Computer Drive Installation Instructions

7 Drive Machine Data (SIMODRIVE Drive MD) 04.96
7.3.2 Drive MD (data description)
Drive operating modes Emergency retraction
1636
Default value Lower input limit Upper input limit Units
0 0 7 -
Active
at once
Input to select various operating modes in the drive operating modes word. It defines 8
operating modes for the following cases of failure:
– Sign-of-life failure
– DC-link voltage < MD 1633 or MD 1631
– Activation of the autonomous drive emergency retraction through the NC
Table Drive operating modes Emergency retraction
Value input Operating mode
0 Normal mode
1 Monitoring mode
2 Delayed regenerative braking
3 Delayed regenerative braking only with sign-of-life failure
4 Emergency retraction
5 Emergency retraction only with sign-of-life failure
6 Generator operation with possible return to normal mode
7 Generator operation without possible return to normal mode
This machine data is relevant only for Siemens-internal purposes and must
not be altered.
Delay time regenerative braking
1637
Default value Lower input limit Upper input limit Units
0 0 10000 ms
Active
at once
Input of the time delay by which regenerative braking is delayed in the case of a failure.
This machine data is relevant only for Siemens-internal purposes and must
not be altered.
Input of the emergency retraction time, for which the emergency retraction speed (MD 1639) is
given as setpoint speed in the case of a failure.
7–146 ©
Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)