Unit operation – Liquid Controls SP3850 User Manual

Page 19

SP3850 Flow Computer

5. UNIT OPERATION

5.1 Front Panel Operation Concept for Run Mode

The SP3850 is fully programmable through the front panel. Please review
the following usage summary before attempting to use the instrument.

HELP
On-line help is provided to assist the operator in using this product. The help is available
during RUN and SETUP modes simply by pressing the HELP key. The HELP key is used
to enter decimals when entering numeric values.

FUNCTION KEYS
In the RUN mode, several keys have a special, direct access feature, to display an item of
interest (i.e. RATE, TOTAL, PRE 1, etc.). Press the key to view your choice. Press the
SCROLL key to return to scrolling display. The F1, F2 & F3 keys allow the operator to view
more than one piece of information. Pressing these keys additional times will display
additional information.

CLEARING TOTALIZER
To clear the total, you must quickly press the TOTAL Function Key 3 times. You will be
asked to verify this action. The operator will be prompted to enter password if the unit is
locked.
NOTE:

In the Batcher Mode, simply press the CLEAR key to reset the total (the batcher
must be stopped or finished batching). It is not necessary to press the TOTAL
Function Key first.

CLEARING GRAND TOTAL
To clear the grand total, you must quickly press the GRAND Function Key 3 times. You
will be asked to verify this action. The supervisor will be prompted to enter the supervisor
password if the unit is locked.

PRESET KEYS
In the RUN mode, PRE 1 & PRE 2 keys are used to view and/or change the preset
setpoints. To view the Presets, simply press the desired Preset key. Rapidly press the
Preset keys 3 times, then press the Clear key for direct editing of the preset setpoints.

SELECTING THE FLUID
While holding F1 key depressed, press ENTER. Use the

∆ ∇ keys to scroll through

the available fluids. At desired fluid press ENTER to select fluid.

SCROLL
Rapidly press the Scroll key three times to setup a display list.
Press the CLEAR key to remove old scroll list.
Press the function key for the item you wish to add
Use the

∆ ∇ keys to assign the line.

PRINT
The PRINT key is used to print on demand. When the PRINT key is pressed, a user
defined list of data (TOTAL, RATE, PRE 1, etc.) is sent to the RS-232 port. A timed
message of "PRINTING" will be displayed to acknowledge the print request.

SPECIAL BATCHING KEYS
The START and STOP keys are used only when batching to start and stop batches. The
CLEAR key will clear the total without first pressing the TOTAL key (unit must be stopped).
All other keys work the same in both Rate/Total mode and Batch mode. The Start and Stop
keys operation are set by the control input settings. The Start options are: START or
RESET/START. The Stop options are: STOP or STOP/RESET.

MENU KEY
The MENU key is used to enter the Setup and Test modes. Press the MENU key to enter
the Setup and Test modes. (See section 6 for Setup mode, section 8 for Test mode). The
MENU key is also used as "escape" in Setup and Test Programming. Pressing the MENU
key while programming in the Sub-Menu groups will backup the display to that Sub-Menu
group heading. Pressing the MENU key while viewing the Sub-Menu groups will backup
the display to the Top Level Menu.

ACKNOWLEDGING ALARMS
Most alarm messages are self-clearing. Press the ENTER key to acknowledge and clear
alarms.
NOTE: Some keys and functions are password protected. Enter the password to gain

access. The passwords are factory set as follows:

Operator = 0

Supervisor = 2000

How To Use
On-Line Help

How To Use
Function Keys

How To Clear The
Totalizer

How To Clear The
Grand Total

How To Enter
Presets

How To Select The
Fluid

How To Create a
Scroll List

How To Use
The Print Key

How To Use
Special Batching
Keys

How To Use
The Menu Key

How To
Acknowledge Alarms

STOP

START

PRINT

–

CLEAR

•

MENU

ENTER

HELP

PRE 1

RATE

TOTAL

GRAND

SCROLL

PRE 2