Emerson AC4 Change Label Name of Input, Define Input as Normally Open or Normally Closed

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 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.

7.3.2Define 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 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 ↵.

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