MR ETOS ED - Page 259

9 Visualization
Maschinenfabrik Reinhausen GmbH 2020 2596385142/08 EN ETOS
®
ED
The motor runtime and therefore the Motor Current Index differ depending
on the type of tap-change operation. The Motor Current Index will therefore
be categorized in accordance with the following types of tap-change opera-
tion to aid comparison:
Tap-change operation type Description
TSO/CSO
Tap selector operation / change-
over selector operation
The switching direction is the same as the pre-
vious switching direction. Example:
▪ Previous tap-change operation: pos. 2 →
pos. 3
▪ Current tap-change operation: pos. 3 →
pos. 4
RSO
Reverse tap-change operation
The switching direction is not the same as the
previous switching direction. Example:
▪ Previous tap-change operation: pos. 2 →
pos. 3
▪ Current tap-change operation: pos. 3 →
pos. 2
Unknown The tap-change operation type is unknown.
This is the case after the device has been
restarted or if the motor protective switch has
been triggered.
Table82: Tap-change operation types
For the correct determination of the Motor Current Index, you must use a
signaling module for the tap position that also signals the pass-through posi-
tion as a separate tap position.