Rockwell Automation 1608M MegaDySC Installation Instructions 400 A - Manual (Page 15)

Rockwell Automation Publication 1608M-IN001A-EN-P - September 2013 17
Chapter
3
Communications
Remote Diagnostics and
Remote Bypass Relay dry contacts are available for remote monitoring of the state of the Bypass
Circuit Breaker CBB and the Input Circuit Breaker CBI shunt-trip condition
(See
Figure 7 ). In addition, a customer-supplied relay may be used to remotely
command a Seamless Bypass operation, as described in Publication 1608M-
UM001A-EN-P. These functions are available from terminal block TB1 located
in the upper compartment of the bypass switchboard. See
Figure 9 and Figure 6
for recommended conduit entry location.
Figure 7 - Schematic Diagram - Status Relay Contacts
CBB Contacts
(Bypass Circuit Breaker) "Normal" position for the Bypass Breaker is defined as the breaker being OFF, or
Open. As such, the Normally-Open contacts are open when the Breaker is open;
the Normally-Closed contacts will open when the breaker is closed.
Example: Normal run: CBB will be Open; therefore TB1/11B will be electrically
connected to TB1/10B.
K1
5
1 3
6
2 4
7 8
CBB
N/C
CBB1
N/O
TB1
terminal block
NC
1A
C
2A
NO
3A
NC
1B
C
2B
NO
3B
NC
4A
C
5A
NO
6A
NC
4B
C
5B
NO
6B
.
7B
.
8B
.
9B
NC
10B
C
11B
NO
12B
unused
7A
unused
8A
unused
9A
NC
10A
C
11A
NO
12A
NC
13B
C
14B
NO
15B
NC
13A
C
14A
NO
15A
Customer-Supplied Contact:
Close to command
Seamless Bypass