InteliMains 210 Global Guide
107
Events
specification
Protection
type
Description
Wrn Bus Lx >V
Wrn Bus Lx <V
(where x=1,2,3)
Hist
Bus voltage is out of limits given by Bus < and Bus > Voltage setpoint.
Bus >, <Frequency
Hist
The bus frequency is out of limits given by
and
Bus Right Underfrequency (page 184)
setpoints.
Bus Voltage
Unbalance
Hist
The bus voltage is unbalanced more than the value of
Current Unbalance
MP
The mains current is unbalanced more than the value of
setpoint.
Current IDMT
MPR
Mains current exceeds the limit for IDMT protection given by
and
setpoints.
Short Circuit
MPR
Short circuit current alarm is activated when the current value is out of
limits given by
BTB Fail
WRN
Failure of mains circuit breaker.
Bus CCW Rot
WRN
Bus voltage phases are not wired correctly. MGCB closing is
prohibited by controller.
Wrn
Synchronization Fail
WRN
If the synchronization timeout gets elapsed (forward synchronization).
Bus Meas Error
WRN
Bus measurement error. Bus voltage is out of limits for 20s.
Note:
This table does not contain all alarms in controller. It is only list of the most common alarms.
5.4.11 History log
The history log is an area in the controller’s non-volatile memory that records “snapshots” of the system at
moments when important events occur. The history log is important especially for diagnostics of failures and
problems. When the history file is full, the oldest records are removed.
Each record has the same structure and contains:
• The event which caused the record (e.g. “Overspeed alarm” or “GCB closed”)
• The date and time when it was recorded
• All important data values like RPM, kW, voltages, etc. from the moment that the event occurred.
Record structure
Name
Abbreviation
Description
Number
No.
Row number (0 corresponds to the last record, -1 to the previous
one, etc.)
Reason
Reason
Reason for history record (any event or alarm related to the gen-set
Time
Time
Time
Date
Date
Date
Bus Right
Brfrq
Bus Right Frequency
