Operator Manual

748223-K June 2002

Model 7003M

3-6 ALARM MODE VS. ON/OFF-CONTROL MODE

Refer to Figure 3-5 on page 3-17 and Table 3-17 below. From the ALARM or ON/OFF- Control Mode, the operator can:

•Set alarm ON and OFF setpoints.

•Select alarm or ON/OFF-Control function for relays

•Disable alarm(s)

KEY

DISPLAY

WHAT HAPPENS

DISPLAY

Nothing

Nothing

ACK

"dIS"

Disables alarms

ALARM 1

"C-1" / "A-1"

Toggles between alarm and controller mode

ALARM 2

"C-2" / "A-2"

Toggles between alarm and controller mode

UP ARROW

10.8 →10.9

Changes alarm setpoint

DOWN ARROW

10.9 →10.8

Changes alarm setpoint

CAL

Nothing

Nothing

ENTER

"OFF" / "run"

Moves to the "OFF" setpoint step or goes back to RUN mode

Table 3-17. ALARM Mode Key Functions

a. Relay Configured as Alarm

b. Relay Configured as ON/OFF-

 

Controller

Relays are configured as alarms (ALARM Mode) when immediate operator action is required.

When alarms are selected, "A-1" and "A- 2" are displayed in the ALARM mode setup procedure.

When an alarm condition occurs, the caret blinks, the relay activates, and the display flashes. Press the ACK key to acknowledge the alarm, de-energize the relay coil and stop the alarm actions.

Relays are configured as ON/OFF- Controllers (ON/OFF-Controller mode) when a non-critical, non-hazardous automated action is desired, or when it is important that the relay output not be bypassed by the operator.

When ON/OFF-Controllers are selected, "C-1" and/or "C-2" is displayed in the ALARM mode set-up procedure.

When an ON/OFF-Controller alarm condition occurs, Alarm 1 or 2 caret blinks and the relay coil is energized. However, the display does not flash, and the ACK key is inactive. Alarm conditions are automatically reset when the sensor indicates that an alarm condition no longer exists.

3-16 Operation

Rosemount Analytical Inc. A Division of Emerson Process Management