Siemens SINUMERIK 840C Installation Instructions Manual page 424

10.94
50
Switching speed from M
Default value
4 x rated motor
speed
Input of speed at which switchover from the 1st torque limit (MD 39) to the 2nd torque limit
(MD 41) takes place. This switchover is implemented only if the appropriate bit has been set in
the PLC control word and the switchover speed set in MD 50 has been exceeded.
52
Default value
0000
Note:
This machine data is not included in the machine data lists. During start-up in machine data
dialog, the machine data is set or altered as appropriate via the configuration setting.
The machine data can be saved from the RAM to the FEPROM by setting this machine data to
the value 1 H.
53
Default value
0000
A range of control functions can be selected and altered by entering bit patterns in the control
word.
Selection of bits:
Not assigned
Ramp-function generator
rapid stop
Not assigned
Speed setpoint smoothing
Not assigned
Inverter pulse frequency
Division interrupt
error message
Ramp-function generator
automatic control
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Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
to M
d1
Lower input limit Upper input limit
Maximum motor
0
Transfer machine data to FEPROM
Lower input limit Upper input limit
0000
Control word
Lower input limit Upper input limit
0000
Bit 0
Bit 1 0: The motor remains connected to the supply after
shutdown by the ramp generator rapid stop
function
1: The motor is isolated from the supply when the
speed drops below the internal n
after shutdown by the ramp generator rapid stop
function
Bits 2-3
Bit 4 0: Function is active only if the appropriate bit has
been set in the PLC control word
1: Function is always active
Bits 5-8
Bits Bit 9 = 0 and bit 10 = 0 : Selection of 3.44 kHz
9-10 Bit 9 = 0 and bit 10 = 1 : Selection of 4.95 kHz
Bit 9 = 1 and bit 10 = 0 : Selection of 6.60 kHz
Bit 9 = 1 and bit 10 = 1 : Selection of 8.11 kHz
Bit 11 0: Message is displayed
1: Message is concealed
Bit 12 0: Ramp-function generator automatic control active
1: Ramp-function generator automatic control
deactivated
6FC5197- AA50
7 Drive Machine Data (SIMODRIVE Drive MD)
7.1.2 MSD MD (data description - SW 3)
motor 1
d2
Units
rev/min
speed
Units
0001 Hex
Units
FFFF Hex
speed value
min
Active
at once
Active
at once
Active
at once
7–9