Siemens SINUMERIK 840C - Page 540

07.97 7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
Relation between control word (MD 11004) and control word (MD 11002).
MD 1500 Status MD 1500 > 0 MD 1500 > 0 MD 1500=0
Type of 1st filter - Low-pass
(MD 1501.0 = 0)
Band-stop
(MD 1501.0 = 1)
Inactive
(MD 1501.0 = 0 or 1)
Control word
MD 11004, bit 11
1 Status word
MD 11002, bit 11 = 1
Status word
MD 11002, bit 11 = 1
Status word
MD 11002, bit 11 = 1
Control word
MD 11004, bit 11
0 Status word
MD 11002, bit 11 = 0
Status word*
MD 11002, bit 11 = 1
Status word
MD 11002, bit 11 = 1
• The 1st speed setpoint filter can be switched on/off via the control word (MD 11004, bit
11) only, if it is parameterized as low-pass (MD 1501, bit 0=0). It is not possible, if it has
been parameterized as band-stop (MD 1501, bit 0=1).
• The status word (MD 11002, bit 11) indicates the active/inactive state of the 1st speed
setpoint filter only, if the filter is parameterized and selected as low-pass and is active
(MD 1550>0, MD 1501, bit 0=0).
Type speed setpoint filter
1501
Default value Lower input limit Upper input limit Units
0000 0000 0303 Hex
Active
at once
Input of configuration of 2 speed setpoint filters. A selection of band-stop and low-pass filters
(PT2/PT1) are available. The adjustable filter parameters are entered in the appropriate
machine data.
Applications:
• The set speed filter type "band-stop filter" is used to dampen axis-specific resonant
frequencies in the position control loop.
Depending on the requirement, the function "band-stop filter" can be set in three
configurations:
- Simple band-stop filter, MD 1514/MD 1517 and MD 1515/MD 1518
- Band-stop filter with settable damping of the amplitude response, other relevant
machine data MD 1516/MD 1519
- Band-stop filter with settable damping of the amplitude response and raising or
lowering of the amplitude response after the blocking frequency, other relevant
machine data MD 1520/MD 1521.
• Interpolation with speed setpoint stairs - the speed setpoints are output in the position
controller cycle which can be set to a much greater value than the speed controller cycle
(low-pass).
Low-pass/band-stop
1st filter Bit 0
2nd filter Bit 1
0
1
0
1
Low-pass (see MD 1502/1506/1507)
Band-stop (see MD 1514/1515/1516/1520)
Low-pass (see MD 1502/1508/1509)
Band-stop (see MD 1517/1518/1519/1521)
PT2/PT1 with low-
pass
1st filter Bit 8
2nd filter Bit 9
0
1
0
1
PT2 low-pass (see MD 1506/1507)
PT1 low-pass (see MD 1502)
PT2 low-pass (see MD 1508/1509)
PT1 low-pass (see MD 1503)
* Band-stop cannot be deactivated via control word
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 7–125
SINUMERIK 840C (IA)