Liebert Universal Monitor 用户手册

The Universal Monitor takes readings of configured analog input sen-

sors at regular intervals and stores them in four separate trend logs, 

one for each sensor. The time interval is 30 minutes. Each log contains 

up to 100 records.
Follow these steps to select a sensor and view its trend log:

To select a sensor:

• From the Main Menu, use the arrows

↑ ↓

 to

 

choose View Status, 

then press Enter ↵ .

• From the View Status Menu, use the arrows

↑ ↓

 to

 

choose View 

Trend Log, then press Enter ↵ .

• From the Sensor Selection Menu, use the arrows

↑ ↓

 to

 

choose the 

sensor you want to view—Sensor_1 in the example at right—and 

press Enter ↵ .

The Trend Log screen displays up to 100 records for the selected sensor. 

If the log contains records, the screen displays details for each reading:

• the name of the selected sensor (for example, 

SENSOR_1

)

• the  reading  (

75.4 DEG

)

• a brief description of the reading status (

NORMAL

)

• the date and time of the reading

Table 16 shows conditions that the trend log records for analog inputs. 

Each analog input has its own trend log.

If there are no records in the log, the screen displays the message:

There may be up to 100 records of trend data for the selected sensor.

• To view additional records, use the arrows

↑ ↓

.

• To return to the previous screen, press the ESC key.

The four trend logs are stored as files in the Universal Monitor, with a maximum of 100 records per 

sensor. When a log is full, the oldest records are deleted from the end of the file as new trend records 

are added at the beginning.
You may back up each trend log file to a remote computer using the Service Terminal Interface, as 

described in 8.2 - Back Up Log Files (Service Terminal Interface only).
To delete all records in the trend logs, see 9.12 - Clear Alarms & Logs.

LOW SETPOINT ALARM

LOW SETPOINT EVENT

HIGH SETPOINT ALARM

HIGH SETPOINT EVENT

RETURN TO NORMAL

NORMAL

SENSOR PROBLEM (denoted by dashes ------)

SYSTEM AND CONTROL

↑ ↓=NEXT

↵

=SELECT

VIEW ACTIVE ALARMS
VIEW ALARM LOG
VIEW EVENT LOG

VIEW INPUT STATUS
VIEW OUTPUT STATUS
VIEW PAGER NUMBERS

SENSOR TO VIEW?

SENSOR_2

↑ ↓=NEXT

↵

=SELECT

SENSOR_3
SENSOR_4

> TREND LOG  100/100
SENSOR_1

75.4 DEG

NORMAL
28-AUG-02

15:45:51

SENSOR_1

70.5 DEG

LOW SETPOINT EVENT
28-AUG-02

15:15:51

SENSOR_1

79.9 DEG

RETURN TO NORMAL
28-AUG-02

14:45:21