Hardy Process Solutions HI 2160RC PLUS, Operation And Installation Manual

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Chapter 8 - Operation
8-25
• Use the numeric keys to enter the new value. Enter any
value as long as it is higher than the SPL (Set Point Low)
value.
• Press the Enter button to accept the new value.
10.Press the Exit button to return to the Main Menu.
11.Press the Exit button again to return to the Operating Display.
Ratio Control
Application
Example
Application
• Material A - Controlled by the Host at a rate of 100 lbs/hr.
Host 4-20 milliamp analog output signal.
4 milliamps = 0 lbs/hr
12 milliamps = 100 lbs/hr
20 milliamps = 200 lbs/hr
• Material B - Controlled by an HI 2160RC
PLUS
Rate Controller.
Blended into Material A at a rate of 20% of the full flow rate of
Material A (i.e. 200 lbs/hr).
• Material C - Controlled by an HI 2610RC Rate Controller.
Blended into Material A at a rate of 10% of the full flow rate of
Material A (i.e. 200 lbs/hr).
NOTE: Note that the settings for Material "B" and Material "C" are the same as the full flow
rate of Material A. This is necessary so that the feed rates for B and C are propor-
tional for the entire output span of Material A.
Setup
• Material B
Step 1. Set the LO Output Signal (4 milliamps) to 0.00. Now 4
milliamps = 0 lbs/hr. (See Remote Set Points Option for
Ratio Control Applications, Setting The LO Output Signal
Parameter above)
Step 2. Set the HI Output Signal (20 milliamps) to 200.0 lbs/hr.
(See Remote Set Points Option for Ratio Control Applica-
tions, Setting the HI Output Signal Parameter above)
Step 3. Set the Percentage at 20%. (See Remote Set Points Option
for Ratio Control Applications, Setting a Percentage of
the HI Output Signal above)
• Material C