Siemens SINUMERIK 840C - Manual (Page 512)

07.97 7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
Breakdown torque reduction factor 1145
Default value Lower input limit Upper input limit Units
100.0 5.0 1 000.0 %
Active
at once
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 % (see graphic representation MD 1230).
Note:
This data is relevant only for MSD drives.
Motor maximum speed 1146
Default value Lower input limit Upper input limit Units
1 500.0 0.0 50 000.0 rev/min
Active on
Power On
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 1102).
Speed limitation 1147
Default value Lower input limit Upper input limit Units
7 000.0/8 000.0 0.0 50 000.0 rev/min
Active
at once
Input of the maximum permissible speed of the motor or an automatic parameterization
(initialization) is calculated or taken over and performed for this machine data through the
operator action Calculate controller data on the basis of the machine data Motor rated speed
(MD 1400) x 120% for FDD and Motor maximum speed (MD 1146) for MSD. If the speed
actual value is exceeded by more than 2% of the set limit, the motor torque limit is internally
set to 0, i.e. further acceleration is prevented. If the setting is made accordingly, it is possible
for the ”Speed controller at stop” monitoring function to respond (response threshold MD 1606
< MD 1147 and response time MD 1605 short). The default depends on the motor type
(FDD ˆ
= 7000, MSD ˆ = 8000) and is configured by the drive configuration by the time of start-
up.
Note:
Only the minimum from the input value and the value specified according to the motor is
effective.
Speed at breakdown (as from SW 6) 1148
Default value Lower input limit Upper input limit Units
0.0 -100 000.0 100 000.0 rev/min
Active
at once
Speed display at which torque curve drops after 1/n2 function
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 7–97
SINUMERIK 840C (IA)