Standard Screw Compressor - RWB Series
4-2
M&M
R
EFRIGERATION
I
NC
.
Logging Functions Technical Overview
The following sections will discuss the overall function of each of the five standard logs as well
as the optional KW and System Logs.
Operations Log
The Operations Log displays a list of the system operating conditions for the last hour at
30-second intervals and has a limit of 255 recorded data entries. An extra entry is made
to the Operations Log when special events occur, such as alarms, failures or system
reset. When an alarm, failure, or OEM failure occurs a special indicator is also placed
next to the logged parameter causing the problem. Typically the data recorded in this log
will be the analog inputs, system state variables and alarm information. However, data
recorded in this log will vary depending on the system's configuration.
Trend Log
The format of the Trend Log is identical to the operations log. The Trend Log allows the
user to define the recording interval (Default 15 minutes) and has a limit of 255 recorded
data entries. A special entry is made to the Trend Log when certain events occur similar
to the Operations Log. Indicators and highlighting are used to identify parameters caus-
ing alarms or failures as in the Operations Log.
Alarm Log
The Alarm Log is a record of the last 100 system alarms. When an alarm first occurs an
alarm entry is made in the log. The process is repeated until the maximum of 100 entries
is reached. Alarms previously logged are then replaced by more recent alarms detected.
Failure Log
The Failure Log is a record of the last 100 failures. When a failure first occurs a failure
entry is made in the log. The process is repeated until the maximum of 100 entries is
reached. Failures previously logged are then replaced by more recent failures detected.
User Log
The User Log is a record of the last 50 users who logged on to the system. An entry is
made into this log when a user logs on to the system. The process is repeated until the
maximum of 50 entries is reached. Users previously logged on are then replaced by users
who have more recently logged on.
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