22
Gain factor X -characteristic motor 1
h
Lower input limit
100
) of the X characteristic (magnetizing reactance) as specified on
h
characteristic (see diagram MD 175).
MD 175/MD 235
MD 172/MD 232
Lower input limit
1
©
Siemens AG 1992 All Rights Reserved
Upper input limit
300
increases linearly from the
n
n
n
Upper input limit
150
SINUMERIK 840C (IA)
12.93
Active on
Power On
Units
%
Active
at once
Units
%
6FC5197- AA50