7SR105 Rho Description of Operation
©2018 Siemens Protection Devices Chapter 1 Page 55 of 57
6.5 Operating Mode
The relay has three operating modes - Local, Remote, and Out of Service. The following table identifies the
functions operation in each mode.
The modes can be selected by the following methods:
SYSTEM CONFIG > OPERATING MODE setting, a Binary Input or Command
Table 6-1 Operation Mode
6.6 Control Mode
This mode provides convenient access to the relay control functions listed below. When any of the items listed
below are selected control is initiated by pressing the ENTER key. The user is prompted to confirm the action,
again by pressing the ENTER key, before the command is executed.
CB Control
E/F In
Set Local or Remote
Set Remote
Set Local
Set Service
Note that the CB must be in a Closed state before an Stop command will be accepted. And that the CB must be in
an Open state before a Start command will be accepted.
Note also that switching a protection function IN / OUT via the Control Menu will not change that function’s
ENABLED / DISABLED setting. The Control Menu selection will over-ride the setting, however.
Control Mode commands are password protected using the Control Password function, see
Section 6.9
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