Identifying Defective Drive Modules - Siemens SINUMERIK 828D Function Manual

5.6

Identifying defective drive modules

Deactivate drives
Drives can be removed from the NC configuration using a piece of machine data.
Troubleshooting may involve a situation where a drive module (SIMODRIVE 611 digital) displayed in an alarm
text needs to be removed from the bus in order to determine whether this module has caused the displayed error.
With machine datum:
MD13030 $MN_DRIVE_MODULE_TYPE
, individual modules can be removed from the NC-side drive bus configuration (the affected axes are switched to
simulation).
Note
You must remove the desired module from the drive bus configuration (SIMODRIVE 611
digital) before you activate the function. To do this, connect the drive so as to exclude the
module.
Since this internal modification to the machine configuration can result in damage to the
machine if implemented incorrectly, the axes are prevented from moving.
If Safety Integrated has been activated for the modules concerned, you must disable it
manually (safety, logged, EMERGENCY STOP scheme).
Remove drive module at NC end
A drive module (SIMODRIVE 611 digital) specified in an alarm text must be removed from the bus:
1. Remove the module from the drive bus network
2. Set entries of the drive module in machine datum:
MD13030 $MN_DRIVE_MODULE_TYPE
to zero (zero-axis module).
3. Perform an NC RESET.
The axes which were controlled by the removed drive modules are now replaced by simulated axes. The 611D
bus with its drive modules is now in a state in which it could normally move axes, but axis traversal has been
disabled internally.
Alarm 300020 "Drive %1 removed for diagnostics" displays this status to the operator.
Restoring the initial configuration
After completing the diagnostics, the initial configuration on the drive bus must be restored:
1. Replace or re-install the removed drive module.
2. Change entries of the drive module in machine datum:
MD13030 $MN_DRIVE_MODULE_TYPE
back to the original values.
3. Perform an NC RESET.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
D1: Diagnostics tools
5.6 Identifying defective drive modules
293