UAP1080 - USC Application

What This Application Does

1. Input = potentiometer (0-5k Ohm).
   Scale is 4-10 Carcass/minute.
   Scale adjustable via Access Module AM702.
2. Output = 0-20mA.
3. Relay output = ON/OFF
   'ON TIME' is 1 second (adjustable via a constant. Min = 0.02 sec).
   'OFF TIME' = 60 seconds (adjustable via a constant. Min = 1 sec) divided by Carcass/minute rate
   Examples
   4 Carcasses per min = (60/4) = 15 sec off and 1 sec on;
   6 C/min = (60/6) = 10 sec off and 1 sec on.
4. DPM to display the Carcass/minute rate as number corresponding to the scaled output from the USC (generally between 4.00 to 10.00).

Program Outline

Set the equation timer to 20mS

1. When power is first applied to the USC701 PowOn (V00) is equal to 0 this will cause an initialisation routine to run during which constants used in the equation are set and the OffCount (V11) value is set.

2. Use an off counter OffCount will count from an evaluated period down to 0. When OffCount reaches zero the required OnCount (V12) is calculated.

3. When OnCount is calculated the relay is also set to on.

4. The OnCount will count down to 0. When OnCount reaches zero the required OffCount is calculated and the relay is switched off.

5. This process will continue until power to the unit is lost.

File	Comment
Help	If unexpected results occur when loading the .usc file press back and click on help for instructions.
uap1080a.usc	First Issue