Emerson Essential Information on OCX 8800 and Rosemount OCX 8800 Oxygen Equipment

Instruction Manual

IM-106-880, Rev 1.0

January 2007

Lockout

OCX 8800

The LOI has a lockout feature that prevents nuisance actuation by someone brushing against the glass window, raindrops, dirt, insects, etc. This lockout mode is automatically established when no buttons are pushed for 30 seconds (default). This countdown to lockout is configurable.

In order to unlock the display, input a "Z" pattern (Figure 4-3). First, touch the top left (gray) Enter key. Next, touch the top right key, followed by the bottom left key and the bottom right key. The LK notation in the upper right corner of the display will disappear. Touch the Enter key once more to enter into the menu structure. Whenever a key is touched additional time to lockout is provided, so that the lockout feature does not become a nuisance. This additional revert time is one hour (default) and is also user configurable.

Figure 4-3. ‘Z’ Pattern Entry

1 2

E

Analytical

3 4

37390057

LOI Status Codes

The LOI display shows a status code in the lower right hand corner of the display. There are nine status codes to indicate the existing status of the device during operation. The status code descriptions are shown in Table 4-1.

Table 4-1. LOI Status Codes

CODE

AL

BL

CA

CV

NM

PO

SF

ST

WU

DESCRIPTION

Alarm - The device is in a recoverable alarm state.

Bloback - A blowback cycle is active.

Calibration - A calibration cycle is active.

Calibration Verify - A calibration verify task is in progress.

Normal - The device is in a normal operating mode.

Power On - A system level initialization sequence is active. This will continue for several seconds.

System Fault - The device is in a non-recoverable alarm condition. The unit must be reset or power must be cycled off and on to resume operation.

Stabilize - The device heater control is stabilizing (after warm up). Sensors are warming up to operating temperature.

Warm Up - The device heaters are ramping up to operating temperature.

4-3