
System and Control Options
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.
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 |
If the input label is changed, the output will change also.
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
•From the Setup Inputs Menu, choose Label for the selected
•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.
7.3.2Define 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 ↵.
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
7.3.3Define 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
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 ↵.
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
•To change the type of input, use the arrows ↑↓ to choose AL (Alarmable) or EV (Event), then press Enter ↵.
Liebert® AC4™ | 30 |