Rockwell Automation 1608M MegaDySC User Manual, 800 Amp - 208V - Manual (Page 30)

30 Rockwell Automation Publication 1608M-UM003A-EN-P - December 2013
Chapter 5 Operation
protect the inverter module from peak over currents during sag protection
operation.
Each of CBB, CBI, CBO contains an electronic trip unit with adjustable trip
settings. These are factory-set to:
CBB and CBO Set Points
• Long-time Ir = 1 (100% of rating)
• Long-time tr = 24
• Short-time Isd = 10
• Short-time tsd = OFF/.4
• Instantaneous Ii = OFF
CBI Set Points
• Long-time Ir = 1 (100% of rating)
• Long-time tr = 8
• Short-time Isd = 4
• Short-time tsd = ON/.3
• Instantaneous Ii = OFF
Diagnostic Indicators
Diagnostic indicators available on the MegaDySC system:
• Touchscreen display on the door of the MegaDySC enclosure.
• Red lamp on Bypass enclosure indicates mechanical bypass is closed
when lit.
• Circuit breaker status (OPEN or CLOSED)
• Remote contacts and Modbus TCP/IP port
IMPORTANT In the event of the operation of any over current protection function, check the
touchscreen display on the MegaDySC for error codes that may indicate the
type of over current condition.
ATTENTION: Circuit Breaker settings must not be changed without consulting
Technical Support.
IMPORTANT Record any Alarm or System Event messages seen on the display before
contacting Technical Support