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System and Control Options
Liebert
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AC4
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7.3.1 Change Label (Name of Input)
Each input has a default label (Device_1, Device_2, etc.) that you may
change to a more descriptive name for ease in recognizing alarms and
events associated with the input. The label may consist of up to eight
characters (see Table 12 for valid characters).
The device name assigned through this menu is also displayed for the
corresponding output.
If the input label is changed, the output will change also.
• From the Setup Inputs Menu, choose Label for the selected input—Label: Device_1 in the
example at right—and press Enter ↵.
• To change the input’s label, which may consist of up to eight characters:
• Use the arrows
↑↓ to choose a character.
• Press Enter ↵ to advance to the next character position.
• When finished, press Enter ↵ again.
7.3.2 Define Input as Normally Open or Normally Closed
Each input may be set up as Normally Open (NO) or Normally Closed
(NC). The default setting for all input points is NO (Normally Open).
If you require an input to be a supervised point, define the input as
Normally Closed (NC).
• From the Setup Inputs Menu, choose Norm Open/Close, as
shown at right, and press Enter ↵.
• To change the normal state for this input, use the arrows
↑↓ to
choose NO (Normally Open) or NC (Normally Closed), then press
Enter ↵.
7.3.3 Define Input as Alarmable or Event
Each input may be defined as Alarmable (AL) or as an Event (EV).
• For an input defined as alarmable, a change in the status of the
device triggers these actions: the LCD flashes, the audible horn
sounds, a record is entered in the Alarm Log and the common
alarm relay is energized.
• For an input defined as an event, a change in the status of the
device is recorded in the Event Log.
For both types (alarmable and event), user setup determines output
control—whether the device that changed status is disabled or kept in
operating mode and whether a standby device is set to operate.
By default, all inputs are set up as AL (Alarmable).
• From the Setup Inputs Menu, choose Alarm/Event, as shown at
right, and press Enter ↵.
• To change the type of input, use the arrows
↑↓ to choose AL (Alarmable) or EV (Event), then press
Enter ↵.
Table 14 Input and output labels
Label Applies to:
Device_1 Input 1 Output 1
Device_2 Input 2 Output 2
Device_3 Input 3 Output 3
Device_3 Input 3 Output 3
Setup Inputs Menu
SETUP DEVICE_1
> LABEL: DEVICE_1
NORM OPEN/CLOSE: NO
ALARM/EVENT: AL
↑↓=NEXT ↵=SELECT
LATCHED: N
DELAY: 00:01
Change Label
CHANGE LABEL
DEVICE_1
↑↓=SELECT ↵=NEXT/END
Setup Inputs Menu
SETUP DEVICE_1
LABEL: DEVICE_1
> NORM OPEN/CLOSE: NO
ALARM/EVENT: AL
↑↓=NEXT ↵=SELECT
LATCHED: N
DELAY: 00:01
Normally Open / Closed
IS INPUT NORMALLY
OPEN OR CLOSED? NO
↑↓=NO/NC ↵=END
Setup Inputs Menu
SETUP DEVICE_1
LABEL: DEVICE_1
NORM OPEN/CLOSE: NO
> ALARM/EVENT: AL
↑↓=NEXT ↵=SELECT
LATCHED: N
DELAY: 00:01
Alarmable / Event
IS INPUT AN ALARM
OR EVENT? AL
↑↓=AL/EV ↵=END