Volume/Min Rate Fault; Volume/Area Rate Alarm; Low Tank Fault; Automatic Rate - Raven SCS 440 Installation & Service Manual

VOLUME/MIN RATE FAULT

The low limit value is the minimum volume per minute allowed before the valve stops closing, an alarm sounds,
and the SCS 440 console displays the message "LOW LIMIT." The low limit value should be determine will all
booms turned on, since this value is directly proportional to the percentage of booms that are turned on. For
example, if the low limit entered is 4 and half of the total boom length is shut off, the console automatically
reduces the low limit value to 2. To set the low limit value:
4. Press the VOL/MIN button until the console displays the message "SET LOW LIMIT 0."
5. Press ENTER.
6. Enter the desired low limit flow rate.
7. Press ENTER.
NOTE: The alarm may be turned off through the DATA MENU.

VOLUME/AREA RATE ALARM

The SCS 440 console alarm will sound if the actual application rate is 30% or more away from the target
application rate for more than 30 seconds. The alarm may be turned off thru the DATA MENU.

LOW TANK FAULT

The SCS 440 console alarm will sound if the volume in the tank drops below the value entered into the console.
The alarm will intermittently beep every 15 seconds and the display will flash "LOW LEVEL." To set the low tank
alarm value:
1. Press the VOL/TANK button until the console displays the message "SET LOW LEVEL 0."
2. Press ENTER.
3. Enter the desired low tank alarm value.
4. Press ENTER.
NOTE: The alarm may be turned off by entering a value greater than or equal to the current low tank alarm
value or turning off the booms. The alarm can be disabled by entering 0 as the low tank alarm value.

AUTOMATIC RATE +/-

The Automatic Rate +/- feature sets the increment at which flow is increased or decreased in the RATE 1 or RATE 2
function. Each time the INC/DEC switch is moved to INC, then the rate cal for that rate will increase by the amount
entered into the console. Likewise, when the switch is moved to DEC, the rate will decrease by that value. To enter
the rate change value:
1. Press RATE CAL 1 or RATE CAL 2 until the console displays the message "RATE +/- 0.0."
2. Press ENTER.
3. Enter the desired incremental value change. For example, if the rate is to change by 1, enter the value as 1.0.
4. Press ENTER.

CONTROL VALVE DELAY

The Control Valve Delay and Valve Advance features are recommended for low rate applications and allow the
system to build up pressure when the boom sections are toggled on or off. To program a valve delay and/or valve
advance, press and hold the SPEED CAL button for approximately 5 seconds. The console will display CONTROL
VALVE DELAY followed by the currently programmed value.
Manual No. 016-0159-822 Rev E
CONSOLE PROGRAMMING AND CALIBRATION
37