Siemens SINUMERIK 840C Installation Instructions Manual page 560

07.97
1632
Default value
30
Input of response threshold of DC link voltage. In conjunction with machine data "Response
voltage generator axis" (MD 1631), this data defines the voltage range for the upper threshold
of the two-step controller for generator operation.
Note:
This machine data is described under the additional function "Extended shutdown and
retraction (G420...G426)", see Programming Guide 840C.
1633
Default value
510
Input of cutout threshold of DC link voltage. If the voltage exceeds this threshold value, the
motor switches from generator mode back to normal operation.
Note:
This machine data is described under the additional function "Extended shutdown and
retraction (G420...G426)", see Programming Guide 840C.
1634
Response threshold emergency retraction
Default value
400
Input of response threshold of DC link voltage; if the voltage drops below this value,
emergency retraction responses are initiated according to the operating modes selected in
machine data "Drive modes emergency retraction" (MD 1636).
Note:
This machine data is described under the additional function "Extended shutdown and
retraction (G420...G426)", see Programming Guide 840C.
1635
Default value
0.0
Input of minimum DC link generator speed. Bit 3 in the ZK2 register is set if the speed drops
below the value set here. This message is output to inform the NC that the drive operaing in
generator mode (MD 1636) has reached a speed at which the NC should initiate an
emergency retraction.
Note:
This machine data is described under the additional function "Extended shutdown and
retraction (G420...G426)", see Programming Guide 840C.
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
Voltage step for generator control
Lower input limit Upper input limit
0
Cutout threshold generative mode
Lower input limit Upper input limit
0
660 (as from SW 6)
Lower input limit Upper input limit
0
660 (as from SW 6)
Minimum speed generator axis
Lower input limit Upper input limit
0.0
6FC5197- AA50
7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
300
580
580
50 000.0 1/min
Active
at once
Units
V
Active
at once
Units
V
Active
at once
Units
V
Active
at once
Units
7–145