Siemens SINUMERIK 840C - Manual (Page 424)

10.94 7 Drive Machine Data (SIMODRIVE Drive MD)
7.1.2 MSD MD (data description - SW 3)
Switching speed from M
d1
to M
d2
motor 1 50
Default value Lower input limit Upper input limit Units
4 x rated motor
speed
0
Maximum motor
speed
rev/min
Active
at once
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.
Transfer machine data to FEPROM 52
Default value Lower input limit Upper input limit Units
0000 0000 0001 Hex
Active
at once
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.
Control word 53
Default value Lower input limit Upper input limit Units
0000 0000 FFFF Hex
Active
at once
A range of control functions can be selected and altered by entering bit patterns in the control
word.
Selection of bits:
Not assigned Bit 0
Ramp-function generator
rapid stop 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
min
speed value
after shutdown by the ramp generator rapid stop
function
Not assigned Bits 2-3
Speed setpoint smoothing Bit 4 0: Function is active only if the appropriate bit has
been set in the PLC control word
1: Function is always active
Not assigned Bits 5-8
Inverter pulse frequency Bits
9-10 Bit 9 = 0 and bit 10 = 0 : Selection of 3.44 kHz
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
Division interrupt
error message Bit 11 0: Message is displayed
1: Message is concealed
Ramp-function generator
automatic control Bit 12 0: Ramp-function generator automatic control active
1: Ramp-function generator automatic control
deactivated
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 7–9
SINUMERIK 840C (IA)