ABB OMD800 - Page 35

35
AUTOMATIC CONTROL UNIT, OMD800
AUTOMATIC CONTROL UNIT, OMD800
Changeover Switch Type
User can choose Changeover Switch Type between Automatic OTM_C_D and Motorized OTM_C. Always
use Automatic OTM_C_D when you have automatic transfer switch OTM_C_D or motorized
OTM40…125_CMA_ change-over switch in use. Choose Motorized OTM_C when you have motorized
OTM160…2500_CM_ in use. Automatic OTM_C_D is the default.
Figure 7.20 Changeover Switch Type, Automatic OTM_C_D is the default
Manual Back Switching
With this parameter user can inhibit the automatic back switching sequence for example while per-
forming maintenance on Line 1. The switch is changed to position O, if the Line 2 fails. Off is the default.
Figure 7.21 Manual Back Switching, Off is the default
Generator Shutdown
With this parameter user can choose between two strategies how OMD800 operates after receiving a
generator alarm. If the Generator Shutdown is set to On, the generator stop command will be sent im-
mediately after receiving the generator alarm. In this case also back switching delay is overridden and
the back switching to Line 1 will take place immediately. If the Line 1 is not available the switch will
change to position O. If the Generator Shutdown is set to Off, loads are supplied from generator line
also after receiving a generator alarm. In this case user is informed about the generator alarm by blink-
ing the letter G on the default page Off is the default.
Figure 7.22 Generator Shutdown, Off is the default
Changeover Switch Type
Automatic OTM_C_D
A07132
Cancel EditOK
System Configuration
Changeover Switch Type
Manual Back Switching
Generator Shutdown
13/13
A07135
Generator Shutdown
Off
A07136
Cancel EditOK
System Configuration
Generator Usage
Line Priority
Changeover Switch Type
11/13
A07131
System Configuration
Line Priority
Changeover Switch Type
Manual Back Switching
12/13
A07133
Manual Back Switching
Off
A07134
Cancel EditOK