Siemens SINUMERIK 840C Installation Instructions Manual page 448

12.93
233
Speed at start of field weakening motor 2
Default value
Depends on motor
Input of speed at which field weakening starts as specified on the motor data sheet (non-
Siemens motor) or automatic parameterization using machine data "Motor code number" (MD
238). 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
234
Default value
Depends on motor
Input of motor maximum speed as specified on the motor data sheet (non-Siemens motor) or
automatic parameterization using machine data "Motor code number" (MD 238).
235
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 238). In the field-weakening range, the magnetizing reactance X
increases linearly from the saturated value at the speed at which field weakening begins to the
unsaturated value at the upper limit speed of the X
Note:
If the value is unknown, then 100 % must be entered in order to obtain constant magnetizing
reactance over the entire speed range.
236
Breakdown torque reduction factor motor 2
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 %.
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Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
Lower input limit
100
characteristic (see diagram MD 175).
Motor maximum speed motor 2
Lower input limit
0
Gain factor X -characteristic motor 2
h
Lower input limit
100
) of the X characteristic (magnetizing reactance) as specified on
h
characteristic (see diagram MD 175).
h
Lower input limit
1
6FC5197- AA50
7 Drive Machine Data (SIMODRIVE Drive MD)
7.1.2 MSD MD (data description - SW 3)
Upper input limit
6 000
increases linearly from the
h
Upper input limit
20 000
Upper input limit
300
Upper input limit
150
Active on
Power On
Units
rev/min
Active on
Power On
Units
rev/min
Active on
Power On
Units
%
h
Active
at once
Units
%
7–33