Rockwell Automation 1608M MegaDySC User Manual, 800 Amp - 208V - Manual (Page 22)

22 Rockwell Automation Publication 1608M-UM003A-EN-P - December 2013
Chapter 3 Communications
• CBO Closed (CR5A) - Contact is closed when the output circuit breaker
(CBO) is closed. Contact is open when CBO is open.
• DySC Alarm (CR7A) – Contact is closed when there is an active alarm on
the MegaDySC system. Contact is open when there is no alarm on the
MegaDySC system.
Modbus TCP/IP
Communications MegaDySC system status and other items are communicated over a Modbus
TCP/IP connection. This can be accessed through RJ45 port number 5 on the
Ethernet switch in the Automatic Bypass Switchboard. Contact Rockwell
Automation technical support for protocol details.
i-Sense
®
Voltage Monitor
A six-channel i-Sense voltage monitor is mounted on the Bypass Switchboard.
The i-Sense continuously monitors both the 3-phase input voltage and the 3-
phase output voltage of the MegaDySC system. The I-Sense is wired in parallel
with the bypass circuit breaker CBB. For 3-wire systems, the i-Sense monitors
Line-Line voltages; for 4-wire systems the i-Sense monitors Line-Neutral voltage.
The i-Sense requires communication over the Internet. The i-Sense should be
connected through RJ45 port number 5 on the Ethernet switch in the Automatic
Bypass Switchboard.
See Rockwell Automation publication 1608S-UM001A-EN-P for more
information.