1 change label (name of input), Table 16 input and output labels, 2 define input as normally open or normally closed – Emerson Autochangeover Controllers AC8 User Manual

Page 45: 3 define input as alarmable or event, Change label (name of input), Define input as normally open or normally closed, Define input as alarmable or event, Table 16, Input and output labels

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System and Control Options

37

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 14 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 above 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 digital input may be defined as Alarmable (AL) or as an

Event (EV).

• For a digital input defined as alarmable, the following alarm

reactions occur when the status of the monitored input device

changes: the LCD flashes, the audible horn sounds, configured

pager numbers will be notified and a record is entered in the

Alarm Log.

• For a digital input defined as an event, the status change 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 digital 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 digital input, use the arrows

↑↓

to

choose

AL (Alarmable) or EV (Event), then press Enter

.

Table 16

Input and output labels

Label

Applies to:

Label

Applies to:

Device_1

Input 1 and Output 1

Device_5

Input 5 and Output 5

Device_2

Input 2 and Output 2

Device_6

Input 6 and Output 6

Device_3

Input 3 and Output 3

Device_7

Input 7 and Output 7

Device_4

Input 4 and Output 4

Device_8

Input 8 and Output 8

Setup Inputs Menu

SETUP DEVICE_1

> LABEL: DEVICE_1

NORM OPEN/CLOSE: NO
ALARM/EVENT: AL

↑↓

=NEXT

=SELECT

LATCHED: Y
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: Y
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: Y
DELAY: 00:01

Alarmable / Event

IS INPUT AN ALARM
OR EVENT? AL

↑↓

=AL/EV

=END

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